7 甘味ステビオール配糖体の研究 : 甘味と構造との相関及び良質甘味剤の酵素合成(口頭発表の部)
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概要
- 論文の詳細を見る
From leaves of Stevia rebaudiana, the major sweet principle, stevioside(S) has been isolated together with rebaudioside A (RA) and several other minor sweet glycosides (Table 1). From leaves of Rubus suavissimus, the homologuous sweet glycoside, rubusoside (RU) has been isolated(Table 1). A number of more glucosylated compounds were prepared from S, Ru and their derivatives by trans-1,4-α-glucosylation with starch and cyclodextrin-glucosyltransferase (CGTase) (Tables 2,3 and Fig. 1). Evaluation of sweetness of these products revealed that elongation of 13-O-glycosyl moiety (total: 3 or 4 glucosyl units at 13-OH) resulted in remarkable improvement of the sweetness, while compounds with more glucosyl units in this moiety (total: 5 or 6 glucosyl units) exhibited rather worse sweetness. An increase in glucosyl units at the 19-position led to a change in the sweetness for the worse. Selective synthesis of the good sweeteners found in the above study was schieved by using a galactosyl group as a blocker against the transglucosylation with starch and CGTase (Figs. 2, 3).
- 天然有機化合物討論会の論文
- 1989-09-17
著者
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水谷 健二
丸善製薬
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田中 治
広島大
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大谷 和弘
広島大・医
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笠井 良次
広島大・医
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相川 容子
Institute of Pharmaceutical Sciences, Hiroshima University School of Medicine
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藤沢 良志子
Institute of Pharmaceutical Sciences, Hiroshima University School of Medicine
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北畑 寿美雄
大阪市工研
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石川 治
大阪市工研
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笠井 良次
広島大・薬
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水谷 健二
広島大・薬
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大谷 和弘
広島大・薬
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田中 治
広島大・薬
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宮田 武志
広島大・薬
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福永 裕一郎
広島大・薬
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相川 容子
広島大・薬
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中安 規子
広島大・薬
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藤沢 良志子
広島大・薬
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田中 治
Institute Of Pharmaceutical Sciences Hiroshima University School Of Medicine
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相川 容子
Institute Of Pharmaceutical Sciences Hiroshima University School Of Medicine
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藤沢 良志子
Institute Of Pharmaceutical Sciences Hiroshima University School Of Medicine
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