Characterization of a Metal-Chelating Substance in Coffee
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概要
- 論文の詳細を見る
A metal-chelating substance in brewed coffee was separated and characterized by its chemical structure. This substance was a brown polymer. The contents of sugars, amino acids and phenolics in the substance were evaluated. This polymer contained small amounts of sugars and amino acids in its partial structure. After being decomposed by alkaline fusion, the decomposition products were identified by HPLC and GC–MS. Several phenolics were detected in the decomposed products. To characterize this substance, various types of model compounds were prepared by roasting chlorogenic acid, sucrose, and (or) protein with cellulose powder. Among these model compounds, the polymer-forming ability was highest in the model prepared from all four of materials, but the metal-chelating ability was the highest in the model prepared from chlorogenic acid and cellulose. These results suggest that this metal-chelating substance was a melanoidin-like polymer formed by the decomposition and polymerization of sugars, amino acids and phenolics.
- 社団法人 日本農芸化学会の論文
- 2005-01-23
著者
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Takenaka Makiko
Department Of Nutrition And Food Science Ochanomizu University
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SATO Naoko
Department of Radiopharmacy, Tohoku Pharmaceutical University
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MURATA Masatsune
Department of Nutrition and Food Science, Ochanomizu University
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HOMMA Seiichi
Department of Nutrition and Food Science, Ochanomizu University
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ASAKAWA Hiromi
Department of Nutrition and Food Science, Ochanomizu University
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WEN Xu
Department of Nutrition and Food Science, Ochanomizu University
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Wen Xu
Department Of Nutrition And Food Science Ochanomizu University
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Homma S
Department Of Nutrition And Food Science Ochanomizu University
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Homma Seiichi
Department Of Nutrition & Food Science Ochanomizu University
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Asakawa Hiromi
Department Of Nutrition And Food Science Ochanomizu University
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Sato Naoko
Department Of Obstetrics And Gynecology Tohoku University Graduate School Of Medicine
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Sato Naoko
Department Of Nutrition And Food Science Ochanomizu University
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Sato Naoko
Department Of Applied Chemistry School Of Engineering The University Of Tokyo And Crest Japan Scienc
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Murata Masatsune
Department Of Nutrition & Food Science Ochanomizu University
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HOMMA Seiichi
Department of Bioscience, Tokyo University of Agriculture
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