A Report on Production of organic selenium for livestock’s and poultry

Abstract

Selenium yeast ,produced by growing select strains of Saccharomyces cerevisiaein selenium-rich media, is a recognized source of organic food-form Se, but the determination of its exact composition with respect to the Se species present produced confilicting results.Improved methods of analysis have since reveled it to contain 90+ % of its Se in the form of selenomethionine, the principal organic nutritional form of Se for higher animals and humans. Yeast (Saccharomyces cervisiae) also excellent sources of methionine. So yeast media also widely used as a protein source.This study is conducted to know the amount of organic selenium and methionine produced by the yeast (Saccharomyces cerevisiae).Amount of those organic selenium and methionine from yeast media estimated by chemical test. It was found that yeast media contain 3.5% methionine and 2 mg per gm of inorganic selenium. The safety record of Se yeasty is excellent. During the three decades of its world-wide use as a source of supplement Se ,no cases of Se poisoning have occurred due to dosage or formulation errors