Novel Fungal Co-Culture Technique for Enhanced Bioconversion of Agro-Industrial Waste to Amylase

Raja Reddy Maddimadugu, Suresh Yadav Panyam, Venkata Siva Prasad Battala, Swarnalatha Adiboyina and Subhosh Chandra Muni Ramanna Gari*

Department of Microbiology, Yogi Vemana University, Kadapa, Andhra Pradesh, India.

Corresponding Author E-mail:chandra298@gmail.com

DOI : http://dx.doi.org/10.12944/CARJ.11.3.05

Abstract:

Global strategies for management of solid waste occasionally lead to the environmental pollution. Now a days environmental friendly methods to valorize this waste are more demand to reduce the global warming. Solid-state fermentation (SSF) which is a potential waste recycling method to convert these solid wastes into value-added products by microbial population. In the present study, SSF was carried out using four substrates namely castor husk, rice husk, groundnut fodder, sugarcane bagasse and saw dust for the selection of renewable and chief substrate for the industrial production of amylase enzyme. We used two indigenous strains i.e., Aspergillus protuberus and Aspergillus unguis. Maximum production of α-amylase 1.614 U/g of substrate and 0.958 U/g of substrate on 2^nd day of incubation in rice husk respectively. Groundnut waste (0.847 U/g of substrate) and castor husk (0.692 U/g of substrate) were also showed highest production of glucoamylase on 1^st day and 2^nd day of incubation in SSF. Further, prominent increase in the production of α-amylase (12 U/ml) and glucoamylase (3 U/ml) and extra cellular secretion of protein (20 mg/ml) was noticed in co-culture system on 2^nd day of incubation in submerged fermentation (SmF).

Keywords:

Amylase; Aspergillus protuberus; Agricultural residues; Aspergillus unguis; Co-culture; SSF; SmF

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