Teas, dietary supplements and fruit juices: A comparative study regarding antioxidant activity and bioactive compounds

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

Costa, ASG (Autor) Outra; Nunes, MA (Autor) Outra; Almeida, IMC (Autor) Outra; Carvalho, MR (Autor) Outra; Barroso, MF (Autor) Outra; Alves, RC (Autor) Outra; Oliveira, MBPP (Autor) FFUP

Revista

Título: LWT - Food Science and Technology

Vol. 49

Páginas: 324-328

ISSN: 0023-6438

Editora: Elsevier

Indexação

ISI Web of Knowledge - 27 Citações

Scopus - 33 Citações

Classificação Científica

FOS: Ciências agrárias > Outras ciências agrárias

Outras Informações

ID Authenticus: P-002-381

DOI: 10.1016/j.lwt.2012.02.030

Abstract (EN): Nowadays, new emerging products claiming antioxidant properties are becoming more frequent. However, information about this topic in their labels is usually scarce. In this paper, we analyzed total phenolics, total flavonoids and ascorbic acid contents, as well as DPPH scavenging activity of several commercial samples, namely green tea and other herbal infusions, dietary supplements, and fruit juices, available in the Portuguese market. In general, beverages containing green tea and hibiscus showed higher phenolics contents (including flavonoids) and antioxidant activity than those without these ingredients. A borututu infusion presented the lowest concentrations of bioactive compounds and scavenging activity, due to the low recommended amount of plant to prepare the beverage. Some juices without antioxidant claims in the label presented similar values to those with it.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5