Gaseous Chlorine Dioxide Treatment Suppresses Decay and Microbial Growth in Cold-stored Jujube Fruit

Hyowon Park; Chul-Woo Kim; Narae Han; Minjae Jeong; Uk Lee

doi:10.7235/HORT.20200078

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2020 Vol.38, Issue 6 Preview Page Next Page

Research Article

Gaseous Chlorine Dioxide Treatment Suppresses Decay and Microbial Growth in Cold-stored Jujube Fruit

31 December 2020. pp. 860-869

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Abstract

Gaseous chlorine dioxide (ClO₂) fumigation is widely used in various industries as a strong oxidizing and sanitizing agent to eliminate harmful microorganisms. Here, we investigated the effectiveness of ClO₂ fumigation in suppressing decay and microbial growth in jujube fruit during cold storage. ClO₂ fumigation significantly reduced the decay incidence of jujube fruit; in particular, treatment with 30 mg·L^-1 and 50 mg·L^-1 ClO₂ maintained the decay rate below 7.0% for up to 4 weeks of storage, whereas the decay rate of the control was approximately 20%. Moreover, the decay rate of fruit treated with 50 mg·L^-1 ClO₂ was maintained below 20% until the end of storage (6 weeks). In addition, 50 mg·L^-1 fumigation completely prevented aerobic bacterial growth during the first 2 weeks of storage; after 6 weeks, the aerobic bacteria count in the groups treated with 30 mg·L^-1 and 50 mg·L^-1 ClO₂ was 2.4 log colony-forming units per gram, which was 30% lower than that of the control. Total yeast and mold growth were also well controlled during storage, even with only 10 mg·L^-1 of gaseous ClO₂ fumigation. These data demonstrate that 30 - 50 mg·L^-1 of gaseous ClO₂ fumigation suppressed postharvest jujube fruit decay by controlling fungal and bacterial growth on the surface, and it is recommended as an effective method to maintain crop quality.

Keywords

aerobic bacteria

cold storage

fruit quality

fumigation

mold

postharvest

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Information

Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
Publisher(Ko) :한국원예학회
Journal Title :Horticultural Science and Technology
Journal Title(Ko) :원예과학기술지
Volume : 38
No :6
Pages :860-869
Received Date : 2020-04-20
Revised Date : 2020-07-20
Accepted Date : 2020-08-20
DOI :https://doi.org/10.7235/HORT.20200078

Horticultural Science and Technology 원예과학기술지 ISSN:1226-8763(Print) 2465-8588(Online)

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