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논문 기본 정보

자료유형
학술저널
저자정보
Won Jeong Lee (Catholic University of Daegu) Sang Won Choi (Catholic University of Daegu)
저널정보
한국식품영양과학회 Preventive Nutrition and Food Science Preventive Nutrition and Food Science Vol.17 No.4
발행연도
2012.12
수록면
280 - 285 (6page)

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초록· 키워드

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Six polyphenolic compounds, such as chlorogenic acid (CA), rutin (RT), isoquercitrin (IQT), quercetin-3-O-(6-O-malonyl)-β-D-glucoside (QMG), astragalin (AG), kaempferol-3-O-(6-O-malonyl)-β-D-glucoside (KMG), were isolated from mulberry leaves by a series of isolation procedures, such as Diaion HP-20, silica-gel, Sephadex LH-20, and ODS-A column chromatographies. The chemical structures of the phenolic compounds were identified by UV and NMR spectral analyses. Levels of polyphenols in mulberry leaves from six different mulberry cultivars ranged from 1,042.16 to 1,871.97 mg% per dry weight; Guksang cultivar showed the highest levels of polyphenols, whereas Gaeryangdaehwa contained the least polyphenol contents. Generally, levels of polyphenols in mulberry leaves decreased with increasing harvest time, except for Yoolmok, but increased with heat processing time, except QMG and KMG. These results suggest that the heat processed mulberry leaves of Guksang cultivar harvested in early May can be potentially useful sources for production of high quality mulberry leaf teas.

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Abstract
INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSION
ACKNOWLEDGMENTS
REFERENCES

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