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Wyświetlanie 1-2 z 2
Tytuł:
Changes in bread making quality of wheat during postharvest maturations
Autorzy:
Szafrańska, A.
Stępniewska, S.M.
Powiązania:
https://bibliotekanauki.pl/articles/2083073.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
baking quality
gluten properties
wheat cultivars
wheat maturation
Opis:
The purpose of this study was to determine the changes in bread making quality for three wheat cultivars during their postharvest grain maturation phase. Grain samples were collected immediately after harvest in two consecutive years. Over the next 12 weeks the changes of the technological value of grains were determined. The wheat cultivars were characterized by varying quality in terms of the properties of gluten proteins. Changes to the baking value of grains which occur during their postharvest maturation phase were dependent on the cultivar and harvest year: the amount of wet gluten present decreased slightly in all tested cultivars, whereas the quality of the gluten improved. The greatest changes in the gluten index occurred for cv. Bamberka in both harvest years as a result of its low initial value – below 80%. The greatest improvement in alveograph properties was found for wheat cultivars with a lower baking value which was determined just after harvest. A slight increase in the water absorption of the flour was observed, as well as slight increases in bread yield and bread crumb hardness. Grain processors should expect an improvement in the baking value “W” and dough tenacity “P” of grain after its post-maturation phase in comparison with the quality values determined just after harvest.
Źródło:
International Agrophysics; 2021, 35, 2; 179-185
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microbial biodiversity in arable soils is affected by agricultural practices
Autorzy:
Wolińska, Agnieszka
Górniak, Dorota
Zielenkiewicz, Urszula
Goryluk-Salmonowicz, Agata
Kuźniar, Agnieszka
Stępniewska, Zofia
Błaszczyk, Mieczysław
Powiązania:
https://bibliotekanauki.pl/articles/972735.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
dgge
16s rrna gene
simpson diversity
bacterial communities
arable soils
Opis:
The aim of the study was to examine the differences in microbial community structure as a result of agricultural practices. Sixteen samples of cultivated and the same number of non-cultivated soils were selected. Gel bands were identified using the GelCompar software to create the presence-absence matrix, where each band represented a bacterial operational taxonomic unit. The data were used for principal-component analysis and additionally, the Shannon-Weaver index of general diversity, Simpson index of dominance and Simpson index of diversity were calculated. Denaturing gradient gel electrophoresis profiles clearly indicated differentiation of tested samples into two clusters: cultivated and non-cultivated soils. Greater numbers of dominant operational taxonomic units (65) in non-cultivated soils were noted compared to cultivated soils (47 operational taxonomic units). This implies that there was a reduction of dominant bacterial operational taxonomic units by nearly 30% in cultivated soils. Simpson dominance index expressing the number of species weighted by their abundance amounted to 1.22 in cultivated soils, whereas a 3-fold higher value (3.38) was observed in non-cultivated soils. Land-use practices seemed to be a important factors affected on biodiversity, because more than soil type determined the clustering into groups.
Źródło:
International Agrophysics; 2017, 31, 2; 259-271
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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