Mechanism of formation of volatile compounds by thermal degradation of carotenoids in aqueous medium. 1. .beta.-Carotene degradation
β Scribed by Kanasawud, Pawinee; Crouzet, Jean C.
- Book ID
- 120300050
- Publisher
- American Chemical Society
- Year
- 1990
- Tongue
- English
- Weight
- 704 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0021-8561
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## Abstract Chemical structures of a number of components of volatile oligomers including (__n__+2)βmers (__n__ β§ 0) produced by thermal degradation of polyisobutylene were systematically determined by highβresolution capillary gas chromatogaphy/mass spectrometry (GC/MS). The total ion current (TIC
The thermal degradation of polyisobutylene is characterized by kinetics consisting of four types of intramolecular hydrogen abstraction (back-biting) of primary (p) and tertiary (t) terminal macroradicals (Ri and R;) and the successive scission at the inner position of the main chain. This reaction