Determination of L-Ascorbic acid, tocopherol, carotene and chlorophyll in various teas.
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- KITADA Yoshimi
- Nara Prefeturural Institute of Public Health
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- TAMASE Kikuo
- Nara Prefeturural Institute of Public Health
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- SASAKI Michiko
- Nara Prefeturural Institute of Public Health
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- YAMAZOE Yutaka
- Nara Prefeturural Institute of Public Health
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- MAEDA Yumie
- Shizuoka Prefectural Institute of Public Health and Environmental Science
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- YAMAMOTO Masatoshi
- Shizuoka Prefectural Institute of Public Health and Environmental Science
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- YONETANI Tsutomu
- Tea Branch, Nara Prefectural Agricultural Experimnental Station
Bibliographic Information
- Other Title
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- 各種茶に含まれるL‐アスコルビン酸,トコフェロール,カロチン,クロロフィルについて
Abstract
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.
Journal
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- NIPPON SHOKUHIN KOGYO GAKKAISHI
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NIPPON SHOKUHIN KOGYO GAKKAISHI 36 (11), 927-933, 1989
Japanese Society for Food Science and Technology
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Details 詳細情報について
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- CRID
- 1390282681382966528
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- NII Article 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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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed