Effect of gamma irradiation on the total antioxidant content and activity of carica papaya l. var. sekaki extract powder

Md Zaini, Nur Asyiqin (2020) Effect of gamma irradiation on the total antioxidant content and activity of carica papaya l. var. sekaki extract powder. [Project Paper] (Submitted)

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Abstract

Application of gamma irradiation in food industry has been considered an important method for prevention of decay, increasing the shelf life of a large range of perishable fruits due to the rapid post-harvest maturation. Papaya is high in nutrients and contains three potent antioxidants such as vitamin A, C and E. This study aimed to determine the effect of gamma irradiation on the total antioxidant content and activity of non-irradiated and irradiated (3kGy, 6kGy and 9kGy) of Carica papaya L.var Sekaki extract powder. Total antioxidant content was determined by using the Follin ciocalteu method and Aluminium Chloride Colorimetric assay while total antioxidant activities were determined using DPPH radical scavenging assay and Ferric Reducing Antioxidant Potential (FRAP) assay. The result showed that there are significant differences in total phenolic content between non-irradiated and irradiated Carica Papaya L.var Sekaki (p<0.05) There was also a significant difference (p<0.005) of total flavonoid content between non-irradiated and irradiated Carica Papaya L. var Sekaki at 6kG. There was a significant difference between the percentage of scavenging activity of non-irradiated and irradiated Carica papaya L.var Sekaki at 6kGy (p<0.05). There was a significant difference (p<0.05) in reducing power between non-irradiated and irradiated Carica papaya L.var Sekaki. Total phenolic content (TPC) and Ferric Reducing Antioxidant Potential (FRAP) were significantly enhanced by gamma irradiation at doses 3kGy.However, the total flavonoid content (TFC) and the percentage of DPPH free radical scavenging activity decrease because of irradiation. Gamma irradiation has the potential to induce antioxidant properties of the papaya fruits.

Item Type:	Project Paper
Faculty:	Faculty of Medicine and Health Science
Depositing User:	Ms Norafizah Radzuan
Date Deposited:	04 Sep 2023 03:52
Last Modified:	04 Sep 2023 03:52
URI:	http://psaspb.upm.edu.my/id/eprint/1227

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