摘要
为了明确低温逆境下影响拮抗酵母XL-1抑菌效果的因素,提高拮抗酵母XL-1拮抗效果。本试验通过添加不同碳源,氮源,金属离子和保护剂,研究其对拮抗酵母XL-1菌的影响及作用机制。结果表明:以蔗糖为碳源,以蛋白胨为氮源是XL-1生长及抗菌物质积累的最佳培养条件,对于金属离子的选择,是以添加浓度0.1 mol/L的Ca2+为佳,添加浓度0.1 mol/L的Ca2+和2%海藻糖均显著提高拮抗酵母XL-1的抑菌能力。
In order to clarify the impact factors of the antibacterial effect at low temperature conditions and improve the antagonistic effect of antagonistic yeast XL-1, the influence and fimction mechanism of antagonistic yeast XL-1 bacteria were studied by adding different carbon sources, nitrogen sources, metal ions, and protective agents. The results showed that： the optimal culture conditions for the growth and the antibacterial accumulation of XL- 1 are used substance sucrose as carbon source and peptone as the nitrogen source, respectively; for the choice of metal ions, the concentration of 0.1 mol/L of Ca2＋ is preferably added, furthermore the added concentration 0.1 mol/L of Ca2＋ and 2% trehalose significantly can also greatly improve the antibacterial capacity of antagonistic yeast XL-1.
出处
《食品工业》
北大核心
2013年第7期131-133,共3页
The Food Industry
基金
石河子大学自然科学基金(4002901)
关键词
拮抗酵母
碳源
氮源
金属离子
antagonist yeast
carbon source
nitrogen source
metal ions
