园林黑茶的香味特征基于感官评估和头部空间固相微提取-气相色谱-质谱
Shenghong Zheng1, Hongling Chai1, Chunju Peng1
1Wenzhou Key Laboratory of Early-Sprouting Tea Breeding, Wenzhou Academy of Agricultural Sciences, Wenzhou 325006, China.
两轮的嗅觉优化了花茶 (GBT) 的香味. 这项研究确定了关键的挥发性化合物,如林纳醇,对GBT至关重要.
科学领域:
- 食品化学 食品化学
- 农业科学 农业科学
- 感官科学 感官科学
背景情况:
- 园林黑茶 (GBT) 是一种受欢迎的中国香茶,因其香气而受到重视.
- 多次嗅探轮对GBT挥发性成分的影响尚不清楚.
研究的目的:
- 调查重复的嗅探轮如何影响GBT的挥发性概况和感官特征.
- 为了确定负责GBT独特香气的关键挥发性化合物.
主要方法:
- 对GBT样品的感觉评估 (零,两,三次嗅探).
- 使用头部空间固相微提取-气相色谱-质谱法 (HS-SPME-GC-MS) 分析挥发性化合物.
- 多变量分析以确定关键的分化挥发性化合物 (VIP>2.0) 并评估它们的感官贡献 (OAV>1).
主要成果:
- 与没有香味的基础相比,两轮和三轮香味的GBT样品获得了更高的香味和味道的感官得分.
- Ester,terpenoid 和 ketone 是主要被发现的挥发性化合物类别.
- 确定了52个关键挥发性物质,其中28种对气味有显著的贡献 (OAV > 1).
- 确定了11种特定的挥发性物质,包括 (Z) -hex-3-enyl乙酸盐,林纳醇和 (E) -hex-2-enal,这些物质对GBT的新鲜,鲜花气息至关重要.
结论:
- 在GBT中,两轮的香味会产生优越的新鲜和优雅的香味,而三轮可能会导致略过成熟的花音.
- 建议优先进行两轮嗅探,以获得最佳的GBT生产.
- 该研究为通过流程优化改善GBT质量提供了科学基础.
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