Changes in the Molecular Weight Distribution of Cell Wall Polysaccharides during Peach Fruit Ripening and Softening

doi:10.7506/spkx1002-6630-201305003

Abstract

Abstract: In this study, cell wall polysaccharides from peach cultivars ‘Yuhua No. 3’ and ‘Jianayan’ were measured by HPLC to investigate changes in molecular weight distribution during fruit ripening and softening. Both cultivars exhibited a declining trend in the molecular weights of CDTA, Na2CO3 and KOH polysaccharide fractions during fruit ripening and softening, indicating the depolymerization of cell wall polysaccharides and the generation of low molecular weight materials. However, apparent differences in the molecular weights, amounts and time of occurrence of depolymerization were found for the two peach cultivars, suggesting that peach softening can be affected by the pattern of depolymerization of polysaccharides.

Key words: peach, ripening and softening, cell wall polysaccharides, molecular weight

CLC Number:

TS255.1

KAN Juan，WANG He，JIN Chang-hai*. Changes in the Molecular Weight Distribution of Cell Wall Polysaccharides during Peach Fruit Ripening and Softening[J]. FOOD SCIENCE, 2013, 34(5): 10-16.

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