超高压和传统冷咖啡在不同度的比较:物理化学特征和挥发性和非挥发性成分
Qihan Shi1, Ying Xiao2, Yiming Zhou1
1School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China.
Foods (Basel, Switzerland)
|October 16, 2024
概括
烤度对超高压 (UHP) 咖啡的影响小于传统冷 (CB). 虽然物理化学性质相似,但较深的烤肉增加了UHP咖啡中的抗氧化剂和改变了感觉概况.
科学领域:
- 食品科学 食品科学 食品科学
- 饮料技术 饮料技术
- 感官科学 感官科学
背景情况:
- 超高压 (UHP) 技术加速了咖啡的提取.
- 咖啡豆烤度对UHP冷 (CB) 特性的影响尚不清楚.
- 造对传统咖啡的化学成分和感官属性产生重大影响.
研究的目的:
- 为了研究光,中,暗对UHP咖啡的影响.
- 分析物理化学性质,挥发性和非挥发性成分,以及感官评估.
- 为了比较烤制对UHP咖啡和传统CB咖啡的影响.
主要方法:
- 从浅色,中色和深色烤豆制成的UHP咖啡.
- 物理化学特征的分析 (TDS,EY,TTA,TS,TPC). 它们是什么?
- 非挥发性成分的量化 (抗氧化能力,黑色素,咖啡因,三角蛋白,CGA).
- 气色谱-质谱 (GC/MS) 用于挥发性化合物.
- 感官评估和主要组件分析 (PCA).
主要成果:
- 超高温咖啡的物理化学特征在度上大致相似,与传统的CB相比.
- 在UHP咖啡中,抗氧化能力,黑色素,咖啡因,三角蛋白和CGA含量随着烤度的增加而增加.
- 感官属性转向有坚果味,苦味和味的形状,烤肉更深,而花和果味的音调则减少.
- 挥发性化合物通常随着烤度的增加而增加,确定了15种关键的气味活性化合物.
- PCA表示,与传统CB咖啡相比,度对UHP咖啡的影响较小.
结论:
- 与传统CB相比,度对UHP咖啡的整体形状的影响较小.
- 经过UHP加工,可以减轻咖啡中烤通常引起的一些重大变化.
- 在UHP咖啡中,较深的烤肉增强了某些可取的化合物和诸如苦味和坚果味之类的感官属性.
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