Effects of Intracellular Distribution of Sugar and Acid at Different Developmental Stages on Sweetness and Sourness of Peach Fruit
JIANG Feng-Chao1,2, WANG Yu-Zhu1,2, SUN Hao-Yuan2, YANG Li2, ZHANG Jun-Huan2, MA Lü-Yi1
1. Academy of Forestry, Beijing Forestry University, Beijing 100083;
2. Institute of Forestry and Pomoloy, Beijing Academy of Agriculture and Forestry Science, Beijing 100093
Abstract:To understand the distribution and changes of sugars and acids in peach fruit during the growing stages, their distribution and concentrations in vacuoles, cytoplasm, and free space in fruits of Prunus persicae‘Hakuho’ at different growing stages were studied by compartmental analysis, and their contribution to fruit sweetness and sourness was assessed. Results showed that the concentration of sugars (sucrose, glucose, fructose and sorbitol) and acids (malate, citrate, quinate and shikimate) in vacuoles, cytoplasm and free space of mature fruits was 27.3, 11.6 and 9.0 mg/g, and 2.09, 0.94 and 0.35 mg/g, respectively, and was 0.97, 2.2 and 2.3 mg/g, and 0.25, 0.44 and 0.82 mg/g in immature fruit, respectively. Sweetness and sourness was less affected by the different distribution of sugar and acid in cells in immature fruit than that in mature fruit. There was an obvious concentration gradient between the vacuoles, cytoplasm and free space for sugars and acids, and the differences in the intracellular distribution of sugar and acid may be responsible for the changes of fruit sweetness.
姜凤超, 王玉柱, 孙浩元, 杨丽, 张俊环, 马履一. 桃果实不同发育时期细胞内糖酸分布对甜酸风味的影响[J]. 植物科学学报, 2014, 32(3): 265-272.
JIANG Feng-Chao, WANG Yu-Zhu, SUN Hao-Yuan, YANG Li, ZHANG Jun-Huan, MA Lü-Yi. Effects of Intracellular Distribution of Sugar and Acid at Different Developmental Stages on Sweetness and Sourness of Peach Fruit. , 2014, 32(3): 265-272.
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