Radical scavenging activity of plant extracts from improved processing. Issue 11 (November 2019)

• Record Type: Journal Article
• Authors: Szerlauth, Adél; Muráth, Szabolcs; Viski, Sándor; Szilagyi, Istvan
• Is Part Of: Heliyon. Volume 5:Issue 11(2019)
• Publication Date: 2019-11
• Subjects: Natural product chemistry -- Physical chemistry -- Food science -- Herbal extracts -- Antioxidant activity -- Plant processing -- DPPH assay -- Radical scavenge; Research -- Periodicals; Medical sciences -- Periodicals; Natural history -- Periodicals; Social sciences -- Periodicals; Earth sciences -- Periodicals; Physical sciences -- Periodicals; 507.2
• DOI: 10.1016/j.heliyon.2019.e02763
• Languages: English
• ISSNs: 2405-8440

Abstract

Abstract: Radical scavenging activity of extracts obtained from 16 plants harvested in South Hungary was assessed and compared to the activity of ascorbic acid standard. During extraction, a novel technique involving an ethanolic treatment at ambient temperature was used for advanced active component release. Although the procedure is time consuming, it serves as an efficient and harmless route to extract valuable antioxidant compounds from their natural sources. The as-prepared extracts consist of two phases (except Allium sativum ), a clear solution and a thick suspension containing solid plant parts that separates in about 2 h. The samples were analysed by the antioxidant assay based on the scavenging of 1, 1-diphenyl-2-picrylhydrazyl (DPPH) free radicals. For most of the species, the solid phase retained considerable amount of available antioxidant agents, while the solution parts showed significant radical scavenging activity. The main exceptions were Nigella sativa, Hippophae rhamnoides and Linum usitatissimum, where the solid parts were less active. Overall, the extracts possessed remarkable antioxidant activity that were compared to published literature data and were found to be superior. Abstract : Natural product chemistry; Physical chemistry; Food science, Herbal extracts; Antioxidant activity; Plant processing; DPPH assay; Radical scavenge