Article (Scientific journals)
Impact of aromatization by Citrus limetta and Citrus sinensis peels on olive oil quality, chemical composition and heat stability
Khemakhem, Ibtihel; Yaiche, Chiraz; Ayadi, Mohamed et al.
2015In Journal of the American Oil Chemists' Society, 92 (5), p. 701 - 708
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Keywords :
Antioxidant activity; Olive oil aromatization; Oxidative stability; Sweet lime; Sweet orange
Abstract :
[en] The objectives of this work were to study the impact of aromatization by sweet lemon and sweet orange peels on olive oil quality, chemical composition and heat stability. Flavored olive oils were prepared by maceration of sweet lime and sweet orange zests at 1, 3 and 5 %. The oil samples were kept at 60°C for 40 days. Physicochemical tests (FFA, PV, oxidative stability, polyphenols and pigments contents) were carried out. The antioxidant activity (β-carotene-linoleate bleaching assay, DPPH radical scavenging and reducing power) was also tested. Results indicated that the addition of citrus zests contributed to the increase in polyphenols and carotenoids contents. Moreover, it led to an increase in the DPPH-radical scavenging activity (99.50 % for flavored olive oil with sweet orange zests at 5 %). Flavored olive oils with sweet orange zests were more stable to heat treatment than those flavored with sweet lemon zests. The degradation rate of bioactive compounds was lower for virgin olive oil comparing to flavored oils.
Disciplines :
Food science
Author, co-author :
Khemakhem, Ibtihel;  Laboratoire d'Analyse, Ecole Nationale d'Ingénieurs de Sfax (ENIS), Université de, Sfax, Tunisia
Yaiche, Chiraz;  Laboratoire d'Analyse, Ecole Nationale d'Ingénieurs de Sfax (ENIS), Université de, Sfax, Tunisia
Ayadi, Mohamed ;  Laboratoire d'Analyse, Ecole Nationale d'Ingénieurs de Sfax (ENIS), Université de, Sfax, Tunisia ; Institut Supérieur de Biotechnologie de Sfax (ISBS), Université de Sfax, Sfax, Tunisia
Bouaziz, Mohamed;  Institut Supérieur de Biotechnologie de Sfax (ISBS), Université de Sfax, Sfax, Tunisia ; Laboratoire d'Electrochimie et Environnement, Ecole Nationale d'Ingénieurs de Sfax (ENIS), Université de Sfax, Sfax, Tunisia
Language :
English
Title :
Impact of aromatization by Citrus limetta and Citrus sinensis peels on olive oil quality, chemical composition and heat stability
Publication date :
30 May 2015
Journal title :
Journal of the American Oil Chemists' Society
ISSN :
0003-021X
eISSN :
1558-9331
Publisher :
Springer Verlag
Volume :
92
Issue :
5
Pages :
701 - 708
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 December 2024

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