The objective of the present study is to evaluate the effect of gamma irradiation on microbial load, and physicochemical properties of dried damask rosa petal (DDRP). Syrian DDRP was irradiated at 5, 10 and 15 kGy doses. Microbial load, physicochemical and sensorial properties of DDRP samples and its extract were investigated. All used doses effect on the reducing of the microbial load was reported (P < 0.05). Complete inactivation of the total viable counts (TVC), total coliform counts (TCC), and total mold and yeast (TMY) was observed at 5 kGy at day 0. Total soluble solids (TSS), total acidity, pH value, total volatile basic nitrogen (TVBN), viscosity, flavor, taste, color and texture of DDRP extract, none of which was affected by the irradiation. Furthermore, the irradiation up to 15 kGy did not alter the color parameters of DDRL including L* (whiteness), a* (redness) and b* (yellowness), respectively. The dose of 5 kGy was considered as suitable to be applied for the purpose of microbial decontamination of DDRP without modifying their composition, physical and chemical properties of its extract.
Citation: Al-Bachir M. 2022. Efficiency Post-Harvest Treatment by Gamma Radiation for the Microbial Safety of Dried Damask Rosa Petals J Food Chem Nanotechnol 8(2): 43-49.