Clarification of Orange Press Liquors by PVDF Hollow Fiber Membranes

Membranes
Silvia SimoneAlberto Figoli

Abstract

Press liquors are typical by-products of the citrus juice processing characterized by a high content of organic compounds and associated problems of environmental impact, which imply high treatment costs. However, these wastes contain a great number of health promoting substances, including fibers, carotenoids and phenolic compounds (mainly flavonoids), whose recovery against waste-destruction technologies is very attractive for new business opportunities. In this work, the clarification of orange press liquor by using microfiltration (MF) membranes is studied as a preliminary step to obtain a permeate stream enriched in antioxidant compounds which can be further processed to produce extracts of nutraceutical and/or pharmaceutical interest. MF poly(vinylidene fluoride) (PVDF) hollow fibers were prepared by the dry/wet spinning technique. A series of fibers was produced from the same polymeric dope, in order to investigate the effect of selected spinning parameters, i.e., bore fluid composition and flowrate, on their properties. The morphology of the produced fibers was analyzed by Scanning Electron Microscopy (SEM). Fibers were further characterized for their mechanical properties, porosity, bubble point, pore size distribution...Continue Reading

References

Jan 1, 1994·Methods in Enzymology·C Rice-Evans, N J Miller
Jun 25, 1999·Free Radical Biology & Medicine·R ReC Rice-Evans
Jul 11, 2000·Journal of Agricultural and Food Chemistry·A Di MauroE Maccarone
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Jan 18, 2007·Journal of Agricultural and Food Chemistry·Guihua XuDonghong Liu
Feb 5, 2013·Journal of Hazardous Materials·Alfredo CassanoEnrico Drioli

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Citations

Jan 25, 2018·International Journal of Molecular Sciences·Alfredo CassanoRoberto Castro-Muñoz
Aug 10, 2018·Plant Foods for Human Nutrition·Rosa TundisAlfredo Cassano

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Methods Mentioned

BETA
Scanning Electron Microscopy

Software Mentioned

Excel

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