Nanofiltration helps recover blueberry polyphenols from residues

By Tim Cutcliffe contact

- Last updated on GMT

© iStock
© iStock

Related tags: Anthocyanin

The use of nanofiltration membranes enable the recovery of substantial amounts of phenolic compounds in waste residues from processed blueberries, according to a recent study in Food and Bioproducts Processing.

Blueberry skins are normally considered as a residual  waste product (known as blueberry pomace), after processing has removed the juice. However, the skins of blueberry fruits contain the highest concentration of anthocyanins, a class of polyphenols, by weight.

The use of nanofiltration membranes , by researchers at the University of Arkansas, Fayetteville enabled recovery of between 73% and 99% of these anthocyanins. The use of crossflow filtration mode also minimised membrane fouling during the process.

“The present investigation clearly demonstrated that the nanofiltration technology of membrane based separation can be suitably used for the efficient recovery of total polyphenols (anthocyanins, flavonols and chlorogenic acid) from the blueberry pomace in the cross flow mode of filtration,”​ wrote first author, Dr. Alexandru Avrama.

Although this initial study was of pilot-plant scale, the establishment of a larger facility could potentially transform the pomace, previously considered as a waste product, into a commercially valuable source of anthocyanins.  

“There is an incentive to further process the blueberry pomace and extract those remaining polyphenols for applications as natural colourants, encapsulated supplements or added nutraceuticals,” ​explained the researchers.

Source: Food and Bioproducts Processing

Volume 106, pp 91-101    DOI:  10.1016/j.fbp.2017.07.006

“Concentrations of polyphenols from blueberry pomace extract using nanofiltration”

Authors:  Alexandru M. Avram, Pauline Morin, Cindi Brownmiller , Luke R. Howard, Arijit Sengupta, S. Ranil Wickramasinghe

Related news

Related products

show more

Decoding the Six Pathways of Ageing

Decoding the Six Pathways of Ageing

Gencor | 04-Oct-2018 | Technical / White Paper

The desire to extend lifespan has been around since the beginning of time and with the growing ageing population, more and more research is being conducted...

Adulteration: Don’t Be Fooled, Know the Facts

Adulteration: Don’t Be Fooled, Know the Facts

Sabinsa: our innovation is your answer® | 09-Jul-2018 | Technical / White Paper

Increased knowledge and awareness of natural products has in turn increased their global demand. This well documented paper highlights various examples,...

Related suppliers

Follow us

Featured Events

View more


View more