Elisabeth Guichard

Dr. Elisabeth Guichard

Centre des Sciences du Goût et de l'Alimentation (CSGA), INRAE, Dijon, France

Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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2 July 2018 in Journal of Agricultural and Food Chemistry
Verified
Journal Article
Closed access
FCFrancis Canon
Francis Canon
FNFabrice Neiers
Fabrice Neiers
Elisabeth GuichardElisabeth Guichard
Elisabeth Guichard

2 September 2019 in Nutrients
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Journal Article
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TDThomas Delompré
Thomas Delompré
Elisabeth GuichardElisabeth Guichard
Elisabeth Guichard
LBLoic Briand
Loic Briand
Christian SallesChristian Salles
Christian Salles
Nutritional supplements are prescribed when one’s nutritional status is not conducive to good health. These foodstuffs constitute concentrated sources of nutrients such as vitamins, minerals, amino acids, and fatty acids. For nutritional supplements to be effective, patients must consume the amount that has been prescribed for the recommended period of time. Therefore, special attention must be given to the sensory attributes of these products. Indeed, the presence of active compounds can cause an off-taste or aftertaste. These negative sensations can lead to a reduction in the consumption of nutritional supplements and reduce the effectiveness of the treatment. In this manuscript, we provide an overview of the sensory characteristics and the sensing receptor mechanism of the main compounds present in oral nutritional supplements, such as amino acids, minerals, fatty acids, and vitamins. Part of this article is devoted to the development of new masking strategies and the corresponding potential influence at the industrial level.

18 December 2021 in Foods
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AKAdeline KAROLKOWSKI
Adeline KAROLKOWSKI
Elisabeth GuichardElisabeth Guichard
Elisabeth Guichard
LBLoic Briand
Loic Briand
Christian SallesChristian Salles
Christian Salles
The worldwide demand for pulse-based products is increasing in the face of climate change, but their acceptability is limited due to the presence of off-flavours. Off-notes contribute to negative perceptions of pulses (beany notes). Volatile compounds belong to a large variety of chemical classes. They are mainly produced from the oxidation of unsaturated free fatty acids and the degradation of amino acids during seed development, storage, and transformation (dehulling, milling, and starch or protein production). This review aims to provide an overview highlighting the identification of these molecules in different pulses, their potential origins, and their impact on perceptions. However, data on odour-active compounds in pulses are sparse, as they are limited to those of two studies on peas and lupins. A better knowledge of the volatile compounds involved in the off-notes and their origins should allow for drawing efficient strategies to limit their impact on overall perception for more acceptable healthy food design.

1 August 2018 in Food Chemistry
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Journal Article
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CBCarmen Barba
Carmen Barba
NBNoelle Beno
Noelle Beno
Elisabeth GuichardElisabeth Guichard
Elisabeth Guichard
TTThierry Thomas-Danguin
Thierry Thomas-Danguin

15 August 2019 in Food & Function
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TTThierry Thomas-Danguin
Thierry Thomas-Danguin
Elisabeth GuichardElisabeth Guichard
Elisabeth Guichard
Christian SallesChristian Salles
Christian Salles
Sequential processing leading to cross-modal interactions enhancing saltiness perception.

1 April 2014 in PLOS ONE
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GFGilles Feron
Gilles Feron
CACharfedinne Ayed
Charfedinne Ayed
EQEl Mostafa Qannari
El Mostafa Qannari
PCPhilippe Courcoux
Philippe Courcoux
HLHélène Labouré
Hélène Labouré
Elisabeth GuichardElisabeth Guichard
Elisabeth Guichard
For human beings, the mouth is the first organ to perceive food and the different signalling events associated to food breakdown. These events are very complex and as such, their description necessitates combining different data sets. This study proposed an integrated approach to understand the relative contribution of main food oral processing events involved in aroma release during cheese consumption. In vivo aroma release was monitored on forty eight subjects who were asked to eat four different model cheeses varying in fat content and firmness and flavoured with ethyl propanoate and nonan-2-one. A multiblock partial least square regression was performed to explain aroma release from the different physiological data sets (masticatory behaviour, bolus rheology, saliva composition and flux, mouth coating and bolus moistening). This statistical approach was relevant to point out that aroma release was mostly explained by masticatory behaviour whatever the cheese and the aroma, with a specific influence of mean amplitude on aroma release after swallowing. Aroma release from the firmer cheeses was explained mainly by bolus rheology. The persistence of hydrophobic compounds in the breath was mainly explained by bolus spreadability, in close relation with bolus moistening. Resting saliva poorly contributed to the analysis whereas the composition of stimulated saliva was negatively correlated with aroma release and mostly for soft cheeses, when significant.