title: Direct lactic acid fermentation of Jerusalem artichoke tuber extract using Lactobacillus paracasei without acidic or enzymatic inulin hydrolysis.
abstract: Lactic acid fermentation of Jerusalem artichoke tuber was performed with strains of Lactobacillus paracasei without acidic or enzymatic inulin hydrolysis prior to fermentation. Some strains of L. paracasei, notably KCTC13090 and KCTC13169, could ferment hot-water extract of Jerusalem artichoke tuber more efficiently compared with other Lactobacillus spp. such as L. casei type strain KCTC3109. The L. paracasei strains could utilize almost completely the fructo-oligosaccharides present in Jerusalem artichoke. Inulin-fermenting L. paracasei strains produced c.a. six times more lactic acid compared with L. casei KCTC3109. Direct lactic fermentation of Jerusalem artichoke tuber extract at 111.6g/L of sugar content with a supplement of 5 g/L of yeast extract by L. paracasei KCTC13169 in a 5L jar fermentor produced 92.5 ce:hsp sp="0.25"/>g/L of lactic acid with 16.8 g/L fructose equivalent remained unutilized in 72 h. The conversion efficiency of inulin-type sugars to lactic acid was 98% of the theoretical yield.
authors.affiliation: Industrial Biotechnology Research Center, KRIBB, Daejeon, Republic of Korea.
authors.forename: Hwa-Young
authors.initials: HY
authors.lastname: Choi
authors.forename: Hee-Kyoung
authors.initials: HK
authors.lastname: Ryu
authors.forename: Kyung-Min
authors.initials: KM
authors.lastname: Park
authors.forename: Eun Gyo
authors.initials: EG
authors.lastname: Lee
authors.forename: Hongweon
authors.initials: H
authors.lastname: Lee
authors.forename: Seon-Won
authors.initials: SW
authors.lastname: Kim
authors.forename: Eui-Sung
authors.initials: ES
authors.lastname: Choi
mesh_terms: D000143:Acids / Q000737:chemistry; D005285:Fermentation; D006368:Helianthus / Q000382:microbiology*; D006868:Hydrolysis; D007444:Inulin / Q000737:chemistry; D019344:Lactic Acid / Q000096:biosynthesis* / Q000737:chemistry; D007778:Lactobacillus / Q000145:classification* / Q000378:metabolism*; D010936:Plant Extracts / Q000378:metabolism*; D035281:Plant Tubers / Q000382:microbiology*; D013045:Species Specificity
chemical_list: D000143:Acids; D010936:Plant Extracts; D019344:Lactic Acid; D007444:Inulin