Abstract
Chinese olive (Canarium album (Lour.) Raeusch) is a subtropical fruit, which has been used in traditional Chinese medicine since ancient age. In the present work, the structural characteristics of oligosaccharides from C. album fruit (OCAF) fleshes were investigated. By gas chromatography analysis, both OCAF and free sugar fractions comprised fructose, glucose, and galactose, and the molar percentages varied between cultivars. Moreover, galactose was found to be the dominant monosaccharide in OCAF, while glucose was the dominant one in free sugar fraction. The glycosidic linkages of OCAF were →6)-Gal-(1→, →6)-Glu-(1→, →4)-Fru-(2→, and →1)-Gal. Hierarchical cluster dendrogram indicated that oligosaccharides of “XZ” and “HP” cultivars had a greater proximity than the others, while the oligosaccharides of “TS” cultivar had the most significant difference to the other cultivars. The growth-stimulating effect of OCAF on Lactobacillus bulgaricus and Streptococcus thermophilus was observed to vary in a dose-dependent manner.
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