sterility

Sterilization by heat

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Sterilization means the freeing of an article from all living forms that includes viruses, bacteria and their spores, fungi and their spores, both pathogenic and non-pathogenic forms. There are four different methods of sterilization. They are a) Heat b) Filtration c) Irradiation d) Chemical disinfection. The most widely applicable and reliable method is sterilization by … Read more

Principal vitamins and its function

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Vitamins            Function Deficiency A(retinol) Rhodopsin synthesis, normal health of epithelial cells, and bone and tooth growth. Rhodopsin deficiency, night blindness, retarded growth, skin disorders, and increased infection risks. B1(thiamine) Involved in carbohydrate and amino acid metabolism, necessary for appetite and good health, aids in normal functioning of nervous system. Beriberi- muscle weakness, neuritis and … Read more