SciELO - Scientific Electronic Library Online

vol.36 issue4Rearing of pejerrey (Odontesthes argentinensis) juveniles at different feeding ratesPost-mortem alterations in tambaqui (Colossoma macropomum) stored in ice author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Ciência Rural

Print version ISSN 0103-8478On-line version ISSN 1678-4596


KUSKOSKI, Eugenia Marta; ASUERO, Agustín García; MORALES, Maria Teresa  and  FETT, Roseane. Wild fruits and pulps of frozen fruits: antioxidant activity, polyphenols and anthocyanins. Cienc. Rural [online]. 2006, vol.36, n.4, pp.1283-1287. ISSN 0103-8478.

The tropical fruit juices are gaining ever greater space in the consumer market, and Brazil is one of the main producer countries in this market. There is a great diversity of products derived from fruits and new products for consumption are launched constantly, often without the necessary research into their active properties and beneficial activities to health. The objective of this work was to determine some properties of in natura wild tropical fruit and commercialized frozen fruit pulps. Considered as a method of great applicability, 2.2-difenyL-1-picrylhydrazyl radical (DPPH·) was used to determine the antioxidant activity; the Folin-Ciocalteu method was used to determine the total polyphenol concentration and the pH difference was used for anthocyanins. The fruit pulps of greater market consumption in Southern Brazil under analysis were mulberry, grapes, açai, guava, strawberry, acerola, pineapple, mango, graviola, cupuaçu and passion fruit, and the wild fruits were jambolão and baguaçu. When represented in TEAC (Trolox equivalent antioxidant activity), the global antioxidant activity of the frozen fruit pulps oscillated between minimal and maximal TEAC values of 0.5 and 53.2mmol g-1, or between 64.8 and 1198.9mg100 g-1 for VCEAC (vitamin C equivalent antioxidant activity) values. For the in natura fruit pulp extracts, TEAC oscillated between 13.3 and 111.2mmol g-1, and between 42.8 and 2533.1mg100g-1 for VCEAC. The descending order of antioxidant capacity was acerola> mango> strawberry> grapes> açaí> guava> mulberry> graviola> passion fruit> cupuaçu> pineapple. Among the wild fruits, baguaçu presents a greater antioxidant activity than jambolão.

Keywords : DPPH method; antioxidant properties; tropical fruits.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License