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Reshaping Apple Juice Production Into a Zero Discharge Biorefinery Process

  • In the last decade, the utilization of waste by-product apple pomace has been extensively researched (due to its difficult disposal) and currently finds beneficial usage in various industries; as substrate for microbial growth or recovery of pectin, xyloglucan and polyphenols. In this research apple juice was produced at pilot scale. Furthermore, apple pomace was employed as substrate for the production of pectin, biofuel (pellets) and concentrated apple pomace extract. Extensive mass and heat balances were conducted to evaluate the feasibility of this approach on industrial scale. The produced pellets had very similar characteristics to wood pellets (net calorific value of 20.3 MJ/kg). Dried apple pomace contained 11.9% of pectin. Fed-batch cultivation of baker´s yeast with apple pomace extract demonstrated a potential for partial substitution of molasses in industrial bioprocesses. This concept shows how a zero discharge biorefinery process converts waste from apple juice production into three valuable products enabling connections between different industries.

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Author:Josipa Lisičar Vukušić, Thomas Millenautzki, Ronny Cieplik, Veit Obst, Abdechafik Mokhlis Saaid, Leonardo Clavijo, Slododan Zlatanovic, Jendrik Hof, Marek Mösche, Stéphan Barbe
Parent Title (English):Waste and Biomass Valorization
Publisher:Springer Netherlands
Document Type:Article
Date of first Publication:2021/07/01
Date of Publication (online):2023/06/19
GND-Keyword:Apfelsaft; Pektine; Pellet
Tag:Apple Juice; Apple Pomace; Pectin; Pellets
Page Number:11
Institutes:Angewandte Naturwissenschaften (F11)
Dewey Decimal Classification:500 Naturwissenschaften und Mathematik
Open Access:Open Access
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International