Microorganisms are used to make products such as antibiotics, vaccines, steroids, alcohols and other solvents, vitamins, amino acids, and enzymes. Microorganisms can even leach valuable minerals from low- grade ores. Staphylococcus aureus able to protect themselves against radicals and oxidants by producing carotenoid pigments. A golden yellow pigment called staphyloxanthin which is a precursor of - carotene has antioxidant and free radical scavenging properties in both in vivo and in vitro models. The book consists of evaluating the antioxidant property of pigment staphyloxanthin produced by...

The enzyme β-galactosidase has tremendous potential in research and application in various fields like food, bioremediation, biosensor, diagnosis and treatment of disorders. The sources of the β-galactosidase are microorganisms, plants and animals. β-galactosidase producing bacteria was isolated from milk and milk products. Bacteria were tested for their ability to hydrolyze 5- bromo-4-chloro-3-indolyl-β-D-galactosidase (X-Gal) and O-nitro phenyl-β-D-galactopyranoside (ONPG). Further, it was characterized by biochemical and molecular methods.