White tea year discrimination method taking S-linalool and R/S-dihydroactinidiolide as markers

Abstract

The invention discloses a white tea year discrimination method taking S-linalool and R / S-dihydroactinidiolide as markers and belongs to the technical field of tea discrimination. The method is characterized by comprising steps of takingpekoe silver needles, white peony and longevity eyebrows are used as white tea samples, establishing a linear regression equation of the contents of the S-linalool,the R-dihydroactinidiolide and the S-dihydroactinidiolide and the storage year, calculating an error reference value, substituting the measured contents of the S-linalool, the R-dihydroactinidiolideand the S-dihydroactinidiolide into the linear regression equation, and combining an error reference value to obtain an annual predicted value of the white tea sample. The method is advantaged in thatthe true judgment rate of the pekoe silver needle, the white peony and the longevity eyebrow tea in the actual year is high, and the three linear regression models are reliable.

Description

technical field [0001] The invention belongs to the technical field of tea identification, and in particular relates to a white tea age identification method using S-linalool and R / S-dihydroactinolactone as markers. Background technique [0002] White tea belongs to one of the six traditional Chinese teas. According to the difference in tenderness of fresh leaves, white tea can be divided into Baihao Yinzhen (single bud), Baimudan (one bud and one leaf or two leaves) and Shoumei (one bud More than three leaves or only leaves), and other varieties with different colors and flavors, have their own characteristics in flavor and quality, and have been loved and concerned by different consumer groups. White tea is resistant to storage and has similar storage value to black tea. White tea stored for a certain number of years not only has a unique charm, but also has more prominent health benefits. Aged white tea is known as "one-year tea, three-year medicine, and seven-year treas...

AI Technical Summary

Problems solved by technology

Sensory evaluation technology has high requirements for reviewers, who need to have sufficient review experience and keen sensory judgment ability, and cannot operate in batches; on the other hand, although Xinchen white tea has certain differences in flavor quality degree, but the degree of difference cannot be quantified, and it is difficult to accurately judge its storage year through sensory evaluation methods; in addition, the evaluation results are also deeply affected by external objective factors (such as temperature, humidity, light, psychological effects, etc.), so sensory evaluation techniques It has great limitations in distinguishing the age of white tea

This limitation has brought business opportunities to some unscrupulous traders. Driven by profit, they shoddy new white tea, or used low-year white tea to pretend to be old white tea, thereby reaping huge profits and seriously disrupting the market. order, which restricts the healthy development of the white tea industry

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