Identification of a sucrose diester of a substituted β-truxinic acid in oats
2001; Elsevier BV; Volume: 56; Issue: 8 Linguagem: Inglês
10.1016/s0031-9422(00)00505-7
ISSN1873-3700
AutoresLena H. Dimberg, Rolf E. Andersson, Suresh Gohil, Susanne Bryngelsson, Lennart Lundgren,
Tópico(s)Food composition and properties
ResumoA novel compound, 4,4'-dihydroxy-3,3'-dimethoxy-beta-truxinic acid esterified to sucrose through the fructosyl 3-and 6-carbons (1), was isolated from oat grains (Avena sativa L.). Its structure was determined by a combination of mass spectrometry and 1-D and 2-D NMR. The amounts of 1 in groats of six different oat cultivars ranged from 101 to 150 microg g(-1) (dry wt). None was detected in the hulls. The free diacid, 4,4'-dihydroxy-3,3'-dimethoxy-beta-truxinic acid (2), could not be detected in groats nor in hulls.
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