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1,4‐Benzopyrone derivates are exposed to different cold gas discharges. Reactions are carried out using different feed gases (argon, oxygen) and excitation sources (radio frequency, microwave) at both atmospheric and low pressure. A structure‐dependent degradation upon plasma‐chemical reactions can be observed. From contact‐angle measurements a strong surface oxidation is suggested. Independent of the source used plasma treatment leads to a significant increase in oxygen content of the samples through newly introduced carbonyl‐ and carboxyl‐functions. This is in agreement to results showing that during thermal food processes oxidative species lead to the formation of characteristic low‐molecular weight degradation products.