Production of exopolysaccharides by Agrobacterium sp. CFR-24 using coconut water - a byproduct of food industry.
OBJECTIVE
The work is intended to explore the suitability of underutilized coconut water (a byproduct of food industry) for the production of exopolysaccharides (EPS) by Agrobacterium sp. CFR 24.


RESULTS
Besides checking the suitability of coconut water for the production of water-soluble (WS) and water-insoluble (WIS) EPS, certain fermentation parameters, such as initial pH, incubation period and kinetics of EPS production were investigated. The coconut water medium was found to support the production of both types of EPS. The optimal initial pH and temperature was found to be 6.0 and 30 degrees C, respectively. In shake flask (150 rev min(-1)) studies, high-cell density inoculum resulted in the production of 11.50 g l(-1) of WIS-EPS and 4.01 g l(-1) WS-EPS after 72 and 96 h of fermentation, respectively.


CONCLUSIONS
Coconut water was found suitable for the production of microbial EPS by Agrobacterium sp. CFR 24 strain. Under optimum conditions, it produced a good amount of WIS-EPS, which is comparable with that of the sucrose medium (11 g l(-1)).


CONCLUSIONS
This is the first report on the use of coconut water as a fermentation medium for the production of any microbial EPS. Besides producing value-added products, use of this food industry byproduct, which is often being drained out, can significantly reduce the problem of environmental pollution.
Shivakumar
S
S
Department of Food Microbiology, Central Food Technological Research Institute, Mysore, India.
Vijayendra
S V N
SV
D018533:Biomass; D003059:Cocos / Q000378:metabolism; D005285:Fermentation; D006863:Hydrogen-Ion Concentration; D007218:Industrial Microbiology; D007700:Kinetics; D010936:Plant Extracts / Q000378:metabolism*; D011135:Polysaccharides, Bacterial / Q000096:biosynthesis*; D012231:Rhizobium / Q000378:metabolism*; D013696:Temperature; D013997:Time Factors
D010936:Plant Extracts; D011135:Polysaccharides, Bacterial