Investigation of deactivation of mold conidia by infrared heating in a model-based approach

Vipavee Trivittayasil, Tanaka Fumihiko, Toshitaka Uchino

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Concerns over chemical residue from chemical processing of fresh agricultural produces encourage the rise of alternative chemical-free methods. Infrared heating is a postharvest technique employed to reduce microbial load adhering on the surface of fresh fruits. The main purpose is to heat the produce surface to certain degree to achieve commercial sterilization while preventing quality degradation from overheating of internal tissue. In this study, we developed a microbial deactivation model combined with time-temperature profile of infrared heating with consideration of evaporation effect to evaluate the efficacy of the treatment and assess resulting surface temperature. Heating intensity controlled by heating distances was also investigated. As the result, the proposed model predicted the surface temperature profiles of potato dextrose agar (PDA) well at all points within a mean error of ±2.0 °C. The model will be able to apply for the surface decontamination of fruit and help to minimize microbial threats without heat damage to the quality.

Original languageEnglish
Pages (from-to)565-570
Number of pages6
JournalJournal of Food Engineering
Volume104
Issue number4
DOIs
Publication statusPublished - Jun 1 2011

Fingerprint

Fungal Spores
molds (fungi)
Heating
conidia
Fungi
heat
Temperature
Fruit
Hot Temperature
temperature profiles
surface temperature
Decontamination
Solanum tuberosum
processing chemistry
chemical residues
Agar
microbial load
decontamination
raw fruit
Glucose

All Science Journal Classification (ASJC) codes

  • Food Science

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Investigation of deactivation of mold conidia by infrared heating in a model-based approach. / Trivittayasil, Vipavee; Fumihiko, Tanaka; Uchino, Toshitaka.

In: Journal of Food Engineering, Vol. 104, No. 4, 01.06.2011, p. 565-570.

Research output: Contribution to journalArticle

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