Influence of technological process during buckwheat groats production on dietary fibre content and sorption of bile acids
2012
Dziedzic, Krzysztof | Górecka, Danuta | Kucharska, Monika | Przybylska, Barbara
This study examined the influence of the technological process of buckwheat groats production on dietary fibre content and its fraction, and sorption of selected bile acids by buckwheat groats and products. Analyses were conducted on samples of the following products: buckwheat grains (BG), buckwheat grains after roasting (BGR), buckwheat hull (BH), buckwheat bran (BB), whole buckwheat groats (WBG), broken buckwheat groats (BBG) and buckwheat waste (BW). The content of neutral detergent dietary fibre (NDF) and its fraction containing cellulose (C), hemicellulose (H) and lignin (L) were assayed using the Van Soest method, while total dietary fibre (TDF) and its soluble (SDF) and insoluble (IDF) fractions were assayed using the Asp method. Ability to absorb cholic acid (CA), deoxycholic acid (DCA) and dehydrocholic acid (DHA) was investigated by colorimetric methods. Differences in the content of dietary fibre and its fraction in examined products were observed. The highest TDF content appeared in BH, while the lowest in BBG. The buckwheat hull contained highest amount of fraction L and C, while the buckwheat waste contained more fraction L. The IDF fraction predominated in all products. Among investigated bile acids DCA was adsorbed the strongest, while CA the weakest. Cholic acid binding was significantly higher with BH, BB and BW than with rest products. For buckwheat hull bile acid binding was significantly higher in comparison with WBG and BBG.
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