EVALUAYION OF SOME FOOD PROCESSING WASTES AS SOURCES OF DIETARY FIBERS | ||||
| Journal of Food and Dairy Sciences | ||||
| Article 3, Volume 31, Issue 10, October 2006, Page 6505-6515 PDF (143.23 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jfds.2006.236863 | ||||
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| Authors | ||||
| A. A. EI-Refal,1; Amal M. El-Bastawesy2; M. M. Zakaria2 | ||||
| 1Food Industries Dept.ll Fac. of Agric... Mansoura Univ... Egypt. | ||||
| 2Food Technology Research Institute, Agric. Res. Center , Giza | ||||
| Abstract | ||||
| This work was a trial to utilize the most important wastes remaining alter the processing of grape , mango . peach and tomato fruits as source of dietary fibers .The obtained results reveal that all tested peel had high values of water and fat absorption and no foaming stability values as well as fruits peel had adequate amounts of minerals and are considered as sufficient sources of minerals for human nutrition. Grape peel had noticeable amounts of calcium and iron ( 1517.72 and 87.27 mg i 100 gm . respectively) while. tomato and peach peel had the highest contents of zinc (157.37 and 67.33 mg l 100 gm . respectively). Tomato and mango peel had the highest contents of total carotenoids (4392.74 and 3852.01 mg/100 gm, respectively) compared with those of the peach and grape . Peach and mango peel residues had the highest amounts of total dietary fibers (TDF) ( 76.320 and 62.687% .respectively) Peach peel had the highest content of pectin ( soluble dietary fibers ) ( 39.712 %) , which recorded more three folds ( 12.147 94. ) than mango peel pectin content . This means that peach peel can be used as a new commercial source for production of pectin compared with citrus peel and apple pomace. Moreover. total dietary fibers of all tested fruits peel ranged from 55.886 to 78.06 9’: on dry weight basis . This leads to the possibility to convert some waste materials such as grape . mango. peach and tomato peel to beneficial materials with high nutritional and functional properties. Also, this will improve the environmental ecology of industry by recycling its by—products and decrease the problems of pollution from the industrial wastes . Utilization of these wastes will be solve one of the environmental pollution problems in food industries. Finally . it could be concluded that the four sources used in this study are considered as rich sources of dietary fibers . | ||||
| Keywords | ||||
| Food processing wastes; Dietary fibers; Grape pomace . Mango peel; Peach peel . Tomato peel | ||||
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