Time of Naringin Production in Grapefruit1
Time of Naringin Production in Grapefruit1
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DOI：
10.21273/jashs.94.6.605
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发表时间：
1969-11
影响因子：
1.9
通讯作者：
R. F. Albach;Amelia T. Juarez;B. J. Lime
中科院分区：
文献类型：
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作者：
R. F. Albach;Amelia T. Juarez;B. J. Lime
从几个季节进行的实验中发现，柚子中的柚苷生产主要发生在果实发育的早期阶段。在最权威的研究中，发育中的葡萄柚和邻近的叶子在坐果后每周暴露于14 C标记的二氧化碳中。在不同的处理时间的固定和可用于转换的CO2的相对量，通过测量14 C活性的可溶性碳水化合物和有机酸部分的水果。在柚皮素鼠李糖苷级分中也进行了活性跟踪。对于从4月初到11月中旬进行的暴露，二氧化碳掺入糖酸的变化不超过10倍。柚皮素鼠李糖苷组分与糖酸组分的活性比在4月中旬达到显著的最大值，然后在6月中旬迅速下降至峰值的1/3000。统一的低比例纳入柚皮素鼠李糖葡萄糖苷馏分保持早熟（10月）。初步证据表明，柚苷产量随后的小幅上升可能与快速营养生长期相吻合。
From experiments conducted over several seasons it was found that naringin production in grapefruit takes place mainly during the early stages of fruit development. In the most definitive study, developing grapefruit and adjacent leaves were exposed to 14C labeled carbon dioxide at weekly intervals following fruit set. The relative amount of CO2 fixed and available for conversion at different treatment times was determined by measuring the 14C activity in the soluble carbohydrate and organic acid fraction of the fruit. Activity was also followed in the naringenin rhamnoglucoside fraction. Carbon dioxide incorporation into the sugar-acids did not vary by greater than a factor of 10 for those exposures conducted from early April to mid-November. The ratio of activity in the naringenin rhamnoglucoside fraction to that in the sugar-acid fraction reached a pronounced maximum in mid-April and then declined rapidly by mid-June to 1/3000 of the peak value. A uniformly low ratio of incorporation into the naringenin rhamnoglucoside fraction is maintained to early maturity (October). Preliminary evidence suggests that minor subsequent rises in naringin production may coincide with periods of rapid vegetative growth.