Abstract
This study determined the bioactive components of rosehip (Rosa canina L.) extract obtained via supercritical carbon dioxide extraction. The total phenolic content of its extract was 214.4 mg gallic acid equivalent/kg, with the total flavonoid content of 21.1 mg quercetin equivalent/kg. The antioxidant activity of the extract, which was determined by the DPPH (2,2-diphenyl-1-picrylhydrazyl) assay, was 64.8 μmol Trolox® equivalent antioxidant capacity (TEAC)/g. Gas chromatography-mass spectrometry identified 15 bioactive components in the extract. Additionally, pre- and post-processing heavy metal analyses were conducted on rosehip powder and seeds using inductively coupled plasma mass spectrometry (ICP-MS). Results showed that metal concentrations ranged from 0.064 to 9134.1 mg/kg in rosehip powder and from 0.143 to 1929.5 mg/kg in seeds, with the concentrations of potassium and magnesium as the highest. Despite the limited uses of rosehip products, this study indicated that wild rosehips are rich in functional components with potential health benefits.
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