|Bifidobacterium longum subsp. suillum
Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,
Bifidobacterium longum subsp. suillum Yanokura, Oki, Makino, Modesto, Pot, Mattarelli, Biavati, Watanabe 2015.
Gram-positive rods of various shapes, 0.4-0.7 x 1.5-3 µm, sometimes curved, swollen
and branched. Non-motile. Non-spore-forming.
Colonies are convex, smooth, opaque, white, with entire margins, 2-3 mm in diameter.
Fluid cultures are turbid, clearing after 1-2 days, with dispersible sediment.
Anaerobic. Optimum growth temperature is 25-37 ºC. No growth at 45 or 46.5 ºC,
variable growth at 20 ºC. Grows at pH 5.3-9.4 (optimum pH 7-8); variable at pH 9.5.
Isolated from faeces of piglets.
Non-pathogenic for man or animals.
- Yanokura E, Oki K, Makino H, Modesto M, Pot B, Mattarelli P, Biavati B, Watanabe K, 2015. Subspeciation of Bifidobacterium longum
by multilocus approaches and amplified fragment length polymorphism: description of B. longum subsp. suillum subsp. nov.,
isolated from the faeces of piglets. Syst Appl Microbiol 38, 305-314.
Positive results for esculin hydrolysis, acid production from L-arabinose, D-fructose, D-galactose, D-glucose, methyl alpha-D-
glucopyranoside, D-lactose, maltose, melibiose, raffinose, D-ribose, sucrose, turanose, and D-xylose.
Negative results for catalase, oxidase, urease, acid production from D-arabinose, amygdalin, adonitol,D- or L-arabitol, arbutin,
cellobiose, dextran, dulcitol, esculin, erythritol, L-fucose, D-fucose, glycerol, gluconate, 2- or 5-ketogluconate, D-glucuronate, glycogen,
inositol, inulin, D-lyxose, D-mannitol, melezitose, alpha-methyl-D-mannoside, methyl alpha-D-mannopyranoside, N-acethyl
glucosamine, pectin, porcine gastric mucin, rhamnose, salicin, D-sorbitol, L-sorbose, starch, D-tagatose, trehalose, L-xylose, xylan,
xylitol, methyl beta-D-xylopyranoside.
Variable results for acid production from amylopectin, amylose, D-galactosamine, gentibiose, D-glucosamine, and D-mannose.
(c) Costin Stoica