在波长和度的影响下,通过测量高灵敏度的光学吸收率来量化草提取物中的甲基素的方法
Mohammed Freha1, Mohammed El-Amine Nouairi2, Ali Bellil3
1Faculty of Exact Sciences, Department of Chemistry, Algeria; Process Engineering and Solution Chemistry Laboratory (LGPCS), Algeria.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|December 22, 2023
概括
使用UV-Vis光谱光度测量,快速量化一种强有力的抗氧化剂 - - 甲基素. 这种方法通过分析草提取物,即使是复杂的混合物,也有助于预防心脏病.
科学领域:
- 分析化学 分析化学
- 生物化学 生物化学
- 食品科学 食品科学 食品科学
背景情况:
- 甲基素是一种重要的抗氧化剂,具有潜在的健康益处,包括预防炎症和冠状动脉心脏病.
- 准确和快速量化catechin对于健康应用至关重要.
- 草提取物呈现出一个复杂的矩阵,挑战精确的甲基素分析.
研究的目的:
- 开发一种快速而精确的方法,用UV-Vis光谱测量测量草提取物中的甲基素.
- 通过考虑波长依赖的灭绝系数,为复杂的混合物适应比尔-兰伯特定律.
- 建立一种可靠的分析方法,以检测各种草提取物中的甲素.
主要方法:
- 紫外线-Vis吸收光谱光度测试被用来量化儿茶素.
- 贝尔-兰伯特定律被重新阐述,以考虑波长依赖的灭绝系数 (ε(λ)).
- 使用稀释技术和分类素-甲醇溶液的光谱分析来确定恒定的激发波长和灭绝系数 (ε0).
主要成果:
- 一个修改的酒-兰伯特定律被提出,结合了波长依赖的灭绝系数.
- 在激发波长稳定在203nm时,确定了极限度.
- 通过对度和激发波长的吸收函数进行线性化,建立了一个半经验关系.
结论:
- 紫外线-Vis光谱摄像法提供了一种可行的方法,用于在草提取物中快速定量catechin.
- 重新制定的酒-兰伯特定律为分析复杂混合物提供了更准确的方法.
- 开发的方法使得可靠的分析可靠的教理素在各种草样本.
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