EVALUATION OF LOCAL GRAPE POMACE AS UNTRADITIONAL FEED AND NATURAL ANTIOXIDANT | ||||
| Journal of Animal and Poultry Production | ||||
| Article 7, Volume 29, Issue 3, March 2004, Page 1169-1181 PDF (221.5 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jappmu.2004.239142 | ||||
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| Authors | ||||
| Amal M.A. Kishk,; S. K. Abdel-Reheem; M. S. Haready; S. A. Hassan | ||||
| Central Lab. for Food & Feed (CLFF),A.R.C, 588 Orman, Giza, Egypt. | ||||
| Abstract | ||||
| The nutrient composition of grape pomace (GP) was studied. The results of proximate analysis indicated a low moisture content,up to 5.2%, crude protein content up to 13.4%. Ash, ether extract, crude fiber and nitrogen free-extract contents were 6.7%.0.48%, 27.4% and 46.82%, respectively. Ca, P, Na, K, Mg, Zn, Fe. Cu and Mn contents were 0.814%,0.177%,0.440%, 1.88%, 1.00%,32.41 ppm, 272.00 ppm, 22.15 ppm and 41.81 ppm, respectively. Amino acids composition showed a recovery (% total N analyzed) up to 65.61 g/16g N, and sulfur containing amino acids up to 1.94 g/16g N . Seventeen amino acids were detected in varing concentration in GP and among ten essential amino acids assayed. Methionine and cystine were the most limiting amino acids with chemical score of 27.3, all compared with chick requirement reference. Essential amino acids index values were 55.86 , all compared with whole egg reference. Gross energy content was reasonablly high, up to 4.089 kcal/g OM. True starch equivalent was 49.16%. HPLC analysis of total polyphenolic compounds in grape pomace which play an important role as natural antioxidants represent about 4.96 mgl g. Some phenolic compounds had been found after hydrolysis in IJg/g as ± catechin 360.42, gallic acid 240.60, chlorogenic and caffeic acid were 45.88, 11.07 respectively, rutin and coumarin were 90.62, 55.27 respetively. Pesticide residues ( Alachlor, Aldicarb, Chlordane and Atrazine) did not find their way in Ion grape pomace. It can be concluded that grape pomace could be introduced as a raw material as untraditional feedstuff for animal and poultry nutrition | ||||
| Keywords | ||||
| Chemical evaluation; grape pomace; amino acids; polyphenols; pesticide residues. nutrition | ||||
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