用不同的固定方法制备的木叶绿茶中抗氧化剂,非挥发性和挥发性含量的变化
Jingxuan Wu1, Qingyu Yang1, Wenyin Xia1
1Institute of Special Economic Animals and Plants, Sichuan Academy of Agricultural Sciences, Nanchong, China.
Journal of the science of food and agriculture
|February 10, 2026
概括
微波固定提高了木叶绿茶 (MLGT) 的质量,提高了抗氧化能力和可取香味. 白化也提供了好处,这使得两者都被推用于最佳的MLGT风味和健康特性.
科学领域:
- 食品科学与技术 食品科学与技术
- 农业化学 农业化学
- 分析化学 分析化学
背景情况:
- 固定技术对于木叶绿茶 (MLGT) 加工至关重要.
- 不同的固定方法对MLGT质量的影响,包括抗氧化能力和化学成分,以前还未被探索.
- 这项研究通过检查四种固定技术来解决知识差距:热空气滚筒,微波,漂白和蒸汽.
研究的目的:
- 综合调查四种不同的固定技术对木叶绿茶 (MLGT) 质量的影响.
- 分析抗氧化能力的变化,关键的非挥发性化合物和挥发性概况.
- 确定最佳的固定方法,以增强MLGT的风味和与健康相关的特性.
主要方法:
- 在MLGT上应用了四种固定技术:热空气滚筒,微波,白色和蒸汽.
- 使用DPPH和FRAP试验评估了抗氧化能力.
- 量化了非挥发性化合物 (自由氨基酸,茶叶多,可溶糖,黄类,类) 的含量.
- 使用头空间固相微提取与气色谱质谱学 (HS-SPME-GC-MS) 结合,分析了挥发性资料.
- 使用相对气味活性值 (rOAV) 识别了气味活性化合物.
- 在预测 (VIP) 中具有可变重要性的部分最小平方区分分析 (PLS-DA) 用于识别差异性波动.
主要成果:
- 微波处理的MLGT表现出最高水平的关键非挥发性化合物和抗氧化能力.
- 总共确定了1025种挥发性化合物,其中化物是最丰富的;热空气滚筒加工产生了最高的总芳香化合物含量.
- 贡献花,大豆,脂肪和绿色音调的关键气味活性化合物在白色MLGT中最不丰富.
- 微波加工的MLGT显示了最高的可取香味度 (甜味,果味,坚果,木质,草本),而漂白的MLGT则具有最低的不愉快音符 (绿色,辛,脂肪).
结论:
- 建议在MLGT加工中使用微波和漂白固定方法,以增强风味和健康益处.
- 该研究为优化固定技术以提高MLGT质量提供了理论基础.
- 进一步的研究可以利用这些发现来开发更优质的MLGT产品.
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