書誌事項
- タイトル別名
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- Determination of Tea Polyphenols in Bottled Japanese Tea Drinks and Differences in Polyphenol Content in Tea Leaves from Different Variety
- アナリティカルレポート リョクチャ インリョウ チュウ ニ フクマレル ポリフェノール ノ テイリョウ ト チャバ ノ シュルイ ニ ヨル ポリフェノール ガンリョウ ノ チガイ
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Many studies have shown that polyphenols in green tea have antioxidant activity, anti-inflammatory effects, and preventive effects against degenerative diseases, such as cardiovascular diseases and neurodegenerative diseases. We determined nine polyphenols (gallic acid, (−)-gallocatechin, (−)-epigallocatechin, ( + )-catechin (C), (−)-epicatechin (EC), (−)-gallocatechin gallate, (−)-epigallocatechin gallate, (−)-catechin gallate (CG), (−)-epicatechin gallate (ECG)), and caffeine in seven commercially available bottled green-tea drinks by semi-micro HPLC. One of the bottled tea drinks contained a small excess of EC, ECG, C, where C and CG represent heat-epimerized from EC and ECG. We determined the polyphenol contents in different green-tea leaves, and then found that the different contents of EC and ECG in the tea leaves can be attributed to different varieties (Zairaishu and Yabukita). Zairaishu contained notably higher EC, ECG, C, and CG.
収録刊行物
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- 分析化学
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分析化学 62 (1), 51-55, 2013
公益社団法人 日本分析化学会
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詳細情報 詳細情報について
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- CRID
- 1390282679637293056
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- NII論文ID
- 10031139091
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- NII書誌ID
- AN00222633
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- COI
- 1:CAS:528:DC%2BC3sXit1alurw%3D
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- NDL書誌ID
- 024250368
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- ISSN
- 05251931
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可