Thermal Isomerization of All-trans-Lutein in a Benzene Solution | Zendy

Achmad Subagio | Zendy; Naofumi Morita | Zendy; Shigeo Sawada | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Thermal Isomerization of All-trans-Lutein in a Benzene Solution

Author(s) -

Achmad Subagio,

Naofumi Morita,

Shigeo Sawada

Publication year - 1998

Publication title -

bioscience biotechnology and biochemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.509

H-Index - 116

eISSN - 1347-6947

pISSN - 0916-8451

DOI - 10.1271/bbb.62.2453

Subject(s) - isomerization , lutein , benzene , cis–trans isomerism , chemistry , thermal , photochemistry , medicinal chemistry , stereochemistry , organic chemistry , carotenoid , thermodynamics , catalysis , biochemistry , physics

Four major cis-lutein isomers could be identified after thermal isomerization of all-trans-lutein in a benzene solution system; namely, 13'-, 13-, 9'- and 9-cis-luteins. Using both all-trans-lutein and a mixture of these purified cis-luteins as starting materials, the quantitative changes determined by HPLC response show that this thermal isomerization was a reversible reaction. The equilibrium constants (k C ) of 13'- and 13-cis-luteins were higher than those of 9'-, and 9-cis-luteins, suggesting that the amount formed of the former isomers was higher than that of the latter.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research