Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,
Bifidobacterium aemilianum Alberoni, Gaggia, Baffoni, Modesto, Biavati, Di Gioia 2019 .
Gram-positive cells. Non-spore-forming.
Colonies are white, 0.2-0.5 mm in diameter on MRS agar supplemented with cysteine
and fructose. Alpha-hemolytic activity. Grows at temperature 20-40 ºC (optimum 35 ºC),
pH 5.0-9.0 (optimum pH 6.5). Microaerophilic.
Isolated from isolated from gut samples of carpenter bees (Xylocopa violacea), Italy.
Commensal with alpha-haemolytic activity.
- Alberoni D, Gaggia F, Baffoni L, Modesto MM, Biavati B, Di Gioia D, 2019. Bifidobacterium xylocopae sp. nov. and Bifidobacterium
aemilianum sp. nov., from the carpenter bee (Xylocopa violacea) digestive tract. Syst Appl Microbiol 42, 205-216.
Description is based mostly on API 50 CHL, API Rapid ID 32A results.
Positive results for arginine arylamidase, alpha- and beta-glucosidase, histidine arylamidase, leucine arylamidase,
N-acetyl-beta-glucosaminidase, phenylalanine arylamidase, proline arylamidase, tyrosine arylamidase, acid production from
L-arabinose (weakly), arbutin, esculin, D-fructose, D-glucose, D-mannose, melibiose (weakly), raffinose, D-ribose, salicin, sucrose,
Negative results for alkaline phosphatase, arginine dihydrolase, catalase, alpha-fucosidase, alpha-galactosidase, beta-glucuronidase,
indole production, oxidase, acid production from D-adonitol, D- and L-arabitol, amygdalin, cellobiose, dulcitol, erythritol, D- and
L-fucose, D-galactose, glycogen, gluconate, glycerol, gentiobiose, 2-ketogluconate, inositol, D-lactose, D-lyxose, maltose, D-mannitol,
melezitose, methyl alpha-D-mannopyranoside, N-acetylglucosamine, rhamnose, D-sorbitol, L-sorbose, tagatose, trehalose, methyl
beta-D-xylopyranoside, and xylitol.
Variable results for alanine arylamidase, beta-galactosidase, acid production from inulin, starch, methyl alpha-D-glucopyranoside,
turanose, and 5-ketogluconate.
(c) Costin Stoica