5 resultados
Crocetin is a carotenoid dicarboxylic acid which, in nature, is esterified with glucose or gentiobiose units forming the crocins, abundant components of saffron (a spice with many reputed medicinal uses). We have previously reported that saffron, crocins and crocetin inhibit breast cancer cell
Gentio-oligosaccharides (GnOS) were synthesized by the acceptor reaction of dextransucrase from Leuconostoc mesenteroides NRRL B-1426 with gentiobiose and sucrose. GnOS were purified by gel permeation chromatography using a Bio-Gel P-2 column and identified by mass spectrometry. The purified GnOS
A lectin was purified from the latex of Euphorbia marginata by affinity chromatography on acid-treated Sepharose 6B and elution with lactose. The lectin is a glycoprotein composed of two identical subunits with M(r) 30,000, approx. The haemagglutinating activity of the lectin is not specific for any
A (1--3)-beta-D-glucan branched by O-6 substitution (FCAP), obtained from the cold-alkali extract of the fruiting body of V. volvacea, exhibited potent growth-inhibitory activity against implanted tumors in mice. It contained protein and appeared to be heterogeneous. Fractionation by DEAE-Toyopearl
The structure of high molecular weight laminaran from brown alga Eisenia bicyclis was investigated by chemical and enzymatic methods, NMR spectroscopy and mass spectrometry. The laminaran from E. bicyclis was characterized as 1,3;1,6-β-D-glucan with the high content of 1,6-linked glucose residues