等离子体喷雾反应器灭活苹果汁中耐高渗酵母的效果  

Application of Plasma Spray Reactor to Inactivate the Osmotolerant Yeast Zygosaccharomyces rouxii in Apple Juice

作　　者：张绍君 张文乐 周嘉佳 李圣杰 岳田利 王英 ZHANG Shaojun;ZHANG Wenle;ZHOU Jiajia;LI Shengjie;YUE Tianli;WANG Ying(College of Food Science and Pharmacy,Xinjiang Agricultural University,Ürümqi 830052,China;College of Food Science and Engineering,Northwest University,Xi’an 710069,China)

机构地区：[1]新疆农业大学食品科学与药学学院,新疆乌鲁木齐830052 [2]西北大学食品科学与工程学院,陕西西安710069

出　　处：《食品科学》2023年第11期57-63,共7页Food Science

基　　金：国家自然科学基金地区科学基金项目(32060574);自治区高校科研项目(XJEDU2020Y015)。

摘　　要：为探究等离子体喷雾反应器对苹果汁中耐高渗酵母的灭活效果,本实验以耐高渗酵母为研究对象,研究在不同等离子体放电电压、气体流速、液体流速下耐高渗酵母的灭活效果并观察酵母的形态变化以及该处理方法对苹果汁品质的影响。结果表明,利用等离子体喷雾反应器,在21 kV的放电电压、150 L/h的气体流速和9.0 L/h的液体流速下处理0.5 L苹果汁30 min,能够使苹果汁中耐高渗酵母细胞数量对数值明显降低,等离子体喷雾反应器处理会使细胞破裂,从而灭活酵母细胞。在此最优参数下进行后续实验,经等离子体喷雾反应器处理后苹果汁的pH值略有升高,但可滴定酸和还原糖质量浓度没有显著变化(P>0.05),苹果汁的主要挥发性化合物的组成成分变化不明显。本研究可为等离子体喷雾反应器在苹果汁生产加工中的应用提供参考。The inactivation effect of plasma spray reactor on Zygosaccharomyces rouxii in apple juice was studied as a function of plasma discharge voltages,gas flow rate and liquid flow rate,and the morphological changes of the cells and the effect of this treatment on apple juice quality were evaluated.In this study,a plasma spray reactor was used to treat 0.5 L of apple juice for 30 min at a discharge voltage of 21 kV,a gas flow rate of 150 L/h,and a liquid flow rate of 9.0 L/h.The number of osmotolerant yeast cells in apple juice decreased significantly.Plasma spray reactor treatment caused cell rupture,thus resulting in the inactivation of yeast cells.Under the optimal parameters,this treatment increased the pH of apple juice slightly,but did not cause any significant changes in the titratable acid or reducing sugar concentration(P>0.05)and resulted in no significant changes in the major major volatile compounds in apple juice.This study may provide a reference for the application of plasma spray reactor in apple juice processing.

关 键 词：等离子体喷雾反应器 耐高渗酵母 苹果汁 灭活 

分 类 号：TS255.44[轻工技术与工程—农产品加工及贮藏工程]