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Rani, P.
- Ethanol Production from Potato Flour by Saccharomyces cerevisiae
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PDF Views:362
Authors
Affiliations
1 Department of Microbiology, CCS Haryana Agricultural University, Hisar-125004, IN
1 Department of Microbiology, CCS Haryana Agricultural University, Hisar-125004, IN
Source
Indian Journal of Science and Technology, Vol 3, No 7 (2010), Pagination: 733-736Abstract
Flour prepared from potato tubers (Solanum tuberosum) after cooking and drying at 70°C was used for ethanol production. Homogenous slurry of potato flour was prepared in water at solid liquid ratio 1:4. Liquefaction of potato flour slurry with α-amylase (2.05 DUN U/g starch) at 80°C for 30 min followed by saccharification with glucoamylase (20.5 GA U/g starch) at 60°C for 2 h generated 15.2% total reducing sugars in the hydrolysate. Fermentation of hydrolysate with Saccharomyces cerevisiae HAU-1 at 30°C for 48 h resulted in production of 56.8 gl-1 ethanol. Supplementation of nitrogen sources to potato flour did not contribute significantly to ethanol yield. Simultaneous saccharification and fermentation of hydrolysate was as effective as separate hydrolysis and fermentation.Keywords
Ethanol, Fermentation, Liquefaction, Potato Flour, Saccharification, S. cerevisiaeFull Text
References
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- Ecological Status of River Daha in North Bihar and its Effects on Fish Diversity
Abstract Views :119 |
PDF Views:0
Authors
Affiliations
1 Department of Zoology, D.A.V. P.G. College, Siwan-841 226, Bihar, IN
1 Department of Zoology, D.A.V. P.G. College, Siwan-841 226, Bihar, IN
Source
Nature Environment and Pollution Technology, Vol 10, No 2 (2011), Pagination: 293-295Abstract
The paper deals with the ecological studies of River Daha in north Bihar in relation to its physico-chemical charactersitics and the fish fauna. The fish fauna is greatly affected by the characteristics of water and level of pollution. The reiver is periodically gets much polluted due to discharge of sugar factories wastes and distilley effluents as reflected by low dissolved oxygen, high BOD and COD values and low pH. In all, 32 species of fish belonging to 7 Orders, 15 Families and 19 Genera were reported from the river. Many of these species come in the category of hardy fishes reflecting their tolerance to polluted conditions.Keywords
River Daha, Fish Diversity, Ecological Status.Full Text
- Ecological Investigations of Daha River of Siwan, Bihar
Abstract Views :114 |
PDF Views:3
Authors
Reeta Kumari
1,
P. Rani
2
Affiliations
1 Department of Zoology, D.A.V. College, Siwan-841 226, Bihar, IN
2 Department of Zoology, Patna Science College, Patna-800 005, Bihar, IN
1 Department of Zoology, D.A.V. College, Siwan-841 226, Bihar, IN
2 Department of Zoology, Patna Science College, Patna-800 005, Bihar, IN
Source
Nature Environment and Pollution Technology, Vol 7, No 2 (2008), Pagination: 373-376Abstract
Physico-chemical parameters of Daha river in Siwan were measured at monthly interval from November 2005 to Octeber 2007. This river gains some nutrients from domestic wastewaters and from animal wastes. The various parameters like temperature, pH, turbidity, total solids, DO, BOD, COD, chloride, sulphate, etc. were studied. The water was slightly alkaline. Significant seasonal variations were observed throughout the study period. The overall level of various parameters suggests that the river not much polluted.Full Text