Saha Koel, Maity Sujan, Roy Sudeshna, Pahan Koustav, Pathak Rishija, Majumdar Susmita, Gupta Suvroma
Department of Biotechnology, Haldia Institute of Technology, ICARE Complex, Purba Medinipur, West Bengal 721657, India.
Int J Microbiol. 2014;2014:764046. doi: 10.1155/2014/764046. Epub 2014 May 11.
Demand for microbial amylase production persists because of its immense importance in wide spectrum industries. The present work has been initiated with a goal of optimization of solid state fermentation condition for amylase using agroindustrial waste and microbial strain like B. amyloliquefaciens (MTCC 1270). In an aim to improve the productivity of amylase, fermentation has been carried out in the presence of calcium (Ca(+2)), Nitrate (NO3 (-)), and chloride ions (Cl(-)) as well as in the presence of D-inositol and mannitol. Amylase needs calcium ion for the preservation of its structure, activity and stability that proves beneficial also for amylase production using solid state fermentation. The inclusion of ions and sugars in the SSF media is promising which can be explained by the protection offered by them against thermal decay of amylase at various incubation periods at 37°C.
由于微生物淀粉酶在广泛的工业领域具有极其重要的意义,对其生产的需求持续存在。目前的工作旨在利用农业工业废料和诸如解淀粉芽孢杆菌(MTCC 1270)等微生物菌株,优化淀粉酶固态发酵条件。为了提高淀粉酶的生产率,在存在钙(Ca(+2))、硝酸盐(NO3 (-))和氯离子(Cl(-))的情况下以及在存在D-肌醇和甘露醇的情况下进行了发酵。淀粉酶需要钙离子来维持其结构、活性和稳定性,这对于使用固态发酵生产淀粉酶也证明是有益的。在固态发酵培养基中加入离子和糖很有前景,这可以通过它们在37°C不同培养时期对淀粉酶热降解的保护作用来解释。