溶剂类型对粗腰果果仁液中总酚、类黄酮含量及防晒系数的影响

Kadango Zombe, J. Nyirenda, Agape Lumai, Hellen Phiri
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引用次数: 5

摘要

腰果果液体(CNSL)是一种廉价的天然酚类化合物,有许多应用。这些酚类化合物具有发色团的化学结构,类似于商业防晒产品(ssp)中合成化学紫外线过滤器中发现的发色团。因此,本研究考察了溶剂对粗CNSL产率、总酚含量(TPC)、总黄酮含量(TFC)和防晒系数(SPF)的影响。产率范围为(30.4±0.7% ~ 49.3±3.2%);己烷的产率最低,乙醇的产率最高。丙酮(101.2±2.5 mg GA/g)、甲醇(99.5±0.10)和氯仿(95.4±3.7 mg GAE/g)的TPC最高,己烷(33.3±0.7 mg QE/g)的TFC最高。SPFs范围为(22.1±1.1 ~ 16.4±0.8),氯仿(22.1±1.1)、丙酮(21.5±1.1)、甲醇(19.3±1.0)分别最高,己烷(16.4±0.8)最低。结果表明,提取溶剂对CNSL的得率和SPF有显著影响。因此,我们建议丙酮、氯仿和甲醇单独或混合作为提取CNSL的最佳溶剂,具有良好的TPC和SPF。
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Impact of Solvent Type on Total Phenol and Flavonoid Content and Sun Protection Factor of Crude Cashew Nutshell Liquid
Cashew nutshell liquid (CNSL) is a cheap source of natural phenolic compounds that have numerous applications. These phenolic compounds have chemical structures with chromophores similar to those found in synthetic chemical UV-filters, which are present in commercial sunscreen products (SSPs). Thus, this study investigated the impact of solvents on the yield, total phenol content (TPC), total flavonoid content (TFC), and the sun protection factor (SPF) of crude CNSL. The percent yield ranged from (30.4 ± 0.7% to 49.3 ± 3.2%); hexane recorded the lowest yield, while ethanol recorded the highest. Acetone (101.2 ± 2.5 mg GA/g), methanol (99.5 ± 0.10), and chloroform (95.4 ± 3.7 mg GAE/g), recorded the highest TPC respectively, while hexane (33.3 ± 0.7 mg QE/g) recorded the highest TFC. The SPFs ranged from (22.1 ± 1.1 to 16.4 ± 0.8), chloroform (22.1 ± 1.1), acetone (21.5 ± 1.1), and methanol (19.3 ± 1.0) again recorded the highest values respectively, while hexane (16.4 ± 0.8) recorded the lowest. Our results revealed that extracting solvents has a significant impact on the yield and SPF of CNSL. Therefore, we propose that acetone, chloroform, and methanol, either alone or as mixtures, could be the best solvents for extracting CNSL with a good TPC and SPF.
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