Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.19/4743
Título: Influence of extraction time and volume of extracting solution on the phenolic compounds and antioxidant activity of strawberry.
Autor: Ferrão, Ana Cristina
Guiné, Raquel
Gonçalves, Fernando
Correia, Paula
Gonçalves, João Carlos
Palavras-chave: Antioxidant Activity
Anthocyanins
Bioactive phenols
Extraction conditions
Data: 2017
Citação: Ferrão, A.C., Guiné, R.P.F., Gonçalves, F.J.A., Correia, P.M.R., & Gonçalves, J.C. (2017, December). Influence of extraction time and volume of extracting solution on the phenolic compounds and antioxidant activity of strawberry. In Abstract Book and Proceedings of International Congress on Engineering, Universidade da Beira Interior, Covilhã, Portugal, pp. 1-11.
Resumo: This work aimed at comparing different extracting conditions in order to enhance the extraction of phenolic compounds with antioxidant activity from strawberry. For the laboratorial tests, the strawberries were triturated and samples of 5 g were taken to perform extractions with methanol, for different times (15 and 60 min.) and using different volumes of the extraction solvent (25 and 50 mL). For each of the combinations three successive extractions were made and in each extract were quantified the total phenolic compounds (TPC), anthocyanins (ANT) and the antioxidant activity (AOA), all by spectrophotometric techniques. The results indicated that the more adequate conditions for the extraction of phenolic compounds and anthocyanins with antioxidant activity from strawberries corresponded to three successive extractions using each lasting for 60 min and using 50 mL of methanol. These conditions potentiated the extraction of high amounts of phenolic compounds with antioxidant activity. The TPC contents in the fresh strawberry varied from 2.2 to 3.2 mg GAE/g, the ANT contents varied from 131 to 149 mg Mv3G/g and the AOA was evaluated in the range 12.6 to 23.9 µmol TE/g.
Peer review: yes
URI: http://hdl.handle.net/10400.19/4743
Aparece nas colecções:ESAV - DIA - Documentos de congressos (comunicações, posters, actas)

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