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相关概念视频

Loss of Carboxy Group as CO2: Decarboxylation of β-Ketoacids01:02

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Carboxylic acids, upon heating, undergo a decarboxylation reaction by releasing carbon dioxide gas. Monocarboxylic acids do not undergo decarboxylation easily. However, a silver salt of carboxylic acid reacts with bromine or iodine under high temperature to release carbon dioxide gas and forms halide with one less carbon. This reaction is called the Hunsdiecker reaction.
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咖啡的化学组成和感觉分析用阿斯巴拉金酶处理咖啡,以减少在烤过程中形成的烯胺.

Ana CarolinaVieira-Porto1, Sara C Cunha2, Elaine C Rosa3

  • 1Laboratório de Química e Bioatividade de Alimentos e Núcleo de Pesquisa em Café (NUPECAFÉ), Instituto de Nutrição, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho, 373, CCS, Bl. J, Rio de Janeiro 21941-902, Brazil.

Food research international (Ottawa, Ont.)
|May 10, 2024
PubMed
概括
此摘要是机器生成的。

用阿斯巴拉金酶进行酶治疗显著降低了咖啡豆中的烯胺. 这种方法可以保存咖啡.

关键词:
烯胺是什么 烯胺是什么亚斯巴拉基纳酶是一种亚斯巴拉基纳酶.亚斯巴拉基因 (Aspragine) 是一种基酸 基酸 基酸咖啡和健康 咖啡和健康梅拉德反应是梅拉德反应.有机挥发性化合物 有机挥发性化合物感官分析是一种感官分析.专用咖啡是一种特殊的咖啡.蒸汽处理的蒸汽处理方法

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科学领域:

  • 食品化学 食品化学
  • 食品加工 食品加工 食品加工
  • 毒理学 毒理学 毒理学

背景情况:

  • 烯胺是一种潜在的致癌物质,在咖啡烤过程中从氨酸中形成.
  • 减少烯胺对于食品安全至关重要,但保持咖啡的感觉特征是具有挑战性的.

研究的目的:

  • 为了降低咖啡中的烯胺含量,使用阿斯巴拉基纳酶治疗.
  • 评估这种处理对咖啡感官和生物活性化合物的影响.

主要方法:

  • 咖啡豆 (阿拉比卡和Canephora) 接受了不同剂量的阿斯巴拉金酶 (1000-3000ASNU) 的治疗.
  • 使用HPLC,LC-MS和GC-MS量化了烯胺,氨酸和生物活性化合物 (基酸,咖啡因,三角蛋白).
  • 感官评价是由专业的咖啡师和消费者进行的.

主要成果:

  • 在烤咖啡豆中,阿斯帕拉金酶治疗显著降低了多达60.7%的烯胺.
  • 总基酸和乳的含量略有下降,而咖啡因和甘氨酸的含量基本保持不变.
  • 感官分析显示的变化很小,一些样本显示感官描述器得到了改进,并减少了非注释.

结论:

  • 阿斯帕拉金酶是一种有效的方法来减少咖啡中的烯胺,而不会对咖啡的感觉质量产生负面影响.
  • 酶处理为生产更安全的咖啡产品提供了一个有希望的方法.
  • 进一步的研究可能会优化酶剂量,以最大限度地减少烯胺,同时完全保留感官属性.