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...