References of "Destain, Jacqueline"
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See detailBacteriocin producers from traditional food products
Diop, Michel Bakar; Dubois Dauphin, Robin ULg; Tine, Emmanuel et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2007), 11(4), 275-281

A total of 220 strains of LAB isolated from 32 samples of traditional fermented food from Senegal were screened for bacteriocin production. Two bacteriocin producers, Lactococcus lactis subsp. lactis and ... [more ▼]

A total of 220 strains of LAB isolated from 32 samples of traditional fermented food from Senegal were screened for bacteriocin production. Two bacteriocin producers, Lactococcus lactis subsp. lactis and Enterococcus faecium, were identifi ed from 12 bacteriocin-producing isolates on the basis of phenotypic analyses and 16S rDNA sequence. Both bacteriocins produced by new isolates show antimicrobial activity against Listeria monocytogenes and Bacillus coagulans whereas only that produced by Lactococcus lactis has an activity against Bacillus cereus. Bacteriocin-producing Lactococcus lactis strains were found in a variety of traditional foods indicating a high potential of growth of this strain in variable ecological complex environment. Partial 16S rDNA of the two bacteriocin producers obtained in this study has been registered to Genbank databases under the accession number AY971748 for Lactococcus lactis subsp. lactis (named CWBI-B1410) and AY971749 for Enterococcus faecium (named CWBI-B1411). The new bacteriocin-producing Lactococcus lactis subsp. lactis strain has been selected for identification and application of the bacteriocin to food preservation. [less ▲]

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See detailChromatographic, Spectrometric and NMR Characterization of a New Set of Glucuronic Acid Esters Synthesized by Lipase
Moreau, Benoît; Lognay, Georges ULg; Blecker, Christophe ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2007), 11(1), 9-17

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See detailStorage Of Yarrowia Lipolytica Lipase After Spray-Drying In The Presence Of Additives
Alloue, Wam.; Destain, Jacqueline ULg; Amighi, K. et al

in Process Biochemistry (2007), 42(9),

Lipase from Yarrowia lipolytica is an enzyme that presents numerous potentialities for biotechnological applications. This work describes the development of powders obtained by atomization of supernatants ... [more ▼]

Lipase from Yarrowia lipolytica is an enzyme that presents numerous potentialities for biotechnological applications. This work describes the development of powders obtained by atomization of supernatants lipase from Y. lipolytica LGx6481. Two formulations were studied: one formulation with skim milk powder and gum arabic, and the other with maltodextrin, calcium chloride and gum arabic. After drying, powders were stored at 4 and 20 8C in aluminium hermetic bags to evaluate their stability over a period of one year. The influence of water activity and glass transition temperature (Tg) on the powder’s storage were also studied. [less ▲]

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See detailXylanase production by Penicillium canescens in solid-state fermentation.
Assamoi, A.; Destain, Jacqueline ULg; Thonart, Philippe ULg

Poster (2006, October)

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See detailFormulation de la lipase de Yarrowia lipolytica
Alloue Waze, M.; Destain, Jacqueline ULg; Thonart, Philippe ULg

Poster (2006, September)

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See detailSelection of bacteriocin-producing lactic acid bacteria from Senegal traditional fermented food
Diop, M.; Dubois Dauphin, Robin ULg; Tine, E. et al

Poster (2006, September)

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See detailImmobilisation de la lipase de Yarrowia lipolytica.
Kabran, P.; Alloue, M.; Destain, Jacqueline ULg et al

Poster (2006, September)

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See detailProduction and down-stream processing of an extracellular lipase from the yeast Yarrowia lipolytica
Fickers, Patrick ULg; Ongena, MARC ULg; Destain, Jacqueline ULg et al

in Enzyme & Microbial Technology (2006), 38(6), 756-759

Lipase constitutes an interesting class of enzyme with many biotechnological applications. However, the development of a fruitful process must be set up to obtained a product compatible with the ... [more ▼]

Lipase constitutes an interesting class of enzyme with many biotechnological applications. However, the development of a fruitful process must be set up to obtained a product compatible with the industrial and commercial needs. Here, we report the development of such a process for the extracellular lipase secreted by the yeast Yarrowia lipolytica. The enzyme production, carried out in a 2000 L bioreactor, led to a lipase activity of approximately 1100 U mL(-1) after 53 h of fermentation. The post-culture treatment, consisting of a centrifugation, a filtration and an ultra-filtration steps, led to 15-fold volume reduction and a 8-fold increased of the lipase activity. Finally, addition of 12% of milk powder and 3% of gum arabic before spray-drying dehydration led to a stable powder with a lipolytic activity of 37,500 U g D.W.(-1). (c) 2005 Elsevier Inc. All rights reserved. [less ▲]

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See detailBacteriocin Activity By Lactobacillus Curvatus Cwbi-B28 To Inactivate Listeria Monocytogenes In Cold-Smoked Salmon During 4 Degrees C Storage
Ghalfi, H.; Allaoui, A.; Destain, Jacqueline ULg et al

in Journal of Food Protection (2006), 69(5),

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See detailStochastic models to study the impact of mixing on a fed-batch culture of Saccharomyces cerevisiae.
Delvigne, Frank ULg; Lejeune, Annick ULg; Destain, Jacqueline ULg et al

in Biotechnology Progress (2006), 22(1), 259-69

The mechanisms of interaction between microorganisms and their environment in a stirred bioreactor can be modeled by a stochastic approach. The procedure comprises two submodels: a classical stochastic ... [more ▼]

The mechanisms of interaction between microorganisms and their environment in a stirred bioreactor can be modeled by a stochastic approach. The procedure comprises two submodels: a classical stochastic model for the microbial cell circulation and a Markov chain model for the concentration gradient calculus. The advantage lies in the fact that the core of each submodel, i.e., the transition matrix (which contains the probabilities to shift from a perfectly mixed compartment to another in the bioreactor representation), is identical for the two cases. That means that both the particle circulation and fluid mixing process can be analyzed by use of the same modeling basis. This assumption has been validated by performing inert tracer (NaCl) and stained yeast cells dispersion experiments that have shown good agreement with simulation results. The stochastic model has been used to define a characteristic concentration profile experienced by the microorganisms during a fermentation test performed in a scale-down reactor. The concentration profiles obtained in this way can explain the scale-down effect in the case of a Saccharomyces cerevisiae fed-batch process. The simulation results are analyzed in order to give some explanations about the effect of the substrate fluctuation dynamics on S. cerevisiae. [less ▲]

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See detailInvolvement of fengycin-type lipopeptides in the multifaceted biocontrol potential of Bacillus subtilis
Ongena, MARC ULg; Jacques, Philippe ULg; Toure, Y. et al

in Applied Microbiology & Biotechnology (2005), 69(1), 29-38

In this work, the potential of Bacillus subtilis strain M4 at protecting plants against fungal diseases was demonstrated in different pathosystems. We provide evidence for the role of secreted ... [more ▼]

In this work, the potential of Bacillus subtilis strain M4 at protecting plants against fungal diseases was demonstrated in different pathosystems. We provide evidence for the role of secreted lipopeptides, and more particularly of fengycins, in the protective effect afforded by the strain against damping-off of bean seedlings caused by Pythium ultimum and against gray mold of apple in post-harvest disease. This role was demonstrated by the strong biocontrol activity of lipopeptide-enriched extracts and through the detection of inhibitory quantities of fengycins in infected tissues. Beside such a direct antagonism of the pathogen, we show that root pre-inoculation with M4 enabled the host plant to react more efficiently to subsequent pathogen infection on leaves. Fengycins could also be involved in this systemic resistance-eliciting effect of strain M4, as these molecules may induce the synthesis of plant phenolics involved in or derived from the defense-related phenylpropanoid metabolism. Much remains to be discovered about the mechanisms by which Bacillus spp suppress disease. Through this study on strain M4, we reinforce the interest in B. subtilis as a pathogen antagonist and plant defense-inducing agent. The secretion of cyclic fengycin-type lipopeptides may be tightly related to the expression of these two biocontrol traits. [less ▲]

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See detailSynthese enzymatique d’esters de sucre au départ d’huiles végétales
Detry, J.; Destain, Jacqueline ULg; Lognay, Georges ULg et al

Poster (2005, October 14)

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See detailSugar esters lipase mediated synthesis from vegetable oils
Destain, Jacqueline ULg; Detry, Jean; Lognay, Georges ULg et al

Scientific conference (2005, September 19)

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See detailSugar esters lipase mediated synthesis from vegetable oils
Destain, Jacqueline ULg; Detry, J.; Lognay, Georges ULg et al

Poster (2005, September)

Detailed reference viewed: 25 (5 ULg)