食品科学 ›› 1998, Vol. 19 ›› Issue (10): 13-17.

• 专家约稿 • 上一篇    下一篇

乳酸菌发酵乳中挥发性风味物质的动力学分析

 吕加平, 骆承库   

  1. 东北农业大学
  • 出版日期:1998-10-15 发布日期:2011-12-13

 LV Jia-Ping , LUO  Cheng-Ku   

  • Online:1998-10-15 Published:2011-12-13

摘要: 采用气相色谱技术对8个乳酸菌种(SL)发酵脱脂乳(11%NFS)后的6种风味物质进行了动力学分析。结果表明:嗜热乳杆菌发酵脱脂乳中各风味物质均高于乳球菌和干酪乳杆菌,在发酵24h时丁二酮的产量最高,以后有较明显的下降,选出了ST-1与LB-1为一对风味良好的酸奶菌株。此外,SD菌也是一种产香显著的嗜温菌,它与SC一样,在30℃的产香力优于37℃的产香力。

关键词: 乳酸菌, 发酵脱脂乳, 挥发性风味物质

Abstract: six flavour of skim milk fermented in eight species of LAB were analysted with gas chromatography.The quantity of acetaldehyde, acetone, acetic ether, isopene alcohol, produced by lactobacillus (except L.Casei) was higher than that of lactococcus. Diacetyl obviously decreased after 24h fermentation. ST-1 strain could produce more flavour materials at 37℃ than at 42℃. It were contrary with LB-1. Mesophilus LAB (SC. SD) which produced more flavour materials at 30℃ than 37℃.

Key words: Lactic acid bacteria, Fermented skim milk, Flavour material