Solubilities of Naringin and Naringenin in Different Solvents and Dissociation Constants of Naringenin

Solubilities of Naringin and Naringenin in Different Solvents and Dissociation Constants of Naringenin
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柚皮苷和柚皮素在不同溶剂中的溶解度及柚皮素的解离常数

DOI:
10.1021/je501004g
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发表时间:
2015-01
影响因子:
--
通讯作者:
Zhang, Jiye
Zhang, Jiye
中科院分区:
工程技术3区
文献类型:
--
作者:
Zhou, Li;Yang, Guangde;Lin, Rong;Zhang, Jiye

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采用紫外分光光度法测定了柚皮苷和柚皮素在甲醇、异丙醇、乙酸乙酯、石油醚、正丁醇和正己烷中的溶解度,最大吸收波长为283和372 nm,温度范围为288.15 ~ 328.15 K。柚皮苷和柚皮素在不同溶剂中的溶解度随温度的升高而增大。柚皮苷在6种溶剂中的溶解度大小顺序为甲醇>乙酸乙酯>正丁醇>异丙醇>石油醚>己烷,在6种溶剂中的溶解度大小顺序为乙酸乙酯>异丙醇>甲醇>正丁醇>石油醚>己烷。在所有选定的溶剂中,由于柚皮素与溶剂的极性更相似,所以柚皮素的溶解度显著高于柚皮苷。采用改进的Apelblat方程模型、理想模型和λH方程模型计算了柚皮苷和柚皮素的溶解度。从溶解度数据来看,溶解焓的变化与溶解度有关。
The solubilities of naringin and naringenin in methanol, isopropanol, ethyl acetate, petroleum ether, n-butanol, and hexane were measured by using UV spectrophotometric methods at the maximum absorption wavelength of (283 and 372) nm from (288.15 to 328.15) K. The solubilities of naringin and naringenin in different solvents increase with an increase of temperature. The solubility of naringin in the six solvents was in the order methanol > ethyl acetate > n-butanol > isopropanol > petroleum ether > hexane, and the solubility of naringenin in these solvents follows the order ethyl acetate > isopropanol > methanol > n-butanol > petroleum ether > hexane. The solubility of naringenin was significantly higher than naringin in all selected solvents because of the more similar polarity of naringenin with solvents. The solubilities of naringin and naringenin are calculated by using the modified Apelblat equation model, ideal model, and the λH equation model. From solubility data, the changes of dissolution enthal...
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