Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Streptococcaceae, Genus Streptococcus, Streptococcus rifensis Kadri
et al. 2014.
Description is based on a single isolate.
Gram-positive cocci, forming small groups. Non-spore-forming.
Colonies on brain heart infusion agar supplemented with 5% horse blood are about
0.5-0.8 mm in diameter, yellow-golden, round with raised margin, smooth, convex
and non-haemolytic at 37 ºC. Grows well under aerobic and anaerobic conditions at
25, 30 or 37 ºC, but not at 10 or 45 ºC.
Isolated from raw camel milk in the north of Morocco.
- Zaina Kadri, Mohamed Amar, Mouna Ouadghiri, Margo Cnockaert, Maarten Aerts, Omar El Farricha, Peter Vandamme.
Streptococcus moroccensis sp. nov. and Streptococcus rifensis sp. nov., isolated from raw camel milk. Int J Syst Evol Microbiol,
July 2014 64: 2480-2485.
Most tests were performed using API 50 CHL and API 20 Strep kits.
Positive results for leucine aminopeptidase, beta-glucuronidase, aesculin hydrolysis, acid production from: L-arabinose, arbutin,
amygdalin, cellobiose, fructose, galactose, gentiobiose, glucose, N-acetylglucosamine, inulin, lactose, melezitose, D-mannitol,
maltose, salicin, sorbitol, sucrose & trehalose.
Negative for arginine dihydrolase, alkaline phosphatase, catalase, hippuricase, pyrrolidonyl arylamidase, alpha- and
beta-galactosidase, oxidase, Voges-Proskauer reaction, acid production from: adonitol, D-arabinose, DL-arabitol, dulcitol, erythritol,
DL-fucose, glycerol, glycogen, gluconate, 2- and 5-ketogluconate, methyl alpha-D-glucoside, inositol, D-lyxose, D-mannose,
melibiose, methyl alpha-D-mannoside, raffinose, D-ribose, L-rhamnose, sorbose, starch, turanose, D-tagatose, xylitol, D- and
L-xylose, methyl beta-D-xyloside.
(c) Costin Stoica