Punicalagin and ellagic acid are the major polyphenols present in pomegranate peels. The contents of α‐punicalagin, β‐punicalagin, and ellagic acid in the pomegranate peels were approximately 75, 72, and 20 µM, respectively. The reactions of polyphenols in pomegranate peels with sodium nitrite under simulated stomach conditions were studied. The reactions decreased the polyphenolic contents of the pomegranate peels and accompanied the formation of nitroso compounds. The oxidation rates followed the order ellagic acid ＜α‐punicalagin ≈ β‐punicalagin. The results suggested that the reactions can occur in the stomach after a meal, while the pH changes from 2 to 4.5.

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As global environmental pollution and traditional fossil energy consumption continue to intensify, renewable energy such as wind and solar generation gradually becomes preferred primary energy. In order to promote energy transformation, improve the penetration rate of renewable energy and realize the coordination and complementarity of multi-energy, the power system is the core. The integrated energy system is formed by coupling with natural gas system. In this paper, a two-stage stochastic coordinated scheduling of integrated gas-electric distribution systems (IGEDS) considering network reconfiguration is proposed. The objective of the model minimizes the total system operation cost of the IGEDS in the first stage, while ensuring system security considering the uncertainties of wind generation in the second stage. Moreover, network reconfiguration is also included to improve system flexibility and efficiency. Numerical case studies illustrate that the consideration of P2G and network reconfiguration could help improve system flexibility and accommodate wind generation. It is also demonstrated that the proposed two-stage scheduling model could balance system operation cost and security with different forecasting errors of wind generation.