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Isomerization and increase in the antioxidant properties of lycopene from Momordica cochinchinensis (gac) by moderate heat treatment with UV-Vis spectra as a marker.
Food Chem. 2014 Aug 01; 156:58-63.FC

Abstract

Momordica cochinchinensis (gac) is a plant rich in lycopene. This pigment tends to solubilize in oil and get damaged during extraction. The impact of heating on cis-isomerization of oil-free lycopene in hexane was studied at 50 and 80°C during 240min with UV-Vis spectrometry, DAD-HPLC and TEAC test. The initial all-trans-form isomerized to the 13-cis isomer more rapidly at 80°C. After this treatment, 16% of the lycopene compounds were in the 9-cis-form. This isomer triggered an increase in the antioxidant properties which was detectable from concentrations above 9% and resulted in a change from 2.4 to 3.7μmol Trolox equivalent. It is thus possible to increase the bioactivity of lycopene samples by controlling heating. The evolution of ratios calculated from the global UV-Vis spectrum was representative of cis-isomerization and spectrometry can thus be a simple way to evaluate the state of isomerization of lycopene solutions.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Phan-Thi H
UMRA PAM (Food and Microbial Process), AgroSup Dijon, University of Burgundy and Natencaps, 1 Esplanade Erasme, F-21000 Dijon, France. Electronic address: phanhanh.ub@gmail.com.
Waché Y
UMRA PAM (Food and Microbial Process), AgroSup Dijon, University of Burgundy and Natencaps, 1 Esplanade Erasme, F-21000 Dijon, France.

MeSH

AntioxidantsCarotenoidsHot TemperatureIsomerismLycopeneMomordicaPlant ExtractsSpectrophotometry

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24629938

Citation

Phan-Thi, Hanh, and Yves Waché. "Isomerization and Increase in the Antioxidant Properties of Lycopene From Momordica Cochinchinensis (gac) By Moderate Heat Treatment With UV-Vis Spectra as a Marker." Food Chemistry, vol. 156, 2014, pp. 58-63.
Phan-Thi H, Waché Y. Isomerization and increase in the antioxidant properties of lycopene from Momordica cochinchinensis (gac) by moderate heat treatment with UV-Vis spectra as a marker. Food Chem. 2014;156:58-63.
Phan-Thi, H., & Waché, Y. (2014). Isomerization and increase in the antioxidant properties of lycopene from Momordica cochinchinensis (gac) by moderate heat treatment with UV-Vis spectra as a marker. Food Chemistry, 156, 58-63. https://doi.org/10.1016/j.foodchem.2014.01.040
Phan-Thi H, Waché Y. Isomerization and Increase in the Antioxidant Properties of Lycopene From Momordica Cochinchinensis (gac) By Moderate Heat Treatment With UV-Vis Spectra as a Marker. Food Chem. 2014 Aug 1;156:58-63. PubMed PMID: 24629938.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Isomerization and increase in the antioxidant properties of lycopene from Momordica cochinchinensis (gac) by moderate heat treatment with UV-Vis spectra as a marker. AU - Phan-Thi,Hanh, AU - Waché,Yves, Y1 - 2014/01/23/ PY - 2013/09/05/received PY - 2013/12/05/revised PY - 2014/01/14/accepted PY - 2014/3/18/entrez PY - 2014/3/19/pubmed PY - 2015/9/25/medline KW - Antioxidant KW - Extraction KW - Heat treatment KW - Isomerization KW - Lycopene KW - Marker KW - Momordica cochinchinensis (gac) KW - Natural carotenoids SP - 58 EP - 63 JF - Food chemistry JO - Food Chem VL - 156 N2 - Momordica cochinchinensis (gac) is a plant rich in lycopene. This pigment tends to solubilize in oil and get damaged during extraction. The impact of heating on cis-isomerization of oil-free lycopene in hexane was studied at 50 and 80°C during 240min with UV-Vis spectrometry, DAD-HPLC and TEAC test. The initial all-trans-form isomerized to the 13-cis isomer more rapidly at 80°C. After this treatment, 16% of the lycopene compounds were in the 9-cis-form. This isomer triggered an increase in the antioxidant properties which was detectable from concentrations above 9% and resulted in a change from 2.4 to 3.7μmol Trolox equivalent. It is thus possible to increase the bioactivity of lycopene samples by controlling heating. The evolution of ratios calculated from the global UV-Vis spectrum was representative of cis-isomerization and spectrometry can thus be a simple way to evaluate the state of isomerization of lycopene solutions. SN - 1873-7072 UR - https://www.unboundmedicine.com/medline/citation/24629938/Isomerization_and_increase_in_the_antioxidant_properties_of_lycopene_from_Momordica_cochinchinensis__gac__by_moderate_heat_treatment_with_UV_Vis_spectra_as_a_marker_ DB - PRIME DP - Unbound Medicine ER -