| Summary: | <i>Fragaria orientalis</i> is the most distributed wild strawberry in the North Asia, and it is consumed in large quantities by the local population. However, poor knowledge of the chemical composition, metabolic profiles, and bioactivity leads to the insufficient use of <i>F. orientalis</i> beyond the region. The aim of our study was to investigate the nutritional value, chemical composition, and sensory parameters of wild and cultivated <i>F. orientalis</i> fruits, before and during postharvest storage. Sixty-five compounds were identified by liquid chromatography–mass spectrometry (LC–MS). Wild and cultivated fruits have the same LC–MS profiles, but quantitative levels varied, in favor of the wild samples. The extracts of <i>F. orientalis</i> fruit demonstrated high radical-scavenging potential, and ascorbic acid and various phenolics were identified as principal antioxidants. Significant variation in ascorbic acid, phenolic content, and total antioxidant potential was found during storage of the fresh <i>F. orientalis</i> fruit at cold and room temperatures and in defrosted fruits; storage of the dried fruits at cold temperature showed the lowest loss of bioactive compounds. The new information on postharvest changes in the phytochemicals and bioactivities provide a better understanding of the processes occurring in fresh, frozen, and dried strawberry fruits during storage.
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