类胡萝卜素在癸酸反胶束溶液中的电子吸收光谱特征变化

采集3种类胡萝卜素在癸酸反胶束溶液中的电子吸收光谱，进行特征分析。用四氢呋喃、丙酮和乙醇3种组装助剂分别构建癸酸反胶束溶液，番茄红素（开环碳氢化合物）、β-胡萝卜素（具环碳氢化合物）和玉米黄素（具环羟基化合物）分别溶解在其中后，采集各溶液在300～550 nm波长范围内的电子吸收光谱，分析其特征。结果表明：与3种类胡萝卜素在癸酸中的光谱特征相比，它们在癸酸反胶束溶液中的最大吸收波长（λmax）均有微小位移；具环类胡萝卜素的λmax发生红移，开环胡萝卜素的λmax发生紫移；同时，助剂极性的增强可使三者的吸光系数（A1%1 cm）减小。

Variations in the Electronic Absorption Spectral Characteristics of Carotenoids in Decanoic Acid Reverse Micelle Solvents

This study aimed to analyze the electronic absorption spectral acquisition and characteristics of three carotenoids
in dacanoic acid reverse micelle solvents. In the present study, tetrahydrofuran, acetone and ethanol were selected to
separately construct decanoic acid reverse micelles. After lycopene (acyclic hydrocarbon), β-carotene (cyclic hydrocarbon)
and zeaxanthin (cyclic hydroxyl compound) were dissolved in each solvent, the electronic absorption spectra of the solutions
were acquired over the wavelength range of 300－550 nm. The spectral characteristics were consequently assessed. Data
from these investigations suggested that a slight shift in the maximum absorption wavelength (λmax) of all three carotenoids
were observed in decanoic acid reverse micelle solvents, in comparison with those in decanoic acid. A bathochromic shift
was seen with cyclic carotenoids and a hypsochromic shift was seen with acyclic carotene. Additionally, an increased
polarity of the added organic solvents could result in a reduced absorption coefficient (A1%
1 cm).