ISSN:
1573-0832
Keywords:
ragi
;
murcha
;
bubod
;
Chinese yeast
;
chlamydospores
;
microbial counts of amylase starters
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Abstract Ragi and ragi-like starters were obtained from China, India, Indonesia (Java and Bali), Malaysia, Nepal, Philippines, and Taiwan. These starters have a number of names in each country (murcha, bubod, Chinese yeast). The microorganisms found in 41 samples examined were 3 genera of the Mucorales (Rhizopus, Mucor, Amylomyces), yeasts and bacteria. Except for a few chance contaminants only Mucoraceous fungi were found, and the appearance and growth of colonies of yeasts and bacteria indicate that only 2 or 3 species of each were present. The starters from different countries sold under different names are identical in their flora except that Amylomyces was rarely, if ever, a part of the murcha flora in samples from Nepal. The range in counts were 4x103 to 2.1×108 bacteria, 4×103 to 6.1×108 for molds and yeasts, and 3×103 to 6.1×108 for yeasts alone. The anaerobic count ranged from 3×102 to 1.5×108 and was made up of both yeasts and bacteria. Every sample contained yeast and at least one Mucoraceous mold. Amylomyces was shown to survive long periods of time — as many as 5 years at room temperature resulted in retained amylolytic activity. There was a considerable reduction in isolates of Mucor and Rhizopus with long periods of storage. Chlamydospore germination was seen for the first time in Amylomyces.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00437031
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