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Lactic acid Production from Hydrolysate of Pretreated Cellulosic Biomass by Lactobacillus rhamnosus
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 Title & Authors
Lactic acid Production from Hydrolysate of Pretreated Cellulosic Biomass by Lactobacillus rhamnosus
Ahn, Su Jin; Cayetano, Roent Dune; Kim, Tae Hyun; Kim, Jun Seok;
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 Abstract
Lactic acid, the most widely occurring hydroxy-carboxylic acid, has traditionally been used as food, cosmetic, pharmaceutical, and chemical industries. Even though it has tremendous potential for large scale production and use in a wide variety of applications, high cost lactic acid materials are primarily problems. Lactic acid can be obtained on either by fermentation or chemical synthesis. In recent years, the fermentation approach has become more successful because of the increasing market demand for naturally produced lactic acid. Generally, lactic acid was produced from pure starch or from glucose. As an alternative, biomass which is the most abundant renewable resources on earth have been considered for conversion to readily utilizable hydrolysate. In this study, we conducted the fermentation method to produce L(+)-lactic acid production from pretreated hydrolysate was investigated by Lactobacillus rhamnosus ATCC 10863. The hydrolysate was obtained from pretreatment process of biomass using Ammonia percolation process (AP) followed by enzymatic hydrolysis. In order to effectively enhance lactic acid conversion and product yield, controlled medium, temperature, glucose concentration was conducted under pure glucose conditions. The optimum conditions of lactic acid production was investigated and compared with those of hydrolysate.
 Keywords
Lactic Acid;Lactobacillus rhamnosus;Cellulosic Biomass;Pretreatment;
 Language
Korean
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