Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Lactobacillaceae, Genus Lactobacillus, Lactobacillus koreensis Bui,
Kim, In and Yang 2011.
Homotypic synonym: Levilactobacillus koreensis (Bui et al. 2011) Zheng et al. 2020.
Species description is based on a single isolate.
Gram-positive, curved rods, 1.4-2.0 x 3.0-5.0 µm. Motile. Non-spore-forming.
Colonies on MRS agar are beige, convex, smooth , smaller than 1 mm in diameter
after 1 day. Facultatively anaerobic. Can grow at 10 and 37 ºC, but not at 45 ºC.
Optimum pH 4.5-6.5. Can grow at pH 10; no growth at pH 4.0. Can grow in 1% and
7% NaCl, no growth in 8% NaCl.
Isolated from the traditional Korean food kimchi.
- Bui T.P.N., Kim Y.J., In J.G. and Yang D.C., 2011. Lactobacillus koreensis sp. nov., isolated from the traditional Korean food
kimchi. IJSEM 61, 772-776.
- Lin ST, Wang LT, Wang HM, Tamura T, Mori K, Huang L and Watanabe K, 2020. Lactobacillus suantsaicola sp. nov. and
Lactobacillus suantsaiihabitans sp. nov., isolated from suan-tsai, a traditional fermented mustard green product of Taiwan. Int J
Syst Evol Microbiol 70, 2972-2980.
- Zheng J, Wittouck S, Salvetti E, Franz MAP et al., 2020. A taxonomic note on the genus Lactobacillus: Description of 23 novel
genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae.
Int J Syst Microbiol. 70, 2782-2858.
Heterofermentative. Lactic acid and acetic acid but not ethanol are detected as metabolic end products from glucose.
Positive results for acid phosphatase, esterase (C4), esterase lipase (C8), esculin hydrolysis, alpha- and beta-galactosidase, alpha-
abd beta-glucosidase, leucine arylamidase, valine arylamidase, fermentation of: L-arabinose (weak), esculin, galactose, glucose
(acid and gas), gluconate (acid and gas), melibiose, ribose (weak), and D-xylose.
Negative results for alkaline phosphatase, arginine hydrolysis (NH3 from arginine), catalase, citrate utilization, cystine arylamidase,
alpha-fucosidase, gelatin hydrolysis, beta-glucuronidase, N-acetyl-beta-glucosaminidase, H2S production, indole production, lipase
(C14), lysine decarboxilase, alpha-mannosidase, naphthol-AS-BI-phosphohydrolase, ornithine decarboxilase, tryptophane
deaminase, trypsin, alpha-chymotrypsin, urease, Voges-Proskauer test, fermentation of: methyl alpha-D-glucopyranoside, methyl
alpha-D-mannopyranoside, methyl beta-D-xylopyranoside, arbutin, adonitol, D-arabinose, L-arabitol, cellobiose, dulcitol,erythritol, D-
and L -fucose, glycerol, glycogen, gentibiose, inositol, inulin, 2- and 5-ketogluconate, D-lyxose, lactose, maltose, mannitol, D-
mannose, raffinose, L-sorbose, starch, D-tagatose, trehalose, turanose, xylitol, and L-xylose.
Variable results for the fermentation of D-arabitol, fructose and N-acetylglucosamine.
(c) Costin Stoica