• 作者： 馬英俊 ; 徐鳳麟 ; 蘭淑貞 等
• 作者服務機構： 台北醫學院生物化學系
• 中文摘要： From the acetone extract of fresh betel nuts, two procyanidin pentamers, two procyanidin tetramers and three procyanidin trimers, along with (+)-catechin, (-)- epicatechin, procyanidin A-1, procyanidin B-1, procyanidin B-2, and procyanidin B-7 were isolated. Based on /sup 1/H NMR and /sup 13/C NMR spectral data as well as the results of thiolysis degradation, the chemical structures of two series of oligomeric arecatannins A and B have been established. The arecatannins from betel nuts were found to be condensed-type tannins which possess (-)-epicatechin unit and (+)-catechin units. All arecatannins had C/sub 4/- C/sub 8/ linked (-)-epicatechin in the upper units whereas the (+)-catechin in the terminal unit had C/sub 4/-C/sub 8/ or C/ sub 4/-C/sub 6/ linkage.
• 英文摘要： --
• 中文關鍵字： Betel Nut; Tannin; Acetone Extract
• 英文關鍵字： 蒟醬堅果；單寧；丙酮萃取