食品科学 ›› 2018, Vol. 39 ›› Issue (5): 99-105.doi: 10.7506/spkx1002-6630-201805016

• 基础研究 • 上一篇    下一篇

2-L-天冬氨酸-2-脱氧-D-葡萄糖的合成及热裂解分析

芦昶彤1,陈芝飞1,马宇平1,*,侯 佩2,付瑜锋1,郑峰洋1,李成刚1,孙志涛1,高明奇1,张 展1   

  1. 1.河南中烟工业有限责任公司技术中心,河南 郑州 450000;2.郑州轻工业学院食品与生物工程学院,河南 郑州 450002
  • 出版日期:2018-03-15 发布日期:2018-03-14
  • 基金资助:
    河南中烟工业有限责任公司2015年度科技攻关项目(YN2015002)

Synthesis and Pyrolysis of 2-L-Aspartic Acid-2-Deoxy-D-Glucose

LU Changtong1, CHEN Zhifei1, MA Yuping1,*, HOU Pei2, FU Yufeng1, ZHENG Fengyang1, LI Chenggang1, SUN Zhitao1, GAO Mingqi1, ZHANG Zhan1   

  1. 1. Technology Center, China Tobacco Henan Industrial Co. Ltd., Zhengzhou 450000, China; 2. School of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
  • Online:2018-03-15 Published:2018-03-14

摘要: 以D-果糖和L-天冬氨酸单钾盐为原料合成了2-L-天冬氨酸-2-脱氧-D-葡萄糖,利用傅里叶变换红外光谱、 1H核磁共振(nuclear magnetic resonance,NMR)、13C NMR和高分辨率质谱技术进行结构表征。应用热重-微商 热重和在线裂解气相色谱/质谱联用技术分别研究了2-L-天冬氨酸-2-脱氧-D-葡萄糖的热失重和热裂解行为。采用 1,1-二苯基-2-三硝基苯肼(1-diphenyl-2-picrylhydrazyl,DPPH)自由基清除法和还原能力法对其体外抗氧化活性进 行测定。结果表明:合成产物为目标化合物;目标化合物的裂解温度为187.8 ℃,700 ℃时总失重达到91.26%;目 标化合物裂解产物的数量随温度的升高而增多,裂解产物包括杂环类、酮类、羧酸类、醛类、酚类、烯烃类、醇类 和芳烃类等化合物,裂解产物表现出烘焙香、甜香、焦甜香、可可香、花香和奶香等香韵;目标产物具有较强的 DPPH自由基清除能力和还原能力,是一种潜在的抗氧化剂。

关键词: 2-L-天冬氨酸-2-脱氧-D-葡萄糖, Heyns重排反应, 合成, 热失重, 热裂解, 气相色谱-质谱法, 香韵

Abstract: 2-L-Aspartic acid-2-deoxy-D-glucose was synthesized from D-fructose and L-aspartic acid monopotassium salt, and it was characterized by Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance (NMR), 13C NMR and high resolution mass spectroscopy. The thermogravimetric behavior, thermal pyrolysis behavior and antioxidant activity of 2-L-aspartic acid-2-deoxy-D-glucose was investigated using thermo gravimetry-derivative thermo gravimetry (TG-DTG), on-line pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS), and 1-diphenyl-2-picrylhydrazyl (DPPH) scavenging and reducing capacity assays, respectively. The results showed that the synthetic product was confirmed to be the target compound. The target compound has a pyrolysis temperature of 187.8 ℃ and a total weight loss of 91.26% at 700 ℃. The number of pyrolysis products from the compound increased with reaction temperature. The pyrolysis products included heterocyclic hydrocarbons, ketones, carboxylic acids, aldehydes, phenols, olefins, alcohols and aromatic hydrocarbons and other compounds, which had baking, sweet aroma, burnt-sweet, cocoa-like incense, floral and milky aroma notes. The synthetic product possessed strong DPPH free radical scavenging and reducing capacity and could be regarded as a potential antioxidant.

Key words: 2-L-aspartic acid-2-deoxy-D-glucose, Heyns rearrangement reaction, synthesis, thermal weight loss, pyrolysis, gas chromatography-mass spectrometry, aroma notes

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