Concentration of phenolic compounds from apple pomace extracts by nanofiltration at lab and pilot scale with a techno‐economic assessment

• DOI: 10.1111/jfpe.12629
• Publication Date: 2017-09-29T16:49:10Z
• Authors: Maarten Uyttebroek; Pieter Vandezande; Miet Van Dael; Sam Vloemans; Bart Noten; Bas Bongers; Wim Porto‐Carrero; Maria Muñiz Unamu...; Metin Bulut; Bert Lemmens
• Keywords: Pomace; Nanofiltration

Abstract Apple pomace can be used as resource for the extraction of phenolic compounds with antioxidant properties. Pressing apple in juice and at lab scale open air (aerobic) under N 2 atmosphere (anaerobic) showed a recovery 85% after anaerobic pressing, compared to 43% aerobic indicating loss by oxidation advantage over pressing. After membrane screening concentration test scale, commercial nanofiltration NFX was selected concentrate an ethanol : water extract pomace. At pilot concencentration 10 quinic acid increased from 59.5 mg/L 1256.1 final retentate, that is, factor 21.1. The volume crude reduced 28.5 during filtration, some testing due fouling or polyphenols. using spiral‐wound module good flux compounds, technical feasibility technology efficient polyphenols solvent. Unfortunately, process not economically feasible assumptions made. Practical applications valorization food waste production high‐added value products is increasingly hot topic. Phytochemicals are present relatively low fruit matrix, solvent necessary develop industrially relevant process. In this study, filtration its energy consumption mild processing conditions other technologies. Membrane techno‐economic assessment nutraceutical industries evaluate phytochemicals extracted agroindustrial by‐products.