書誌事項
- タイトル別名
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- Determination of L-Ascorbic acid, tocopherol, carotene and chlorophyll in various teas.
抄録
L-Ascorbic aid, tocopherol, carotene and chlorophyll contents of various teas were determined by high performance liquid chromatography. Ascorbic acid was measured on Inertsil ODS-2 with amperometer at+500mV vs Ag/AgC1. Tocopherols were extracted from the sample with hexane and pretreated using florisil mini column, and determined on LiChrosorb NH2 With a flouorescence detection. Carotene and chlorophylls were separated on Zorbax ODS and detected with visible wavelength detector. All kinds of those compounds examined were found much more in sencha than semi-fermented (Oolong) and fermented (Black) teas. The average contents of ascorbic acid, a-tocopherol, a and β-carotene in sencha were 167, 13.5, 3.0 and 40.2mg/100g, respectively. In sencha, carotenes(α+β; X) were correlated With chlorophylls (a+b; Y): Y= 6.73 X-86.5, r=0.912. Those compounds in the solutions decocted from teas by usual way were also determined. These compounds except ascorbic acid did not detected.
収録刊行物
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- 日本食品工業学会誌
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日本食品工業学会誌 36 (11), 927-933, 1989
社団法人 日本食品科学工学会
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詳細情報 詳細情報について
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- CRID
- 1390282681382966528
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- NII論文ID
- 130003788782
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- COI
- 1:CAS:528:DyaK3cXnsFCgsw%3D%3D
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- ISSN
- 00290394
- http://id.crossref.org/issn/00290394
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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
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可