Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Lactobacillaceae, Genus Lactobacillus, [Group C lactobacilli
(obligately heterofermentative), unique phylogenetic group], Lactobacillus sanfranciscensis corrig. (ex Kline and Sugihara 1971)
Weiss and Schillinger 1984.
Homotypic synonyms: Fructilactobacillus sanfranciscensis (Weiss and Schillinger 1984) Zheng et al. 2020.
Old synonym: Lactobacillus sanfrancisco Kline and Sugihara 1971.
Rods with rounded ends, 0.6-0.8 x 2.0-4.0 µm, occuring singly or in pairs.
On primary isolation some strains do not grow well in MRS broth unless freshly
prepared yeast extract is added and the initial pH is lowered to 5.6. In some cases
strains grew well on MRS5. Can grow at 15 ºC, but not at 45 ºC.
Isolated from sourdough.
- Hammes W.P. and Hertel C., 2009. Genus I. Lactobacillus Beijerinck 1901. In: (Eds.) P.D. Vos, G. Garrity, D. Jones, N.R. Krieg, W.
Ludwig, F.A. Rainey, K.-H. Schleifer, W.B. Whitman. Bergey’s Manual of Systematic Bacteriology, Volume 3: The Firmicutes,
- Hoang VA, Kim YJ, Nguyen NL, Kim SK and Yang DC, 2015. Lactobacillus vespulae sp. nov., isolated from gut of a queen wasp
(Vespula vulgaris). Int J Syst Evol Microbiol 67, 2903-2909.
- 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.
Obligately heterofermentative (hexoses are fermented to lactic acid, acetic acid (ethanol), and CO2 via the phosphogluconate pathway;
pentoses are fermented to lactic acid and acetic acid by the related pentose phosphate pathaway).
Biochemical description is based mostly on API ZYM, API 50 CH, Rapid ID 32A (bioMerieux) results.
Positive results acid phosphatase, cystine arylamidase, esculin hydrolysis, esterase (C4), esterase lipase (C8), lipase (C14), leucine
arylamidase, trypsin, valine arylamidase, fermentation of D- glucose, maltose.
Negative results for arginine dihydrolase, arginine hydrolysis (NH3 from arginine), alpha-chymotrypsin, alpha-fucosidase, alpha- and
beta-galactosidase, alpha- and beta-glucosidase, beta-glucuronidase, N-acetyl-beta-glucosaminidase, indole production,
alpha-manosidase, nitrate reduction, urease, fermentation of: D-adonitol, amygdalin, arabinose, D- and L-arabitol, arbutin, cellobiose,
dulcitol, erythritol, D- and L-fucose, glycerol, methyl alpha-D-glucopyranoside, N-acetylglucosamine, gentibiose, glycogen, gluconate,
5-ketogluconate, inositol, inulin, D-lactose, D-lyxose, mannose, D-mannitol, melezitose, melibiose, methyl alpha-D-mannopyranoside,
raffinose, rhamnose, starch, salicin, sorbitol, L-sorbose, D-tagatose, turanose, trehalose, methyl beta-D-xylopyranoside, xylitol and
Variable results for alkaline phosphatase, fermentation of: galactose, ribose, and sucrose.
(c) Costin Stoica