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Alpha -amylase is one of the most important and widely used
enzymes, in food and beverage industries. The alpha-amylase
presently used in starch saccharification requires calcium for
activity and/or stability. The thermostable alpha- amylase produced
by the actinomycetes strain Streptomyces erumpens is calcium
independent.In this book, the process optimizations and production
of alpha -amylase by this strain in solid state- and submerged-
fermentation, and its applications in starch saccharification to
sugar, for conversion in to lactic acid and ethanol have been
discussed.
In Asian agriculture, cowdung is commonly used as organic manure to
increase the crop productivity. This study provides scientific
evidences to reinforce the concept on agricultural promotional
activity of cowdung which is by and large associated with
microorganisms present in it. Five Bacillus subtilis strains
(CM1-CM5) were isolated from cowdung microflora which rendered
biocontrol activity against Fusarium oxysporum and Botryodiplodia
theobromae the post-harvest rot pathogens of yam (Dioscorea
rotundata L.) tubers. Besides biocontrol, these strains exhibited
solubilization of inorganic phosphorous and production of
indole-3-acetic acid. Industrial grade food processing enzymes such
as amylase and pectinase were produced by these organisms in
submerged and solid state fermentation.
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