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Characterization of acylmono‐, mono‐, di‐, tri‐ and tetraglycosylsterol and saponin in Adzuki bean ( Vigna angularis ) seeds
Author(s) -
Kojima Michiyuki,
Ohnishi Masao,
Ito Seisuke,
Fujino Yasuhiko
Publication year - 1989
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02535758
Subject(s) - saponin , vigna , stigmasterol , chemistry , sugar , food science , biology , botany , chromatography , medicine , alternative medicine , pathology
Abstract Five sterylglycosides (acylmono‐, mono‐, di tri‐ and tetraglycosylsterol) and a saponin were isolated from Adzuki beans and characterized. In the glycosylsterols, the principal component sterols were sitosterol and stigmasterol; the major sugar component was glucose. The glucose units were shown to be linked by β1,6‐bonds. The three oligoglycosylsterols were shown to be gentiobiosylsterol, gentiotriosylsterol and gentiotetraosylsterol; the latter two are novel sterylglycosides. The saponin was identified as glucopyranosyl‐(β1→2)‐glucopyranurosyl‐(β1→3′)‐soyasapogenol B (Azukisaponin I) which had previously been found in Adzuki beans.