Enhancement of antioxidant activity of green tea epicatechins in β-cyclodextrin cavity: Single-crystal X-ray analysis, DFT calculation and DPPH assay
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- 作者：Thammarat Areea ; athammar@chula.ac.th" class="auth_mail" title="E-mail the corresponding author ; thammarat.aree@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Suchada Jongrungruangchokb
- 关键词：β-Cyclodextrin (PubChem CID ; 444041) ; (&ndash ; )-Epicatechin (PubChem CID ; 72276) ; (&ndash ; )-Epigallocatechin (PubChem CID ; 72277) ; (&ndash ; )-Epicatechin gallate (PubChem CID ; 107905) ; (&ndash ; )-Epigallocatechin gallate (PubChem CID ; 65064) ; DPPH (PubChem CID ; 2735032) ; Ethanol (PubChem CID ; 702)
- 刊名：Carbohydrate Polymers
- 出版年：2016
- 出版时间：20 October 2016
- 年：2016
- 卷：151
- 期：Complete
- 页码：1139-1151
- 全文大小：3244 K
文摘
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The study aims at a deep insight into the structure–antioxidant activity relationship.
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X-ray analysis of β-CD inclusion complexes with four major green tea epicatechins.
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Structure of the β-CD–EGCG complex is deduced from a full-geometry DFT optimization.
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Elevated activity is attributed to a common host–guest stabilization scheme.
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The DPPH scavenging activity order is β-CD–EGCG > β-CD–ECG > β-CD–EGC ≈ β-CD–EC.