有机酸盐在青贮乳酸发酵中抑菌效果研究.PDF

安徽农业大学学报, 2018, 45(3): 416-421 Journal of Anhui Agricultural University [DOI] 10.13610/ki.1672-352x005 网络出版时间：2018/6/20 10:32:00 [URL] /kcms/detail/34.1162.S1724.010.html 有机酸盐在青贮乳酸发酵中的抑菌效果研究 * 李晓红，罗红霞 ，句荣辉，杨新建，潘 妍，贾红亮，林少华 (北京农业职业学院，北京 102442) 摘 要：采用正交法测定了 4 种有机酸盐不同复配比分别对青贮饲料发酵时 3 种常见有害菌的抑制作用。结果 表明，脱氢醋酸钠浓度为 0.03%，山梨酸钾浓度为 0.06%，双乙酸钠浓度为 0.12%，苯甲酸钠浓度为 0.12%的复配 组合对大肠杆菌生长的抑制效果最好；脱氢醋酸钠浓度为 0.12%，山梨酸钾浓度为 0.03%，双乙酸钠浓度为 0.06%， 苯甲酸钠浓度为 0.06% 的复配组合对青霉菌生长的抑制效果最好；脱氢醋酸钠浓度为 0.06% ，山梨酸钾浓度为 0.03%，双乙酸钠浓度为 0.12%的复配组合对酵母菌的生长的抑制效果最好。 关键词：青贮；双乙酸钠；脱氢醋酸钠；山梨酸钾；苯甲酸钠 中图分类号：S816.71 文献标识码：A 文章编号：1672352X (2018)03041606 Antibacterial effects of different organic acid salt combinations LI Xiaohong, LUO Hongxia, JU Ronghui, YANG Xinjian, PAN Yan, JIA Hongliang, LIN Shaohua (Beijing Vocational College of Agriculture, Beijing 102442) Abstract: The antibacterial effects of different organic acid salt combinations were investigated by means of orthogonal experiment. When the concentration of sodium dehydroacetate, potassium sorbate, sodium diacetate and sodium benzoate were 0.03%, 0.06%, 0.12% and 0.12%, respectively, the combination showed the best effect on inhibiting the growth of Escherichia coli . The combination of 0.12% sodium dehydroacetate, 0.03% potassium sorbate, 0.06% sodium diacetate and 0.06% sodium benzoate showed the best effect on inhibiting the growth of penicillium. The combination of 0.06% sodium dehydroacetate, 0.03% potassium sorbate and 0.12% sodium di- acetate showed the best effect on inhibiting the growth of Saccharomycetes. Key words: silage; sodium diacetate; sodium dehydroacetate; potassium sorbate; sodium benzoate 青贮饲料是以全株玉米和牧草等为原料，经切 产生臭味和苦味[3] 。为确保乳酸菌群在发酵过程中 碎、压实密封装入青贮窖内，在厌氧条件下利用其