التفاصيل البيبلوغرافية
| العنوان: |
Improving the Tea Withering Process Using Ethylene or UV‑C |
| المؤلفون: |
Emma R. Collings (11655008), M. Carmen Alamar (11630362), Maria Bogaerts Márquez (11655011), Sofia Kourmpetli (7637993), Zoltan Kevei (11655014), Andrew J. Thompson (355529), Fady Mohareb (4165885), Leon A. Terry (2249401) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Cell Biology, Genetics, Molecular Biology, Physiology, Pharmacology, Ecology, Developmental Biology, Plant Biology, Space Science, Chemical Sciences not elsewhere classified, upregulated transcripts associated, tea shoots subjected, tea manufacturing process, polyphenol oxidases (<, 30 %) compared, c could enhance, 25 ° c, withering could shorten, 2 – 4, peroxidases (<, 40 %), c irradiation, theaflavin digallate, simulated withering, related compounds, rapid change, px6 <, px4 < |
| الوصف: |
Using a combination of biochemical, transcriptomic, and physiological analyses, we elucidated the mechanisms of physical and chemical withering of tea shoots subjected to UV-C and ethylene treatments. UV-C irradiation (15 kJ m –2 ) initiated oxidation of catechins into theaflavins, increasing theaflavin-3-monogallate and theaflavin digallate by 5- and 13.2–4.4-fold, respectively, at the end of withering. Concomitantly, a rapid change to brown/red, an increase in electrolyte leakage, and the upregulation of peroxidases ( viz. Px2 , Px4 , and Px6 ) and polyphenol oxidases ( PPO-1 ) occurred. Exogenous ethylene significantly increased the metabolic rate (40%) and moisture loss (30%) compared to control during simulated withering (12 h at 25 °C) and upregulated transcripts associated with responses to dehydration and abiotic stress, such as those in the ethylene signaling pathway ( viz. EIN4-like , EIN3-FBox1 , and ERFs ). Incorporating ethylene during withering could shorten the tea manufacturing process, while UV-C could enhance the accumulation of flavor-related compounds. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/Improving_the_Tea_Withering_Process_Using_Ethylene_or_UV_C/16942640 |
| DOI: |
10.1021/acs.jafc.1c02876.s001 |
| الاتاحة: |
https://doi.org/10.1021/acs.jafc.1c02876.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.D7A73149 |
| قاعدة البيانات: |
BASE |