复合壁材包埋己酸菌制备微胶囊及其在浓香型白酒酯化液中的应用  

Preparation of the Caproic Acid Bacteria Microcapsule Embedded with Composite Wall Materials and Its Application in Esterificated Liquid of Nongxiangxing Baijiu

作　　者：何运 周文川 张玫 HE Yun;ZHOU Wenchuan;ZHANG Mei(Luzhou Vocational&Technical College,Luzhou 646000,China)

机构地区：[1]泸州职业技术学院,四川泸州646000

出　　处：《食品安全导刊》2023年第8期125-129,共5页China Food Safety Magazine

基　　金：2021年泸州职业技术学院校级科研项目“浓香型白酒酯化液包埋技术研究与应用”阶段研究成果(K-2126)。

摘　　要：研究己酸菌多壁材复配包埋固定化方法,将制备的己酸菌微胶囊应用于浓香型白酒酯化液的发酵生产,提高酯化液中己酸的合成量。采用单纯形质心混料试验设计,探究3种壁材复配使用的最优组合。结果表明,以抗性糊精0.06 g、β-环糊精0.85 g、海藻酸钠1.09 g进行复配,在无菌生理盐水中对己酸菌液(1%,V/V)进行包埋固定,微胶囊中己酸菌包埋量可达(8.73±0.07)×10^(7) CFU·g^(-1)。浓香型白酒酯化液模拟发酵试验结果显示,当发酵时间超过21 d,己酸菌微胶囊表现出比己酸菌液更持久和稳定的己酸产量。In order to improve the synthesis amount of caproic acid in the esterificated liquid of Nongxiangxing Baijiu,the caproic acid microcapsules were prepared and applied to the fermentation of the esterificated liquid of Nongxiangxing Baijiu.The optimal combination of the three wall materials was explored by the simplex centroid mixture experiment design.The results showed that the caproic acid bacteria liquid(1%,V/V)was effectively fixed in sterile saline solution with the compound usage of resistant dextrin 0.06 g,β-cyclodextrin 0.85 g,sodium alginate 1.09 g.On this condition,the embedding amount of caproic acid bacteria in microcapsules reached(8.73±0.07)×10^(7) CFU·g^(-1).The results of simulated fermentation test in the esterificated liquid showed that the caproic acid microcapsules showed more lasting effect and stability than caproic acid liquid when the fermentation time was over 21 days.

关 键 词：复合壁材 己酸菌 微胶囊 浓香型白酒 酯化液 

分 类 号：TS262.31[轻工技术与工程—发酵工程]