Optimization of protease production from Bacillus halodurans under solid state fermentation using agrowastes.

Area of Science:

• Microbiology
• Biotechnology
• Enzyme Technology

Background:

• Marine microorganisms are a rich source of novel metabolites with industrial applications.
• Proteases are enzymes with significant industrial demand.
• Agrowastes can be utilized by microbes for efficient metabolite production.

Purpose of the Study:

• To isolate and identify protease-producing marine bacteria.
• To optimize protease production using solid-state fermentation (SSF) with various agrowastes.
• To evaluate the efficacy of the produced protease in stain removal.

Main Methods:

• Isolation of protease-producing bacteria from marine sediments.
• Identification of the bacterial isolate using standard microbiological techniques.
• Solid-state fermentation (SSF) of agrowastes (e.g., wheat bran) for protease production.
• Optimization of fermentation parameters (e.g., cultural conditions).
• Enzymatic stain removal assays comparing microbial protease with commercial detergents.

Main Results:

• A protease-producing bacterium was isolated and identified as *Bacillus halodurans*.
• Wheat bran was identified as the most effective substrate for protease production via SSF.
• Optimization of fermentation conditions enhanced enzyme yield.
• The microbial protease exhibited higher efficiency in stain removal than commercial detergents.

Conclusions:

• Marine bacterium *Bacillus halodurans* is a promising source for industrial protease production.
• Agrowastes, particularly wheat bran, are suitable substrates for cost-effective protease biosynthesis.
• The marine-derived protease offers a potentially superior and eco-friendly alternative to commercial detergents for stain removal.