营养条件对灰树花产胞外多糖产量的影响

灰树花是一种营养丰富的食、药两用真菌 .灰树花胞外多糖是一种具有生理活性的真菌多糖 .作者研究了营养条件对灰树花产胞外多糖的影响 ,确定了合理的初始碳源、氮源、无机离子、生长因子的质量浓度 .进一步的正交试验表明 ,灰树花产胞外多糖较佳的培养基组合为 :葡萄糖 4 0g/L ,蛋白胨 5g/L、磷酸二氢钾 4 g/L ,硫酸镁 2 g/L、玉米浆 2 0 g/L .

Effects of Nntritional Conditions on the Production of Extracellular Polysaccaride of Grifola frondosa

Grifola frondosa is an edible and medicinal fungus. Extracelluar Polysaccharide of Grifola frondosa has various physiological activity. In the paper, the effects of nutritional conditions on the production of extracellular polysacchride of Grifola frondosa are discussed. The effects of carbon source, nitrogen source, growth factors, and inorganic salts on the production of extracellular polysaccharide of Grifola frondosa were studied. Through the orthogonal test, we found that a medium containing 40 g/L glucose,5 g/L peptone,4 g/L potassium dihydrogen phosphate and 20 g/L corn steep liquor was the best for the production of extracellular polysaccharide