Sabine Schorr‐Galindo

Centre de Coopération Internationale en Recherche Agronomique pour le Développement

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Angélique Fontana

Centre de Coopération Internationale en Recherche Agronomique pour le Développement

Caroline Strub

Institut Agro Montpellier

Noël Durand

Centre de Coopération Internationale en Recherche Agronomique pour le Développement

ÓG

Óscar González-Ríos

Tecnológico Nacional de México

Mirna Leonor Suárez-Quiroz

Instituto Tecnologico de Veracruz

Bernard Guyot

Hôpital d'Instruction des Armées Sainte-Anne

J. P. Guiraud

Université de Montpellier

Michel Barel

Centre de Coopération Internationale en Recherche Agronomique pour le Développement

Joseph‐Pierre Guiraud

Université de Montpellier

Philippe Dantigny

Laboratoire de Biodiversité et Biotechnologies Microbiennes

Cooperative Institutions

Université de Montpellier

Centre de Coopération Internationale en Recherche Agronomique pour le Développement

Institut Agro Montpellier

UMR QualiSud

Institut de Recherche pour le Développement

Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement

Université d'Avignon et des Pays de Vaucluse

L'Institut Agro

Agropolis International

Animal, Santé, Territoires, Risques et Ecosystèmes

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Characterization of aroma potential of apricot varieties using different extraction techniques

Food Chemistry (2007)

H.M. Solis-Solis Montserrat Calderón‐Santoyo Sabine Schorr‐Galindo Guadalupe Luna‐Solano Juan Arturo Ragazzo‐Sánchez

Fraction (chemistry)

Solid-Phase Microextraction

Terpene

Solid phase extraction

10.1016/j.foodchem.2007.01.061

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Citations (66)

Differentiation and quantification of the ochratoxin A producers Aspergillus ochraceus and Aspergillus westerdijkiae using PCR‐DGGE

Journal of Basic Microbiology (2018)

Noël Durand Angélique Fontana Jean‐Christophe Meile Mirna Leonor Suárez-Quiroz Sabine Schorr‐Galindo

Ochratoxin A (OTA) is a nephrotoxic, teratogenic, immunotoxic, and carcinogenic mycotoxin which is produced in tropical zones mainly by Aspergillus carbonarius , A. niger , A. ochraceus, and A. westerdijkiae. A. ochraceus and A. westerdijkiae species are phenotypically and genomically very close but A. westerdijkiae produce OTA at a very higher level than A. ochraceus . These species have been differentiated recently. The DNA primer pairs which were drawn so far are not specific and a genomic region of the same size is amplified for both species or they are too specific, and in this case, the DNA of a single species is amplified. To help preventing OTA contamination of foodstuffs, the PCR‐DGGE (Denaturing Gradient Gel Electrophoresis) method was used to discriminate between A. ochraceus and A. westerdijkiae DNA fragments of the same size but with different sequences and thus faster access to a diagnosis of the toxigenic potential of the fungal microflora. The proposed methodology was able to differentiate A. westerdijkiae from A. ochraceus with only one primer pairs in a single run. A calibration based on initial DNA content was obtained from image analysis of the DGGE gels and a method of quantification of the two strains was proposed.

Aspergillus ochraceus

Ochratoxins

Primer (cosmetics)

genomic DNA

10.1002/jobm.201800172

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Citations (4)

Effect of chemical and environmental factors on Aspergillus ochraceus growth and toxigenesis in green coffee

Food Microbiology (2004)

Mirna Leonor Suárez-Quiroz Óscar González-Ríos Michel Barel Bernard Guyot Sabine Schorr‐Galindo

Aspergillus ochraceus

Water activity

10.1016/j.fm.2004.03.005

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Citations (62)

Biocontrol Agents: Toolbox for the Screening of Weapons against Mycotoxigenic Fusarium

Journal of Fungi (2021)

Lucile Pellan Cheikh Ahmeth Tidiane Dieye Noël Durand Angélique Fontana Caroline Strub

The aim of this study was to develop a set of experiments to screen and decipher the mechanisms of biocontrol agents (BCAs), isolated from commercial formulation, against two major mycotoxigenic fungi in cereals, Fusarium graminearum and Fusarium verticillioides. These two phytopathogens produce mycotoxins harmful to human and animal health and are responsible for the massive use of pesticides, for the protection of cereals. It is therefore essential to better understand the mechanisms of action of alternative control strategies such as the use of BCAs in order to optimize their applications. The early and late stages of interaction between BCAs and pathogens were investigated from germination of spores to the effects on perithecia (survival form of pathogen). The analysis of antagonist activities of BCAs revealed different strategies of biocontrol where chronological, process combination and specialization aspects of interactions are discussed. Streptomyces griseoviridis main strategy is based on antibiosis with the secretion of several compounds with anti-fungal and anti-germination activity, but also a mixture of hydrolytic enzymes to attack pathogens, which compensates for an important deficit in terms of spatial colonization capacity. It has good abilities in terms of nutritional competition. Trichoderma asperellum is capable of activating a very wide range of defenses and attacks combining the synthesis of various antifungal compounds (metabolite, enzymes, VOCs), with different targets (spores, mycelium, mycotoxins), and direct action by mycoparasitism and mycophagy. Concerning Pythium oligandrum, its efficiency is mainly due to its strong capacity to colonize the environment, with a direct action via microbial predation, stimulation of its reproduction at the contact of pathogens and the reduction of perithecia formation.

Antibiosis

Spore germination

Trichoderma

10.3390/jof7060446

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Citations (19)

Microbial exopolysaccharides: Main examples of synthesis, excretion, genetics and extraction

Carbohydrate Polymers (2011)

Florentin Donot Angélique Fontana J.C. Baccou Sabine Schorr‐Galindo

Industrial microbiology

Extreme environment

10.1016/j.carbpol.2011.08.083

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Citations (525)

Microbial Characterization of Organic Amendments and Their Potential for Biocontrol of Phytopathogenic and Mycotoxigenic Fungi in Amended Soils

CRC Press eBooks (2021)

Caroline Strub Phuong-Anh Nguyen Sabine Schorr‐Galindo Angélique Fontana

Fungal pathogens are an international concern regarding their impact on numerous crops with diseases such as the Fusarium wilt, grey molds, blue molds or downy mildews that cause colossal yield losses both at pre- and post-harvest stages all over the world. The fungal diseases are usually associated with the infection and accumulation of mycotoxins in plant products and derivate foods. Alternative approaches of biological control that are non-chemical and eco-friendly have been studied such as the crop rotations or the application of organic phyto-protective amendments using living organisms. Many different bacterial families have been identified but accounting for low abundance in the total communities. The participation of the predominant families in 3-day-old soil decreased after 28 days of incubation. The fungal community of the reference soil was more diversified as compared to the fungal communities of the amendments.

10.1201/9781003176046-4

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Antagonistic activity of soil actinobacteria to control fungal pathogens and mycotoxins risk on wheat

Ixchel Campos Avelar Alexandre Colas de la Noue Angélique Fontana Caroline Strub Noël Durand

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Mycotoxins during Consumer Food Storage

CRC Press eBooks (2021)

Philippe Dantigny Monika Conika Angélique Fontana Sabine Schorr‐Galindo

In the farm to fork approach, the consumer is a key element at the end of the food chain. Food safety needs to be ensured and recommendations have to be provided to consumers. Many recommendations exist but they are mainly directed to preserve foods from pathogenic bacteria, viruses and parasites. Some chemical hazards, in particular mycotoxins, are produced by biological agents as. molds, mainly Penicillium, Aspergillus and Fusarium species. European regulations set maximum levels for certain mycotoxins, but this cannot be done at the consumer level. In the case of mold-contaminated foods, they generally have a negative impact on product quality as consumers can easily detect visible fungal mycelium that develops on food surfaces. In most cases, foods are either discarded or trimmed. In fact, consumers often lack knowledge to handle moldy foods safely and they are unaware as to whether the contaminating mold is mycotoxigenic. If a mycotoxigenic mold is present, mycotoxins can potentially be produced and migrate into the product. Therefore, it is necessary to study mycotoxin migration in foods by quantifying their concentration and by correlating these concentrations to simple observations that can be made by consumers (i.e. visual aspect of fungal growth). Safe recommendations about moldy foods could be provided only after this step using scientific studies.

Patulin

10.1201/9781003035817-3

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Citations (1)

Rapid analysis and quantification of major neutral lipid species and free fatty acids by HPLC‐ELSD from microalgae

European Journal of Lipid Science and Technology (2016)

Florentin Donot Caroline Strub Angélique Fontana Nicolas Jouy Christelle Delbes

A method based on normal‐phase high performance liquid chromatography combined with evaporative light‐scattering detector was developed to quantify major neutral lipids from microalgae. A binary gradient enabled a good resolution of hydrocarbons and major neutral lipids by classes in less than 13 min. A good linearity was observed from 0.9 to 30 μg. Limits of detection (LOD) and quantification (LOQ) was from 3 to 64 ng depending on the analyte. The intra‐ and inter‐run precision (% RSD) of analysis was found less than 10%. The method was successfully applied to microalgae lipid extracts from Botryococcus braunii , Chlorella vulgaris , Spirulina platensis , and Porphyridium cruentum . B. braunii was distinguished by the highest levels of lipids, triacylglycerol (TAGs), and diacylglycerol (DAGs) being the major compounds. Practical applications: Neutral lipids produced by the microalgae are an interesting way for the development of biofuel from renewable carbon. A simple quantification of these lipids is important in the implementation of oleaginous microalgae screening as well as in the bioprocess optimization of algal lipid production. Besides, determining quantitatively the major lipid classes provides information in the understanding of the biosynthetic pathways and the accumulation of these lipids in relation with algal culture conditions. Normal‐phase HPLC conditions were studied to establish a method allowing a rapid separation of TAGs, DAGs, MAGs, and FFA but also HC by classes in a single run. Their quantification through evaporative light‐scattering detector (ELSD) was performed. The developed method was applied on lipid extracts from the different algal cultures.

Chromatography detector

Botryococcus braunii

Chlorella vulgaris

Photobioreactor

10.1002/ejlt.201500545

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Citations (12)

Climate effect on Aspergillus flavus and aflatoxins occurrence in Pearl millet (Pennisetum glaucum) from Tunisia

Hela Houissa Salma Lasram Caroline Strub Michael Sulyok Bojan Šarkanj

Pennisetum

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