Related Experiment Video
Updated: Jul 19, 2026
05:09
Qualitative and Quantitative Analysis of Siderophore Production from Pseudomonas aeruginosa
Published on: March 15, 2024
Tannase production by Paecilomyces variotii
Vania Battestin1, Gabriela Alves Macedo
1Food Science Department, Faculty of Food Engineering, Campinas Stadual University, P.O. Box 6121, CEP 13083-862 Sao Paulo, SP, Brazil. vania@fea.unicamp.br
Bioresource Technology
|October 19, 2006
Summary
Optimizing tannase production using Paecilomyces variotii involved surface response methodology. Key factors like temperature, residue composition, and tannic acid concentration significantly boosted enzyme activity by 8.6-fold.
Area of Science:
- Biotechnology
- Enzyme Engineering
- Industrial Microbiology
Background:
- Tannase production is crucial for various industrial applications.
- Optimizing fermentation conditions is essential for maximizing enzyme yield.
- Paecilomyces variotii is a known producer of tannase.
Purpose of the Study:
- To optimize laboratory-scale tannase production using Paecilomyces variotii.
- To identify key factors influencing tannase biosynthesis.
- To enhance tannase activity through medium and condition optimization.
Main Methods:
- Surface response methodology was employed for optimization.
- Variables studied included temperature, residue composition (coffee husk:wheat bran), tannic acid concentration, and fermentation time.
- Supplementation with nitrogen and carbon sources was investigated.
Main Results:
- Temperature, residue composition, and tannic acid concentration significantly impacted tannase production.
- Optimal conditions identified: 29-34°C, 8.5-14% tannic acid, 50:50 coffee husk:wheat bran residue, and 5-day incubation.
- Ammonia nitrate supplementation significantly enhanced tannase activity.
- Tannase activity increased 8.6-fold after optimization.
Conclusions:
- Surface response methodology effectively optimized tannase production.
- Identified optimal conditions provide a robust protocol for enhanced tannase yield.
- Further research can explore scale-up and application of the optimized enzyme.
Related Concept Videos
01:27Production of Alcohol
Continuous fermentation is a key strategy in industrial ethanol production, particularly when efficiency, scalability, and high yields are essential. This approach allows for uninterrupted operation and optimized resource utilization. The primary feedstock, corn starch, undergoes enzymatic hydrolysis facilitated by α-amylase and glucoamylase. These enzymes break down the starch into fermentable sugars such as glucose, which are readily assimilated by fermentative microorganisms.Fermentation...
01:25Production of Organic Acids
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...
01:27Production of Antibiotics
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...
01:27Microbes in the Production of Fermented Foods
Lactic acid bacteria (LAB) and molds are instrumental in fermenting plant-based foods to enhance preservation and ensure year-round availability. These microbial processes convert plant carbohydrates into organic acids and other metabolites that inhibit spoilage organisms and contribute to the sensory qualities of the final product.In sauerkraut production, cabbage goes through a microbial succession that starts with cocci such as Leuconostoc mesenteroides. These microbes begin fermentation by...
01:30Production of Pharmaceuticals
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 sterile, tightly...