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Wyszukujesz frazę "protein" wg kryterium: Temat


Tytuł:
Antioxidant, Anti-Tyrosinase, and Wound-Healing Capacities of Soy Protein Hydrolysates Obtained by Hydrolysis with Papaya and Cantaloupe Juices Showing Proteolytic Activity
Autorzy:
Nguyen, Thi-Phuong
Le, Quang T.
Tran, Mai Linh T.
Ta, Kim Nhung
Nguyen, Khoa T.
Powiązania:
https://bibliotekanauki.pl/articles/28408445.pdf
Data publikacji:
2024-01-22
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
antiradical activity
cantaloupe fruit
fibroblast model
degree of hydrolysis
papain
papaya fruit
soy protein isolate
tyrosinase inhibition
Opis:
Purified and crude proteases have been broadly applied to obtain hydrolysates from soy protein isolate (SPI) with the improved functional and biological properties. However, the use of fruit juices containing native proteases to produce SPI hydrolysates with better bioactivities receives less attention. The present study attempted to investigate the ability of papaya (Carica papaya) and cantaloupe (Cucumis melo) juices in the hydrolysis of SPI and assess the antioxidant, anti-tyrosinase, and wound-healing activities of obtained hydrolysates. Our analysis showed that SPI was hydrolysed by papaya juice, at the juice to substrate ratio of 2.5:2 (v/w), with a degree of hydrolysis (DH) of approximately 11% after 4 h of treatment at 55ºC. A higher DH (about 26%) was obtained by the hydrolysis with cantaloupe juice at the same juice to substrate ratio and treatment conditions. Papain used at the enzyme to substrate ratio of 0.625:2 (w/w) broke down SPI in a similar DH as papaya juice at the juice to substrate ratio of 2.5:2 (v/w). The ABTS•+-scavenging, OH-scavenging and tyrosinase inhibitory capacities of SPI were lower than those of hydrolysates obtained by the treatment with papaya juice (IC50 of 2.39, 7.17, and 32.07 μg/mL, respectively) and cantaloupe juice (IC50 of 2.46, 6.93, and 30.49 μg/mL, respectively). An enhancement in ABTS•+-scavenging, OH-scavenging and anti-tyrosinase activities was also observed in the hydrolysate obtained by papain (IC50 of 2.75, 17.85, and 117.80 μg/mL, respectively) compared to SPI. However, the increased level of the OH-scavenging capacity of the hydrolysate obtained by papain was lower than that of the fruit juice-treated samples. Remarkably, the hydrolysates prepared from the hydrolysis with fruit juices accelerated the wound closure in human fibroblasts by estimately 1.5 times after 24 h of treatment while this property was not observed in the hydrolysate by papain. Our study data suggest the potential of SPI hydrolysates obtained by papaya and cantaloupe juices in the preparation of healthy food products.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2024, 74, 1; 5-15
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prognostic significance of C-reactive protein/albumin and neutrophil/lymphocyte ratios in patients with COVID-19
Autorzy:
Beyazal Polat, Hatice
Arpa, Medeni
Polat, Zehra
Beyazal, Mehmet
Beyazal Çeliker, Fatma
Ayaz, Teslime
Ertürk, Ayşe
Powiązania:
https://bibliotekanauki.pl/articles/40570858.pdf
Data publikacji:
2024-06-30
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
COVID-19
C-reactive protein/albumin
neutrophil/lymphocyte
Opis:
Introduction and aim. COVID-19 causes an uncontrolled and generalized inflammatory response of the host immune system. Early recognition of the disease and early prediction of the clinical course are of great importance. The aim of this study was to evaluate the predictive role of the C-reactive protein/albumin ratio (CAR) and the neutrophil/lymphocyte ratio (NLR) for mortality in patients hospitalized with the diagnosis of COVID-19. Material and methods. The patients, who were hospitalized for COVID-19 and whose CRP, albumin, neutrophil, and lymphocyte levels were documented within the first 24 hours after admission, were analyzed retrospectively. Patients were divided into survivors and non-survivors; the groups were compared. Univariate and multivariate Cox regression models were developed to evaluate the CAR and the NLR as risk factors for mortality in COVID-19 patients. Results. One hundred and thirty patients were included in this study. The mean age of the survivor group (n=114) was 60±16 and 52% were male. The mean age of the non-survivor group (n=16) was 75±13 and 56% were male. In the non-survivor group, the CAR detected at the time of admission to the hospital was significantly higher compared to patients in the survivor group (p=0.026). Conclusion. As a result, the CAR, the NLR and LDH are independent risk factor indicators of mortality in hospitalized patients.
Źródło:
European Journal of Clinical and Experimental Medicine; 2024, 22, 2; 327-333
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recovery of Proteins from Sweet Potato Cell Liquid by Acidification via Inoculation-Enhanced Fermentation and Determination of Functional Properties of Protein Products
Autorzy:
Li, Qingshuai
Liu, Liping
Han, Yanlei
Zhao, Xiangying
Yao, Mingjing
Ma, Jing
Han, Mo
Zhang, Jiaxiang
Powiązania:
https://bibliotekanauki.pl/articles/28408449.pdf
Data publikacji:
2024-02-09
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
sweet potato proteins
Leuconostoc citreum
protein precipitation
digestibility
emulsification
foaming
Opis:
Starch production from fresh sweet potatoes generates process wastewater called sweet potato cell liquid (SPCL), which is rich in sweet potato protein (SPP). Currently, the commonly used protein recovery methods, such as isoelectric point precipitation and ultrafiltration, were not suitable for SPP recovery due to the low protein content of SPCL and the high cost of recovery. The feasibility of recovering SPP by SPCL acidification via inoculation-assisted fermentation was investigated in this study. The results indicated that the pH of SPCL could be reduced to approximately 4.0 within 6 h of fermentation with inoculation, resulting in an SPP extraction yield of 55.45% and purity of 66.23 g protein/100 g. With the addition of heating treatment, the extraction yield of SPP increased to 76.97–95.34%, while it maintained the purity of 66.36–70.12 g protein/100 g. The composition analysis revealed that SPP products contained sugars (below 11.5 g/100 g) in addition to protein and trace amounts of lignin and phenolics. Functional properties analysis showed that the SPP recovered by inoculation-enhanced fermentation exhibited better emulsifying and foaming properties, and higher digestibility compared to the SPP precipitated using hydrochloric acid. The method of extracting SPP from SPCL by inoculation-enhanced fermentation, as developed in this study, was a straightforward and cost-effective process that fosters significant potential for industrial applications.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2024, 74, 1; 49-58
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new strategy: high level expression and immunogenicity analysis of triplicate repeated multigenes in Mycoplasma hyopneumoniae
Autorzy:
Li, J.
Wang, G.
Powiązania:
https://bibliotekanauki.pl/articles/16647587.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
multi-epitope fusion protein
Mycoplasma hyopneumoniae
new generation vaccines
Opis:
Highly immunogenic nucleotide fragments from 3 genes of Mycoplasma hyopneumoniae strain 232 were selected using information software technology. After repeating each fragment three times, a total of 9 nucleotide fragments were joined together to form a new nucleotide sequence called Mhp2321092bp. Mhp2321092bp was directly synthesized and cloned into a pET100 vector and expressed in Escherichia coli. After purification, the proteins were successfully validated by SDS-PAGE and Western blotting using mouse His-tag antibody and pig anti-Mhp serum. BALB/c mice were intraperitoneally injected with purified proteins in the high-dose (100 µg), medium-dose group (50 µg) and low-dose (10 µg) groups. Mice in each group were injected on day 1, day 8 and day 15 of feeding, respectively. Serum samples were collected from all mice on the day before immunization and on day 22 after immunization. The antibody level in the mouse serum was detected using western blotting using purified expressed proteins as antigens. IL-2, TNF-α and IFN-γ were simultaneously detected in the mouse serum by ELISA. The results showed that the 60 kDa protein was successfully expressed and reacted specifically with the specific serum Mhp His-Tag mouse monoclonal antibody and pig anti-Mhp serum. From day 0 to day 22 of immunization, IFN-γ increased from 269.52 to 467.74 pg/mL, IL-2 increased from 14.03 to 145.16 pg/mL, and TNF-α increased from 6.86 to 12.37 pg/mL. The IgG antibody in mice increased significantly from 0 day to day 22 after immunization. This study suggests that the expressed recombinant protein may serve as one of the novel vaccine candidates for Mhp.
Źródło:
Polish Journal of Veterinary Sciences; 2023, 26, 2; 275-283
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applicability of 2,4-dinitrophenylhydrazine (DNPH) method of protein oxidative damage measurement in the seminal plasma of canine (Canis lupus familiaris) and stallion (Equus caballus)
Autorzy:
Mogielnicka-Brzozowska, M.
Woźniak, M.J.
Cichowska, A.W.
Fraser, L.
Kraziński, B.
Strzezek, R.
Zielińska, D.
Powiązania:
https://bibliotekanauki.pl/articles/16647556.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
2,4-dinitrophenylhydrazine
canine
protein carbonylation
seminal plasma
stallion
Opis:
Seminal plasma (SP) proteins are responsible for sperm functional quality. Developing a reliable method to determine the degree of oxidative damage of these proteins is important for establishing semen fertilizing ability. The main aim of the study was to verify the applicability of protein carbonyl derivatives measurement in the SP of canine and stallion, using a method with 2,4-dinitrophenylhydrazine (DNPH). The research material consisted of ejaculates obtained from eight English Springer Spaniels, and from seven half-blood stallions during the breeding and non-breeding season. The content of carbonyl groups in the SP was measured on the basis of the reactions with DNPH. The following reagent variants were used to dissolve protein precipitates: Variant 1 (V1) – 6M Guanidine solution and Variant 2 (V2) – 0.1M NaOH solution. It has been shown that to obtain reliable results for the measurement of protein carbonylated groups in the dog and horse SP, both 6M Guanidine and 0.1M NaOH may be used. A correlation was also found between the number of carbonyl groups and the total protein content in the canine (V1: r = -0.724; V2: r = -0.847) and stallion (V1: r = -0.336; V2: r = -0.334) SP. Additionally, the study showed a higher content (p≤0.05) of protein carbonyl groups in the stallion SP in the non-breeding season compared to the breeding season. The method based on the reaction with DNPH, due to its simplicity and cost effectiveness, appears to be suitable for large-scale application in the determination of the SP proteins oxidative damage in dog and horse semen.
Źródło:
Polish Journal of Veterinary Sciences; 2023, 26, 2; 177-184
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamics of Productivity of Leguminous Plant Groups during Long-Term Use on Different Nutritional Backgrounds
Autorzy:
Karbivska, Uliana
Butenko, Andrii
Kozak, Maksym
Filon, Vasyl
Bahorka, Mariia
Yurchenko, Nataliiа
Pshychenko, Olena
Kyrylchuk, Kateryna
Kharchenko, Serhii
Kovalenko, Ievgenii
Powiązania:
https://bibliotekanauki.pl/articles/24201750.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
legume
productivity
nutrition
botanical composition
density of plants
crude protein
meadow coenose
Opis:
Deterioration of ecological situation, increase of mineral fertilizer prices and their foreseen increase in recent years force us to look for the ways to reduce the rates of their application and alternative means of maintaining high productivity of sown fodder lands. Fertilization was and remains one of the decisive ways of increasing haymaking productivity, as well as increasing their economic efficiency. The productivity of leguminous grasses based on the study of agrotechnological measures of cultivation in the conditions of the Carpathian region is currently relevant. The studied species of perennial grasses, during the three-year cultivation, showed that the largest number of shoots was formed on the variant with horned sedge and was 1185–1201 pieces/m2. Medicago sativa had the smallest number of shoots (470 pics/m2, control (without fertilizers)). Trifolium pratense and Lotus corniculatus provided the highest productivity in relation to other species from 20 to 31%. Analysis of single–species crops productivity of perennial bean grasses by cuttings showed that the peculiarities obtained on average for all slopes, were also similar in each of two slopes. During the three–year use of the herbage on the yield from 1 ha of dry mass in both slopes, the herbage factor had the greatest influence, the share of which was 61–62%, while the share of the influence of fertilizer was 38–39%.
Źródło:
Journal of Ecological Engineering; 2023, 24, 6; 190--196
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of cultivar and nitrogen fertilisation on grain and protein yield in sorghum
Autorzy:
Różewicz, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/37240385.pdf
Data publikacji:
2023
Wydawca:
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
Tematy:
sorghum grain
sorghum cultivar
nitrogen fertilisation
protein yield
Opis:
Sorghum is a cereal crop of major importance in global production. It is grown in hot and dry regions of the world. In Poland, this species has so far not been cultivated for grain due to unfavourable climatic conditions. Currently, climate warming and the extension of the growing season provide an opportunity to introduce sorghum into grain cultivation. Three grain sorghum cultivars Albanus, Anggy, GK Emese were used in the ongoing microplot trials and three different nitrogen rates were applied: 80, 100 and 120 kg ha-1. The research was conducted over two growing seasons. The aim of the study was to determine the effect of cultivar and level of nitrogen fertilisation on the yield, yield structure and grain protein content of sorghum. A differentiated response of cultivars to nitrogen fertilisation was shown. Albanus and Anggy cultivars have similar yield potential and reaction to nitrogen fertilisation, and the optimum nitrogen dose for the cultivars is 100 kg of nitrogen per hectare, and an increased dose does not significantly increase the yield. Regardless of the level of nitrogen fertilization, the GK Emese variety always showed a higher protein yield compared to the other tested sorghum varieties. The cultivar GK Emese showed the highest yield potential. In 2020 it exhibited the highest increase in grain and protein yield along to increase of nitrogen fertilisation.
Źródło:
Polish Journal of Agronomy; 2023, 52; 71-78
2081-2787
Pojawia się w:
Polish Journal of Agronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Dry, Vacuum, and Modified Atmosphere Ageing on Physicochemical Properties of Roe Deer Meat
Autorzy:
Kasałka-Czarna, Natalia
Biegańska-Marecik, Róża
Proch, Jędrzej
Orłowska, Aleksandra
Montowska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/16538545.pdf
Data publikacji:
2023-05-25
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
roe deer
protein oxidation
lipid oxidation
vacuum
modified atmosphere
dry-ageing
Opis:
Consumers around the world are choosing sustainable and unprocessed foods. Roe deer meat, due to the natural origin, is a source of organic and healthy meat. The selection of suitable storage conditions and times plays an important role in a deterioration of the meat's functional and nutritional values. The knowledge about oxidation processes in roe deer meat stored and packed deploying different methods is limited. The main aim of this study was therefore to investigate the effect of storage method on the physicochemical properties of musculus longissimus thoracis et lumborum (LTL), musculus biceps femoris (BF), and musculus vastus lateralis (VL) of roe deer. The muscles were stored either dry (DRY-AGED), vacuum-packed (VAC), or packed under modified atmosphere (MAP) for 21 days. The quality of roe deer meat was assessed based on chemical composition, technological properties, pH values, water activity, colour, and oxidation processes of proteins and lipids. Roe deer meat had high protein (216.5–228.6 g/kg) and low fat content (17.1–25.8 g/kg). Both DRY-AGED and VAC contributed to improving meat tenderness during storage, while the Warner–Bratzler shear force of the MAP muscles increased. The high-oxygen conditions during MAP storage strongly induced the oxidation processes; an average increase of 1263% for thiobarbituric acid reactive substance (TBARS) level and 155% for protein carbonyl content on day 21. Vacuum packaging and dry-ageing are recommended methods for storing roe deer meat. The high oxygen atmosphere negatively affected the quality of this game species. It carries the risk of increased oxidation of proteins and lipids which may promote the formation of potentially detrimental compounds.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2023, 73, 2; 175-186
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of Humic Acid Extracted from Organic Waste Composts on Turnip Culture (Brassica rapa subsp. rapa) in a Sandy Soil
Autorzy:
Aylaj, Mina
Sisouane, Mhammed
Tahiri, Soufiane
Mouchrif, Yassine
El Krati, Mohammed
Powiązania:
https://bibliotekanauki.pl/articles/27323830.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
compost
humic acid
turnip
growth
chlorophyll foliar
protein
total soluble sugar
Opis:
Adding humic acid to soil can improve soil structure and fertility, which can lead to better plant growth and higher crop yields. Extracting humic acid from compost is a sustainable and environmentally friendly way to obtain a valuable organic material. Humic acid (HA) can be extracted from compost relatively easily and at a low cost, making it an attractive option for farmers. In this study, we investigated the use of sugarcane bagasse (SB) and immature horse manure (IHM) as bulking agents for the composting of separated municipal solid waste (SMSW) and the extraction and characterization of humic acid from the mature composts produced. Fertilizing solutions containing different concentrations of humic acid were prepared and used to evaluate their effects on turnip crop growth and various biochemical parameters during cultivation. The results showed that the humic acid extracted from the composts had high yields and were rich in elemental carbon. The application of humic acid at both low and high concentrations resulted in a significant improvement in all the parameters measured except for the total protein in the roots, which did not differ significantly between the humic acid concentrations. The yield, root diameter and fresh weight increased significantly, and the leaf area was proportional to the humic acid concentration of the solution used. The highest increase in chlorophyll a content was observed in the treatment of humic acid extracted from composts C2 and C3 at a concentration of 0.1 gL-1, with an increase of 31% and 37%, respectively, compared to the control. The use of humic acid provided by co-compost can be considered a successful management strategy for degraded sandy soils and sustainable agriculture production in sandy poor soils worldwide.
Źródło:
Journal of Ecological Engineering; 2023, 24, 7; 345--359
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expression of the gene encoding blood coagulation factor VIII without domain B in E. coli bacterial expression system
Autorzy:
Mazurkiewicz-Pisarek, Anna
Mazurkiewicz, Alina
Mikiewicz, Diana
Baran, Piotr
Ciach, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/16706242.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
factor VIII
hemophilia type A
recombinant coagulation factor VIII
prokaryotic expression system
E. coli
recombinant protein production system
Opis:
In this article, we have demonstrated the feasibility of generating an active form of recombinant blood coagulation factor VIII using an E. coli bacterial expression system as a potential treatment for hemophilia type A. Factor VIII (FVIII), an essential blood coagulation protein, is a key component of the fluid phase blood coagulation system. So far, all available recombinant FVIII formulations have been produced using eukaryotic expression systems. Mammalian cells can produce catalytically active proteins with all the necessary posttranslational modifications. However, cultivating such cells is time-consuming and highly expensive, and the amount of the obtained product is usually low. In contrast to eukaryotic cells, bacterial culture is inexpensive and allows the acquisition of large quantities of recombinant proteins in a short time. With this study, we aimed to obtain recombinant blood coagulation factor VIII using the E. coli bacterial expression system, a method not previously explored for this purpose. Our research encompasses the synthesis of blood coagulation factor VIII and its expression in a prokaryotic system. To achieve this, we constructed a prokaryotic expression vector containing a synthetic factor VIII gene, which was then used for the transformation of an E. coli bacterial strain. The protein expression was confirmed by mass spectrometry, and we assessed the stability of the gene construct while determining the optimal growth conditions. The production of blood coagulation factor VIII by the E. coli bacterial strain was carried out on a quarter-technical scale. We established the conditions for isolation, denaturation, and renaturation of the protein, and subsequently confirmed the activity of FVIII.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2023, 104, 3; 247-262
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Formulation of a Ready-to-Cook Soup Mix Using Microencapsulated Protein Hydrolysate Obtained from Pink Perch By-Product
Autorzy:
Kumari, Asha
Kaushik, Nutan
Slizyte, Rasa
., Khushboo
Powiązania:
https://bibliotekanauki.pl/articles/16538553.pdf
Data publikacji:
2023-08-29
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
nutrient-rich soup
fish protein hydrolysate
viscosity
pasting properties
consumer assessment
storage stability
Opis:
In fast-growing world, people have not enough time for the preparation of food and they have started depending on fast foods. However, consumption of fast foods causes malnutrition and nutrition-related diseases. Thus, there is a need to formulate nutrient-rich products that are easy to cook. In this study, lyophilized protein hydrolysate from pink perch by-product, microencapsulated protein hydrolysate and sun-dried whole fish powder were incorporated in the formulation of ready-to-cook (RTC) soup mixes. The chemical and physical properties, and consumer acceptability of RTC soup mixes were evaluated. The RTC soup mixes exhibited high solubility (41.0 to 43.0%) and non-Newtonian pseudoplastic behavior. RTC soup mix with microencapsulated protein hydrolysate (MPHS) had high overall acceptability among all RTC soup mixes. The accelerated shelf-life testing (40°C, 75% RH) revealed that RTC MPHS mix was stable for 6 days (equivalent to 24 days of storage at room temperature) without any preservatives and sterilization treatment. Therefore, RTC MPHS mix can be used as a nutrient-rich product in protein-deficient populations.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2023, 73, 3; 253-264
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Moisture dependent: physical properties of baobab seeds (Adansonia digitata L.)
Właściwości fizyczne nasion baobabu (Adansonia digitata L.) w zależności od ich wilgotności
Autorzy:
Lamidi, Wasiu Agunbiade
Ogunlade, Clement Adesoji
Olaniyan, Adetutu Rianat
Shittu, Kabiru Alani
Murtadha, Mosobalaje Abdulsalam
Ajibade, Adenike Favour
Fadeyibi, Adesina
Powiązania:
https://bibliotekanauki.pl/articles/2204325.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
bulk density
geometric mean diameter
crude protein
crude fibre
sphericity
gęstość nasypowa
średnia geometryczna średnica
białko surowe
włókno surowe
kulistość
Opis:
The research investigated physical properties of baobab seeds to determine suitable equipment for the processing of its seeds. Pods of baobab used in the study were collected at a local farm in Ilorin, North Central Nigeria. Physical properties of the samples, such as moisture contents, mass, axial dimensions, shape indices, true and bulk densities, porosity, angle of repose and surface area were determined. The results showed that physical properties of baobab seeds were stable for moisture content, ranging between 12 to 18% dry mass (dm). The 100 seed mass (g) and geometric mean diameter increased from 0.60 g to 0.62 g and 10.12 to 10.27 mm respectively, in the moisture range of 12 to 18% dm. Other studied ranges of physical properties ranges included: average length (12.22 to 12.63 mm), width (10.10 to 10.28 mm), thickness (8.23 to 8.42 mm,), sphericity, (81.23 to 82.56 mm), surface area (319.42 to 332.53 mm2 ), 50 seed mass (0.60 and 0.62 g), and 1000 seed mass (12 and 12.4 g) within the moisture content range of 12 to 18% dm. The angle of repose of baobab seeds decreased with an increase in moisture content. The maximum value of 29.18o was obtained at 14% moisture content while a minimum value of 24.42o was obtained at 18% moisture. Moisture content had a significant effect on coefficient of friction of baobab seeds on glass, stainless steel, plywood and rubber. In the same moisture range (12-18%), the static coefficient of friction for baobab seeds ranged from 0-739 to 0-905 on stainless steel, 0-960 to 1-190 on galvanized steel, 0-812 to 1-055 on plywood and 0- 496 to 0-950 on glass. The least coefficient of friction values were recorded on stainless steel and glass which implies that baobab seeds will move with lower resistance on these surfaces in post-harvest handling. On the other hand, the resistance will be higher on plywood and glass. The data obtained will serve as guide for agricultural and food engineers, food processors and technicians involved in design and construction of post-harvest equipment used for separating, cleaning, milling and other production processes, to which baobab seeds are subjected.
W pracy zbadano właściwości fizyczne nasion baobabu w celu określenia parametrów urządzeń do ich przetwarzania. Strąki baobabu zostały zebrane w gospodarstwie w miejscowości Ilorin w północno-środkowej Nigerii. Właściwości fizyczne określone w pracy to zawartość wilgoci, masa, wymiary osiowe, wskaźniki kształtu, gęstość rzeczywistą i objętościową, porowatość, kąt usypu i powierzchnię. Wyniki wykazały, że właściwości fizyczne nasion baobabu są stabilne dla wilgotności pomiędzy 12 a 18% suchej masy (sm). W zakresie wilgotności od 12 do 18% sm stwierdzono wzrost masy 100 nasion (g) i średniej geometrycznej średnicy odpowiednio z 0,60 g do 0,62 g i 10,12 do 10,27 mm. Pozostałe zbadane zakresy właściwości fizycznych to: średnia długość (12,22 do 12,63 mm), szerokość (10,10 do 10,28 mm), grubość (8,23 do 8,42 mm), kulistość (81,23 do 82,56 mm), pole powierzchni (319,42 do 332,53 mm2 ), masa 50 nasion (0,60 i 0,62 g) oraz masa 1000 nasion (12 i 12,4 g) w zakresie wilgotności od 12 do 18% sm. Kąt usypu zmniejszał się wraz ze wzrostem wilgotności, maksymalną wartość 29,18o uzyskano przy wilgotności 14%, natomiast minimalną 24,42o przy 18% sm. Wilgotność miała istotny wpływ na współczynnik tarcia nasion baobabu na szkle, stali nierdzewnej, sklejce i gumie. W tym samym zakresie wilgotności 12-18% współczynnik tarcia statycznego dla nasion baobabu wynosił od 0-739 do 0-905 na stali nierdzewnej, 0-960 do 1-190 na stali ocynkowanej, 0-812 do 1-055 na sklejce i 0-496 do 0-950 na szkle. Najmniejsze wartości współczynnika tarcia odnotowano na stali nierdzewnej i szkle. Sugeruje to, że nasiona baobabu będą się przesuwać z mniejszym oporem na powierzchniach z tych materiałów, jeżeli wykorzysta się je do produkcji urządzeń przetwórczych, podczas większy opór wystąpi na sklejce i szkle. Uzyskane dane mogą posłużyć technologom rolnictwa i żywności, zakładom przetwórstwa żywności i konstruktorom maszyn do przetwórstwa baobabu, np. urządzeń do sortowania, czyszczenia, mielenia itp.
Źródło:
Agricultural Engineering; 2023, 27, 1; 33--46
2083-1587
Pojawia się w:
Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oxidative Stability and Quality Parameters of Veal During Ageing
Autorzy:
Lušnic Polak, Mateja
Kuhar, Mojca
Zahija, Iva
Demšar, Lea
Polak, Tomaž
Powiązania:
https://bibliotekanauki.pl/articles/16538531.pdf
Data publikacji:
2023-02-21
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
ageing
veal
quality parameters
TBARs
protein carbonyls
Opis:
The objective of the present study was to evaluate the effects of the ageing period (1, 7, 14, and 21 days) on the quality parameters, sensory attributes, and oxidative stability of loins (longissimuss lumborum muscle) obtained from twelve Simmental calves less than 8 months old and slaughtered in a commercial processing plant. After 21 days, the colour of veal samples became yellower (increase in b* colour parameter value), and the instrumentally-measured texture improved (Warner-Bratzler shear force decreased from 84.61 N to 56.79 N). Ageing time enhanced sensory-evaluated tenderness, juiciness, aroma, and flavour. The amount of the lipid oxidation product determined as thiobarbituric acid reactive substance content remained unchanged; in contrast, the amount of protein carbonyls increased, without compromising veal quality.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2023, 73, 1; 24-31
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Practical aspects of the use of milking robots
Autorzy:
Borusiewicz, Andrzej
Romaniuk, Wacław
Winnicki, Stanisław
Skibko, Zbigniew
Zarajczyk, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/27312646.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
dairy cow
milk
milk fat content
milk protein content
milk yield
milking robot
Opis:
The article presents results of monitoring carried out in barns with milking robots. The use of milking robots makes it possible, with proper stocking, to milk cows without human intervention. The analysis included all barns with Lely robots located in the Podlaskie Voivodeship in 2018-2021. In 2018-2019, there were seven such barns, and in 2020-2021 nine. In all barns, high milk yields were obtained of more than 1000 kg compared to the average milk yield obtained from stock of cows under monitoring in the Podlaskie Voivodeship. In 2021, four barns milked more than 9.5 thous. kg, three barns more than 10 thous. kg and two barns almost 12 thous. kg of milk. Fat and protein contents were typical for the breed. Three barns were monitored more closely in 2021, with varying numbers of robot milking stations in barns, i.e. A one, B two and C three milking stations. In 2021, over 700,000 kg was milked per stall in stall A, over 750,000 kg in B and over 850,000 kg of milk in C. The average milk per cow per milking was high, with over 11 kg in barn A, 12 kg in B and 13 kg in C.
Źródło:
Journal of Water and Land Development; 2023, 57; 116--129
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of genetic modification of the PNPLA3 gene in predicting metabolically unhealthy obesity and metabolic associated fatty liver disease in children
Autorzy:
Abaturov, Aleksandr
Nikulina, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2207159.pdf
Data publikacji:
2023-03-25
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
children
metabolic associated fatty liver disease
obesity
patatin‐like phospholipase domain‐containing protein 3
single nucleotide variants
Opis:
Introduction and aim. Single nucleotide variants (SNV) of the patatin‐like phospholipase domain‐containing protein 3 (PNP-LA3) gene play an important role in hepatic lipid remodeling and lipogenesis de novo, which is associated with the development of metabolically unhealthy obesity (MUO) and metabolic associated fatty liver disease (MAFLD). The aim of the study was to define the contribution of SNV PNPLA3 gene to the development of MUO, complicated by MAFLD in children. Material and methods. 200 obese children aged 6-18 years were examined. The main group (n=118) was represented by children with MUO. The control group (n=82) consolidated of children with metabolically healthy obesity (MHO). Whole genome sequencing (CeGat) was performed in 31 children of the main and 21 children of the control group. Results. Among obese children, 14 variants of SNV PNPLA3 (rs139051, rs34179073, rs2294918, rs139047, rs779127153, rs2076212, rs738409, rs738408, rs4823173, rs2072906, rs2076213, rs141106484, rs138736228) were identified, including SNV PNPLA3 g.44322818, not described in the dbSNP core database. The role of the following SNV PNPLA3 genotypes in the development of MUO complicated by MAFLD was revealed: rs738409 C/G (Relative risk (RR)=1.71); rs738408 C/T (RR=1.71); rs4823173 G/A (RR=1.57); rs2072906 A/G (RR=1.57) with Sensitivity (Se)=0.63 and Specificity (Sp)=0.72. Conclusion. The contribution to the development of MUO complicated by MAFLD in children is made by the linked association of genotypes: rs738409 C/G, rs738408 C/T, rs4823173 G/A and rs2072906 A/G out of 14 PNPLA3 SNVs diagnosed by us.
Źródło:
European Journal of Clinical and Experimental Medicine; 2023, 1; 5-13
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł

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