書誌事項
- タイトル別名
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- A simple preparative chromatographic separation of green tea catechins.
- カラム クロマトグラフィ ニ ヨル チャ カテキンルイ ノ カンイ ナ ブンリ
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抄録
A simple separation method was developed for tea catechins by using Sephadex LH-20 column chromatography and preparative HPLC. A sample green tea solution was prepared with boiling water. From the sample solution, crude catechin A mixture and B mixture were efficiently separated by stepwies chromatography on Sephadex LH-20 with aqueous acetone. The A mixture contained free-type catechins [(-)-epicatechin (EC) and (-)-epigallocatechin (EGC)], and B mixture contained ester-type catechins [(-)-epicatechingal-late (ECg) and (-)-epigallocatechingallate (EGCg)]. ECg and EGCg of B mixture were separated simply on CAPCELL PAK C18 with 25% methanol (v/v) by preparative HPLC. The purity of ECg and EGCg powder finally obtained was about 95% and 92%, respectively.
収録刊行物
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- 日本農芸化学会誌
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日本農芸化学会誌 63 (4), 845-847, 1989
公益社団法人 日本農芸化学会
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詳細情報 詳細情報について
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- CRID
- 1390282679484106112
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- NII論文ID
- 130001228721
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- NII書誌ID
- AN00196191
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- COI
- 1:CAS:528:DyaL1MXktVKhsrY%3D
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- ISSN
- 18836844
- 00021407
- http://id.crossref.org/issn/00021407
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- NDL書誌ID
- 3235422
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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
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- 抄録ライセンスフラグ
- 使用不可