Oxidative Stability at Different Storage Conditions and Adulteration Detection of Prickly Pear Seeds Oil

Figure 2

Evolution of quality parameters of prickly pear seeds oil during storage at various packaging conditions: dark glass bottles/clear glass bottles, with nitrogen/without nitrogen. (a) Peroxide index. (b) Free acidity. (c) Specific extinction coefficient K₂₃₂. (d) Specific extinction coefficient K₂₇₀. The error bars represent the standard deviation of three replicates. Means with the same letter for the same storage time are not significantly different according to Student–Newman–Keuls test at  < 0.05.

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