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Potential of Wastewater Valorization after Wet Extraction of Proteins from Faba Bean and Pea Flours
CEBAS-CSIC, Spain.
CEBAS-CSIC, Spain.
CEBAS-CSIC, Spain.
RISE Research Institutes of Sweden, Bioekonomi och hälsa, Jordbruk och livsmedel.ORCID-id: 0000-0003-1570-3254
2021 (engelsk)Inngår i: Recent Progress in Materials, E-ISSN 2689-5846, Vol. 3, nr 2Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The present study aimed to characterize wastewater fractions obtained after the wet extraction of proteins from legumes. In addition, the suitability of wastewater fractions for the potential recovery of high value-added compounds was also examined, and consequently, the prevention of the environmental impact of these wastes was explored. Similar to the industrial production of proteins, wet alkaline and acidic extractions of proteins from faba bean and pea flours were performed in two stages of extraction. The different wastewater fractions were characterized by measuring their organic matter content, total solids (TS), total dissolved solids (TDS), electrical conductivity (EC), pH, and turbidity. The value-added compounds from these wastewater fractions were quantified, which included the protein content, carbohydrate content, phenolic content, and antioxidant activity. In addition, the phenolic compounds in these factions were identified and quantified. It was observed that the fractions obtained in the first extraction stage had 60%–90% higher organic matter content, measured as the chemical oxygen demand (COD), compared to the second fractions, indicating a higher environmental impact of the former in case of disposal. The results obtained for COD, TS, TDS, EC, pH, and turbidity demonstrated that microfiltration reduced only the turbidity (85%), and consequently, a decrease was observed in the particulate matter, while there was a practically negligible reduction in the soluble matter. Wastewater from faba exhibited the highest polyphenol content and antioxidant activity, and was, therefore, considered the most valuable fraction for potential valorization.

sted, utgiver, år, opplag, sider
Lidsen Publ Inc , 2021. Vol. 3, nr 2
Emneord [en]
Protein extraction; food industry; sidestreams; potential recovery; high value-added compounds
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-52983DOI: 10.21926/rpm.2102013OAI: oai:DiVA.org:ri-52983DiVA, id: diva2:1548971
Tilgjengelig fra: 2021-05-04 Laget: 2021-05-04 Sist oppdatert: 2021-05-04bibliografisk kontrollert

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