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2011 | 10 | 2 |
Tytuł artykułu

Chemical composition and nutritional characteristics of several cereal grain

Treść / Zawartość
Warianty tytułu
Skład chemiczny oraz wartość odżywcza wybranych ziaren zbóż
Języki publikacji
An analysis chemical composition of 33 samples of five cereal grains harvested in oneyear led to a conclusion that the greatest variations and statistically significant differences (P≤0.01) among cereals existed in their content of crude protein, crude fibre and the following fractions of dietary fibre: NDF,ADF, TDF, IDF and SDF.Analyzed winter wheat and winter rye varieties differ significantly (P≤0.01) from other cereal grains in their content of magnesium, potassium, sodium, phosphorus, manganese, zinc and show a statistically significant difference (P≤0.05) in the content of calcium and copper. The average total content of amino acids was highest in wheat and lowest in winter barley. Lysine was found to be the first amino acid limiting (CS) the quality of protein in all analyzed varieties of cereal grains, with the exception of rye, while tryptophan was found to be such an amino acid for animals (WE). The high content of essential amino acids (EAA) was reflected in EAAI, which forWH ranged from 71% (spring barley) to 84% (winter triticale), and forWE from 51% (winter barley) to 60% (winter triticale).
Analiza składu chemicznego próbek z pięciu odmian zbóż (33 próby) zebranych w jednym roku doprowadziła do wniosku, że największe zmiany i statystycznie istotne różnice (P≤0,01) wśród zbóż istniały w ich zawartości białka, włókna surowego oraz następujących frakcji węglowodanowych: NDF, ADF, TDF, IDF i SDF. Analizowane ziarna pszenicy ozimej i żyta ozimego różnią się istotnie (P≤0,01) od innych ziaren zbóż w ich zawartości magnezu, potasu, sodu, fosforu, manganu, cynku i wykazano różnicę istotną statystycznie (P≤0,05) w zawartości wapnia i miedzi. Średnia całkowita zawartość aminokwasów była najwyższa w pszenicy, a najniższa w ziarnie jęczmienia ozimego. Lizyny to pierwszy aminokwas ograniczający (CS) jakość białka we wszystkich badanych odmianach zbóż, z wyjątkiem żyta, gdzie to tryptofan okazał się aminokwasem ograniczającym wartość odżywczą dla zwierząt (WE). Wysoka zawartość aminokwasów egzogennych (EAA) znalazło odzwierciedlenie w indeksie EAAI, który dla WH wahała się od 71% (jęczmień jary) do 84% (pszenżyto ozime) oraz WE z 51% (jęczmień ozimy) do 60% (pszenżyto ozime).
Opis fizyczny
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