【摘要】 研究了压力对不同酵母菌活力、胞内海藻糖质量分数和细胞形态的影响。结果表明,不同酵母菌对压力的刺激具有不同的敏感性和适应能力,这种敏感性和适应能力与酵母发酵液的pH值关系不大。加压有利于酵母菌胞内海藻糖质量分数的积累,酵母菌株应激产物海藻糖积累越高,越有利于适应体外环境剧烈的改变,相应的酵母菌株对压力的敏感性越强,加压导致酵母菌形态变化越明显。更多还原

【Abstract】 The effect of pressure on viability,mass fraction of intracellular trehalose and cell shape of different yeast strains was studied.The results show that different yeast strains have different sensitivity and applicability;pH of broth has little effect on the sensitivity and applicability.High pressure is propitious to accumulation of intracellular trehalose content,and the higher trehalose content,the stronger ability of adaptation to the change of environment,correspondingly,the more sensitive to high pressure,the more obvious of change of cell shape.更多还原