A study on the physicochemical parameters for Penicillium expansum growth and patulin production: effect of temperature, pH, and water activity

Joanna Tannous; Ali Atoui; André El Khoury; Ziad Francis; Isabelle P. Oswald; Olivier Puel; Roger Lteif

doi:10.1002/fsn3.324

A study on the physicochemical parameters for Penicillium expansum growth and patulin production: effect of temperature, pH, and water activity

Joanna Tannous
, Ali Atoui
, André El Khoury
, Ziad Francis
, Isabelle P. Oswald
, Olivier Puel
, Roger Lteif

Synthetic Biology

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

Penicillium expansum is among the most ubiquitous fungi disseminated worldwide, that could threaten the fruit sector by secreting patulin, a toxic secondary metabolite. Nevertheless, we lack sufficient data regarding the growth and the toxigenesis conditions of this species. This work enables a clear differentiation between the favorable conditions to the P. expansum growth and those promising for patulin production. A mathematical model allowing the estimation of the P. expansum growth rate according to temperature, a_W, and pH, was also developed. An optimal growth rate of 0.92 cm/day was predicted at 24°C with pH level of 5.1 and high a_W level of 0.99. The model's predictive capability was tested successfully on artificial contaminated apples. This model could be exploited by apple growers and the industrialists of fruit juices in order to predict the development of P. expansum during storage and apple processing.

Original language	English
Pages (from-to)	611-622
Number of pages	12
Journal	Food Science and Nutrition
Volume	4
Issue number	4
DOIs	https://doi.org/10.1002/fsn3.324
State	Published - Jul 1 2016

Keywords

Growth rate
Penicillium expansum
pH
patulin production
predictive mycology
temperature
water activity

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10.1002/fsn3.324

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title = "A study on the physicochemical parameters for Penicillium expansum growth and patulin production: effect of temperature, pH, and water activity",

abstract = "Penicillium expansum is among the most ubiquitous fungi disseminated worldwide, that could threaten the fruit sector by secreting patulin, a toxic secondary metabolite. Nevertheless, we lack sufficient data regarding the growth and the toxigenesis conditions of this species. This work enables a clear differentiation between the favorable conditions to the P. expansum growth and those promising for patulin production. A mathematical model allowing the estimation of the P. expansum growth rate according to temperature, aW, and pH, was also developed. An optimal growth rate of 0.92 cm/day was predicted at 24°C with pH level of 5.1 and high aW level of 0.99. The model's predictive capability was tested successfully on artificial contaminated apples. This model could be exploited by apple growers and the industrialists of fruit juices in order to predict the development of P. expansum during storage and apple processing.",

keywords = "Growth rate, Penicillium expansum, pH, patulin production, predictive mycology, temperature, water activity",

author = "Joanna Tannous and Ali Atoui and \{El Khoury\}, Andr{\'e} and Ziad Francis and Oswald, \{Isabelle P.\} and Olivier Puel and Roger Lteif",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors. Food Science \& Nutrition published by Wiley Periodicals, Inc.",

year = "2016",

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doi = "10.1002/fsn3.324",

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AU - Tannous, Joanna

AU - Atoui, Ali

AU - El Khoury, André

AU - Francis, Ziad

AU - Oswald, Isabelle P.

AU - Puel, Olivier

AU - Lteif, Roger

PY - 2016/7/1

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N2 - Penicillium expansum is among the most ubiquitous fungi disseminated worldwide, that could threaten the fruit sector by secreting patulin, a toxic secondary metabolite. Nevertheless, we lack sufficient data regarding the growth and the toxigenesis conditions of this species. This work enables a clear differentiation between the favorable conditions to the P. expansum growth and those promising for patulin production. A mathematical model allowing the estimation of the P. expansum growth rate according to temperature, aW, and pH, was also developed. An optimal growth rate of 0.92 cm/day was predicted at 24°C with pH level of 5.1 and high aW level of 0.99. The model's predictive capability was tested successfully on artificial contaminated apples. This model could be exploited by apple growers and the industrialists of fruit juices in order to predict the development of P. expansum during storage and apple processing.

AB - Penicillium expansum is among the most ubiquitous fungi disseminated worldwide, that could threaten the fruit sector by secreting patulin, a toxic secondary metabolite. Nevertheless, we lack sufficient data regarding the growth and the toxigenesis conditions of this species. This work enables a clear differentiation between the favorable conditions to the P. expansum growth and those promising for patulin production. A mathematical model allowing the estimation of the P. expansum growth rate according to temperature, aW, and pH, was also developed. An optimal growth rate of 0.92 cm/day was predicted at 24°C with pH level of 5.1 and high aW level of 0.99. The model's predictive capability was tested successfully on artificial contaminated apples. This model could be exploited by apple growers and the industrialists of fruit juices in order to predict the development of P. expansum during storage and apple processing.

KW - Growth rate

KW - Penicillium expansum

KW - pH

KW - patulin production

KW - predictive mycology

KW - temperature

KW - water activity

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SN - 2048-7177

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ER -

A study on the physicochemical parameters for Penicillium expansum growth and patulin production: effect of temperature, pH, and water activity

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Keywords

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