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Evaluation of pequi (Caryocar Brasiliense Camb.) aqueous extract quality processed by membranes

Paper ID Volume ID Publish Year Pages File Format Full-Text
19029 43041 2015 9 PDF Available
Title
Evaluation of pequi (Caryocar Brasiliense Camb.) aqueous extract quality processed by membranes
Abstract

•Pequi extract can recover the antioxidants compounds.•Membrane process was studied for pequi extract concentration.•Permeate flux process and antioxidant compounds of produced fractions were evaluated.•Nanofiltration process retained almost 100% of carotenoids and polyphenols.

Pequi (Caryocar Brasiliense Camb.) is a typical fruit from Brazilian Cerrado, rich in antioxidant compounds, such as carotenoids and phenolic substances. Membrane processes allow concentrating extracts at low temperatures, preserving its functional properties. This work reports the results on the carotenoids and polyphenols concentration from pequi aqueous extract by ultrafiltration and nanofiltration processes, in order to develop a natural product rich in biologically active compounds suitable for functional applications. Experimental assays were performed in a dead-end stirred cell and membrane performance was evaluated in terms of permeate flux and permeate and retentate composition in relation to carotenoids and, phenolic substances content as well as antioxidant capacity. The ultrafiltration and the two different nanofiltration membranes presented rejection coefficients around 98%, 100% and 100% of the carotenoids and 65%, 94% and 97% of phenolic compounds, respectively. Thus, the nanofiltration showed a better performance to recovery the antioxidants compounds of pequi aqueous extract.

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Keywords
Pequi; Polyphenols; Carotenoids; Ultrafiltration; Pore blocking; Nanofiltration
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Evaluation of pequi (Caryocar Brasiliense Camb.) aqueous extract quality processed by membranes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 95, July 2015, Pages 304–312
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us