Biochemical Components and in Vitro Antioxidant Activities of Large-leaf Species Tea Flowers in Yunnan
In this paper, the chemical components and in vitro antioxidant activities of Camellia sinensis, a large-leaf species in Yunnan were studied. The main biochemical indicators of 13 Yunnan large-leaf tea tree flowers and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging ability, 2,2'-a...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
The editorial department of Science and Technology of Food Industry
2022-08-01
|
| Series: | Shipin gongye ke-ji |
| Subjects: | |
| Online Access: | http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2021110135 |
| _version_ | 1811224645558337536 |
|---|---|
| author | Mengnan SHI Yun PENG Jie ZHANG Changyun XIONG |
| author_facet | Mengnan SHI Yun PENG Jie ZHANG Changyun XIONG |
| author_sort | Mengnan SHI |
| collection | DOAJ |
| description | In this paper, the chemical components and in vitro antioxidant activities of Camellia sinensis, a large-leaf species in Yunnan were studied. The main biochemical indicators of 13 Yunnan large-leaf tea tree flowers and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging ability, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) free radical scavenging capacity, total antioxidant capacity (TAC), hydroxyl radical (·OH) scavenging capacity, superoxide anion scavenging capacity, five kinds of in vitro antioxidant indexes were measured. The correlation between the main biochemical components and in vitro antioxidant indexes was analyzed. The results showed that the contents of tea tree flower water extract, tea polyphenols and amino acids were 41.22%~63.73%, 7.74%~13.56%, 1.61%~5.91%, respectively. The contents of caffeine and flavonoids were 4.98~8.46, 4.21~8.63 mg/g, respectively. Each sample showed a certain difference. There were significant differences in the in vitro antioxidant capacity of different tea tree flower samples (P<0.05). Among them, the ancient tea tree flowers of Dijie, Bulang Mountain, and Bingdao showed good antioxidant activities, while the ancient tea flowers of Yangta white tea were the weakest. The antioxidant activity of tea tree flowers in vitro was correlated with biochemical indicators, tea polyphenols were significantly correlated with total antioxidant capacity (P<0.01), epigallocatechin gallate (EGCG), epicatechin gallate Epicatechin gallate (ECG) was significantly correlated with total antioxidant capacity (P<0.05), and the results could be used as an important indicator to predict the antioxidant activity of tea flowers. |
| first_indexed | 2024-04-12T08:51:24Z |
| format | Article |
| id | doaj.art-2f93c862bf634a41a3431ad425eaa13f |
| institution | Directory Open Access Journal |
| issn | 1002-0306 |
| language | zho |
| last_indexed | 2024-04-12T08:51:24Z |
| publishDate | 2022-08-01 |
| publisher | The editorial department of Science and Technology of Food Industry |
| record_format | Article |
| series | Shipin gongye ke-ji |
| spelling | doaj.art-2f93c862bf634a41a3431ad425eaa13f2022-12-22T03:39:33ZzhoThe editorial department of Science and Technology of Food IndustryShipin gongye ke-ji1002-03062022-08-01431629830610.13386/j.issn1002-0306.20211101352021110135-16Biochemical Components and in Vitro Antioxidant Activities of Large-leaf Species Tea Flowers in YunnanMengnan SHI0Yun PENG1Jie ZHANG2Changyun XIONG3College of Tea, Yunnan Agricultural University, Kunming 650000, ChinaYibin Tea Research Institute, Yibin 644000, ChinaCollege of Tea, Yunnan Agricultural University, Kunming 650000, ChinaCollege of Tea, Yunnan Agricultural University, Kunming 650000, ChinaIn this paper, the chemical components and in vitro antioxidant activities of Camellia sinensis, a large-leaf species in Yunnan were studied. The main biochemical indicators of 13 Yunnan large-leaf tea tree flowers and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging ability, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) free radical scavenging capacity, total antioxidant capacity (TAC), hydroxyl radical (·OH) scavenging capacity, superoxide anion scavenging capacity, five kinds of in vitro antioxidant indexes were measured. The correlation between the main biochemical components and in vitro antioxidant indexes was analyzed. The results showed that the contents of tea tree flower water extract, tea polyphenols and amino acids were 41.22%~63.73%, 7.74%~13.56%, 1.61%~5.91%, respectively. The contents of caffeine and flavonoids were 4.98~8.46, 4.21~8.63 mg/g, respectively. Each sample showed a certain difference. There were significant differences in the in vitro antioxidant capacity of different tea tree flower samples (P<0.05). Among them, the ancient tea tree flowers of Dijie, Bulang Mountain, and Bingdao showed good antioxidant activities, while the ancient tea flowers of Yangta white tea were the weakest. The antioxidant activity of tea tree flowers in vitro was correlated with biochemical indicators, tea polyphenols were significantly correlated with total antioxidant capacity (P<0.01), epigallocatechin gallate (EGCG), epicatechin gallate Epicatechin gallate (ECG) was significantly correlated with total antioxidant capacity (P<0.05), and the results could be used as an important indicator to predict the antioxidant activity of tea flowers.http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2021110135tea floweryunnan large-leaf speciesbiochemical componentsin vitro antioxidant capacitycorrelation |
| spellingShingle | Mengnan SHI Yun PENG Jie ZHANG Changyun XIONG Biochemical Components and in Vitro Antioxidant Activities of Large-leaf Species Tea Flowers in Yunnan Shipin gongye ke-ji tea flower yunnan large-leaf species biochemical components in vitro antioxidant capacity correlation |
| title | Biochemical Components and in Vitro Antioxidant Activities of Large-leaf Species Tea Flowers in Yunnan |
| title_full | Biochemical Components and in Vitro Antioxidant Activities of Large-leaf Species Tea Flowers in Yunnan |
| title_fullStr | Biochemical Components and in Vitro Antioxidant Activities of Large-leaf Species Tea Flowers in Yunnan |
| title_full_unstemmed | Biochemical Components and in Vitro Antioxidant Activities of Large-leaf Species Tea Flowers in Yunnan |
| title_short | Biochemical Components and in Vitro Antioxidant Activities of Large-leaf Species Tea Flowers in Yunnan |
| title_sort | biochemical components and in vitro antioxidant activities of large leaf species tea flowers in yunnan |
| topic | tea flower yunnan large-leaf species biochemical components in vitro antioxidant capacity correlation |
| url | http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2021110135 |
| work_keys_str_mv | AT mengnanshi biochemicalcomponentsandinvitroantioxidantactivitiesoflargeleafspeciesteaflowersinyunnan AT yunpeng biochemicalcomponentsandinvitroantioxidantactivitiesoflargeleafspeciesteaflowersinyunnan AT jiezhang biochemicalcomponentsandinvitroantioxidantactivitiesoflargeleafspeciesteaflowersinyunnan AT changyunxiong biochemicalcomponentsandinvitroantioxidantactivitiesoflargeleafspeciesteaflowersinyunnan |