Effect of thermal treatment and light irradiation on the stability of lycopene with high Z-isomers content

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The stability of lycopene with high Z-isomers content during thermal treatment and light irradiation was investigated. Purified (all-E)-lycopene was thermally isomerized to the Z-isomers in dichloromethane (CH2Cl2) at 50 °C for 24 h. The total content of the Z-isomers of lycopene reached 56.1%. Then, the mixture of lycopene isomers was stored in the dark at 4, 25, and 40 °C for 30 days, and under light irradiation using a fluorescent light at 4 °C for 336 h. The degradation rate of lycopene during thermal treatment rose with increasing temperature and the activation energy for decomposition of the mixture of lycopene isomers was calculated to be 71.0 kJ mol-1. The degradation rate of lycopene isomers was almost the same under thermal treatment. On the other hand, during light irradiation, isomerization was promoted rather than decomposition, i.e. (9Z)- and (13Z)-lycopene converted to the (all-E)-isomer.

Medienart:

E-Artikel

Erscheinungsjahr:

2018

Erschienen:

2018

Enthalten in:

Zur Gesamtaufnahme - volume:250

Enthalten in:

Food chemistry - 250(2018) vom: 01. Juni, Seite 253-258

Sprache:

Englisch

Beteiligte Personen:

Murakami, Kazuya [VerfasserIn]
Honda, Masaki [VerfasserIn]
Takemura, Ryota [VerfasserIn]
Fukaya, Tetsuya [VerfasserIn]
Wahyudiono [VerfasserIn]
Kanda, Hideki [VerfasserIn]
Goto, Motonobu [VerfasserIn]

Links:

Volltext

Themen:

36-88-4
Carotenoid
Carotenoids
Isomerization
Journal Article
Light irradiation
Lycopene
SB0N2N0WV6
Storage stability
Thermal treatment

Anmerkungen:

Date Completed 27.08.2018

Date Revised 02.12.2018

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.foodchem.2018.01.062

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM280724020