Effect of the Lactoperoxidase System against Three Major Causal Agents of Disease in Mangoes
| Autor: | Didier Montet, Gérard Loiseau, Manuel Dornier, Marie-Noelle Ducamp, Doan Duy Le Nguyen |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Mangue
Péroxydase Glomerella cingulata Colony Count Microbial Xanthomonas campestris Microbiology chemistry.chemical_compound Maladie des plantes Ascomycota Food Preservation Botany Colletotrichum Lactoperoxidase Food science Propriété antimicrobienne Hydrogen peroxide Plant Diseases Mangifera biology Botryodiplodia theobromae Contrôle de maladies Hydrogen-Ion Concentration biology.organism_classification Anti-Bacterial Agents chemistry Food Microbiology Q03 - Contamination et toxicologie alimentaires Postharvest Antibacterial activity Oxidation-Reduction Food Science Black spot |
| Zdroj: | Journal of Food Protection Scopus-Elsevier |
| ISSN: | 0362-028X |
| DOI: | 10.4315/0362-028x-68.7.1497 |
| Popis: | The antibacterial activity of the lactoperoxidase system (LPS) on the growth of Xanthomonas campestris, the causal agent of bacterial black spot in mangoes, Botryodiplodia theobromae, the causal agent of stem-end rot disease in mangoes, and Colletotrichum gloeosporioides, the causal agent of anthracnose disease in mangoes, was determined during culture at 30 degrees C and at several pH values (4.5, 5.5, and 6.5). When the results of using the LPS were compared with those from control cultures without the LPS reagents, the growth of the three microorganisms was totally inhibited in all of the conditions tested. Viability tests enumerating cultivable cells of X. campestris showed that the LPS had a bactericidal effect, whatever the pH value. This effect is faster at pH 5.5, corroborating the results reported in the literature (optimal pH for the LPS efficiency). Further, we proved that hydrogen peroxide alone had little inhibition effect on the growth of the microorganisms studied. This compound is essentially used to convert thiocyanate into hypothiocyanate during the lactoperoxidase reaction. The potential of the LPS for the postharvest treatment of the fruits for controlling microbial diseases was thus demonstrated. Nevertheless, further studies are needed on fresh fruits before envisaging any application. |
| Databáze: | OpenAIRE |
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