Question

Which lactic acid bacteria are primarily responsible for converting milk into curd?

Options

• Saccharomyces cerevisiae

• Lactobacillus and other LAB species

• Penicillium roqueforti

• Propionibacterium shermanii

Answer 1

Lactobacillus and other LAB (lactic acid bacteria) species are the primary microorganisms used for curd formation. These bacteria grow in milk, produce lactic acid, which coagulates and partly digests milk proteins to form curd. The process also increases the vitamin B₁₂ content and allows LAB to check the growth of disease-causing microbes in the stomach.