FOOD SCIENCE ›› 2014, Vol. 35 ›› Issue (1): 115-119.doi: 10.7506/spkx1002-6630-201401022

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

HUANG Jin1, HUI Bo-di1,*, CAI Jin2, GONG Ping1, GUAN Xin1   

  1. 1. College of Applied Arts and Science, Beijing Union University, Beijing 100191, China;
    2. College of Life Science, Hebei University, Baoding 071002, China
  • Received:2012-10-30 Revised:2013-11-25 Online:2014-01-15 Published:2014-01-22
  • Contact: HUI Bo-di E-mail:bodi_hui@buu.edu.cn

Abstract:

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).

Key words: decanoic acid, reverse micelle solvent, electronic absorption spectrum, lycopene, β-carotene, zeaxanthin

CLC Number: