食品科学 ›› 2012, Vol. 33 ›› Issue (5): 25-28.doi: 10.7506/spkx1002-6630-201205005

• 基础研究 • 上一篇    下一篇

高静压和热杀菌对桃汁香气成分的影响

徐增慧,贾建会,吕晓莲,彭义交,田 旭,郭 宏   

  1. 北京市食品研究所
  • 出版日期:2012-03-15 发布日期:2012-03-03
  • 基金资助:
    北京市科技计划项目(D101105046610001)

Effect of High Hydrostatic Pressure and Heat Sterilization on Volatile Components in Peach Juice

XU Zeng-hui,JIA Jian-hui,LU Xiao-lian,PENG Yi-jiao,TIAN Xu,GUO Hong   

  1. Beijing Food Research Institute, Beijing 100162, China
  • Online:2012-03-15 Published:2012-03-03

摘要: 比较高静压和热杀菌处理后对桃汁香气成分的影响。未处理前桃汁的香气成分主要包括乙酸、3-甲基戊醇、丙二醇甲醚醋酸酯、苯甲醛等。高静压处理后酯类成分含量增加,其中乙酸丁酯、邻苯二甲酸二丁酯的含量相对未处理条件下分别增加了516.67%和40.91%,苯甲醛和壬醛各增加了219.78%和130.55%,新增了3,4-二甲基-2-己酮等4种酮类物质以及邻苯二甲酸二乙酯等酯类物质,醇类物质损失明显。热杀菌加剧了桃汁主要香气成分的变化,乙酸丁酯含量下降,丙二醇甲醚醋酸酯、乙酸、3-甲基戊醇、苯甲醇等物质未检出,而2-癸烯-1-醇(油醇气味)成分的增加,使热杀菌后桃汁风味变差。可见,高静压比热杀菌更能有效保持桃汁的风味。

关键词: 高静压, 热杀菌, 桃汁, 香气

Abstract: In this paper, the effect of high hydrostatic pressure (HHP) and heat sterilization treatments on volatile components in peach juice was investigated. The major volatile components in untreated peach juice were acetic acid, 1-pentanol, 3-methyl-methoxy-2-propyl acetate and benzaldehyde. The esters exhibited the increase after HHP treatment, which were acetyl butyl ester and dibutyl phthalate with the content increase by 516.67% and 40.91%, benzaldehyde and nonanal with the content increase by 219.78% and 130.55%. Meanwhile, HHP treatment revealed the occurrence of new compounds such as 3, 4-dimethyl-2-hexanone and diethyl phthalate and an obvious loss of alcohols. Heat sterilization led to dramatic change of volatile components in peach juice, which exhibited the content decrease of acetyl butyl ester, and complete loss of 1-methoxy-2-propyl acetate, acetic acid, 3-methyl-pentanol and benzyl methanol. However, the increased 2-decen-1-ol (oil flavor) damaged the flavor of peach juice. All of these results indicated that HHP could retain better flavor of peach juice than heat sterilization.

Key words: high hydrostatic pressure, heat sterilization, peach juice, volatile components

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