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Valorization of artichoke wastewaters by integrated membrane process
C Conidi1, A Cassano, E Garcia-Castello
1Institute on Membrane Technology, ITM-CNR, c/o University of Calabria, via P. Bucci, 17/C, I-87030 Rende, Cosenza, Italy.
Water Research
|October 16, 2013
Summary
This study developed an integrated membrane system to fractionate artichoke wastewater, separating valuable phenolic compounds and sugars. The process yields distinct fractions for nutraceutical and food applications, demonstrating efficient waste valorization.
Area of Science:
- Food Science
- Chemical Engineering
- Environmental Science
Background:
- Artichoke processing generates wastewater rich in bioactive compounds.
- Efficient fractionation of this wastewater is crucial for waste valorization and resource recovery.
Purpose of the Study:
- To develop and evaluate an integrated membrane system for fractionating artichoke wastewater.
- To separate valuable phenolic compounds and sugars from artichoke processing waste.
Main Methods:
- Laboratory-scale ultrafiltration (UF) for pre-treatment.
- Nanofiltration (NF) using Desal DL and NP030 membranes for fractionation.
- Analysis of phenolic compounds, sugars, and total antioxidant activity (TAA).
Main Results:
- Both UF and NF effectively removed suspended solids and phenolic compounds.
- Desal DL membrane achieved 100% sugar rejection, while NP030 showed 4.02% rejection.
- The system produced separate fractions enriched in phenolics and sugars, with high TAA retention.
Conclusions:
- An integrated UF-NF process effectively fractionates artichoke wastewater.
- The process yields valuable fractions for nutraceutical, cosmeceutical, and food industries.
- This approach enables efficient valorization of artichoke processing byproducts.
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