Biotechnology

Yeast uses anaerobic respiration to convert sugars into ethanol and carbon dioxide. This process generates energy for the yeast, while the ethanol is then extracted and used as a biofuel, an alternative energy source.

Yeast carries out anaerobic respiration, producing carbon dioxide gas. This gas creates bubbles in the dough, causing it to rise. Baking then solidifies the dough, resulting in the light and airy texture of bread.

Pectinase is an enzyme that breaks down pectin, a substance that holds plant cell walls together. By breaking down pectin, pectinase clarifies fruit juice, making it clearer and easier to filter.

Biological washing powders contain enzymes like proteases (break down proteins), lipases (break down fats), and amylases (break down starches). These enzymes break down complex stain molecules into smaller, water-soluble molecules that can be easily washed away.

Lactase is an enzyme that breaks down lactose, a sugar found in milk, into glucose and galactose. Adding lactase to milk hydrolyzes the lactose, making the milk suitable for people with lactose intolerance.

A fermenter is a vessel used to grow microorganisms like bacteria and fungi in large quantities under controlled conditions. This allows for the large-scale production of useful products like insulin, penicillin, and mycoprotein.

Maintaining optimal temperature is crucial because enzymes in microorganisms are temperature-sensitive. Too high a temperature can denature enzymes, while too low a temperature slows down metabolic processes, both reducing product yield.

pH affects enzyme activity and microbial growth. Maintaining the optimal pH ensures that enzymes function efficiently and that the microorganisms thrive, leading to maximum production of the desired product. Changes in pH can inhibit growth.

Many industrial microorganisms like Penicillium require oxygen for aerobic respiration to produce the desired product. Adequate oxygen supply ensures that the microorganisms have sufficient energy for growth and product synthesis.

Microorganisms need a consistent supply of nutrients like sugars, amino acids, and minerals for growth and product formation. Controlled nutrient supply ensures that the microorganisms have the necessary building blocks and energy for efficient production.

Waste products, such as carbon dioxide and toxins, can inhibit microbial growth and enzyme activity. Removing these waste products prevents their accumulation, maintaining a healthy environment for the microorganisms and optimizing product yield.