Chemical Composition, Fatty Acids Profile and Biological Evaluation of Tannins of Selected Date Seeds Grown in Iran
الموضوعات :آ. رضایینیا 1 , ع.ع. ناصریان 2 , ا. مختارپور 3
1 - Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
2 - Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
3 - Research Center of Special Domestic Animals, Research Institute at University of Zabol, Zabol, Iran
الکلمات المفتاحية: gas production, Fatty Acids, date seed, phenolics,
ملخص المقالة :
This study was conducted to evaluate the chemical composition and fatty acids profile of six predominant date seed cultivars grown in Iran including Barhi, Estamaran, Mazafati, Khasi, Kharak and Zahedi and the biological effects of their tannins based on in vitro gas production. Organic matter digestibility (OMD), metabolizable energy (ME) and concentration of short chain fatty acids (SCFA) were estimated after 24 h of incubation without or with inclusion of polyethylene glycol (PEG). Results showed that date seeds of all cultivars contained high amount of neutral detergent fiber (NDF), ether extract (EE) and total phenolics (TP), which ranged from 689 to 782, 82 to 118 and 41 to 110 g/kg DM, respectively. However, they had low levels of crude protein (CP) (50 to 69 g/kg DM) and ash (10 to 26 g/kg DM). Gas chromatography revealed that the major unsaturated fatty acid was oleic acid (40.13 to 46.35 g/100 g fatty acids), while the main saturated fatty acid was lauric acid (20.96 to 26.25 g/100 g fatty acids). Except for Estamaran, all cultivars had low OMD (
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