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三醣

三醣(英語:Trisaccharide)是由三個單醣分子通過兩個醣苷鍵連接所組成的寡醣。如同雙醣,三醣中的醣苷鍵可以由單醣分子上的任何氫氧基形成,所以即使合成三醣的三個單醣是同一種(如葡萄糖),若形成醣苷鍵的位置不同,所形成的三醣也會有著不同的物理與化學特性。[1][2]

典型的三醣

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三醣 首糖單位 醣苷鍵形式 中間糖單位 醣苷鍵形式 末糖單位
異麥芽三糖(Isomaltotriose) 葡萄糖 α(1→6) 葡萄糖 α(1→6) 葡萄糖
潘糖(Panose) 葡萄糖 α(1→6) 葡萄糖 α(1→4) 葡萄糖
黑麴黴三糖(Nigerotriose) 葡萄糖 α(1→3) 葡萄糖 α(1→3) 葡萄糖
麥芽三糖(Maltotriose) 葡萄糖 α(1→4) 葡萄糖 α(1→4) 葡萄糖
松三糖(Melezitose) 葡萄糖 α(1→2) 果糖 α(1→3) 葡萄糖
麥芽三酮糖(Maltotriulose) 葡萄糖 α(1→4) 葡萄糖 α(1→4) 果糖
棉子糖(Raffinose) 半乳糖 α(1→6) 葡萄糖 β(1→2) 果糖
蔗果三糖(Kestose) 葡萄糖 α(1↔2) 果糖 β(1←2) 果糖

参考资料

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  1. ^ Nelson, David L. Lehninger principles of biochemistry. Michael M. Cox, Aaron A. Hoskins 8th. New York, NY. 2021. ISBN 978-1-319-22800-2. OCLC 1243000176. 
  2. ^ Berg, Jeremy M. Biochemistry. John L. Tymoczko, Gregory J., Jr. Gatto, Lubert Stryer 9th. New York. 2019. ISBN 978-1-319-11467-1. OCLC 1037810557. 
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三醣
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