Phenolic contents and antioxidant capacities of wild and cultivated white lupin (Lupinus albus L.) seeds

• Published in: Food chemistry Vol. 258; pp. 1 - 7
• Main Authors: Karamać, Magdalena, Orak, Hakime H., Amarowicz, Ryszard, Orak, Adnan, Piekoszewski, Wojciech
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 30.08.2018
• Subjects: Antioxidant activities; antioxidant activity; antioxidants; Antioxidants - chemistry; Apigenin - analysis; beta Carotene - chemistry; Chromatography, High Pressure Liquid; cultivars; Cultivated lupin; emulsions; gallic acid; Gallic Acid - analysis; Genotype; Glucosides - analysis; Individual phenolics; liquid chromatography; Lupinus - chemistry; Lupinus - genetics; Lupinus - metabolism; Lupinus albus; Mass Spectrometry; p-coumaric acid; Phenols - analysis; Plant Extracts - chemistry; Propionates - analysis; seeds; Seeds - chemistry; Seeds - metabolism; Total phenolic content; White lupin seeds; Wild lupin; Total phenolic content; White lupin seeds; Antioxidant activities; Individual phenolics; Wild lupin; Cultivated lupin
• ISSN: 0308-8146; 1873-7072; 1873-7072
• DOI: 10.1016/j.foodchem.2018.03.041

•Antioxidant capacity of cultivated and wild L. albus seeds did not differ significantly.•The same phenolic compounds dominated in cultivated and wild white lupin seeds.•L. albus seeds were rich in p-coumaric acid derivatives and apigenin-6,8-di-C-glucoside. The aim of this study was to compare the antioxidant capacities and phenolic compound profiles of wild and cultivated Lupinus albus L. seeds. The total phenolic content (TPC), radical scavenging activity, ferric-reducing antioxidant power (FRAP) and antioxidant activity in an β-carotene-linoleic acid emulsion were determined. Liquid chromatography-mass spectrometry was used to identify phenolics. The TPC of lupin seeds ranged from 4.36 to 7.24 mg gallic acid equivalent/g dry matter (d.m.). The dominant phenolics of all genotypes were two p-coumaric acid derivatives (0.74–1.61 and 0.66–1.63 mg/g d.m.) and apigenin-6,8-di-C-glucoside (1.13–1.31 mg/g d.m.). The results of antioxidant assays of wild lupin extracts were similar to or lower than those of the cultivated variety. FRAP and ABTS+ scavenging activity were correlated with the contents of the more polar p-coumaric acid derivative and apigenin-6,8-di-C-glucoside. Generally, significant differences between cultivated and wild L. albus seeds were not found in antioxidant capacities and phenolic compound contents.