Investigation of the potential of agro-industrial material as low cost substrate for ethanol production by using Candida tropicalis and Zymomonas mobilis
✍ Scribed by Sonali Patle; Banwari Lal
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 277 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0961-9534
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✦ Synopsis
Ethanol production from agro-industrial waste (thippi) was analyzed as low-cost feedstock using mixed culture fermentation. Reducing sugars yield by acid hydrolysis was 395.2 g kg À1 thippi and ethanol yield was 35.8 g kg À1 thippi. However, reducing sugars in enzyme hydrolysis was 535.33 g kg À1 thippi, which resulted in 254.45 g ethanol yield kg À1 thippi (72.8 g l À1 , using mixed culture), revealed 93.18% of the theoretical yield of ethanol. Zymomonas mobilis alone yielded 228.55 g ethanol kg À1 thippi (65.3 g l À1 ), which is 82.83% of the theoretical yield and Candida tropicalis alone yielded 214.2 g ethanol kg À1 thippi (61.2 g ethanol l À1 ), reaching more than the published value for C. tropicalis with starch. This is 76.58% of the theoretical yield. These data are of 1 l fermentor. Ethanol fermentation from thippi hydrolysate was then scaled up to 10 l fermentor; ethanol yield was 219.63 g kg À1 thippi, which was 78.82% of the theoretical yield.