title: Efficient Production of Lactic Acid from Sweet Sorghum Juice by a Newly Isolated Lactobacillus salivarius CGMCC 7.75.
abstract: Sweet sorghum juice was a cheap and renewable resource, and also a potential carbon source for the fermentation production of lactic acid (LA) by a lactic acid bacterium. One newly isolated strain Lactobacillus salivarius CGMCC 7.75 showed the ability to produce the highest yield and optical purity of LA from sweet sorghum juice. Studies of feeding different concentrations of sweet sorghum juice and nitrogen source suggested the optimal concentrations of fermentation were 325 ml l(-1) and 20 g l(-1), respectively. This combination produced 142.49 g l(-1) LA with a productivity level of 0.90 g of LA per gram of sugars consumed. The results indicated the high LA concentration achieved using L. salivarius CGMCC 7.75 not only gives cheap industrial product, but also broaden the application of sweet sorghum.
authors.affiliation: Department of Bioengineering and Biotechnology, College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao, 266042 China.
authors.forename: Quanlan
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Department of Bioengineering and Biotechnology, College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao, 266042 China.
authors.forename: Shanglong
authors.initials: S
authors.lastname: Wang
authors.affiliation: Institute of Resource and Environment, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050051 China.
authors.forename: Jian-Fei
authors.initials: JF
authors.lastname: Zhi
authors.affiliation: Department of Bioengineering and Biotechnology, College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao, 266042 China.
authors.forename: Henglei
authors.initials: H
authors.lastname: Ming
authors.affiliation: Department of Bioengineering and Biotechnology, College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao, 266042 China.
authors.forename: Dawei
authors.initials: D
authors.lastname: Teng
keywords: Lactic acid production; Lactobacillus salivarius; Mixed sugars; Sweet sorghum juice