Aplicacion de quitosano y sustancias GRAS en el control de Geotrichum candidum aislado de frutos de jitomate (Lycopersicum esculentum L.) en el estado de Nayarit, Mexico: Pruebas in vitro

Translated title of the contribution: Chitosan and GRAS substances application in the control of Geotrichum candidum isolated from tomato fruits (Lycopersicum esculentum L.) in the state of Nayarit, Mexico: In vitro tests

C. A. Rodríguez-Guzmán, B. Montaño-Leyva, J. A. Sánchez-Burgos, P. U. Bautista-Rosales, P. Gutierrez-Martinez*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Geotrichum candidum causal agent of tomato sour rot, has the potential to infect a wide variety of fruits and vegetables. In this work, the in vitro antifungal activity of Chitosan (Chi), Potassium Sorbate (PS), Sodium Bicarbonate (SB), and Sodium Carbonate (SC) and their mixtures were evaluated. The PS and SC treatments showed a 100% inhibition of mycelial growth (MG), germination, and sporulation. Regarding SB, 1.5 and 2.0% concentrations inhibited 87.5 and 88.5% of MG and affected germination and sporulation. Chi at 1.0, 1.5, and 2.0% inhibited MG by 63.1, 62.4, and 42.1%, respectively, affecting germination and sporulation. The combination of chitosan at 0.5% + PS 0.5% and Chi 0.5% + SC 0.5% demonstrated 99.3 and 71.4%, inhibition of MG, and affected germination and sporulation. Chi 0.5% + SB 1.5% showed no effect on MG, and at 0.5 and 1.0%, the growth rate of the mycelium increased, as well as sporulation and germination. In conclusion, chitosan and salts are an option for the use of synthetic fungicides in the control of pathogenic fungi in postharvest, with low toxicity, and are friendly to the environment.

Translated title of the contributionChitosan and GRAS substances application in the control of Geotrichum candidum isolated from tomato fruits (Lycopersicum esculentum L.) in the state of Nayarit, Mexico: In vitro tests
Original languageSpanish
Article numberBio2790
JournalRevista Mexicana de Ingeniera Quimica
Volume21
Issue number3
DOIs
StatePublished - 1 Sep 2022
Externally publishedYes

Bibliographical note

Funding Information:
The authors thank CONACYT for its financial support for the scholarship granted to the MCA Carlos Azhael Rodríguez Guzmán.

Publisher Copyright:
© 2022, Universidad Autonoma Metropolitana. All rights reserved.

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