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[A solid culture medium, inducing intensive production of conidia in moulds of the species Aspergillus niger (author's transl)]. 1978

H Leopold, and J Ulŭ

Two citric acid-producing strains of the mould Aspergillus niger, cultivated on different sporulation media recommended and well-tried for Aspergilli, showed only poor formation of conidia the harvesting of which was difficult. Starting with a sporulation medium of MOYER et al. and substituting some of the constituents and determining their optimum concentrations, two semi-synthetic media were developed, containing glycerol and/or citric acid. On these sporulation media the two strains exhibited excellent growth and formation of a dense and regular carpet of conidia which could be easily harvested. Attention was payed to the significance of the cultivation temperature. The original biochemical properties of the two strains were not altered.

UI MeSH Term Description Entries
D002951 Citrates Derivatives of CITRIC ACID.
D003470 Culture Media Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN. Media, Culture
D005990 Glycerol A trihydroxy sugar alcohol that is an intermediate in carbohydrate and lipid metabolism. It is used as a solvent, emollient, pharmaceutical agent, or sweetening agent. 1,2,3-Propanetriol,Glycerin,1,2,3-Trihydroxypropane,Glycerine
D001234 Aspergillus niger An imperfect fungus causing smut or black mold of several fruits and vegetables such as grapes, apricots, onions, and peanuts, and is a common contaminant of food. Aspergillus lacticoffeatus
D012965 Sodium Chloride A ubiquitous sodium salt that is commonly used to season food. Sodium Chloride, (22)Na,Sodium Chloride, (24)NaCl
D013172 Spores, Fungal Reproductive bodies produced by fungi. Conidia,Fungal Spores,Conidium,Fungal Spore,Spore, Fungal
D013696 Temperature The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms. Temperatures

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