ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Spectrophotometric determination of trans-β-carotene isomerization. The effect of temperature

V. Špringer

Komensky University, Bratislava

Abstract: Changes of trans-β-carotene (I) in hexane soln. caused by boiling are described. There is an isomerization with a formation of cis isomers which show lower extinction values in the spectrophotometric detn. If the soln. is distd. over boiling water, there is a rapid isomerization and a partial decompn. of I. If the distn. is carried out at 70-80° at decreased pressure and if the last 3 to 4 ml. of soln. are removed by CO2 stream, I does not change.

Full paper in Portable Document Format: 1410a701.pdf (in Slovak)

Chemical Papers 14 (10) 701–706 (1960)