控温渥堆对黑毛茶香气品质的影响

doi:10.13305/j.cnki.jts.20220830.001

摘要/Abstract

摘要： 对传统渥堆与45℃、50℃控温渥堆的黑毛茶进行感官品质评价,采用顶空固相微萃取-气相色谱-质谱联用技术（HS-SPME-GC-MS）结合主成分分析法（PCA）和偏最小二乘判别分析法（PLS-DA）对挥发性成分进行比较分析。结果表明,与传统渥堆和50℃控温渥堆相比,45℃控温渥堆黑毛茶香气的愉悦感、纯正度和浓度更好,杂异气味少。在传统及控温渥堆中共获得24种关键性差异挥发性成分,其中α-柏木烯、新植二烯、橄榄醇、δ-杜松醇、香芹酚、2,6-二叔丁基对甲酚、(Z)-7-十六碳烯醛、反式-β-紫罗兰酮等关键性差异挥发性成分在控温渥堆中的相对含量显著高于传统渥堆。研究结果可为改善黑毛茶香气品质提供参考。

关键词: 黑毛茶, 挥发性成分, 控温渥堆, 气相色谱-质谱联用技术

Abstract: Sensory quality evaluation of the primary dark tea under traditional, 45℃, 50℃ controlled pile-fermentation was performed. Meanwhile, volatile components were compared and analyzed by headspace solid phase microextraction and gas chromatography-mass spectrometry (HS-SPME-GC-MS) combined with principal component analysis (PCA) and partial least-squares discrimination analysis (PLS-DA). The results show that compared with traditional and 50℃-controlled pile-fermentation, the primary dark tea under 45℃-controlled pile-fermentation presented better aroma pleasure, purity and concentration. Furthermore, it appeared less impurity odor. A total of 24 key different volatile components were obtained from traditional and temperature-controlled pile-fermentation. The relative contents of α-cedrene, neophytadiene, olivetol, δ-cadinol, carvacrol, 2,6-di-tert-butyl-p-cresol, (Z)-7-hexadecenal, trans-β-ionone were significantly higher under the temperature-controlled pile-fermentation than those under traditional pile-fermentation. The research results could provide basis and reference for improving aroma quality of primary dark tea.

Key words: primary dark tea, volatile components, temperature-controlled pile-fermentation, GC-MS

中图分类号:

S571.1

陈慧, 杨丽玲, 陈金华, 黄建安, 龚雨顺, 李适. 控温渥堆对黑毛茶香气品质的影响[J]. 茶叶科学, 2022, 42(5): 717-730. doi: 10.13305/j.cnki.jts.20220830.001.

CHEN Hui, YANG Liling, CHEN Jinhua, HUANG Jian'an, GONG Yushun, LI Shi. Effect of Temperature-controlled Pile-fermentation on Aroma Quality of Primary Dark Tea[J]. Journal of Tea Science, 2022, 42(5): 717-730. doi: 10.13305/j.cnki.jts.20220830.001.

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