Optimization of cellulase production by Enhydrobacter sp. ACCA2 and its application in biomass saccharification.
Cellulase finds use in saccharification of lignocellulosic agroresidues to fermentable sugars which can be used for production of commercially important metabolites. This study reports endoglucanase (CMCase) production by Enhydrobacter sp. ACCA2. The CMCase activity of the strain ACCA2 was successively improved by optimization of range of physical and nutritional parameter in a set of non-statistical and statistical experiments. Initial non-statistical selection of carbon source, incubation time, temperature and pH resulted in 1.07 fold increase of CMCase activity. In a subsequent statistical method, response surface methodology, optimization of medium components such as carboxymethylcellulose, peptone, NaCl, MgSO4, K2HPO4, and (NH4)2SO4 yielded further increase up to 2.39 fold CMCase activity. The cellulolytic potential was evaluated in biomass saccharification with different plant materials and the results revealed that the enzyme produced by strain may have significant commercial values for industrial saccharification process. Moreover, this is the first report of cellulase production by an Enhydrobacter spp.
Department of Agricultural Microbiology, Agricultural College and Research Institute, Tamil Nadu Agricultural University Madurai, India.
Nagaiah
N
Premalatha
Department of Agricultural Microbiology, Agricultural College and Research Institute, Tamil Nadu Agricultural University Madurai, India.
Nellaiappan O
NO
Gopal
Department of Agricultural Microbiology, Agricultural College and Research Institute, Tamil Nadu Agricultural University Madurai, India.
Polpass Arul
PA
Jose
Department of Agricultural Microbiology, Agricultural College and Research Institute, Tamil Nadu Agricultural University Madurai, India.
Rangasamy
R
Anandham
Korean Agricultural Culture Collection, National Academy of Agricultural Science, Rural Development Administration Jeonju, South Korea.
Soon-Wo
SW
Kwon
carboxy methyl cellulose; cellulase; central composite design; response surface methodology; saccharification