Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Lactobacillaceae, Genus Lactobacillus, Lactobacillus hulanensis
Zhao and Gu 2019.
Homotypic synonym: Lacticaseibacillus hulanensis (Zhao and Gu 2019) Zheng et al. 2020
Gram-positive rods, 1 x 3.5-6 µm, occurring singly, in pairs or in short chains.
Colonies are smooth, beige, 1 mm in diameter after 2 days of incubation at 30 ºC on
mMRS agar. Can grow at 37 ºC, optimum at 30-32 ºC. ; no growth at at 45 ºC. No
growth in 5% NaCl. Grows at pH 5.0, optimum at pH 6.0-8.0, but not at pH 11.0.
Isolated from suancai, a traditional pickle in China. Tellurite tolerant.
- Zhao W and Gu CT, 2019. Lactobacillus hulanensis sp. nov., isolated from suancai, a traditional Chinese pickle. Int J Syst Evol
Microbiol 69, 2147-2152.
- 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.
Biochemical description is based mostly on API 50 CHL and API ZYM (bioMerieux) results.
Positive results for acid phosphatase, esculin hydrolysis, alpha-glucosidase, naphthol-AS-BI-phosphohydrolase, leucine
arylamidase, valine arylamidase, fermentation of cellobiose, D-fructose, galactose, D-glucose (without gas production), gentibiose, N-
acetylglucosamine, maltose, mannose, and salicin.
Negative results for alkaline phosphatase, arginine deamination, catalase, H2S production, hippurate hydrolysis, nitrate and nitrite
reduction, indole production, oxidase, pyruvate utilisation, urease, Voges-Proskauer test, cystine arylamidase, esterase (C4),
esterase lipase (C8), lipase (C14), trypsin, alpha-chymotrypsin, alpha-galactosidase, beta-glucosidase, alpha-fucosidase, alpha-
mannosidase, beta-galactosidase, beta-glucuronidase,N-acetyl-beta-glucosaminidase, fermentation of: amygdalin, adonitol, arbutin,
D- and L-arabinose, D- and L-arabitol, dulcitol, erythritol, esculin, D- and L-fucose, glycerol, glycogen, gluconate, 2- and 5-
ketogluconate, inositol, inulin, D-lactose, D-lyxose, D-mannitol, melezitose, melibiose, methyl alpha-D-mannopyranoside, raffinose,
rhamnose, ribose, starch, sorbitol, L-sorbose, sucrose, D-tagatose, trehalose, turanose, methyl alpha-D-glucopyranoside, methyl
beta-D-xylopyranoside, xylitol, D- and L-xylose.
(c) Costin Stoica