d-Lactic acid production from dry biomass of Hydrodictyon reticulatum by simultaneous saccharification and co-fermentation using Lactobacillus coryniformis subsp. torquens
Open Access
- 30 August 2012
- journal article
- research article
- Published by Springer Science and Business Media LLC in Biotechnology Letters
- Vol. 34 (12), 2235-2240
- https://doi.org/10.1007/s10529-012-1023-3
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 CaCO3 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.Keywords
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