Welcome to Journal of Tea Science,Today is

Journal of Tea Science ›› 2023, Vol. 43 ›› Issue (1): 78-90.doi: 10.13305/j.cnki.jts.2023.01.006

• Research Paper • Previous Articles     Next Articles

Effect of Pile-up Processing Duration on Flavor Quality of White Tea

WU Shaoling1,2, WANG Zhihui1,2, SHANG Hu1,2, ZHU Chensong3, YE Tingting3, SUN Weijiang1,2,*   

  1. 1. College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    2. Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    3. Fujian Ximing Tea Industrial Company Limited, Fuzhou 350004, China
  • Received:2022-09-20 Revised:2022-11-22 Online:2023-02-15 Published:2023-03-01

Abstract: The effects of different pile up durations on the flavor quality of white tea were investigated based on sensory evaluation and biochemical analysis, in which the white tea with different pile-up processing durations were used as the experimental materials. The results of biochemical analysis show that with the increase of the pile-up processing duration, the flavor of the bitterness and astringency first weakened and then strengthened, the sweetness first increased and then decreased, and mellow gradually increased. In addition, and the sweet and floral increased. The contents of tea polyphenols, flavonoids, soluble sugar, catechins, free amino acids were the main reasons for the taste difference. The contents of cis-linalool oxide (furanoid), trans-linalool oxide (furanoid), α-terpineol, decanal, β-cyclocitral, geranylacetone, β-ionone and octanal were the key factors affecting the difference of aroma. Under different pile-up processing durations, piling-up for 12 d had the best flavor quality, which was conducive to increasing the contents of free amino acids, soluble sugar and catechins, while decreasing the bitter taste index, and increasing the contents of trans-linalool oxide (furanoid), decanal, β-cyclocitral, geranylacetone, β-ionone, promoted floral and sweet fragrance of white tea. Our study provided reference for the optimization of white tea pile-up process and the improvement of flavor quality of white tea.

Key words: white tea, pile-up processing duration, flavor

CLC Number: