Utilization of Potato-Chips Waste for Production of High Economic Value Products: II- Production of Citric Acid by Solid-State Fermentation | ||||
| Alexandria Journal of Food Science and Technology | ||||
| Article 3, Volume 4, Issue 2, December 2007, Page 19-26 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ajfs.2007.19636 | ||||
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| Abstract | ||||
| 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. Maximum amount of citric acid (23.19g/100g) 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 ammonium nitrate and 4% v/w of methanol was added | ||||
| Keywords | ||||
| potato-chips waste; Citric acid; solid-state fermentation | ||||
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