Abstract:
:Efficient methods to achieve the safe decontamination of agricultural products are needed. Here, we investigated the decontamination of citrus fruits to test the antifungal potential of a novel non-thermal gas plasma apparatus, termed a roller conveyer plasma instrument. This instrument generates an atmospheric pressure dielectric barrier discharge (APDBP) plasma on a set of rollers. Penicillium venetum was spotted onto the surface of the fruit or pericarps, as well as an aluminium plate to act as a control, before performing the plasma treatment. The results showed that viable cell number of P. venetum decreased with a decimal reduction time (D value or estimated treatment time required to reduce viable cell number by 90%) of 0.967 min on the aluminium plate, 2.90 min and 1.88 min on the pericarps of 'Kiyomi' (Citrus unshiu × C. sinensis) and 'Kawano-natsudaidai' (C. natsudaidai) respectively, and 2.42 min on the surface of 'Unshu-mikan' (C. unshiu). These findings confirmed a fungicidal effect of the plasma not only on an abiotic surface (aluminium plate) but also on a biotic surface (citrus fruit). Further development of the instrument by combining sorting systems with the plasma device promises an efficient means of disinfecting citrus fruits during food processing.
journal_name
AMB Expressjournal_title
AMB Expressauthors
Sakudo A,Yagyu Ydoi
10.1186/s13568-020-01177-2subject
Has Abstractpub_date
2021-01-09 00:00:00pages
16issue
1issn
2191-0855pii
10.1186/s13568-020-01177-2journal_volume
11pub_type
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