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Tytuł:
The relationships between food attitudes and sociodemographic determinants among students of the Third Age University in northern Poland
Autorzy:
Tanska, M.
Babicz-Zielinska, E.
Powiązania:
https://bibliotekanauki.pl/articles/2087336.pdf
Data publikacji:
2020
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
food attitudes
elderly people
determinants of food choice
Opis:
Background. A thorough understanding of nutritional needs, food attitudes, and preferences are necessary for aging societies. So far the detailed studies on food attitudes and their determinants among elderly people were relatively scarce. Objective. This research was aimed at the determination of relationships between food attitudes and some sociodemographic features among elderly people, students of the Third Age University in Poland. Material and methods. The study was conducted among 607 students of the Third Age University based on the authors` questionnaire. The survey was anonymous. The attitudes towards health benefits of foods, novel foods, light and organic foods, food as a reward and pleasure, restriction of food intake, and the packaging and composition of food were investigated. Results. The relationships between attitudes and gender, age, education level, professional activity, BMI index, and economic status were differentiated. The positive attitudes over 50% were noticed only for the health benefits of foods and the packaging and composition of the food. For the other attitudes, the neutral attitudes were dominant. The three significant relations between attitudes and sociodemographic determinants were notices only for gender, two such relations were found for professional activity, the economic status and BMI index, and relations between age or education level – only for a single attitude. Conclusions. The obtained results may be explained as a complex effect of specifics of this group and the overall tendency for conservative attitudes observed among elderly people. The food attitudes are significantly related to gender and other determinants become much less important for the surveyed group of the participants of the Third Age University.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2020, 71, 4; 455-465
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vegetable oils as additives to improve the lubricity of low-sulphur fuels
Autorzy:
Ambrosewicz-Walacik, M.
Pszczółkowski, B.
Tańska, A.
Powiązania:
https://bibliotekanauki.pl/articles/247047.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
sulphur content
different species
vegetable oils
biofuel production
lubricity
Opis:
The aim of the study was to determine the sulphur content in 33 samples of oils pressed from different species of vegetable. The unconventional oil samples were purchased from commercial store. Oils was analysed in terms of sulphur content according to the method using X-ray fluorescence spectrometry with wave dispersion, that is described in the PN-EN ISO 20884, 2012 standard. Obtained results of sulphur analysis were presented as the arithmetic mean ± standard deviation (from three replicates) and statistically analysed using the Statistica 13.0 PL program. In order to indicate significance of differences between oils analysis of variance (ANOVA) with Tukey’s test of p ≤ 0.05 significance level was used. The statistical analysis indicated significant differences in the content of sulphur content in the analysed vegetable oils, which could affect the lubricity of prepared fuel blends and in some cases significantly, increase the sulphur content above acceptable value 10 ppm. It was concluded that vegetable oils could be a suitable raw material improving the lubricating properties of low-sulphur diesel oils. However, due to significant differences in the sulphur content in the analysed samples, the content of this element should be analysed beforehand in order to eliminate the possibility of exceeding the permissible level of sulphur in transport fuels.
Źródło:
Journal of KONES; 2018, 25, 2; 31-36
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biochemical features of winter wheat grain affected by biological and chemical control treatments
Autorzy:
Wachowska, U.
Konopka, I.
Tańska, M.
Korzeniewska, E.
Powiązania:
https://bibliotekanauki.pl/articles/962675.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
A new trend in plant protection consists in the integration of biological and chemical control treatments. Unfortunately, the biological control agents for winter wheat are still in short supply. Bacteria of the genus Sphingomonas have a unique ability to produce prolyl endopeptidases. Those enzymes are capable of hydrolyzing the peptide PQPQLPYPQPQLP. During the growing season, the bacteria may be used to protect winter wheat against infections caused by fungi of the genera Fusarium. The objective of this study was to evaluate the effectiveness of bacterial isolates in protecting field- -grown winter wheat plants against spike infections and to assess the effect of bacteria on the chemical composition and microbiological purity of winter wheat grain. The effects of bacteria of the genus Sphingomonas as biological control agents against Fusarium head blight (FHB) of winter wheat were evaluated in a three-year field experiment. For comparative purposes, the fungicides propiconazole at the elongation stage (BBCH 31) and fluoxastrobin + prothiconazole at the heading stage (BBCH 55) were applied. In 2010 and 2011, the application of cell suspensions of bacteria alleviated the symptoms of disease by 27.3% and 75.8%, respectively in comparison with control. Wheat grain yield was higher in plots subjected to the biological and chemical treatment (by an average of 9.5 and 13.6%, respectively). For the first time, we observed that biological control modified the chemical characteristics of wheat grain. In control grain, the content of gluten proteins was 7.9% higher than in grain treated with the biocontrol agent. In wheat grain treated with the biocontrol agent, the highest decrease was observed in the concentrations of alpha/beta-gliadins (10.59%), but grain quality was most affected by an estimated 8% decrease in the content of HMW glutenins. Biological treatment inhibited the growth pathogens of F. culmorum, F. poae, F. sporotrichiodes and F. avenaceum. A cell suspension of bacteria did not inhibit the growth of yeasts and epiphytic bacteria of the genus Azotobacter on grains.
Źródło:
Journal of Elementology; 2017, 22, 4
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fatty acid composition as a parameter of using vegetable oils for biofuel production
Autorzy:
Ambrosewicz-Walacik, M.
Tańska, M.
Walacik, M.
Powiązania:
https://bibliotekanauki.pl/articles/134106.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
vegetable oils
quality
fatty acids composition
biofuels production
niekonwencjonalne oleje roślinne
jakość
skład kwasów tłuszczowych
produkcja biopaliw
Opis:
The aim of the study was to show the validity of determining the quality of oils intendent for the biofuels production. One of the main discriminant that should be used to assess the suitability of oil raw materials for the fuel purposes is the composition of fatty acids. The research was conducted on 13 different samples of vegetable oils, that were cold-pressed from the seeds of various species, including rape, camelina, flax (light and dark), mustard, milk thistle, hemp, evening primrose oil, amaranth, sunflower, soybean, and cumin. The analysis of the fatty acid composition showed significant differences between the analysed oil samples, both within the species and varieties of oilseeds. The results indicate the need for continuous quality control of oils and fats led to the production of biodiesel in the small households and large commercial enterprises, because as it was indicated by the analysis of fatty acids composition rape seeds of different varieties are characterized by the diverse quality.
Źródło:
Combustion Engines; 2017, 56, 2; 38-42
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production of fuel blends from diesel oil and waste products
Autorzy:
Ambrosewicz-Walacik, M.
Tańska, M.
Walacik, M.
Nitkiewicz, S.
Powiązania:
https://bibliotekanauki.pl/articles/133021.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
fuel blends
diesel oil
pyrolytic oil
frying oil
transestrification
physicochemical properties
mieszanki paliwowe
olej napędowy
olej pirolityczny
transestryfikacja
właściwości fizyko-chemiczne
Opis:
The aim of the study was to evaluate the physico-chemical parameters of the fuel blends consist of a diesel oil and waste products, such as a pyrolytic oil from car tires and a frying oil. The samples were characterized by the kinematic viscosity at 40°C, density at 15°C, acid value, sulphur content, temperature of flash point and temperature of cold filter plugging point. The obtained results indicated that the fraction of the pyrolysis oil due to the very low temperature of flash-point and high sulphur content is a difficult material to use in the biofuels sector. While the sulphur content of that material may be reduced by the desulphurisation, whereas the increasing temperature of flash point, which greatly influenced the low value of this parameter for the mixture, is problematic. What is more, a high degree of oxidation of the frying oil determined too low stability of the produced methyl esters, and thus the fuel blends.
Źródło:
Combustion Engines; 2017, 56, 4; 255-258
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unconventional vegetable oils as raw materials for biodiesel production
Autorzy:
Ambrosewicz-Walacik, M.
Tańska, M.
Walacik, M.
Kozłowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/133654.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
unconventional vegetable oils
quality
fatty acids composition
biofuels production
niekonwencjonalne oleje roślinne
jakość
skład kwasów tłuszczowych
produkcja biopaliw
Opis:
The aim of the study was to determine the possibility of using the unconventional vegetable oils for the biofuel production. The research material were cold-pressed oils from the seeds of milk thistle, hemp and evening primrose. After conducting the initial physicochemical characteristics of oil samples, including the determination of sulphur content, acid number, viscosity at 40°C, density at 15ºC, oxidation stability and fatty acid composition, analysed oils have been subjected to the transesterification process. The roduced methyl esters were further characterized by the above-mentioned features. Additionally, the temperatures of cold filter plugging point, cloud point and flash point were determined. On the basis of the conducted analyses it was demonstrated that the obtained oils, due to the high, far in excess of acceptable, values of the viscosity and density, and too low oxidative stability could not be used as a pure fuel. A similar conclusion was formulated in case of the produced methyl esters.
Źródło:
Combustion Engines; 2017, 56, 1; 197-200
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geometrical features of seeds of new pumpkin forms
Cechy geometryczne nasion nowych form dyni
Autorzy:
Ogrodowska, D.
Roszkowska, B.
Tańska, M.
Powiązania:
https://bibliotekanauki.pl/articles/93646.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
pumpkin
seeds
form
geometrical features
Digital Image Analysis
dynia
nasiona
forma
cechy geometryczne
cyfrowa analiza obrazu
Opis:
Plant growers are looking for new crops which would make farms and processing plants more profitable. Currently, in Poland, waste-free pumpkin processing is mainly associated with pumpkin seed production, oil extraction, pulverization of pumpkin oil cake to obtain pumpkin meal, the small-scale use of flesh in food production, but mainly the utilisation of flesh as a feed additive. During technological processes applied for the processing of pumpkin seeds it is important to be familiar with their physical characteristics. The aim of this study was to analyse the geometric characteristics of the seeds of new nine forms of the pumpkin variety Olga, which were bred by researchers from the Department of Plant Genetics, Breeding and Biotechnology at the Warsaw University of Life Sciences. Geometrical features were measured using the Digital Image Analysis (DIA) set, consisting of a digital camera (Nikon DXM 1200), computer and lighting (KAISER RB HF). The following geometrical features were measured: length, width, diameter, perimeter, area, circularity and elongation. Additionally, thickness of the seeds was measured by a calliper. Seeds of the studied forms of hull-less pumpkins differed from the standards in the dimensions and shape, whereas significant differences were demonstrated for the Olga variety standard. The most variable geometric characteristic of the seeds under study was area, while the least variable geometric characteristics of the pumpkin seeds turned out to be the circularity and width.
Hodowcy roślin szukają nowych roślin, które sprawiają, że gospodarstwa i zakłady przetwórcze są bardziej opłacalne. Obecnie w Polsce, bezodpadowe przetwarzanie dyni jest związane przede wszystkim z produkcją nasion dyni, wydobyciem oleju, rozdrabnianiem makucha do postaci mączki dyniowej, wykorzystaniem na małą skalę miąższu w produkcji żywności, ale przede wszystkim wykorzystanie miąższu jako dodatku do pasz. Podczas procesu technologiczne stosowanego do obróbki nasion dyni ważna jest znajomość ich cech fizycznych, dlatego celem niniejszej pracy była analiza cech geometrycznych nasion nowych dziewięciu form odmiany dyni Olga, które zostały wyhodowane przez naukowców z Katedry Genetyki, Hodowli Roślin i Biotechnologii Uniwersytetu Przyrodniczego w Warszawie. Cechy geometryczne były mierzone za pomocą zestawu do Cyfrowej Analizy Obrazu (DIA) składającego się z kamery cyfrowej (Nikon DXM 1200), komputera i oświetlenia (KAISER RB HF). W pracy zostały zmierzone takie cechy geometryczne jak: długość, szerokość, średnica zastępcza, obwód, pole powierzchni, kolistość i wydłużenie. Dodatkowo zmierzono grubość nasion za pomocą suwmiarki. Nasiona badanych form dyni bezłuskowej różniły się od standardów wymiarami i kształtem, przy czym istotne różnice wykazano w porównaniu ze standardem odmiany Olga. Najbardziej zmienną cechą geometryczną badanych nasion było pole powierzchni, natomiast najmniej zmienne okazały się takie cechy jak kolistość i szerokość.
Źródło:
Agricultural Engineering; 2016, 20, 1; 111-118
2083-1587
Pojawia się w:
Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibility of use a small fraction of rape seeds for the production of biofuels for compression ignition engines
Autorzy:
Tańska, M.
Ambrosewicz-Walacik, M.
Nitkiewicz, S.
Powiązania:
https://bibliotekanauki.pl/articles/247821.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
rape seeds
size
physical properties
chemical properties
biofuel production
Opis:
The aim of the study was to determine the possibility of using small seeds of rape (diameter <1.6 mm,) perceived as a raw material of inferior nutritional quality, for the biofuels production. Research material was samples of industrial mass of rapeseeds originating from three Polish regions. The seed mass was cleaned in a sieve separator, removing mineral matter (stones), cereal grains, stems and dusts. Then, the sample was sifted through a set of sieves and two fractions were received: seeds with diameter >1.6 mm – sample F1 and with diameter < 1.6 mm – sample F2. Each fraction was characterized by its share in bulk mass, moisture content, 1000 seeds weight, yield of pressing, fat content and phosphorus content. Cold-pressed oils were determined in terms of total and unhydrated phosphorus content, acid value and fatty acids content. Fractionation by weight rapeseeds with using an industrial sieve separation may provide a simple method for improving the technological value of the raw material used for food purposes, and thus obtain fine seed that could be intended exclusively for the production of technical oil. Despite the stated inferior quality of small seeds, it was found that the increased values of some discriminants would not have impact on the technology of biofuel production and cost of production.
Źródło:
Journal of KONES; 2016, 23, 1; 391-395
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of oils quality and transesterification method on the degree of conversion of the fatty acids methyl esters
Autorzy:
Ambrosewicz-Walacik, M.
Tańska, M.
Jankowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/243737.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
oil
fat
free fatty acids
acid value
method of transesterification
Opis:
The aim of the work was to determine the effect of oils quality and transesterification method on the degree of conversion of the fatty acids. Material consisted of 4 samples of oil: rapeseed oil obtained by the laboratory hot pressing of rape seeds oils in approx. 80 °C, waste rapeseed and palm oils and one refined rapeseed oil. Oils used in the one-stage transesterification were characterized by a lower hydrolysis and oxidation degree than the oils used in two-stage transesterification (double-base and base-acid method). The quality of the obtained crude methyl esters was determined in terms of acid number, peroxide value, the lipid composition by thin layer chromatography. Quantitative testing of the degree of transesterification and the share of individual esters of fatty acids was conducted by gas chromatography. Studies have shown that that degree of conversion of the fatty acid methyl esters is dependent on both the quality of the oil and the method of transesterification. If oils are characterized by a good quality, then a method of transesterification is less important. However, if oils are heavily contaminated, then the right technology for their transesterification should be chosen, e.g. oil with high content of FFA should be subjected to base-acid transesterification. Studies have shown. If oils are characterized by a good quality, then a method of transesterification is less important. However, if oils are heavily contaminated, then the right technology for their transesterification should be chosen, e.g. oil with high content of FFA should be subjected to base-acid transesterification.
Źródło:
Journal of KONES; 2016, 23, 2; 17-23
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of the ultrasounds treatment on frying oils intended for biodiesel production
Autorzy:
Ambrosewicz-Walacik, M.
Szostak, P.
Nitkiewicz, S.
Tańska, M.
Walacik, M.
Powiązania:
https://bibliotekanauki.pl/articles/245084.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
frying oil
ultrasounds
fatty acids composition
transesterification
yield of biodiesel
Opis:
The aim of the study was to determine the ultrasounds treatment of frying oil on their properties important in order to biodiesel production. The research material was a frying oil, which prior to transesterification oil was treated with ultrasounds (37 kHz) during 15, 30 and 60 min. In next step, prepared samples were analysed in terms of fatty acid composition, acid value, FFA % and then subjected to alkali transesterification process. After producing methyl esters the yield of biodiesel was analysed with thin liquid chromatography technique (TLC), and then samples were characterized in terms of viscosity in 40 °C, density at 15 °C, acid value, sulphur content and flash point. The results showed that an ultrasonic treatment had a little impact on the fatty acid composition of the test samples. The yield of biodiesel was the higher the longer time of ultrasounds treatment were used. One the other hand, determined with thin liquid chromatography technique yield of biodiesel was the higher the longer time of ultrasounds treatment were used. What is more, the ultrasounds treatment of oil before transesterification process had no impact on viscosity, density and acid value of these samples, while flash point values and sulphur content were changed.
Źródło:
Journal of KONES; 2016, 23, 3; 19-24
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potencjał podaży w kontekście wprowadzenia nowego produktu regionalnego "wołowina sudecka"
Potential supply in the context of implementation of a new regional product "Wolowina Sudecka"
Autorzy:
Minta, S.
Tanska-Hus, B.
Nowak, M.
Powiązania:
https://bibliotekanauki.pl/articles/43780.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
Tematy:
produkty regionalne
wprowadzanie na rynek
mieso wolowe
produkt wolowina sudecka
podaz
Źródło:
Journal of Agribusiness and Rural Development; 2014, 33, 3
1899-5241
Pojawia się w:
Journal of Agribusiness and Rural Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Koncepcja wdrożenia produktu regionalnego „Wołowina Sudecka” w kontekście ochrony środowiska
The Implementation of Concept of a Regional Product „Sudeten Beef” in the Context of Environment Protection
Autorzy:
Minta, S.
Tańska-Hus, B.
Nowak, M.
Powiązania:
https://bibliotekanauki.pl/articles/1819110.pdf
Data publikacji:
2013
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
produkt regionalny
ochrona środowiska
regional product
environmental protection
Opis:
This paper presents the issues related to the specific of market of regional and traditional products and shows how important may be the development of this market in the context of environmental protection. This is due to the fact that the idea of food production and consumption in the same region reduces the need for long-distance transport (this reduces fuel consumption and also helps reduce the greenhouse effect). Another issue is that the regional products are made from components having a common ecological character (this helps to reduce chemical treatments that may harm nature). Besides, in some cases, regional products can contribute to maintaining natural ecosystems and enhance natural values of a specific area. An example of this is described in detail in this study regional product “Sudeten Beef”, which is produced in the Polish part of the Sudetes Mountains in the voivodeship of Lower Silesia (south-western Poland). Regional products can play an important role in sustainable development, particularly in relations to the peripheral areas. This applies to environmental aspects as well as the typical economic. In this article defines sustainable development as a way of doing business, which on the one hand give a positive economic results, and at the same time will as far as possible to care for the environmental and does not cause over-exploitation of resources, so that future generations can also use them. In addition, sustainable development also means equalizing opportunities between regions with high growth potential (usually of a large urban areas) and areas with less growth potential (in Polish condition this is particularly true of rural areas far from big cities). According to such assumptions, the development of regional product’s market can contribute to sustainable economic development of rural areas, because it gives opportunities to create new jobs, increasing incomes and the stimulation of the local community. Regional product „Sudeten Beef”, which is the main focus in this article, has a good chance to market success. This product comes from meat obtained from cattle in meat and combined type, which is kept in Sudeten districts. This is due to both the natural character of the Sudetenland, and the potential of demand and supply in the study area. Placing on the market “Sudeten Beef” should enable the development of agricultural production in direction to which the region is especially predisposed because of natural conditions. This product may also be a source of additional income for local farmers and entrepreneurs. The benefits reach also the consumers who receive high quality and unique food product that will enrich the catering and tourist offer in the study area. Placing such type of product on the market can run non-agricultural activities in rural areas covered by the project. This type of activity can help in the integration of local communities related to agricultural, food production, catering and tourism. Finally it can help to preserve valuable environmental assets Sudeten Mountains (grazing cattle will help to maintain a balance in areas of high natural value, due to the act as “natural lawn”).
Źródło:
Rocznik Ochrona Środowiska; 2013, Tom 15, cz. 3; 2887-2898
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Podaż i popyt produktu regionalnego wołowina sudecka
Supply and demand for the regional product sudeten beef
Autorzy:
Tanska-Hus, B.
Minta, S.
Nowak, M.
Powiązania:
https://bibliotekanauki.pl/articles/868713.pdf
Data publikacji:
2013
Wydawca:
The Polish Association of Agricultural and Agribusiness Economists
Opis:
Przedstawiono możliwość wdrożenia produktu regionalnego, jakim jest wołowina sudecka. W tym celu dokonano analizy wielkości i struktury stad bydła utrzymywanego w powiatach sudeckich. Oszacowano wielkość i strukturę bazy hotelowo-gastronomicznej, w której można sprzedawać potrawy z wołowiny sudeckiej. Określono także wielkość popytu na ten produkt. Badania prowadzone były w latach 2010-2011 na terenie powiatów: kłodzkiego, jeleniogórskiego, lwóweckiego, lubańskiego, wałbrzyskiego, kamiennogórskiego, dzierżoniowskiego i ząbkowickiego. Z badań wynika, że 275 placówek hotelowo-gastronomicznych sprzedało w badanym okresie ponad 6 min posiłków głównych, natomiast szacowaną sprzedaż posiłków z udziałem wołowiny sudeckiej wyliczono na 851 200, a szacowany roczny popyt gastronomii na wołowinę sudecką określono na 85,1 t.
The paper presents the possibility of implementation of the regional product sudeten beef For this purpose it analyzes the size and the structure of herds maintained in sudeten counties. Moreover in the paper was estimated the size and the structure of accommodation and gastronomic facilities in which it is possible to sell meals of the sudeten beef. Volume of demand for this product was also determined. The study was conducted in the years 2010-2011 in the following districts: Kłodzko, Jelenia Góra, Lwówek, Lubań, Wałbrzych, Kamienna, Dzierżoniów and Ząbkowice. Research has shown that 275 objects sold during the period more than 6 million main dishes, while the projected sale of meals with Sudeten beef was calculated on 851 200 meals. The projected annual demand for catering to the sudeten beefissetat85.l t.
Źródło:
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu; 2013, 15, 3
1508-3535
2450-7296
Pojawia się w:
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ warunków ogrzewania nasion rzepaku i gorczycy białej na cechy olejów do produkcji biodiesla
Impact of heating conditions of rapeseed and mustard seeds on the characteristics of oils for the biodiesel production
Autorzy:
Tanska, M.
Rotkiewicz, D.
Ambrosewicz-Walacik, M.
Powiązania:
https://bibliotekanauki.pl/articles/833921.pdf
Data publikacji:
2013
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
rzepak
gorczyca biala
nasiona
ogrzewanie
temperatura
czas ogrzewania
tloczenie
wydajnosc tloczenia
oleje roslinne
biodiesel
jakosc oleju
rape
white mustard
seed
heating
temperature
heating time
oil pressing
efficiency
plant oil
biodiesel fuel
oil quality
Opis:
Celem badań było określenie wpływu zróżnicowanych warunków ogrzewania nasion rzepaku i gorczycy białej na wydajność tłoczenia oraz cechy olejów, jako potencjalnych surowców do produkcji biodiesla. Nasiona rzepaku i gorczycy poddano ogrzewaniu w trzech temperaturach (60, 80 i 100°C) przez okres 30, 60 i 90 min, a następnie wytłoczono oleje na laboratoryjnej prasie ślimakowej. Jakość olejów określono poprzez oznaczenie zawartości wody i związków lotnych, stopnia hydrolizy i utlenienia, zawartości chlorofilu i fosforu, barwy oraz składu kwasów tłuszczowych. Stwierdzono, że wraz ze wzrostem temperatury i czasu ogrzewania nasion następowało stopniowe zwiększanie wydajności tłoczenia, przy równocześnie istotnym pogarszaniu cech olejów. Oleje wydobyte z nasion ogrzewanych w najbardziej drastycznych warunkach, tj. 100°C/90 min, cechowały się wprawdzie najniższą zawartością wody i związków lotnych, ale najwyższą zawartością wolnych kwasów tłuszczowych, nadtlenków, barwników chlorofilowych i związków fosforu. Wykazano także, że ogrzewanie nasion rzepaku nie spowodowało zmian w składzie kwasów tłuszczowych. Biorąc pod uwagę zarówno wydajność tłoczenia, jak i jakość olejów w kontekście przydatności do produkcji biodiesla, za najbardziej optymalne warunki uznano ogrzewanie nasion w temperaturze 80°C w czasie 60 min.
The aim of the study was to determine the effect of heating conditions of rapeseed and mustard seeds on the pressing yield and characteristics of oils as potential materials for the biodiesel productions. Oils have been pressed from seeds heated at temperatures of 60, 80 and 100°C for 30, 60 and 90 minutes. Pressing was carried out in a laboratory expeller. Quality of oils was defined by determining water and volatile compound contents, the degree of hydrolysis and oxidation, content of chlorophyll and phosphorus, color and the fatty acids composition. It was found that with the increasing temperature and time of heating condition the yield of pressing increased while the quality of oils deteriorated. Oils extracted from seeds heated in the most drastic conditions, 100°C/90 min, were characterized by the lowest water and volatile compounds content and the highest amount of free fatty acids, peroxides, chlorophyll pigments and phosphorus compounds. It was also shown that heating of rape seeds has not changed the fatty acids composition. Taking into consideration the yield of pressing and the quality of oils in terms of suitability for the biodiesel production, the most optimum heating condition of seeds was at 80°C for 60 min.
Źródło:
Rośliny Oleiste - Oilseed Crops; 2013, 34, 1
1233-8273
Pojawia się w:
Rośliny Oleiste - Oilseed Crops
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie fluorescencyjnej spektroskopii synchronicznej do oceny jakości próbek ziarna pszenicy i nasion rzepaku
Application of synchronous scanning fluorescence spectroscopy to analysis quality of wheat grain and rapeseed samples
Autorzy:
Tańska, M.
Konopka, I.
Smyk, B.
Konopka, S.
Powiązania:
https://bibliotekanauki.pl/articles/271121.pdf
Data publikacji:
2013
Wydawca:
Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:
pszenica
rzepak
fluorescencyjna spektroskopia synchroniczna
analiza składowych głównych
wheat
rapeseed
synchronous scanning fluorescence spectroscopy
principal component analysis
Opis:
Celem prezentowanych badań było określenie możliwości zastosowania synchronicznej fluorescencji do odróżniania próbek ziarna pszenicy oraz nasion rzepaku różniących się jakością. Ocenie poddano próbki ziarna/nasion „zdrowych" oraz eksperymentalnie uszkodzonych termicznie (przesuszenie) i hydrolityczno-mikrobiologicznie (przechowywanie w warunkach podwyższonej wilgotności). Jakość kontrolnych próbek ziarna pszenicy i nasion rzepaku oceniono za pomocą standardowych wyróżników technologicznych oraz za pomocą analizy zawartości wybranych związków bioaktywnych (kwasy fenolowe, toko- chromanole, chlorofile). Wszystkie próbki poddano analizie spektralnej wykorzystując rejestrację synchroniczną widm fluorescencji. Zastosowanie analizy składowych głównych (PCA) pozwoliło na wskazanie głównych obszarów spektralnych wskazujących na różne typy (jakość) analizowanych próbek. Zastosowane warianty uszkodzenia ziaren/nasion bardziej wpłynęły na próbki nasion rzepaku.
The aim of this study was to determine the possibility of using synchronous fluorescence to distinguish the wheat grain and rapeseed samples of different quality. We compared "healthy" grain/seed samples and experimentally damaged by heat (drying) and moisture-microbial deteriorated by storing at high moisture content. Quality of control samples was evaluated using standard methods according to Polish Standards. Additionally some selected bioactive compounds (phenolic acids, tocochromanols and chlorophylls) were also analyzed. All samples were subjected to spectral analyses using synchronous fluorescence spectroscopy. Application of principal component analysis (PCA) allowed us to identify the main areas indicating different spectral types (quality) of the analyzed samples. Utilized variants of the grains/seeds deterioration affected more significantly the rapeseed samples quality.
Źródło:
Aparatura Badawcza i Dydaktyczna; 2013, 18, 4; 355-363
2392-1765
Pojawia się w:
Aparatura Badawcza i Dydaktyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
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