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Journal of Advances in Biology & Biotechnology, 2394-1081,Vol.: 16, Issue.: 3


Evolution of Lipid Oxidation in Syrian Olive Oil under Irradiation and Storage


Mahfouz Al-Bachir1* and Abeer Koudsi2

1Department of Radiation Technology, Atomic Energy Commission of Syria, Syria.

2Faculty of Medicine, Damascus University, Damascus, Syria.

Article Information


(1) Adesh K. Saini, Professor, School of Biotechnology, Bioengineering and Food Technology, Faculty of Applied Sciences and Biotechnology, Shoolini University Solan, Himachal Pradesh, India.


(1) Raúl Leonel Grijalva Contreras, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias,  México.

(2) Rosendo Balois Morales, Universidad Autónoma de Nayarit, México.

(3) Fei Chang, Institute of Comprehensive Utilization of Plant Resources, China.

(4) Nicola Caporaso, University of Naples Federico II, Italy.

Complete Peer review History: http://www.sciencedomain.org/review-history/22714


Aims: The current study examines variations in Syrian olive oil (SOO) after gamma irradiation treatment and during storage.

Study Design: Four irradiation treatments (0, 1, 2 and 3 kGy) were distributed in a completely randomized design with three replicates. 

Place and Duration of Study: The study was conducted during 2009/2010 growing season of Kaissy olive fruits produced at Deer Al Hajar research station, Damascus, Syria.

Methodology: Measurements of selected chemical values involving, acidity value (AV), peroxide value (PV), Thiobarbituric acid (TBA) malondialdehyde value (MDA), iodine value (IV) and saponification (specification) value (SV) and selected physical values namely refractive index (RI) and viscosity were carried out  using standard methods.

Results: Results revealed that the levels of the analyzed parameters was within the limits established by codex standard for the highest quality category "extra virgin" olive oils (EVOO). Gamma irradiation statistically (P <0.01) influenced AV, PV, IV, SV and viscosity of olive oils. AV, OV and MDA increased (P <0.01), while SV deceased (P <0.01) by irradiation. The lowest dose gave highest and the highest dose gives the lowest values of AV and PV. Also storage time had a significant influence on all analyzed parameters. AV and PV increased during storage time, and a maximum increase in AV (1.01%) was observed in olive oil that was treated with lowest irradiation dose.

Conclusion: Both irradiation treatment and storage time had a significant (P <0.01) effect on most of the measured chemical and physical parameters (AV, PV, MDA value, IV, SV, RI and viscosity) of EVOO.

Keywords :

Extra virgin olive oil; Syria; Kaissy cultivar; gamma irradiation.

Full Article - PDF    Page 1-10

DOI : 10.9734/JABB/2017/38271

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