Pierre-André Marechal
University of Burgundy
41Publications
19H-index
1,099Citations
Publications 41
Newest
Published on Jun 1, 2019in Food Microbiology 4.09
Abstract In food industry and winemaking, the use of active dehydrated yeast (ADY) Saccharomyces cerevisiae is a frequent practice because of the long-term stability and high efficiency of ADY. Nowadays, there is an increasing interest for new yeasts strains, such as Torulaspora delbrueckii (Td), Metschnikowia pulcherrima (Mp) and Lachancea thermotolerans (Lt). However, the yeasts transformation processes into the solidified form generate several stresses that reduce the cell viability. In this ...
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Published on Aug 1, 2013in Food and Bioprocess Technology 3.00
Guillaume Da4
Estimated H-index: 4
(University of Burgundy),
Dominique Dufour20
Estimated H-index: 20
(International Center for Tropical Agriculture)
+ 7 AuthorsPierre-André Marechal19
Estimated H-index: 19
(University of Burgundy)
In the tropics, cassava starch is produced at artisanal and industrial scales. This paper focuses on a new methodology enabling the technoeconomical comparison of small-scale cassava starch manufacturing process (1–5 t of starch/day) in two markedly different contexts (Colombia and Vietnam). Measurements were conducted during trial runs for each unit operation (washing/pealing, rasping, extraction and separation). Starch mass balance was calculated from sample composition (moisture, starch and c...
7 Citations Source Cite
Published on Jan 1, 2012in Journal of Root Crops
Guillaume Da4
Estimated H-index: 4
,
Dominique Dufour20
Estimated H-index: 20
+ 3 AuthorsPierre-André Marechal19
Estimated H-index: 19
The cassava starch processing supply chain in Vietnam has rapidly changed over the past decade. The introduction of high yielding cassava varieties (KM 94, KM 60) with high starch content for industrial purposes has led to a complex situation, where both small and large scale producers have to tackle the burgeoning environmental issues. Three categories of small-sized wet starch extraction systems were identified in a cluster of root processing enterprises from the Red River Delta (Hoai Duc dist...
Published on Mar 1, 2012in Applied Microbiology and Biotechnology 3.34
Thi Minh Ngoc Ta3
Estimated H-index: 3
(Nha Trang University),
Lan Cao-Hoang8
Estimated H-index: 8
(Hanoi University of Science and Technology)
+ 5 AuthorsYves Waché24
Estimated H-index: 24
(University of Burgundy)
Based on the observation that shocks provoked by heat or amphiphilic compounds present some similarities, this work aims at studying whether cells grown on oleate (amphiphilic pre-stress) acquire a tolerance to heat shock. In rich media, changing glucose for oleate significantly enhanced the cell resistance to the shock, however, cells grown on a minimal oleate medium lost their ability to grow on agar with the same kinetic than glucose-grown cells (more than 7-log decrease in 18 min compared wi...
6 Citations Source Cite
Published on Jul 1, 2010in Applied Microbiology and Biotechnology 3.34
Thi Minh Ngoc Ta3
Estimated H-index: 3
(University of Burgundy),
Lan Cao-Hoang8
Estimated H-index: 8
(Hanoi University)
+ 6 AuthorsYves Waché24
Estimated H-index: 24
(University of Burgundy)
In hydrophobic compounds biotechnology, medium-chain-length metabolites often perturb cell activity. Their effect is usually studied in model conditions of growth in glucose media. Here, we study whether culture on lipids has an impact on the resistance of Yarrowia lipolytica to such compounds: Cells were cultured on glucose or oleate and submitted to γ-dodecalactone. After a 60-min exposure to 3 g L−1, about 80% of the glucose-grown cells (yeast extract peptone dextrose (YPD) cells) had lost th...
18 Citations Source Cite
Published on Nov 1, 2010in Process Biochemistry 2.62
Guillaume Da1
Estimated H-index: 1
(University of Burgundy),
Eric Ferret8
Estimated H-index: 8
(University of Burgundy)
+ 3 AuthorsDominique Dufour20
Estimated H-index: 20
(International Center for Tropical Agriculture)
The purpose of this study was to model the extraction unit operation of the cassava starch manufacturing process and to propose a realistic recycling simulation in order to reduce the volumes of effluents. The model was developed from reactors which are commonly used for cassava starch extraction at a household scale in Vietnam. The reactors were tested using inflow starch as a marker at the beginning of the batch process. The experimental residence time distribution (RTDexp) was calculated by t...
7 Citations Source Cite
Published on May 1, 2008in Applied Microbiology and Biotechnology 3.34
Lan Cao-Hoang8
Estimated H-index: 8
(Hanoi University),
Pierre-André Marechal19
Estimated H-index: 19
(University of Burgundy)
+ 1 AuthorsPatrick Gervais37
Estimated H-index: 37
(University of Burgundy)
The effect of rapid and slow chilling on survival and nisin sensitivity was investigated in Escherichia coli. Membrane permeabilization induced by cold shock was assessed by uptake of the fluorescent dye 1-N-phenylnapthylamine. Slow chilling (2°C min−1) did not induce transient susceptibility to nisin. Combining rapid chilling (2,000°C min−1) and nisin causes a dose-dependent reduction in the population of cells in both exponential and stationary growth phases. A reduction of 6 log of exponentia...
18 Citations Source Cite
Published on Jan 1, 2008in Applied Microbiology and Biotechnology 3.34
Lan Cao-Hoang8
Estimated H-index: 8
(Hanoi University),
F. Dumont1
Estimated H-index: 1
(University of Burgundy)
+ 2 AuthorsPatrick Gervais37
Estimated H-index: 37
(University of Burgundy)
The effects of slow chilling (2°C min−1) and rapid chilling (2,000°C min−1) were investigated on the survival and membrane fluidity of Escherichia coli, of Bacillus subtilis, and of Saccharomyces cerevisiae. Cell death was found to be dependent on the physiological state of cell cultures and on the rate of temperature downshift. Slow temperature decrease allowed cell stabilization, whereas the rapid chilling induced an immediate loss of viability of up to more than 90 and 70% for the exponential...
25 Citations Source Cite
Published on Jul 1, 2008in Starch-starke 2.17
Guillaume Da4
Estimated H-index: 4
,
Dominique L. Dufour1
Estimated H-index: 1
(International Center for Tropical Agriculture)
+ 2 AuthorsPierre-André Marechal19
Estimated H-index: 19
(École nationale supérieure de biologie appliquée à la nutrition et à l'Alimentation)
In Northern Vietnam, small-scale cassava starch processing is conducted in densely populated craft villages, where processors face difficulties to expand their activities. Three different processing systems were studied among a cluster of three communes in the Red River Delta, producing up to 430 t of starch (at 55% dry matter) per day. The first system, type A, is a cylindrical rasper and a manual sieve, the second, type B, is a cylindrical rasper and stirring-filtering machine and the third, t...
8 Citations Source Cite
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