食品科学 ›› 2017, Vol. 38 ›› Issue (19): 1-6.doi: 10.7506/spkx1002-6630-201719001

• 基础研究 •    下一篇

单糖与氯化钠模型反应中3-氯-1,2-丙二醇的形成

黄明泉,李 娟,邹青青,孙宝国,田红玉,张玉玉   

  1. 北京工商大学 北京市食品风味化学重点实验室,北京食品营养与人类健康高精尖创新中心,食品质量与安全北京实验室,北京 100048
  • 出版日期:2017-10-15 发布日期:2017-09-29
  • 基金资助:
    国家自然科学基金面上项目(31471665);北京市属高等学校高层次人才引进与培养计划项目(CIT & TCD 201404034)

Formation of 3-Monochloropropane-1,2-diol in Thermal Reaction Model Systems Consisting of Monosaccharides and Sodium Chloride

HUANG Mingquan, LI Juan, ZOU Qingqing, SUN Baoguo, TIAN Hongyu, ZHANG Yuyu   

  1. Beijing Key Laboratory of Flavor Chemistry, Beijing Advanced Innovation Center for Food Nutrition and Human Health,Beijing Laboratory for Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
  • Online:2017-10-15 Published:2017-09-29

摘要: 以“单糖+氯化钠+水”为模型进行热反应,研究3-氯-1,2-丙二醇(3-monochloropropane-1,2-diol, 3-MCPD)的形成机理和消长规律。结果表明,在“葡萄糖+氯化钠+水”模型反应中,反应温度对3-MCPD的形 成影响最大,其次是氯化钠添加量、反应时间和葡萄糖添加量;在“单糖+氯化钠+水”模型中,6 种单糖都生成 了3-MCPD,其中核糖和氯化钠反应生成的3-MCPD量最大(30.604 μg/kg),果糖生成的量最小(2.498 6 μg/kg); 在“葡萄糖+氯化钠+水”模型中,反应后生成的挥发性成分5-羟甲基糠醛含量最大,然后是糠醛和2,5-二甲酰基 呋喃。根据实验结果探讨3-MCPD的形成机理,提出在单糖模型反应中缩水甘油可能是关键的中间体。

关键词: 单糖, 3-氯-1, 2-丙二醇, 热反应模型, 形成机理, 缩水甘油

Abstract: The formation of 3-monochloropropane-1,2-diol (3-MCPD) was investigated in thermal reaction model systems consisting of one of six monosaccharides, sodium chloride and deionized water. Temperature had the most significant influence on 3-MCPD formation from the “glucose + sodium chloride” model system, followed by sodium chloride concentration, reaction time and glucose concentration. In addition, 3-MCPD could be formed from all six monosaccharides. The highest amount (30.604 μg/kg) of 3-MCPD was formed from the “ribose + sodium chloride” model system and the lowest amount (2.498 6 μg/kg) from the “fructose + sodium chloride” model system under the same reaction conditions. 5-Hydroxymethyl furfural was the most abundant volatile compound detected from the “glucose + sodium chloride” model system, followed by furfural and 2,5-dimethyl acetyl furan. According to these results and the literature, the formation mechanism of 3-MCPD was discussed herein, and 3-epoxy-1-propanol (glycidol) was suggested to be as the key intermediate.

Key words: monosaccharides, 3-monochloropropane-1,2-diol, thermal reaction model, formation mechanism, glycidol

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