Optimization of fermentation conditions for cellulases production by Bacillus licheniformis MVS1 and Bacillus sp. MVS3 isolated from Indian hot spring

Abstract

The aim of this work was to study the effect of some nutritional and environmental factors on the production of cellulases, in particular endoglucanase (CMCase)

Enhanced Cellulase Production by a Novel Thermophilic Bacillus licheniformis 2D55: Characterization and Application in Lignocellulosic Saccharification

“…Sugarcane bagasse has been utilized for heat and electricity generation in countries such as Brazil (Dias et al 2012); however, the majority of bagasse still constitutes environmental pollution in many parts of the world. As abundant and renewable resources, much attention has been focused on the conversion of agro-waste biomass into value-added products such as bioethanol (Madhavan et al 2012), hydrogen (Alonso et al 2010), and cellulase enzymes (Acharya and Chaudhary 2012;Harun et al 2012). Therefore, RH and BAG could present cheaper carbon substrates for cellulase production compared with carboxymethylcellulose (CMC) and Avicel®.…”

Optimization of Process Conditions for the Production of Holocellulase by a <i>Bacillus</i> Species Isolated from Nahoon Beach Sediments

“…MVS3; while pH 8 was optimum for cellulase production by Bacillus sp. 313SI using pretreated rice straw as carbon source (Acharya and Chaudhary, 2012;Goyal et al, 2014). Sharma et al (2013) accounted that initial pH 6.5 and 7.5 were optimal for cellulase production and pH 7.5 and 8 for xylanase production by B. licheniformis, Bacillus sp., B. megaterium and B. subtilis respectively.…”

“…Several Bacillus species includig B. circulans, B. amyloliquefaciens, B. halodurans, B. licheniformis, B. subtilis and B. mojavensis have been reported as producers of cellulase and xylanase (Ray et al, 2007;van Dyk et al, 2010;Sepahy et al, 2011;Acharya and Chaudhary, 2012). However, investigation of hemi (cellulolytic) bacteria from marine environment is on the increase due to their remarkable versatility and adaptation to heterogeneous environmental conditions (Lordan et al, 2011).…”

Optimization of Endoglucanase Production from a Novel Bacterial Isolate, Arthrobacter sp. HPG166 and Characterization of Its Properties

“…In the recent years, growing attention has been devoted to the cellulases because of the diversity of their applications such as paper recycling, laundry, cotton processing, biofuel production, food processing, as well as pharmaceutical applications (Pradeep and Narasimha 2011;Acharya and Chaudhary 2012). Since the cellulose enzymes are used in a wide variety of industrial applications, the demand for more stable, highly active, and substrate specific enzymes is also growing rapidly (Shahzadi et al 2014).…”

“…In the bioprocess and modern industrial applications, the enzymes often need to have some unique properties, such as high thermal stability, salt-tolerance, pH stability, heavy metal tolerance, and resistance to acid or alkaline media in extreme conditions. However, a major disadvantage for industrial application is that most cellulases of fungal origin lack thermal stability at high temperature (Acharya and Chaudhary 2012). Since most industrial processes are carried out at high temperatures, the industrial applications of fungal origin cellulases are correspondingly limited (Acharya and Chaudhary 2011).…”