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Sanitation of fresh green asparagus and green onions inoculated with Salmonella

Author

Listed:
  • Miguel A. Martínez-Téllez

    (Coordinación de Tecnología de Alimentos de Origen Vegetal)

  • Francisco J. Rodríguez-Leyva

    (Unión Agrícola Regional de Productores de Hortalizas y Frutas de San Luís Río Colorado, Carretera a Riíto, Colonia La Mesa, San Luís Río Colorado, Sonora, México)

  • Ilce E. Espinoza-Medina

    (Unión Agrícola Regional de Productores de Hortalizas y Frutas de San Luís Río Colorado, Carretera a Riíto, Colonia La Mesa, San Luís Río Colorado, Sonora, México)

  • Irasema Vargas-Arispuro

    (Coordinación de Ciencias de los Alimentos. Centro de Investigación en Alimentación y Desarrollo, A.C., Hermosillo, Sonora, México)

  • Alfonso A. Gardea

    (Coordinación de Tecnología de Alimentos de Origen Vegetal)

  • Gustavo A. González-Aguilar

    (Coordinación de Tecnología de Alimentos de Origen Vegetal)

  • J. Fernando Ayala-Zavala

    (Coordinación de Tecnología de Alimentos de Origen Vegetal)

Abstract

The absence of good agricultural and manufacturing practices in the production and postharvest handling of fresh produce, such as green asparagus or green onions increase the contamination risk by biological hazards like Salmonella. The objective of this work was to investigate the efficacy of chlorine (200 and 250 ppm), hydrogen peroxide (1.5% and 2%), and lactic acid (1.5% and 2%) sanitisers during different exposure times (40, 60, and 90 s) on the reduction of Salmonella enterica subspecie enterica serovar Typhimurium in inoculated fresh green asparagus and green onions. Washing with clean water only reduced < 1 log10 CFU/g in both vegetables. The most effective sanitiser evaluated for fresh green asparagus and green onions disinfection appeared to be 2% lactic acid reducing Salmonella growth close to 3 log10 CFU/g. Hydrogen peroxide was the least effective agent for Salmonella Typhimurium reduction. No effect was observed of the exposure time of inoculated product to sanitiser up to 90 seconds. These results confirm that lactic acid could be used as an alternative for fresh green asparagus and green onions sanitation.

Suggested Citation

  • Miguel A. Martínez-Téllez & Francisco J. Rodríguez-Leyva & Ilce E. Espinoza-Medina & Irasema Vargas-Arispuro & Alfonso A. Gardea & Gustavo A. González-Aguilar & J. Fernando Ayala-Zavala, 2009. "Sanitation of fresh green asparagus and green onions inoculated with Salmonella," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 27(6), pages 454-462.
    • Handle: RePEc:caa:jnlcjf:v:27:y:2009:i:6:id:138-2008-cjfs
    DOI: 10.17221/138/2008-CJFS
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    References listed on IDEAS

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    1. Cuite, Cara L. & Schefske, Scott D. & Randolph, Elizabeth M. & Hooker, Neal H. & Nucci, Mary L. & Hallman, William K., 2009. "Public Response to the Salmonella Saintpaul Outbreak of 2008," Research Reports 310307, Rutgers University, Food Policy Institute.
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