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中国精品科技期刊2020
王亚防,李彦奇,宋慕波,等. 不同加工工艺初夏福鼎大白白茶感官及品质成分分析J. 食品工业科技,2026,47(5):1−10. doi: 10.13386/j.issn1002-0306.2025090009.
引用本文: 王亚防,李彦奇,宋慕波,等. 不同加工工艺初夏福鼎大白白茶感官及品质成分分析J. 食品工业科技,2026,47(5):1−10. doi: 10.13386/j.issn1002-0306.2025090009.
WANG Yafang, LI Yanqi, SONG Mubo, et al. Effects of Different Processing Techniques on Sensory Profile and Key Biochemical Constituents of Early-Summer Fuding Da Bai White TeaJ. Science and Technology of Food Industry, 2026, 47(5): 1−10. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2025090009.
Citation: WANG Yafang, LI Yanqi, SONG Mubo, et al. Effects of Different Processing Techniques on Sensory Profile and Key Biochemical Constituents of Early-Summer Fuding Da Bai White TeaJ. Science and Technology of Food Industry, 2026, 47(5): 1−10. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2025090009.

不同加工工艺初夏福鼎大白白茶感官及品质成分分析

Effects of Different Processing Techniques on Sensory Profile and Key Biochemical Constituents of Early-Summer Fuding Da Bai White Tea

  • 摘要: 为提高初夏白茶的品质,进一步优化其加工工艺,探究不同工艺白茶品质及其物质基础。本研究以福鼎大白品种初夏一芽二叶鲜叶为原料,在传统工艺室内萎凋和复式萎凋的基础上,分别增添轻揉和摇青工艺处理。通过对成品茶进行感官品质审评、主要生化成分含量测定,并结合顶空固相微萃取-气相色谱-质谱联用技术分析其挥发性香气成分,以探究不同工艺的影响。感官审评表明,经过轻揉和摇青的白茶香气更清高持久,滋味更甘醇爽口,综合感官品质更佳。生化成分测定表明,轻揉与摇青处理的白茶,水浸出物含量分别为32.19%和34.56%,可溶性糖含量分别为4.75%和4.61%,均显著高于萎凋白茶(P<0.05)。香气组分分析共检测出1172种成分,包含408种同分异构体。根据化合物主要官能团的不同,检测到的香气成分可分为15大类,其中萜类、酯类、酮类、醇类化合物占比最多。基于相对气味活性值分析,二氢-2-甲基-3(2H)-呋喃酮、(E)-β-大马酮、(E,Z)-2,6-壬二烯醛、(E)-2-己烯醛、4-羟基-2,5-二甲基-3(2H)-呋喃酮等物质是关键香气成分。研究表明,轻揉与摇青工艺能有效改善初夏白茶的感官品质并显著提升其关键理化成分含量,为初夏白茶的品质精准调控与加工工艺创新提供理论依据和数据支撑。

     

    Abstract: To improve the quality of early-summer white tea, further optimize its processing technology, and explore the quality and material basis of white tea processed with different techniques.This study used fresh leaves of the 'Fuding Dabai' cultivar, harvested at the stage of one bud and two leaves, as raw materials. Based on the traditional indoor withering and combined indoor-outdoor withering, light-rolling and shaking-green treatments were introduced, respectively. Through sensory evaluation, major biochemical analyses, and determination of volatile aroma components via headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry (HS-SPME-GC-MS), the influence of different processing techniques on the finished tea was investigated. The sensory evaluation results indicated that the white teas processed with light-rolling and shaking-green exhibited a more refreshing, pronounced, and lasting aroma, along with a sweeter and more pleasant taste, and consequently, a superior overall sensory quality. The analysis of biochemical components demonstrated that the water extract contents of the light-rolled and shaking-greened teas were 32.19% and 34.56%, respectively, and the soluble sugar contents were 4.75% and 4.61%, respectively, both of which were significantly higher than those of the traditionally withered tea (P<0.05). The analysis of aroma components led to the detection of 1172 compounds in total, which included 408 isomers. Based on the differences in their primary functional groups, the detected aroma components were classified into 15 major categories, with terpenoids, esters, ketones, and alcohols being the most abundant. Relative odor activity value (ROAV) analysis identified dihydro-2-methyl-3(2H)-furanone, (E)-β-damascone, (E,Z)-2,6-nonadienal, (E)-2-hexenal, and 4-hydroxy-2,5-dimethyl-3(2H)-furanone as key aroma compounds. The findings demonstrate that light-rolling and shaking-green are effective techniques for enhancing the sensory and physicochemical properties of early-summer white tea. This study provides critical data and a theoretical foundation for innovating processing techniques and achieving precise quality management.

     

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