کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
683011 | 888993 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure, nutrient composition and antioxidant capacity of king palm flour: A new potential source of dietary fibre
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Microstructure, nutrient composition and antioxidant capacity of king palm flour: A new potential source of dietary fibre Microstructure, nutrient composition and antioxidant capacity of king palm flour: A new potential source of dietary fibre](/preview/png/683011.png)
چکیده انگلیسی
The objective of this research was to evaluate the chemical composition, microstructure, and antioxidant capacity of king palm flour obtained from residues from organic king palm (Archontophoenix alexandrae) processing. King palm flour exhibited high levels of dietary fibre (70.85%) and total ash (3.27%); low contents of protein (3.51%) and lipid (0.91%). Iron, magnesium, calcium and potassium contents were 7.31, 517.03, 801.33 and 1041.95Â mg/100Â g, respectively. The high concentration of glucose, xylose and arabinose suggests the presence of some polysaccharides, such as cellulose and hemicelluloses (xyloglucans and arabinoxylans). Methanol and aqueous extracts of king palm flour showed 1.27 and 0.95Â mg/g (Gallic Acid Equivalents) of total polyphenols, respectively. Methanol extract yielded the best antioxidant activity in the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2â²-azino-di(3-ethylbenzthiazoline sulphonate) (ABTS+) methods. The micrographs of leaf sheath showed the presence of druses, which are characterized as calcium oxalate deposition, contributing to the calcium content in king palm flour. The presence of primary and secondary cell walls lignified in leaf sheath contributed to high levels of dietary fibre detected in king palm flour.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 101, Issue 14, July 2010, Pages 5701-5707
Journal: Bioresource Technology - Volume 101, Issue 14, July 2010, Pages 5701-5707
نویسندگان
Karina N. de Simas, Leila do N. Vieira, Rossana Podestá, Manoela A. Vieira, Ismael I. Rockenbach, Carmen L.O. Petkowicz, João de Deus Medeiros, AlÃcia de Francisco, Edna R. Amante, Renata D.M.C. Amboni,