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Wyświetlanie 1-15 z 191
Tytuł:
Antibacterial Effect of Sea Buckthorn (Hippophae rhamnoides L.) Fruit Extract on Radish Seeds Prior to Sprouting
Autorzy:
Rajkowska, Katarzyna
Rykała, Emilia
Czyżowska, Agata
Powiązania:
https://bibliotekanauki.pl/articles/31341110.pdf
Data publikacji:
2024-04-18
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
sea buckthorn fruit
antibacterial activity
radish seed decontamination
seed germination
phenolic compounds
Opis:
Sprouts consumption is increasing worldwide due to their nutritional and health benefits. However, they can be sources of foodborne bacterial diseases, including sprout-related outbreaks caused primarily by Shiga toxin-producing Escherichia coli and Salmonella spp. The aim of this study was to determine the efficacy of a dried sea buckthorn fruit extract in sanitization of contaminated radish seeds. The efficacy of 15-min seed treatment and 3-h soaking in the extract solution was evaluated in comparison to the treatment with 20,000 mg/L calcium hypochlorite, recommended by the U.S. Food and Drug Administration. The effect of the sea buckthorn fruit extract on radish seed germination capacity and the profile of phenolic compounds in the extract were also determined. Decontamination effect of the extract after a 15-min seed treatment ranged from 72.1% against Staphylococcus aureus to 93.0% against Listeria monocytogenes and was higher than that of active chlorine against E. coli, S. aureus and Salmonella enterica. Soaking seeds for 3 h in the extract increased the decontamination efficiency only against S. aureus (81.9%). Compared to water, after 4 days of sprouting, no significant differences were found in radish seed germination capacity and the length of roots and hypocotyls of sprouts. The sea buckthorn fruit extract had a high content of phenolic compounds, namely isorhamnetin 3-rhamnosylglucoside (12.99 mg/L), isorhamnetin 3-rutinoside (8.25 mg/L), protocatechuic acid (5.43 mg/L), isorhamnetin 3-glucoside (3.41 mg/L), and gallic acid (3.36 mg/L). The extract can be used as a substance limiting bacterial contamination of radish seeds and, as a result, sprouts, as well as a valuable source of phenolic compounds.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2024, 74, 2; 120-129
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bee Pollen as a Functional Product – Chemical Constituents and Nutritional Properties
Autorzy:
Alshallash, Khalid S.
Abolaban, Gomaa
Elhamamsy, Sam M.
Zaghlool, Ayman
Nasr, Ali
Nagib, Ashraf
Abd El-Hakim, Ahmed F.
Zahra, Abdullah A.
Hamdy, Ashraf E.
Taha, Ibrahim M.
Powiązania:
https://bibliotekanauki.pl/articles/2202357.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
eucalyptus
clover
maize
phenolic content
amino acid
pollen
Opis:
Nutritional supplements play a role in promoting human protein synthesis, fitness recovery, and mental health protection. Pollen is considered a natural food with excellent nutritional value. The use of bee-gathered pollen as a nutritional supplement is now widespread around the world, and it is appreciated for its healing qualities. However, depending on the floral species and the region of origin, pollen has a wide range of nutritional value. It was found that clover pollen had the highest protein content (31.4 g/100 g DM), while the lowest content was observed in maize pollen (21.3%). Eucalyptus pollen had the highest lipid amount (9.49 g/100 g DM), while clover pollen had the lowest content (7.46 g/100 g). Phytochemical analysis showed that eucalyptus pollen occupied the highest total antioxidant activity (67.02%), followed by clover (58.25%) then maize (52.18%), whereas clover pollen had the highest phenolic content (1165 mg GAE/100 gm), compared with the other pollen varieties (949.4 to 1073 mg-GAE/100 gm). The contents of branched-chain amino acids were 29, 33.3, and 38.4 mg/g for maize, eucalyptus, and clover respectively, representing 17.87, 18.44, and 16.53% of total amino acids. The contents of total essential amino acids (EAAs) were 61.8, 73.0, and 83.5 mg/g for maize, eucalyptus, and clover pollen, respectively. Only eucalyptus pollen ultimately met the minimum requirements of EAAs for adults. In contrast, the other two types of pollen contained at least 3–4 limiting amounts of the essential amino acids leucine, lysine, phenylalanine, and valine. In conclusion, pollen is a good, affordable source of nutrients that can be utilized as beneficial dietary supplements for human health.
Źródło:
Journal of Ecological Engineering; 2023, 24, 2; 173--183
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Current status of phenolic pollution in urban lakes and its toxicity to cells : a case study of Xi’an, China
Autorzy:
Wang, Min
Zhang, Yutong
Sun, Jingxin
Huang, Chen
Zhai, Hongqin
Powiązania:
https://bibliotekanauki.pl/articles/27311546.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Urban lakes
phenolic compounds
pollution
ecological risk assessment
miejskie zbiorniki wodne
związki fenolowe
zanieczyszczenie
szacowanie ryzyka
środowisko
Opis:
Liquid chromatography-mass spectrometry was used to detect and analyze phenolic compounds in the surface waters of four urban lakes in Xi’an – Hancheng Lake, Xingqing Lake, Nanhu Lake, and Taohuatan Lake. A total of 5 phenolic compounds were detected from the water samples, with a concentration range of ND-100.32 ng/L, of which bisphenol A (BPA) and nonyl phenol (NP) were the main types of phenolic compounds pollution in the four lakes. Pearson correlation analysis was used to analyze the concentration of phenolic compounds in the lake waters of Xi’an City and the water quality indicators COD, TP, NH3 -N, DO, and pH during the same period. It was found that there was a significant positive relationship between the concentration of BPA and COD, the concentration of estradiol (17-beta-E2), estrone (E1) and TP and TN, the concentration of octylphenol (4-t-OP) and pH. The ecological risk assessment (ERA) shows that the concentration of BPA, 4-t-OP and NP in the lakes is at a medium risk level( is between 0.1–1), and that of E1 is at a high risk level (is greater than 1). Female cells (breast cancer cells) and male germ cells (testis cells) of mice were used as research objects to explore BPA and NP Toxic effect on mouse germ cells. BPA and NP at a concentration of 10-8 mol/L were found to have the most value-inducing effect on MCF-7 breast cancer cells positive for estrogen receptor. Obviously, both BPA and NP can induce the proliferation of testicular Sertoli cells.
Źródło:
Archives of Environmental Protection; 2023, 49, 1; 63--73
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Extrusion on the Functional Properties and Bioactive Compounds of Tamarind (Tamarindus indica L.) Shell
Autorzy:
Aguilar-Avila, Dalia S.
Martinez-Flores, Hector E.
Morales-Sanchez, Eduardo
Reynoso-Camacho, Rosalía
Garnica-Romo, Ma. Guadalupe
Powiązania:
https://bibliotekanauki.pl/articles/16538555.pdf
Data publikacji:
2023-08-31
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
thermomechanical treatment
tamarind shell
dietary fiber
phenolic compounds
antioxidant capacity
Opis:
The food-use of the tamarind (Tamarindus indica L.) fruit produces shell and seeds as by-products. In this work, the effects of the tamarind shell moisture content and the temperature of their extrusion on the dietary fiber content and physiochemical properties, such as water absorption capacity (WAC), oil absorption capacity (OAC), and glucose dialysis retardation index (GDRI) of the extrudates, were estimated. Moreover, the effects of the extrusion variables on the total phenolic and total flavonoid contents and on the antioxidant capacity of the tamarind shell were evaluated. The dry powdered tamarind shell was conditioned to have 32 or 39 g of water per 100 g of shell, prior to being subjected to extrusion. Subsequently, the conditioned samples were processed at 90°C, 100°C and 110°C in a single screw extruder. A non-extruded tamarind shell was taken as a control. The extrusion resulted in a 138.3% increase in the soluble dietary fiber content, along with 40.3% and 18.4% reductions of total phenolic and total flavonoid contents, respectively. The antioxidant capacity of the tamarind shell with moisture content of 32 g/100 g extruded at 100°C and 110°C was similar to that of non-extruded material. Moreover, the extruded products had the higher OAC compared to that of the control and they displayed an excellent response with regard to controlling the GDRI. The extrusion advantageously modified properties of the tamarind shell particularly when material with a moisture content of 32 g/100 g at 100°C was processed.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2023, 73, 3; 278-288
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of the Addition of Extractives on The Reduction Of Vocs Emissions from Lacquers in the liquid state
Autorzy:
Brózdowski, Jakub
Gajewski, Erik
Szczepaniak, Oskar M.
Stachowiak-Wencek, Agata
Powiązania:
https://bibliotekanauki.pl/articles/27323538.pdf
Data publikacji:
2023
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
VOC
phenolic compounds
Prunus serotina
lacquer
GC/MS
SPME
reduction of VOC emissions
Opis:
The aim of this study was to determine the effect of the addition of extractive substances on the VOC emission of lacquer products in the liquid state. Three water-soluble acrylic resin products were investigated using the stationary phase microextraction technique in combination with gas chromatography coupled with mass spectrometry (SPME-GC/MS). The extraction of volatile compounds was analysed at three temperatures: 22 ℃, 35 ℃ and 45 ℃. 20 μg of an extract obtained from the leaves, branches and bark of black cherry (Prunus serotina Erhr.) were added to commercial products. Flavonoids accounted for almost 75% of the total phenols in the used extract. The spectrum of volatile compounds emitted by the liquid coating products selected for the studies was examined before and after adding the extract to them. It was found that the addition of black cherry extract caused a significant reduction in the emissions of volatile compounds emitted by the researched products. The compounds, whose amounts did not decrease under the influence of the addition of the extract, were esters of propenoic acid. The applied extract was a source of emissions from an additional compound: benzaldehyde. The total VOC emissions of the investigated liquid coating products was reduced by 8-55% and depended on the extraction temperature. The paper also proposes the mechanism of chemical reactions between phenolics and VOC, which may cause the reduction in VOC emissions from lacquer products. The IBM RXN tool was utilised to find possible reactions.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2023, 66, 211; Art. no. 1644-3985.437.04
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametry selekcyjne w hodowli nowych odmian pszenicy w aspekcie produkcji żywności funkcjonalnej
Selection parameters in breeding on the new wheat cultivars in the aspect of functional food production
Autorzy:
Dynkowska, Wioletta Monika
Cyran, Małgorzata Renata
Powiązania:
https://bibliotekanauki.pl/articles/2199747.pdf
Data publikacji:
2023-05-31
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
arabinoksylany błonnika pokarmowego
błonnik pokarmowy
lepkość ekstraktu ziarna
polisacharydy nieskrobiowe
pszenica ozima
związki fenolowe ogółem
dietary fiber
dietary fiber arabinoxylans
grain extract viscosity
nonstarch polysaccharides
total phenolic components
winter wheat
Opis:
Ziarno pszenicy, podstawowego zboża chlebowego na świecie, jest ważnym źródłem błonnika pokarmowego i przeciwutleniaczy w diecie współczesnego człowieka. Systematyczny wzrost zainteresowania konsumentów żywnością funkcjonalną w Polsce, która może być istotnym elementem profilaktyki i leczenia chorób cywilizacyjnych, zwraca uwagę na potrzebę hodowli polskich odmian pszenicy rekomendowanych do produkcji takiej żywności. Ziarno 46 linii pszenicy ozimej zostało ocenione pod względem lepkości ekstraktu wodnego, zawartości substancji fenolowych oraz ilości i składu błonnika pokarmowego. Stwierdzono niewielką grupę genotypów, które charakteryzowały się wysoką lepkością ekstraktu ziarna, podstawowego parametru warunkującego, miedzy innymi, spadek poziomu glukozy i cholesterolu we krwi po spożyciu produktów zbożowych. Wykazano dodatnią korelację pomiędzy lepkością ekstraktu ziarna a zawartością arabinoksylanów rozpuszczalnych. Jakkolwiek w wielu przypadkach obserwowano wysoką lepkość ekstraktu ziarna przy niskiej koncentracji arabinoksylanów w ekstrakcie, co wskazywało na nadrzędne znaczenie cech strukturalnych tych polisacharydów w odniesieniu do poziomu lepkości. Szczególne istotna jest długość łańcucha polisacharydowego (masa cząsteczkowa), którą szacowano pośrednio jako lepkość ekstraktu ziarna przypadającą na jednostkę masy arabinoksylanów rozpuszczalnych. Spośród ocenianych form pszenicy tylko dwie z nich wykazywały wysoką lepkość ekstraktu ziarna oraz wysoką koncentrację związków fenolowych. Genotypy, które łączą w sobie wysoki potencjał lepki i przeciwutleniający oraz charakteryzują się zwiększonym udziałem rozpuszczalnych polisacharydów błonnika pokarmowego, powinny stanowić punkt wyjścia do hodowli nowych odmian pszenicy przeznaczonych do produkcji żywności funkcjonalnej.
Wheat grain, a principal bread cereal in the world, represents a substantial source of dietary fiber and antioxidants in the modern human diet. A recent systematic increase in consumer attention paid to functional food, being an important element in preventing and treatment of civilization diseases, is observed in Poland. This points to a need for the breeding of new wheat cultivars recommended for functional food production. Grains of 46 winter wheat lines were evaluated with respect to their water extract viscosity, total phenolics content and the amount and composition of dietary fiber. A small number of lines were characterized by high grain extract viscosity, a primary factor that controls, among others, a decrease in glucose and cholesterol levels after consumption of cereal-based products. The grain extract viscosity was positively correlated with soluble arabinoxylan content. However, in many cases, high extract viscosity genotypes had markedly lower content of these polysaccharides, indicating paramount importance of their structural characteristics for viscosity level. Especially significant is the length of polysaccharide chain (molecular weight) that was assessed indirectly as grain extract viscosity per unit mass of arabinoxylans. Amongst wheat lines studied, only two of them exhibited both high grain extract viscosity and high concentration of phenolic compounds. Genotypes, combing high viscous potential with high  antioxidant capacity as well as increased share of soluble dietary fiber polysaccharides, should represent the starting material for the breeding of new wheat cultivars designed for production of functional food.
Źródło:
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2023
0373-7837
2657-8913
Pojawia się w:
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Techno-Functional and Bioactive Properties and Chemical Composition of Guava, Mamey Sapote, and Passion Fruit Peels
Autorzy:
López-Martínez, Leticia X.
Villegas-Ochoa, Mónica A.
Domínguez-Avila, J. Abraham
Yahia, Elhadi M.
Gonzalez-Aguilar, Gustavo A.
Powiązania:
https://bibliotekanauki.pl/articles/24024619.pdf
Data publikacji:
2023-11-02
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
tropical fruits
phenolic profile
antioxidant potential
enzyme inhibition
glucose adsorption capacity
fat/oil binding capacity
sodium cholate binding capacity
Opis:
Due to their nutritional and sensorial characteristics, tropical fruits like guava, mamey sapote, and passion fruit are regularly incorporated into daily diets. Their by-products, especially peels, are approximately 10 to 35% of their weight and possess an important content of bioactive compounds, such as dietary fiber and phenolics. The nutritional, technological, physio-functional properties and phenolic compound compositions of guava, mamey sapote, and passion fruit peels were studied. Peels had promising techno- and physio-functional characteristics, good dietary fiber contents (45.18-61.42 g/100 g), and phenolic profiles with ferulic acid, gallic acid, p-coumaric, and catechin as the main compounds. Peel powders also showed excellent DPPH radical scavenging activity (125.3–252.4 µmol TE/100 g) and Trolox equivalent antioxidant capacity, TEAC (369.2–656.8 µmol TE/100 g). The α-amylase and lipase inhibitory activity varied from 28.15 to 51.4% and 30.89 to 57.15%, respectively. Higher values of α-glucosidase inhibition capacity were found, ranging from 51.64 to 70.32%. The chemical composition and properties reported in the present work suggest that peel powders of these guava, mamey sapote, and passion fruit could be used as constituents in different foods, such as bakery and meat goods, with beneficial health effects like control of hyperglycemia, improved intestinal function, and control of overweight; however, more studies are necessary for animal models and humans to confirm these bioactivities conclusively.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2023, 73, 4; 311-321
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of enzymatic pretreatment on yield and chemical composition of Rosmarinus officinalis essential oil
Autorzy:
Dzięcioł, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2174831.pdf
Data publikacji:
2022
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Rosmarinus officinalis essential oil
Rosmarinus officinalis hydrolate
modification of hydrodistillation
enzymatic pretreatment
total phenolic content (TPC)
Opis:
Effect of enzymatic pretreatment before hydrodistillation process on yield and composition of Rosmarinus officinalis essential oil was studied. Results obtained by using two selected commercial enzymes applied in food and beverage industry were compared. Control process with non-enzymatic pretreatment in analogous conditions was also performed for proper interpretation of results. Application of gas chromatography with mass selective detector (GC-MS) enabled analysis and comparison of essential oils composition. Moreover, total phenolic content (TPC) was determined spectrophotometrically in post-processing hydrolates, which are also valuable products e.g. for cosmetic applications. Modifications of isolation process by pretreatment with selected enzymes resulted in significant increase in essential oil yields in comparison to conventional hydrodistillation and control process with non-enzymatic pretreatment in analogous conditions. No substantial changes in the composition of obtained essential oils were observed. In post-processing hydrolates higher values of total phenolic content (TPC) were found both after enzymatic and non-enzymatic pretreatment.
Źródło:
Polish Journal of Chemical Technology; 2022, 24, 4; 61--66
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lightweight particleboards - manufacturing modification using a blowing agent from the group of bicarbonates
Autorzy:
Bednarczyk, Dominika
Boruszewski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2171742.pdf
Data publikacji:
2022
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
low density
lightweight particleboard
blowing agent
sodium bicarbonate
phenolic resin
Opis:
Lightweight particleboards - manufacturing modification using a blowing agent from the group of bicarbonates. Although the low-density particleboards have grown in popularity, due to their facilitated transportation and a lower mass in the assembled finished products, there is still certain constraints in their use caused by limited mechanical properties. These obstacles may be overcome by the mechanism of foaming the polymers that bind wood particles in the boards’ structure. The aim of this study was to determine the possibility of using sodium bicarbonate as a blowing agent of phenolic resin used for bonding wood particles in the technology of lightweight particleboards. It was found that the addition of sodium bicarbonate in the amount of 5% in relation to the dry weight of the phenolic resin significantly increase the internal bond strength of the manufactured particleboards.
łyty wiórowe o obniżonej gęstości - modyfikacja wytwarzania przy użyciu poroforu z grupy wodorowęglanów. Pomimo tego, że płyty wiórowe o obniżonej gęstości zyskują na popularności, ze względu na ułatwiony transport i niższą masę gotowych produktów, nadal istnieją pewne utrudnienia w ich zastosowaniu, spowodowane niedostatecznymi właściwościami mechanicznymi. Ograniczenia te mogą zostać zminimalizowane dzięki zastosowaniu mechanizmu spieniania żywicy wiążącej cząstki drewna w płytach wiórowych. Celem pracy było określenie możliwości zastosowania wodorowęglanu sodu jako poroforu żywicy fenolowej stosowanej do zaklejenia cząstek drewna w technologii lekkich płyt wiórowych. Stwierdzono, że dodatek wodorowęglanu sodu w ilości 5% w stosunku do suchej masy żywicy fenolowej istotnie zwiększa wytrzymałość na rozciąganie prostopadle do płaszczyzny płyty w wytworzonym materiale.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2022, 117; 55--62
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Profil chemiczny ziarna jęczmienia jako wskaźnik wartości użytkowej
Chemical profile of barley grain as an indicator of value in use
Autorzy:
Wiśniewska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/2199202.pdf
Data publikacji:
2022-12-30
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
β-glukan
błonnik pokarmowy
składniki odżywcze
wskaźnik jakości Q
związki fenolowe
β-glucan
dietary fiber
nutrients
quality index Q
phenolic compounds
Opis:
Celem prowadzonych badań było określenie zależności pomiędzy składnikami chemicznymi ziarna jęczmienia, a jego wartością użytkową. W badaniach wykorzystano ziarno 2 odmian (Soldo i Planet) i 2 rodów (STH 3.368 i STH 3.1491) jęczmienia jarego, które pochodziło z jednego miejsca i roku uprawy (ZD HAR Radzików). W materiale badawczym oznaczono zawartość związków odżywczych i bioaktywnych oraz dokonano pomiaru lepkości wodnego ekstraktu ziarna (WEV), zastosowanego jako miara właściwości funkcjonalnych jęczmienia. Dodatkowo, badane genotypy poddano słodowaniu i ocenie browarnej. Otrzymane wyniki umożliwiły ocenę materiału roślinnego pod kątem jego wykorzystania oraz wpływu genotypu na badane cechy. Odmianę Planet można rekomendować jako bardzo dobry jęczmień browarny, podobnie jak ród STH 3.1491, cechujący się niską lepkością wodnego ekstraktu ziarna i małą zawartością związków fenolowych (TPC), frakcji rozpuszczalnej arabinoksylanów (S-AX) oraz β – glukanu (BG). Ponadto uzyskano wysoką istotną korelację pomiędzy WEV, a sumą β – glukanu i frakcji rozpuszczalnej arabinoksylanów (r=0,995**). Zawartość białka, lipidów, ligniny, błonnika oraz związków fenolowych i frakcji rozpuszczalnej arabinoksylanów była istotnie uwarunkowana genotypem.
The aim of the research was to determine the relationship between the chemical components of barley grain and its use value. Material for the study comprised on the grain of 2 varieties (Soldo and Planet) and 2 families (STH 3.368 and STH 3.1491) of spring barley, harvested in one year and located in the same climatic area  (ZD HAR Radzików). In the research material the content of nutrients and bioactive compounds was determined as well as the viscosity of the water extract (WEV) of grain, used as an indicator of the functional properties of barley. In addition, the researched genotypes were subjected to malting and brewing evaluation. The obtained results made it possible to evaluate the plant material in terms of its use and the influence of the genotype on analyzed traits. The Planet variety can be recommended as a very good malting barley, similarly to the STH 3.1491 family, characterized by a low viscosity of the aqueous grain extract and a low content of phenolic compounds (TPC), soluble fraction of arabinoxylans (S-AX) and β-glucan (BG). In addition, a high significant correlation was obtained between WEV and the sum of β-glucan and soluble fraction of arabinoxylans (r=0.995**). The content protein, lipids, lignin, fiber, phenolic compounds and soluble fraction of arabinoxylans was significantly conditioned by the genotype.
Źródło:
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2022, 297/298; 57-62
0373-7837
2657-8913
Pojawia się w:
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The removal efficiency and reaction mechanism of the aluminum coagulant on phenolic compounds in the presence of hardness salts
Autorzy:
Hecini, Lynda
Boukerker, Hassen
Kherifi, Wahida
Mellah, Abdelkarim
Achour, Samia
Powiązania:
https://bibliotekanauki.pl/articles/2174369.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
phenolic compounds
hardness salt
aluminum sulphate
coagulation-flocculation
mechanism
Opis:
This study is the evaluation of the coagulation efficiency of the aluminum sulfate on the removal of catechol and pyrogallol. The study has focused on the impact of inorganic components of hardness Algerian waters. Jar-test trials were conducted on the two phenolic compounds dissolved in distilled water only, which was later enriched with minerals. Several reaction parameters varied, including the effect of pH and the influence of the salt content, and this approach yielded a better understanding of interaction between phenolic compounds and calcium/magnesium salts. The results indicate that the process efficiency depends on the number and position of OH in molecules. The main mechanisms would be either a physical adsorption, an exchange of ligand, or complexation on the floc surface of aluminum hydroxide. Moreover, the addition of inorganic salts appears to improve removal efficiency of tested phenolic compounds and have an effect on the optimal pH range for coagulation.
Źródło:
Journal of Water and Land Development; 2022, 54; 225--233
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ultrasound-Assisted Extractions for Improving the Recovery of Phenolics and Charantin from Bitter Melon and for Increasing the Antioxidant, Antidiabetic and Anti-Obesity Activities of Its Extracts
Autorzy:
Lee, Jin Ju
Yoon, Kyung Young
Powiązania:
https://bibliotekanauki.pl/articles/2051043.pdf
Data publikacji:
2022-06-02
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
bitter melon
ultrasound-assisted extraction
charantin
phenolic compounds
antioxidant activity
antidiabetic activity
Opis:
Bitter melon is rich in bioactive compounds and has a significant potential for commercial use as a functional food material. Its bioactive compound-rich extract was prepared using probe- or bath-type ultrasound-assisted extraction (UAE) with 60% (v/v) ethanol or distilled water. The composition and bioactivity of the extracts prepared using UAE was compared with those obtained by conventional extraction methods, such as autoclave extraction, ethanol extraction, and hot-water extraction. Although the yield of the autoclave extraction was the highest, the extracts obtained using UAE and aqueous ethanol exhibited a higher total phenolic content, antioxidant activity, antidiabetic activity (α-amylase and α-glucosidase inhibitory activities), and pancreatic lipase inhibitory activity than the conventional extracts. In particular, UAE with probe system and aqueous ethanol (UAE-P-E) was effective for extracting bioactive compounds, such as phenolics (total phenolic content of 18.73 mg GAE/g extract) and charantin (28.56 mg/g extract). Among all extracts, this prepared by UAE-P-E showed the highest DPPH radical scavenging activity (IC50 of 0.55 mg/mL), ferric reducing antioxidant power (250.5 μmol/g extract), and pancreatic lipase inhibitory activity (76.38% at a concentration of 3.0 mg/mL). These results suggest that bioactive compound-rich extracts from bitter melon obtained using UAE, especially UAE-P-E, are expected to have high application potential as a functional food material, and are also expected to be used as natural antioxidant, antidiabetic, and anti-obesity agents.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2022, 72, 2; 141-150
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie pulsacyjnego pola elektrycznego (PEF) jako zabegu wspomagającego ekstrację
Application of the pulsed electric field (PEF) as the extraction assistant treatment
Autorzy:
Nowosad, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/2086741.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
ekstrakcja
pulsacyjne pole elektryczne
biopaliwo
związki fenolowe
browarnictwo
extraction
pulsed electric field
biofuel
phenolic compounds
brewing
Opis:
Fruits, vegetables and yeast contain numerous biologically active compounds called "phytonutrients". The phytonutrients can include phenolic compounds, minerals and vitamins. Conventional techniques used to extract these nutrients suffer from several disadvantages. These methods are characterized by poor efficiency of the extraction process, high energy and solvent consumption, long processing times and the formation of thermal decomposition by products. For this reason, scientists together with food engineers are looking for a safe and efficient extraction of bioactive compounds. In recent years, several modern techniques to support the extraction process have been proposed. One of them is the pulsed electric field (PEF). Pulsed electric field is one of the non-thermal methods used to control microbiological safety and change the properties (nutritional, sensory and physicochemical) of food products. The principle of operation of PEF is based on the formation of pores in the cell membrane under the influence of short bursts of electricity, which increases its permeability. Due to the formation of pores, various components, such as ions, molecules and other more complex compounds, such as vitamins or lipids, can flow freely through the cell membrane. The use of PEF for extraction reduces the process time, increases the efficiency of the process and is characterized by a low processing temperature. This review shows the use of a pulsed electric field as a process supporting the extraction of biological compounds from algae, vegetables, fruits and in the brewing industry. The optimal conditions of the pulsed electric field, which may affect the extraction efficiency, e.g. electric field strength, number of pulses and pulse width, are also discussed. Based on the collected literature data, it was found that the pulsed electric field contributes to the increase of the extraction efficiency.
Źródło:
Wiadomości Chemiczne; 2022, 76, 3-4; 207--220
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
β-Glucan and Aronia (Aronia melanocarpa) Phenolics: Interactions During In Vitro Simulated Gastrointestinal Digestion and Adsorption
Autorzy:
Jakobek, Lidija
Ištuk, Jozo
Tomac, Ivana
Matić, Petra
Powiązania:
https://bibliotekanauki.pl/articles/2152155.pdf
Data publikacji:
2022-11-14
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
anthocyanin
bioaccessibility
chokeberry
flavonol
phenolic acid
Opis:
Interactions between phenolics and dietary fibers, such as β-glucan, are important for the bioactivities of phenolics. However, interactions between aronia phenolics and β-glucan in the digestion process, both promoted for their health benefits, have not been studied. The aim was to study the interactions between aronia phenolics and β-glucan in an in vitro simulated digestion and in the adsorption process. After extracting aronia phenolics with chemically- and enzymatically-assisted extraction, and characterizing the phenolics, the aronia extract was subjected to simulated oral, gastric, and intestinal digestion without or with β-glucan. Flavonol release increased throughout oral, gastric, and intestinal digestion, while the recovery of phenolic acids and anthocyanins after an increase in the gastric phase, decreased in the intestinal phase. β-Glucan entrapped phenolics, lowering the quantities of recovered phenolics. It also adsorbed aronia phenolics at pH 1.5, 3.0, and 7.0. In comparison to 15 and 30 mg/L concentrations of β-glucan, a solution with the lower concentration (15 mg/L) allowed for the entrapment of the higher quantity of phenolics and had high adsorption capacity. Entrapment of aronia phenolics by β-glucan is important for the bioaccessibility and concentration of phenolics that reach the lower parts of the digestive tract which depends on β-glucan concentration.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2022, 72, 4; 371-380
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antibiofilm activity against Staphylococcus aureus and content analysis of Taraxacum Officinale phenolic extract
Autorzy:
Xu, P.
Xu, X.B.
Khan, A.
Fotina, T.
Wang, S.H.
Powiązania:
https://bibliotekanauki.pl/articles/2087162.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Taraxacum Officinale
phenolic
antibacterial mechanism
HPLC
Staphylococcus aureus
Źródło:
Polish Journal of Veterinary Sciences; 2021, 24, 2; 243-251
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 191

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