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Utilization of potato-chips waste for production of high economic value products: II- production of citric acid by solid-state [electronic resource].

By:

EL-Sanat, S

Contributor(s):

Korish, M

Language: English Summary language: Arabic Description: p.19-26Other title:

الاستفادة من مخلفات صناعة شرائح البطاطس في إنتاج منتجات ذات قيمة إقتصادية عالية: 2- إنتاج حامض الستريك [Added title page title]

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Alexandria journal of food science and technology, 2007 v.4 (2) [electronic resource].

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In: Alexandria Journal of Food Science and technology 2007.v.4(2)Summary: The present study was proposed to evaluate the potential use of potato- chips waste as a substrate for citric acid production by solid-state fermentation. Potato- chips waste could serve as a substrate for citric acid production. Maxi¬mum amount of citric acid (23.19g/ 100 g) was produced by Aspergillus niger when it was cultivated on the optimized waste medium for 7 days at 30°C. The waste was prepared as follows: it was milled to 1.0-1.5mm, cooked at 121°C for 2hr,adjusted to moisture level of 65% v/w, with pH 3.5 and enriched with 0.0125% w/w nitrogen in form of am¬monium nitrate and 4% v/w of methanol was added.

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The present study was proposed to evaluate the potential use of potato- chips waste as a substrate for citric acid production by solid-state fermentation. Potato- chips waste could serve as a substrate for citric acid production. Maxi¬mum amount of citric acid (23.19g/ 100 g) was produced by Aspergillus niger when it was cultivated on the optimized waste medium for 7 days at 30°C. The waste was prepared as follows: it was milled to 1.0-1.5mm, cooked at 121°C for 2hr,adjusted to moisture level of 65% v/w, with pH 3.5 and enriched with 0.0125% w/w nitrogen in form of am¬monium nitrate and 4% v/w of methanol was added.

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