Effect on the Epigallocatechin Gallate/Epigallocatechin Ratio in a Green Tea (Camellia sinensis L.) Extract of Different Extraction Temperatures and Its Effect on IgA Production in Mice
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概要
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We found that the epigallocatechin gallate (EGCG)/epigallocatechin (EGC) ratio in a green tea (Camellia sinensis L.) extract was affected by the extraction temperature. The EGCG/EGC ratio in the 4 °C extract was around 1:3-4, whereas in the 100 °C extract, it was around 1:0.7. Oral administration of the mixture with a high EGC ratio (1:2-3 = EGCG/EGC) resulted in greater IgA production by murine Peyer’s patch cells.
- 社団法人 日本農芸化学会の論文
著者
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EMA Kaori
National Institute of Vegetable and Tea Sciences, National Agriculture and Food Research Organizatio
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MONOBE Manami
National Institute of Vegetable and Tea Sciences, National Agriculture and Food Research Organizatio
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Tokuda Yoshiko
National Institute of Vegetable and Tea Science, NARO
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MAEDA-YAMAMOTO Mari
National Institute of Vegetable and Tea Science, NARO
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