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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Evaluation of calcium hydroxide, calcium hypochlorite, peracetic acid, and potassium bicarbonate as citrus fruit sanitizers

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Author(s):
Dilarri, Guilherme [1] ; Cavicchia Zamuner, Caio Felipe [1] ; Bacci Jr, Mauricio ; Ferreira, Henrique [2]
Total Authors: 4
Affiliation:
[1] Sao Paulo State Univ UNESP, Dept Gen & Appl Biol, Av 24A, 1515 Bela Vista, BR-13506900 Rio Claro, SP - Brazil
[2] Bacci Jr, Jr., Mauricio, Sao Paulo State Univ UNESP, Dept Gen & Appl Biol, Av 24A, 1515 Bela Vista, BR-13506900 Rio Claro, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE; JUN 2021.
Web of Science Citations: 0
Abstract

Xanthomonas citri (X. citri) is a quarentenary plant pathogen and the causal agent of the citrus canker. X. citri forms biofilms and remains fixed on the surface of plant tissues, especially on leaves and fruits. Considering this, all the citrus fruits have to be sanitized before they can be commercialized. NaOCl is the main sanitizer used to decontaminate fruits in the world. Due to its toxicity, treatment with NaOCl is no longer accepted by some Europe Union countries. Therefore, the aim of this work was to evaluate potassium bicarbonate (KHCO3), calcium hydroxide (Ca(OH)(2)), calcium hypochlorite (Ca(OCl)(2)) and peracetic acid (CH3CO3H) as alternatives to NaOCl for the sanitization of citrus fruit. By monitoring cell respiration and bacterial growth, we determined that peracetic acid and calcium hypochlorite exhibit bactericidal action against X. citri. Time-response growth curves and membrane integrity analyses showed that peracetic acid and calcium hypochlorite target the bacterial cytoplasmatic membrane, which is probably responsible for cell death in the first minutes of contact. The simulation of the sanitization process of citrus fruit in packinghouses showed that only peracetic acid exhibited a performance comparable to NaOCl. Among the tested compounds, peracetic acid constitutes an efficient and safer alternative to NaOCl. (AU)

FAPESP's process: 15/50162-2 - Protecting plants with antimicrobial peptides and gallates - Pro-Planta
Grantee:Henrique Ferreira
Support type: Research Projects - Thematic Grants
FAPESP's process: 17/07306-9 - Protection of citrus with antibacterial peptides and gallates
Grantee:Guilherme Dilarri
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 14/50880-0 - INCT 2014: comparative and functional genomics and citrus-assisted breeding
Grantee:Marcos Antonio Machado
Support type: Research Projects - Thematic Grants