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Spectroscopic (LC‐ESI‐MS/MS, FT‐IR, NMR) and functional characterization of fruit seed oils extracted with green technology: A comparative study with Prunus cerasus and Punica granatum oils
Author(s) -
Başyiğit Bülent,
Sağlam Hidayet,
Hayoğlu İbrahim,
Karaaslan Mehmet
Publication year - 2021
Publication title -
journal of food processing and preservation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.511
H-Index - 48
eISSN - 1745-4549
pISSN - 0145-8892
DOI - 10.1111/jfpp.15451
Subject(s) - ellagic acid , chemistry , punica , food science , dpph , gallic acid , antimicrobial , abts , polyphenol , antioxidant , organic chemistry , biology , horticulture
Sour cherry seed oil (SCSO) and pomegranate seed oil (PSO) were extracted by using cold‐press technology and characterized in terms of physicochemical properties, bioactive compound contents, biological activity, and spectroscopic features. They were rich in unsaturated fatty acids (UFAs). The predominant carotenoid was zeaxanthin (13.15 mg/kg) for SCSO and β‐carotene (33.45 mg/kg) for PSO. Naringenin, ellagic acid, resveratrol, kaempferol, catechin, and gallic acid were found to be the major secondary metabolites in the samples by LC/MS‐MS. Further analysis of phenolic compounds and fatty acids were conducted by using 13 C and 1 H NMR. Functional groups of the oils were analyzed by FT‐IR spectra. DPPH, ABTS, FRAP, and CUPRAC assays were used to investigate the antioxidant activity. The α‐glucosidase inhibition activity of SCSO and PSO was 4.38 and 5.16 mg/ml, respectively. SCSO exhibited antimicrobial activity against Staphylococcus aureus although the growth of Staphylococcus aureus and Escherichia coli was inhibited by the PSO. Practical applications There is remarkable demand for cold‐pressed seed oils instead of other oils in western countries, recently. The results showed that sour cherry seed oil and pomegranate seed oil have the potential to improve the nutritional value of food and/or pharmaceutical materials thanks to their natural bioactive compounds, especially UFAs. Therefore, these seed oils could be evaluated as an enrichment ingredient in the various formulations instead of other oils used in different industries.