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author:

Liu, Zhibin (Liu, Zhibin.) [1] (Scholars:刘志彬) | Chen, Fuchen (Chen, Fuchen.) [2] | Sun, Jinyuan (Sun, Jinyuan.) [3] | Ni, Li (Ni, Li.) [4] (Scholars:倪莉)

Indexed by:

EI SCIE

Abstract:

Wuyi Rock tea (WRT), a top-ranking oolong tea, possesses characteristic woody, floral, nutty flavor. WRT flavor is mainly formed during the manufacturing process. However, details regarding its formation process are not fully understood yet. In this study, the dynamics of volatile and phenolic components over the whole manufacturing process of WRT were investigated. During withering, despite minor changes in volatile and phenolic components, the central vacuole shrunk remarkably, which reduced the cell mechanical performance and facilitated the subsequent enzymatic fermentation. During fermentation, approximately 78% of flavan-3-ols in fresh tea leaves were oxidized and converted to a diverse mixture of highly heterogeneous oxidation products, such as theaflavins, whereas flavonols, phenolic acids, and xanthine alkaloids remained stable throughout the manufacturing process. Aldehydes, ketones, and heterocyclic compounds, imparting woody, floral, and nutty scent, were mainly formed during the roasting steps. This detailed information can expand our understanding on the formation of WRT flavor.

Keyword:

Dynamic changes Manufacturing process Morphology Phenolic compounds Volatile compounds Wuyi Rock tea

Community:

  • [ 1 ] [Liu, Zhibin]Fuzhou Univ, Inst Food Sci & Technol, 2 Xueyuan Rd, Fuzhou 350108, Peoples R China
  • [ 2 ] [Chen, Fuchen]Fuzhou Univ, Inst Food Sci & Technol, 2 Xueyuan Rd, Fuzhou 350108, Peoples R China
  • [ 3 ] [Ni, Li]Fuzhou Univ, Inst Food Sci & Technol, 2 Xueyuan Rd, Fuzhou 350108, Peoples R China
  • [ 4 ] [Sun, Jinyuan]Beijing Technol & Business Univ, Beijing Lab Food Qual & Safety, Beijing 100048, Peoples R China

Reprint 's Address:

  • 倪莉

    [Sun, Jinyuan]Fuzhou Univ, Inst Food Sci & Technol, 2 Xueyuan Rd, Fuzhou 350108, Peoples R China;;[Ni, Li]Fuzhou Univ, Inst Food Sci & Technol, 2 Xueyuan Rd, Fuzhou 350108, Peoples R China

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Source :

FOOD CHEMISTRY

ISSN: 0308-8146

Year: 2022

Volume: 367

8 . 8

JCR@2022

8 . 5 0 0

JCR@2023

ESI Discipline: AGRICULTURAL SCIENCES;

ESI HC Threshold:48

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 60

SCOPUS Cited Count: 67

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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