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Titolo:
Effects of ozone and oxygen on the degradation of carotenoids in an aqueous model system
Autore:
Henry, LK; Puspitasari-Nienaber, NL; Jaren-Galan, M; van Breemen, RB; Catignani, GL; Schwartz, SJ;
Indirizzi:
Ohio State Univ, Dept Food Sci & Technol, Columbus, OH 43210 USA Ohio State Univ Columbus OH USA 43210 i & Technol, Columbus, OH 43210 USA N Carolina State Univ, Dept Food Sci, Raleigh, NC 27695 USA N Carolina State Univ Raleigh NC USA 27695 ood Sci, Raleigh, NC 27695 USA CSIC, Inst Grasa & Derivados, E-41012 Seville, Spain CSIC Seville Spain E-41012 nst Grasa & Derivados, E-41012 Seville, Spain Univ Illinois, Dept Med Chem & Pharmacognosy, Chicago, IL 60612 USA Univ Illinois Chicago IL USA 60612 & Pharmacognosy, Chicago, IL 60612 USA
Titolo Testata:
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
fascicolo: 10, volume: 48, anno: 2000,
pagine: 5008 - 5013
SICI:
0021-8561(200010)48:10<5008:EOOAOO>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANS-BETA-CAROTENE; SINGLET OXYGEN; OXIDATION; PRODUCTS; ANTIOXIDANT; RADICALS; REACTIVITY; LYCOPENE; KINETICS; ISOMERS;
Keywords:
ozone; oxidation; carotenoids; beta-carotene; beta-cryptoxanthin; lycopene; degradation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Schwartz, SJ Ohio State Univ, Dept Food Sci & Technol, Columbus, OH 43210 USA Ohio State Univ Columbus OH USA 43210 Columbus, OH 43210 USA
Citazione:
L.K. Henry et al., "Effects of ozone and oxygen on the degradation of carotenoids in an aqueous model system", J AGR FOOD, 48(10), 2000, pp. 5008-5013

Abstract

The effects of ozone and oxygen on the degradation of carotenoids in an aqueous model system were studied. All-trans beta -carotene, 9-cis beta -carotene, beta -cryptoxanthin, and lycopene were adsorbed onto a C-18 solid phase and exposed to a continuous flow of water saturated with oxygen or ozoneat 30 degreesC. Carotenoids were analyzed using HPLC with a C-30 column and a photodiode array detector. Approximately 90% of all-trans beta -carotene, 9-cis beta -carotene, and beta -cryptoxanthin were lost after exposure to ozone for 7 h. A similar loss of lycopene occurred in only 1 h. When exposed to oxygen, all carotenoids, except beta -cryptoxanthin, degraded at lower rates. The degradation of all the carotenoids followed zero-order reaction kinetics with the following relative rates: lycopene > beta -cryptoxanthin > all-trans beta -carotene > 9-cis beta -carotene. The major degradationproducts of-carotene were tentatively identified on the basis of their elution on the HPLC column, UV-Vis spectra, and electrospray LC-MS. Predominant isomers of beta -carotene were 13-cis, 9-cis, and a di-cis isomer. Products resulting from cleavage of the molecule were beta -apo-13-carotenone andbeta -apo-14'-carotenal, whereas epoxidation yielded beta -carotene 5,8-epoxide and beta -carotene 5,8-endoperoxide.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 12:22:56