Homo-fermentative production of d-lactic acid by Lactobacillus sp. employing casein whey permeate as a raw feed-stock |
| |
Authors: | Saurav Prasad Katla Srikanth Anil M Limaye Senthilkumar Sivaprakasam |
| |
Institution: | 1. Department of Biotechnology, Indian Institute of Technology, Guwahati, Guwahati, Assam, 781039, India
|
| |
Abstract: | Casein whey permeate (CWP), a lactose-enriched dairy waste effluent, is a viable feed stock for the production of value-added products. Two lactic acid bacteria were cultivated in a synthetic casein whey permeate medium with or without pH control. Lactobacillus lactis ATCC 4797 produced d-lactic acid (DLA) at 12.5 g l?1 in a bioreactor. The values of Leudking–Piret model parameters suggested that lactate was a growth-associated product. Batch fermentation was also performed employing CWP (35 g lactose l?1) with casein hydrolysate as a nitrogen supplement in a bioreactor. After 40 h, L. lactis produced 24.3 g lactic acid l?1 with an optical purity >98 %. Thus CWP may be regarded as a potential feed-stock for DLA production. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|