Aspergillus niger quantitative strain|BNCC353785 |BNCC

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Quantitative strains of aspergillus niger

Culture medium	Peptone: 5.0, yeast extract: 2.0, glucose: 20.0, dipotassium hydrogen phosphate: 1.0, magnesium sulfate: 0.5, agar: 14.0g,pH:6.4±0.2(25 ℃)
Subculture procedure	elute and collect spores
Growth conditions	25-28 ℃, strictly aerobic
Growth characteristics	The colony is white and filamentous, producing a large number of black spores, with yellowish brown on the reverse side. The colony surface is flat, with radial grooves, velvet texture and a small amount of colorless exudate. Conidia head spherical, 50-80μm in diameter; The diameter of the spore stem is 10-15μm, and the wall is smooth. The apical capsule is spherical, with a diameter of 30-40μm, and the surface is fully fertile. The spore-producing structure is double-layered, with a stem base of 10-12 × 2-3μm; Bottle stem 6-8 × 2-3μm; Conidia spherical, with a diameter of 3-4μm and rough wall.
Storage conditions	-20 ℃
Safety level	1
morphology	Spreading growth, producing black spores, irregular edges, opaque, dark color, rough surface, dry texture
application	research; analysis and detection. 2015 edition of Chinese Pharmacopoeia quality control strains, GB 4789.15-2010 mold and yeast count positive control strains. Spore-producing.
Sharing mode	Public welfare sharing