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Lyousfi N, Legrifi I, Ennahli N, Blenzar A, Amiri S, Laasli SE, Handaq N, Belabess Z, Ait Barka E, Lahlali R. Evaluating Food Additives Based on Organic and Inorganic Salts as Antifungal Agents against Monilinia fructigena and Maintaining Postharvest Quality of Apple Fruit. J Fungi (Basel) 2023; 9:762. [PMID: 37504750 PMCID: PMC10381578 DOI: 10.3390/jof9070762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/19/2023] [Accepted: 07/13/2023] [Indexed: 07/29/2023] Open
Abstract
A set of commonly used food additives was evaluated for their antifungal activity against the brown rot disease of fruits caused by the fungal pathogen Monilinia fructigena, which is one of the most economically important agents, causing important damage to pome fruits, such as pears and apples. The radial mycelial growth of the fungal pathogen was assessed in PDA amended with different concentrations (0.5, 2, 2.5, and 5%) of each additive. The results underlined that most of the additives displayed a significant inhibition of mycelial growth, with the extent of inhibition varying depending on the specific additive and concentration used. Five food additives showed high inhibition rates (above 88%), of which sodium bicarbonate, sodium carbonate, copper sulphate, and sodium hydroxide were the most effective, whereas ammonium carbonate, magnesium chlorite, and citric acid were the least effective. Interestingly, the coatings containing sodium bicarbonate, copper sulphate, and ammonium bicarbonate significantly reduced the incidence of brown rot disease in apples, but other additives were not effective, such as ammonium carbonate and magnesium sulphate. The anhydrous sodium sulphate used at a concentration of 2%, was found to be one of the least effective additives, with a reduction rate of 20%. Subsequently, food additives showing good growth inhibition rates and reduction in disease severity were then tested in semi-commercial trials at temperatures of 4 °C and 22 °C. The results indicated that these additives demonstrate effectiveness in controlling M. fructigena at specific concentrations, and lower temperatures (4 °C) can improve the efficiency of the control measures. In addition, the selected food additives exhibited significant antimicrobial activity against M. fructigena, suggesting their application as a promising alternative for managing brown rot disease in apple fruits.
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Affiliation(s)
- Nadia Lyousfi
- Phytopathology Unit, Department of Plant Protection, Ecole National d'Agriculture de Meknès, Km 10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco
- Laboratory of Plant Protection and Environment, Faculty of Sciences, Moulay Ismail University, Zitoune, Meknès 11201, Morocco
| | - Ikram Legrifi
- Phytopathology Unit, Department of Plant Protection, Ecole National d'Agriculture de Meknès, Km 10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco
- Laboratory of Functional Ecology and Environmental Engineering, Sidi Mohamed Ben Abdellah University, Route d'Imouzzer, Fez 30000, Morocco
| | - Nabil Ennahli
- Phytopathology Unit, Department of Plant Protection, Ecole National d'Agriculture de Meknès, Km 10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco
| | - Abdelali Blenzar
- Laboratory of Plant Protection and Environment, Faculty of Sciences, Moulay Ismail University, Zitoune, Meknès 11201, Morocco
| | - Said Amiri
- Phytopathology Unit, Department of Plant Protection, Ecole National d'Agriculture de Meknès, Km 10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco
| | - Salah-Eddine Laasli
- Phytopathology Unit, Department of Plant Protection, Ecole National d'Agriculture de Meknès, Km 10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco
| | - Nadia Handaq
- Equipe de Recherche, Valorization et Protection des Plantes, Laboratoire de Biologie d'Environnement et Developpement Durable, Ecole Normale Supérieure de Tétouan, Abdelmalek Essaadi University, Tetouan BP 209 Martil, Martil 93150, Morocco
| | - Zineb Belabess
- Plant Protection Laboratory, Regional Center of Agricultural Research of Meknes, National Institute of Agricultural Research, Km 13, Route Haj Kaddour, BP.578, Meknes 50001, Morocco
| | - Essaid Ait Barka
- Unité de Recherche Résistance Induite et BioProtection des Plantes-EA 4707-USC INRAe1488, SFR Condorcet FR CNRS 3417, Faculty of Sciences, University of Reims Champagne-Ardenne, 51687 Reims, France
| | - Rachid Lahlali
- Phytopathology Unit, Department of Plant Protection, Ecole National d'Agriculture de Meknès, Km 10, Rte Haj Kaddour, BP S/40, Meknès 50001, Morocco
- Plant Pathology Laboratory, AgroBioSciences, College of Sustainable Agriculture and Environmental Sciences, Mohammed VI Polytechnic University, Lot 660, Hay Moulay Rachid, Ben Guerir 43150, Morocco
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