Antimicrobial and Antioxidant Activity of Essential Oils Treated by Gamma Irradiation Extracted from Citrus Peels. | ||||
| Egyptian Journal of Chemistry | ||||
| Volume 67, Issue 13, December 2024, Page 1645-1659 PDF (1.09 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2024.291091.9741 | ||||
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| Authors | ||||
Amr K. Ali 1; Kamal M. El-sahy2; Toliba A. O.2; Hany A. Shawky1; M. A. Abdelaleem  1; R. A. Elbassiony 1
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| 1Plant Research Department, Nuclear Research Center (NRC), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt. | ||||
| 2Food Science Department, Faculty of Agriculture, Zagazig University, Cairo, P.O. Box 13759, Egypt.. | ||||
| Abstract | ||||
| Orange and lemon peels was used as a source for essential oil (EO). Gamma radiation at does (0, 2, 4, 6, 8 and 10 kGy) were submitted to essential oils then essential oils were analyzed for their physicochemical properties and for chemical composition using GC/MS. 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity and Ferric-reducing antioxidant power (FRAP) were measured to examine the antioxidant activity of essential oils. Agar-well diffusion method was used to estimate antimicrobial activity. Chromatographic examination revealed that the primary constituent of orange and lemon peels EO was d-limonene. Antioxidant activity was significantly increased when essential oils were exposed to increasing levels of gamma irradiation up to 4 kGy. DPPH and FRAP values at 4 kGy were (51.16 and 76.81%) and (246.28 and 661.54 µM TE/mg) of orange and lemon peels EO, respectively. The maximum inhibition zone was shown with essential oils irradiated at a dose 4 kGy. Our study showed that lemon essential oils had the best antioxidant and antimicrobial activities compared to orange essential oils. | ||||
| Keywords | ||||
| Citrus peels EOs; Gamma radiation; GC/MS; Antimicrobial; Antioxidant activities | ||||
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