title: D-lactic acid production from dry biomass of Hydrodictyon reticulatum by simultaneous saccharification and co-fermentation using Lactobacillus coryniformis subsp. torquens.
abstract: D-lactic acid production from dry biomass of the microalga, Hydrodictyon reticulatum, was carried out in a 5-l jar fermentor (initial pH 6, 34 °C using CaCO(3) as a neutralizing agent) through simultaneous saccharification and co-fermentation using the Lactobacillus coryniformis subsp. torquens. After 36 h, 36.6 g lactic acid/l was produced from 80 g H. reticulatum/l in the medium containing 3 g yeast extract/l and 3 g peptone/l in the absence of mineral salts. The maximum productivity, average productivity and yield were 2.38 g/l h, 1.02 g/l h and 45.8 %, respectively. The optical purity of D-Lactic acid ranged from 95.8-99.6 %. H. reticulatum is thus a promising biomass material for the production of D-Lactic acid.
authors.affiliation: University of Science and Technology, Research Center for Biobased Chemistry, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea. nmcuong_vienhoa@yahoo.com
authors.forename: Cuong Mai
authors.initials: CM
authors.lastname: Nguyen
authors.forename: Jin-Seog
authors.initials: JS
authors.lastname: Kim
authors.forename: Jae Kwang
authors.initials: JK
authors.lastname: Song
authors.forename: Gyung Ja
authors.initials: GJ
authors.lastname: Choi
authors.forename: Yong Ho
authors.initials: YH
authors.lastname: Choi
authors.forename: Kyoung Soo
authors.initials: KS
authors.lastname: Jang
authors.forename: Jin-Cheol
authors.initials: JC
authors.lastname: Kim
mesh_terms: D018533:Biomass; D019149:Bioreactors / Q000382:microbiology; D002119:Calcium Carbonate / Q000378:metabolism; D000460:Chlorophyta / Q000737:chemistry*; D005285:Fermentation; D006863:Hydrogen-Ion Concentration; D019344:Lactic Acid / Q000378:metabolism*; D007778:Lactobacillus / Q000254:growth & development / Q000378:metabolism*; D013696:Temperature
chemical_list: D019344:Lactic Acid; D002119:Calcium Carbonate