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Detection of Inulin, a Prebiotic Polysaccharide, in Maple Syrup

Author:
Sun, Jiadong, Ma, Hang, Seeram, Navindra P., Rowlery, David C.
Source:
Journal of agricultural and food chemistry 2016 v.64 no.38 pp. 7142-7147
ISSN:
0021-8561
Subject:
Acer, anion exchange chromatography, arabinogalactans, dialysis, ethanol, evaporation, inulin, maple syrup, molecular weight, nuclear magnetic resonance spectroscopy, prebiotics, sap, xylem
Abstract:
Maple syrup is a widely consumed plant-derived natural sweetener produced by concentrating xylem sap collected from certain maple (Acer) species. During thermal evaporation of water, natural phytochemical components are concentrated in maple syrup. The polymeric components from maple syrup were isolated by ethanol precipitation, dialysis, and anion exchange chromatography and structurally characterized by glycosyl composition analysis, glycosyl linkage analysis, and nuclear magnetic resonance spectroscopy. Among the maple syrup polysaccharides, one neutral polysaccharide was characterized as inulin with a broad molecular weight distribution, representing the first isolation of this prebiotic carbohydrate from a xylem sap. In addition, two acidic polysaccharides with structural similarity were identified as arabinogalactans derived from rhamnogalacturonan type I pectic polysaccharides.
Agid:
5510023