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Chemical and biological studies of some food processing wastes as a source of dietary fibre and antioxidants in Egypt And Morocco / Somaia Mahmoud Mohamed Mahmoud ; Supervised Abdelrahman M. Khalaf Allah , Abbas Mohamed Sharaky , Wael Helmy Moussa

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Somaia Mahmoud Mohamed Mahmoud , 2021Description: 126 P. : charts ; 25cmOther title:
  • دراسات كيميائية وبيولوجية لبعض نواتج مخلفات التصنيع الغذائى كمصدر للالياف الغذائية ومضادات الاكسدة فى مصر والمغرب [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (Ph.D.) - Cairo University - Faculty of African Postgraduate Studies - Department of Natural Resources Summary: Agricultural by-products originated from food processing factories represented one of the permanent environmental problems. New trends were raised to utilize these valuable wastes full of nutraceuticals and phytochemicals. Pomegranate and orange peels were used in the current study to assess their beneficial effects. The counts of microorganism were determined and found in the safe permitted level in food. Afterward peels were directed to prepare bakery products. Pomegranate peel contained iron, zinc, calcium, potassium, magnesium, phosphorus and sodium at levels of 12.75, 5.9, 202.7, 135.8, 45.46, 66.38 and 38.91 mg/100g dry matter, respectively. Orange peel valued 19.5, 6.7, 635.8, 785.9, 91.4, 57.55 and 32.34 mg/100g dry matter, respectively. Pomegranate peel contained vitamins B1 and D3 at levels of 0.014 g/Kg and 0.023og/Kg respectively. While, in orange peel were 0.027 g/kg and 0.019 og/Kg, respectively. Pomegranate peel had total, soluble and insoluble dietary fiber contents of 19.9%, 5.8% and 13.9%, respectively. Whereas, orange peel registered 33.8%, 6.5% and 27.4%, respectively. GC/MS analysis of orange peel showed the existence of Dihydrocarvone (30.25%) and 4',6-Dimethoxyisoflavone-7-O-Ý-D-glucopyranoside (20.83%). Phloroglucinol (28.52%), (S)-(-)-Citronellic acid (14.24%) were the bioactive compounds.Biological experiment was conducted for two months using male albino rats to assess the ameliorative effect of peels at concentrations 10%, 20% and 30% in lowering cholesterol level in rats fed high fat diet, addition of 10, 20 and 30% PPP or OPP to high fat diet maintained kidney function in a safe level as negative control. No histopathological changes in liver from rates fed on OPP at level 30%. It could be suggested that dietary supplementation of PPP or OPP might have greater significance in the prevention of hyperlipidemia or cardiovascular disease
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Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.16.03.Ph.D.2021.So.C (Browse shelf(Opens below)) Not for loan 01010110083941000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.16.03.Ph.D.2021.So.C (Browse shelf(Opens below)) 83941.CD Not for loan 01020110083941000

The name of the faculty on the cover of the letter is Faculty of African Studies and the correct name of Faculty of African Postgraduate Studies

Thesis (Ph.D.) - Cairo University - Faculty of African Postgraduate Studies - Department of Natural Resources

Agricultural by-products originated from food processing factories represented one of the permanent environmental problems. New trends were raised to utilize these valuable wastes full of nutraceuticals and phytochemicals. Pomegranate and orange peels were used in the current study to assess their beneficial effects. The counts of microorganism were determined and found in the safe permitted level in food. Afterward peels were directed to prepare bakery products. Pomegranate peel contained iron, zinc, calcium, potassium, magnesium, phosphorus and sodium at levels of 12.75, 5.9, 202.7, 135.8, 45.46, 66.38 and 38.91 mg/100g dry matter, respectively. Orange peel valued 19.5, 6.7, 635.8, 785.9, 91.4, 57.55 and 32.34 mg/100g dry matter, respectively. Pomegranate peel contained vitamins B1 and D3 at levels of 0.014 g/Kg and 0.023og/Kg respectively. While, in orange peel were 0.027 g/kg and 0.019 og/Kg, respectively. Pomegranate peel had total, soluble and insoluble dietary fiber contents of 19.9%, 5.8% and 13.9%, respectively. Whereas, orange peel registered 33.8%, 6.5% and 27.4%, respectively. GC/MS analysis of orange peel showed the existence of Dihydrocarvone (30.25%) and 4',6-Dimethoxyisoflavone-7-O-Ý-D-glucopyranoside (20.83%). Phloroglucinol (28.52%), (S)-(-)-Citronellic acid (14.24%) were the bioactive compounds.Biological experiment was conducted for two months using male albino rats to assess the ameliorative effect of peels at concentrations 10%, 20% and 30% in lowering cholesterol level in rats fed high fat diet, addition of 10, 20 and 30% PPP or OPP to high fat diet maintained kidney function in a safe level as negative control. No histopathological changes in liver from rates fed on OPP at level 30%. It could be suggested that dietary supplementation of PPP or OPP might have greater significance in the prevention of hyperlipidemia or cardiovascular disease

Issued also as CD

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