Action of chlorophylls on the stability of virgin olive oil |
| |
| Authors: | Francisca Gutiérrez-Rosales Juan Garrido-Fernández Lourdes Gallardo-Guerrero Beatriz Gandul-Rojas M. Isabel Minguez-Mosquera |
| |
| Affiliation: | (1) Unidad Estructural de Biotecnologia de los Alimentos, Instituto de la Grasa y sus Derivados (C.S.I.C.), 41012 Sevilla, Spain |
| |
| Abstract: | Virgin olive oil was used as substrate to study the influence of chlorophylls on its oxidative stability in light and in darkness. Chlorophylls a and b were added to this substrate, after which oils were stored at 36 ± 2°C for three months under artificial light (1340 lux) or in darkness. The effect of light was greater than that of the additives. The prooxidant action of chlorophylls in the presence of other pigments of the oil was not observed in this assay. During early storage, the rate of peroxide formation was lower in the samples with added chlorophylls, but later it equalled that of the control. In darkness, stability was greater in the samples containing chlorophylls, indicating a slight antioxidant effect, which was more marked for chlorophyll a. |
| |
| Keywords: | Carotenoids chlorophylls K232 oxidation peroxide value pheophytins pigment analysis pigments virgin olive oil |
| 本文献已被 SpringerLink 等数据库收录！ |
