ISSN:
1476-5535
Keywords:
Bacterial α-amylase
;
Amyloglucosidase
;
Starch hydrolysate
;
Tapioca
;
Lactobacillus plantarum
;
Lactic acid fermentation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Summary Lactic acid production by an isolated ofLactobacillus plantarum was standardised on enzyme-hydrolysed tapioca (Manihot esculenta) flour, tapioca starch and soluble starch. Calculated yields of lactic acid (g from 100 g reducing sugars used) in nutrient media containing the abovementioned hydrolysates (10% reducing sugars) were 21.8%, 16.2% and 16.2%, respectively. Higher yields (29–34%) were obtained in media containing 5% reducing sugars. A conversion efficiency of 80–99% was achieved when the acid produced in the broth was neutralised periodically. One hundred milliliters of the medium (5% sugars) yielded 4.0–4.5 g of calcium lactate. These results indicate that unrefined starchy material can be successfully employed for the economic production of lactic acid. The same substrate can also be utilised for biomass production, as viable lactobacilli are being used for therapy in medicine.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01569524
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