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Effect of pH on antioxidant activity of GSE and PSE in linoleic acid at 500 mg /L. Bars with different letters are significantly different (p < 0.05). 

Effect of pH on antioxidant activity of GSE and PSE in linoleic acid at 500 mg /L. Bars with different letters are significantly different (p < 0.05). 

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The present study investigates antioxidant properties and storage stability of grape seed extract (GSE) and papaya seed extract (PSE). The effect of heat showed significant decrease whereas wide range of pH showed increase in its antioxidant activity. The storage days study indicated that, there was slight change in antioxidant activity (AOA) of GS...

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Context 1
... antioxidant activity of GSE and PSE were seen in a wide range of pH (4, 7, and 9) at concentration of 500 mg /L and the results of the investigation are presented in Figure 5. The lipid peroxidation inhibition of GSE and PSE at 500 mg/L was recorded to be 67.67 and 46.43% respectively as shown in Table 2, 9A, 9B and Figure 2.The AOA of GSE was found to be 69.01, ...