Controlling fungal growth in sesame (Sesamum indicum L.) seeds with γ-irradiation: impacts on some properties of sesame oil

Author:

Hassan A. B.,Mohamed Ahmed I. A.ORCID,Sir Elkhatim K. A.ORCID,Elagib R. A.A.ORCID,Mahmoud N. S.ORCID,Mohamed M. M.ORCID,Salih A. M.ORCID,Fadimu G.ORCID

Abstract

This study investigated the free fatty acids, fatty acid profile, total phenolics, and antioxidant activity of sesame seed oil extracted from γ-irradiated seeds and the decontamination effects of the treatment on fungal incidence in the seeds. Gamma irradiation reduced (P ≤ 0.05) fungal growth and colony forming units of sesame seeds in a dose-dependent manner. The free fatty acid content of sesame oil decreased (P ≤ 0.05) in irradiated samples compared to non-radiated controls, but there was no difference (P ≥ 0.05) between samples treated at doses ≥ 1.0 kGy. A concomitant (P ≤ 0.05) increase in total phenolic and scavenging activity was observed in the oil extracted from γ-irradiated sesame seeds in comparison with non-radiated samples, while free fatty acid (FFA) content decreased. The results obtained in the present study demonstrate that γ-irradiation at low doses can be used as an effective post-harvest preservation method for sesame seeds without a major effect on the quality of sesame oil.

Publisher

Editorial CSIC

Subject

Organic Chemistry,Food Science

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