4.7 Article

Averrhoa carambola L., Cyphomandra betacea, Myrciaria dubia as a Source of Bioactive Compounds of Antioxidant Properties

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FOODS
卷 12, 期 4, 页码 -

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MDPI
DOI: 10.3390/foods12040753

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star fruit; tamarillo; camu-camu; polyphenols; antioxidant capacity; bioactive compounds

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This study compared the antioxidant properties, polyphenolic compound structures, and content of vitamin C and beta-carotene in star fruit, tamarillo, and camu-camu. The results showed that camu-camu juice had the highest antioxidant capacity and the highest content of total polyphenols and vitamin C. Tamarillo juice had the highest total anthocyanin content, while star fruit juice had the highest total flavonoid content. These fruits are valuable sources of bioactive compounds with antioxidant properties.
Natural bioactive compounds play an important role in the prevention of various diseases. The exotic fruits Averrhoa carambola L. (star fruit), Cyphomandra betacea (tamarillo) and Myrciaria dubia (camu-camu) can be valuable sources of phytochemicals with antioxidant properties. The aim of this study has been to compare the antioxidant properties of these exotic fruits, the structure of polyphenolic compounds and the content of vitamin C and beta-carotene. All the juices were analyzed for their antioxidant capacity (DPPH and ABTS assays) and the composition of phenolic compounds (TP and FBBB assays, total flavonoid content, total anthocyanins). In addition, HPLC assays were performed to analyse the content of phenolic acids, flavonoids, vitamin C and beta-carotene. The results demonstrated that juice from the Myrciaria dubia fruit had the highest antioxidant capacity, which was 4.5-fold higher than that of juice from Averrhola carambola L., and nearly 7-fold higher than the antioxidant capacity of Cyphomandra betacea fruit juice. Additionally, juice from the camu-camu fruit had a 3- to 4-fold higher total polyphenol content (8290 +/- 254 mg GAE L-1) and a high level of vitamin C (8410.8 +/- 16.9 mg AA kg(-1)). In turn, tamarillo juice had a high content of total anthocyanins (5796 mg CGE L-1) and phenolic acids (mostly chlorogenic acid and caffeic acid). Juice produced from carambola had a high content of total flavonoids (1345 mg CAE L-1), and the composition of these compounds was dominated by flavanols (epicatechin). The research results justify the conclusion that fruits of Myrciaria dubia, Averrhoa carambola L., Cyphomandra betacea are rich sources of bioactive compounds with antioxidant properties, and in the near future may serve as healthful food ingredients.

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