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Estimating CO2 and VOCs production of Colletotrichum fragariae and Rhizopus stolonifer grown in cold stored strawberry fruit.

Authors
  • Rojas-Flores, Claudia1
  • Ventura-Aguilar, Rosa Isela2
  • Bautista-Baños, Silvia1
  • Revah, Sergio3
  • Saucedo-Lucero, José Octavio4
  • 1 Centro de Desarrollo de Productos Bióticos, Instituto Politécnico Nacional, Yautepec-Jojutla Km. 6, San Isidro, Yautepec, Morelos, 62731, Mexico. , (Mexico)
  • 2 CONACYT-Centro de Desarrollo de Productos Bióticos, Instituto Politécnico Nacional, Yautepec-Jojutla Km. 6, San Isidro, Yautepec, Morelos, 62731, Mexico. Electronic address: [email protected] , (Mexico)
  • 3 Universidad Autónoma Metropolitana-Cuajimalpa, Departamento de Procesos y Tecnología, Avenida Vasco Quiroga 4871, Colonia Santa Fe, Cuidad de México 05348, Mexico. , (Mexico)
  • 4 Universidad Autónoma Metropolitana-Cuajimalpa, Departamento de Procesos y Tecnología, Avenida Vasco Quiroga 4871, Colonia Santa Fe, Cuidad de México 05348, Mexico; CIATEC AC, Centro de Innovación Aplicada en Tecnologías Competitivas, Omega 201, León, Guanajuato, 37545, Mexico. , (Mexico)
Type
Published Article
Journal
Microbiological research
Publication Date
Nov 01, 2019
Volume
228
Pages
126327–126327
Identifiers
DOI: 10.1016/j.micres.2019.126327
PMID: 31499402
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The aim of this work was to investigate the early detection of anthracnose and soft rot diseases in cold stored strawberry fruit by evaluating the CO2 and volatile organic compounds (VOCs) released by the fungi Colletotrichum fragariae and Rhizopus stolonifer. Strawberries were stored at 5, 10 and 21 °C (control group) and the VOCs and CO2 production of inoculated and non-inoculated strawberries were followed by gas chromatography. To evaluate and estimate the growth of both fungi, the CO2 data were fitted to the Gompertz model. Data of the VOCs released at the end of the fungal growth were analyzed using principal components analysis (PCA) to discriminate between infected and non-infected strawberries. The results showed that fungal growth was affected by temperature and C. fragariae had a maximum growth after 14.6 h at 5 °C and R. stolonifer at 21 °C after 45.2 h. On the other hand, through VOCs released by C. fragariae and R. stolonifer and PCA, four groups were obtained: a) strawberry infected with C. fragariae, stored at 10 °C, b) strawberry infected with R. stolonifer, stored at 21 °C, c) control group kept at 10 °C and, d) strawberry infected with C. fragariae and control group (5 and 21 °C), and strawberry infected with R. stolonifer at 5 and 10 °C. In conclusion, CO2 and VOCs released by C. fragariae and R. stolonifer on strawberries could infer the presence of anthracnose and soft rot during storage of the fruit at low temperature. Copyright © 2019 Elsevier GmbH. All rights reserved.

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