Related Experiment Video
Updated: Apr 27, 2026
06:08
Design of Solid-State Fermentation Systems for Polymer Hydrolytic Extracellular Enzyme Production by Filamentous Fungi
Published on: June 6, 2025
1.8K
Optimization of Amylase Production from B. amyloliquefaciens (MTCC 1270) Using Solid State Fermentation
Koel Saha1, Sujan Maity1, Sudeshna Roy1
1Department of Biotechnology, Haldia Institute of Technology, ICARE Complex, Purba Medinipur, West Bengal 721657, India.
International Journal of Microbiology
|June 21, 2014
Summary
Optimizing solid-state fermentation with Bacillus amyloliquefaciens enhances microbial amylase production. Adding calcium ions and sugars like D-inositol improves enzyme stability and yield, crucial for industrial applications.
Area of Science:
- Biotechnology
- Industrial Microbiology
- Enzyme Technology
Background:
- Microbial amylase is vital across various industries.
- Solid-state fermentation (SSF) offers a sustainable production method.
- Bacillus amyloliquefaciens is a key microbial producer of amylase.
Purpose of the Study:
- To optimize SSF conditions for enhanced amylase production.
- To investigate the impact of specific ions and sugars on amylase yield and stability.
- To utilize agro-industrial waste as a substrate for cost-effective production.
Main Methods:
- Solid-state fermentation using Bacillus amyloliquefaciens (MTCC 1270).
- Optimization of fermentation media with calcium (Ca+2), nitrate (NO3-), chloride (Cl-) ions, D-inositol, and mannitol.
- Incubation at 37°C with analysis of amylase activity and stability.
Main Results:
- Amylase production was significantly enhanced by optimizing SSF conditions.
- Calcium ions (Ca+2) were crucial for maintaining amylase structure, activity, and stability.
- Inclusion of D-inositol and mannitol further improved enzyme stability against thermal decay.
Conclusions:
- Optimized SSF using agro-industrial waste and Bacillus amyloliquefaciens is effective for amylase production.
- Calcium ions and specific sugars are beneficial additives for enhancing enzyme yield and stability.
- This study provides a foundation for cost-effective industrial-scale microbial amylase production.
Related Concept Videos
01:25Production of Organic Acids
105
Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...
105
01:22Bioreactor Controls-III
67
Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...
67
01:27Production of Antibiotics
249
Penicillin, one of the earliest and most widely used antibiotics, is produced industrially by the filamentous fungus Penicillium chrysogenum. Large stirred-tank bioreactors ranging from tens to hundreds of thousands of liters maintain tightly controlled temperature, pH, and dissolved oxygen conditions to support fungal metabolism and maximize antibiotic yield. Penicillin is a secondary metabolite, synthesized primarily during the stationary growth phase, which requires a carefully managed...
249
01:18Production of Biopesticides
99
Biopesticides offer a sustainable alternative to chemical pesticides, utilizing microbial agents to control agricultural pests. Bacillus thuringiensis (Bt) is a widely employed bacterium known for its potent insecticidal activity. Bt biopesticides are favored for their specificity to insect pests, minimal environmental impact, and natural degradability.Mechanism of Bt Toxin Action Bt produces insecticidal crystal (Cry) proteins during its sporulation phase. These proteins form parasporal...
99
01:29Microbes in Food Production
390
Microbial fermentation is central to food biotechnology, enhancing flavor, texture, preservation, and stability. Fermentative microorganisms metabolize carbohydrates into organic acids, alcohols, and other metabolites that inhibit spoilage organisms and improve digestibility while contributing distinctive sensory qualities.In baking, amylases naturally present in flour hydrolyze starch into monosaccharides such as glucose, which Saccharomyces cerevisiae ferments anaerobically. Through...
390
01:30Production of Pharmaceuticals
90
Industrial insulin production uses genetically engineered E. coli expressing a proinsulin gene controlled by a tryptophan promoter and containing a methionine linker for later cleavage. The cells also carry ampicillin resistance for selective growth. Seed cultures are stored at −80 °C and production begins by thawing a small amount to inoculate starter cultures, which are progressively scaled to a 50,000-L bioreactor. In the bioreactor, E. coli grow in nutrient-rich media under...
90