Pulsed Electric Field Processing of Apples

Mallory, Logan [Idaho National Laboratory] (ORCID:0009000399913212); Williams, Luke [Idaho National Laboratory] (ORCID:0000000219350110)

DOE OSTI · 3378729

Pulsed Electric Field Processing of Apples

Mallory, Logan [Idaho National Laboratory] (ORCID:0009000399913212)·Williams, Luke [Idaho National Laboratory] (ORCID:0000000219350110)

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Abstract

Pulsed electric field (PEF) processing is a nonthermal technology that has the potential to improve the efficiency of apple processing, particularly for firm cultivars that are growing in popularity. This study evaluated the effects of PEF pretreatment on the processability and product quality of Cosmic Crisp apples, a modern cultivar known for its firmness. Apples were treated with PEF and assessed for tissue softening, mechanical energy requirements, particle size reduction, browning tendencies, and juice yield. PEF treatment significantly softened the apple tissue, as demonstrated by reduced compression forces in Instron testing, and this softening translated to decreased grinding energy during applesauce production. There were no changes to the particle size distribution of the resulting applesauce. PEF treatment also altered browning behavior and produced higher juice yields following mechanical disruption, suggesting enhanced membrane permeability and mass transfer. Together, these results show that PEF pretreatment can reduce mechanical energy demands and increase extractability without reducing product quality in firm apple varieties. These outcomes highlight the potential of PEF to increase the value recovered from processing-grade apples and to support more efficient and sustainable apple processing operations.

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32 - ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION 47 - OTHER INSTRUMENTATION Apple Processing Non-Thermal Processing Pulsed Electric Field

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Mallory, Logan [Idaho National Laboratory] (ORCID:0009000399913212), Williams, Luke [Idaho National Laboratory] (ORCID:0000000219350110). 2026-07-20. Pulsed Electric Field Processing of Apples. https://www.osti.gov/biblio/3378729

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