References of "Destain, Jacqueline"
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See detailCellulose enzymatic availability in Municipal solid waste
Rodriguez, C.; Hiligsmann, Serge ULg; Ongena, MARC ULg et al

in Christensen; Cossu; Stegmann (Eds.) Proceedings Sardinia 03, Ninth International Waste Management and Landfill Symposium (2003)

We recently developed a new and rapid method to evaluate the biological reactivity of cellulose in Municipal Solid Waste (MSW). This test is based on the enzymatic hydrolysis of cellulose in MSW and can ... [more ▼]

We recently developed a new and rapid method to evaluate the biological reactivity of cellulose in Municipal Solid Waste (MSW). This test is based on the enzymatic hydrolysis of cellulose in MSW and can be related to the digestibility of this polymer in MSW. In this work, we showed that the enzymatic cellulose degradation test (ECD) correlated well with a Biochemical Methane Potential (BMP) assay so that the ECD test can be reliably applied to estimate cellulose bioavailability in various waste samples. These tests have also been used to evaluate the influence of some important parameters that could affect the extent and the rate of cellulose degradation in waste. It appeared that cellulose enzymatic hydrolysis is related to the moisture content but no clear relationship could be established with the cellulose content. Moreover, it is shown that acetic acid produced by the anaerobic degradation of organic matter, and responsible for high COD in young leachates, may slow down or inhibit the enzymatic hydrolysis step and the methanogenesis. [less ▲]

Detailed reference viewed: 115 (7 ULg)
See detailLa problématique de la gestion des déchets ménagers
Thonart, Philippe ULg; Lardinois, M.; Rodriguez, Ch. et al

Conference (2002, November)

Detailed reference viewed: 38 (2 ULg)
See detailCellulose bioavailability in waste
Rodriguez, Ch.; Hiligsmann, Serge ULg; Lardinois, M. et al

Poster (2002, October)

Detailed reference viewed: 12 (1 ULg)
See detailLa problématique de la gestion des déchets ménagers en République d'Haïti
Thonart, Philippe ULg; Lardinois, M.; Rodriguez, Ch. et al

Conference (2002, July 01)

Detailed reference viewed: 32 (4 ULg)
See detailLipase production in Yarrowia lipolytica overproducing mutants.
Fickers, Patrick ULg; Nicaud, J. M.; Destain, Jacqueline ULg et al

Poster (2002, July)

Detailed reference viewed: 20 (4 ULg)
See detailTraitement biologique des eaux usées : le cas des bacs à graisses.
Destain, Jacqueline ULg; Antoine, P.; Evrard, P. et al

Poster (2002, June)

Detailed reference viewed: 12 (0 ULg)
See detailScreening of pectolytic microorganisms by near infrared reflectance spectroscopy.
Sinnaeve, G.; Ciza, A.; Deconinck, T. et al

Poster (2001, June)

Detailed reference viewed: 4 (0 ULg)
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See detailCellulose enzymatic availability in waste refuse
Rodriguez, C.; Hiligsmann, Serge ULg; Lardinois, M. et al

in Christensen; Cossu; Stegmann (Eds.) Proceedings Sardinia 01, Eight International Waste Management and Landfill Symposium (2001)

This work presents an original method for testing the biological reactivity of cellulose. This test specifically targets one of the limiting steps of cellulose bioconversion into biogas, i.e. the ... [more ▼]

This work presents an original method for testing the biological reactivity of cellulose. This test specifically targets one of the limiting steps of cellulose bioconversion into biogas, i.e. the cellulose hydrolysis. From this point of view, enzymes-mediated hydrolysis has been performed to evaluate cellulose bioavailability in refuse samples from different layers of an old landfill. The relationship between the cellulose enzymatic accessibility and the lignin contents has also been studied. Similarly, the correlation between cellulose, lignin and humic acid contents has been investigated. On the other hand, moisture content in landfills is considered as one of the most important factors that favours methanogenesis. In this respect, the influence of moisture content on cellulose enzymatic hydrolysis has also been evaluated. [less ▲]

Detailed reference viewed: 68 (2 ULg)
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See detailA pluridisciplinary model to predict municipal landfill life
Hiligsmann, Serge ULg; Rodriguez, C.; Lardinois, M. et al

Conference (2001)

Most degradation processes that occur within municipal wastes landfills result from different microbial activities interacting all along the landfill lifetime and that are influenced by several non ... [more ▼]

Most degradation processes that occur within municipal wastes landfills result from different microbial activities interacting all along the landfill lifetime and that are influenced by several non-biological factors. These complex biological and chemical processes require a multidisciplinary pattern in order to assess and control their environmental impact. Thanks to Walloon Region support, we have developed a pattern or model combining the evolution of different key parameters. Such parameters qualify biogas (composition, production rate), leachate (pH, BOD5, COD, volatile fatty acids, redox potential, nitrogen balance, humic acids...), or solid waste (moisture, settlement, cellulose content...). This paper presents relationships, including our model, between these parameters. Variations of pH, BOD5/COD ratio, sulfate concentration in leachates, gas composition analysis and settlement measures allow to predict landfill age, on a standard scale, since completion. Evaluation of cellulose and water content in refuse as well as settlement degree are useful to estimate the time required for complete biological degradation. [less ▲]

Detailed reference viewed: 45 (6 ULg)
See detailChemical characterization of Yarrowia lipolytica extracellular lipase.
Destain, Jacqueline ULg; Moreau, B.; Fickers, Patrick ULg et al

Poster (2000, September)

Detailed reference viewed: 9 (4 ULg)
See detailPurification and characterization of Yarrowia lipolytica exracellular lipase.
Destain, Jacqueline ULg; Swiatkowski, T.; van Beumen, J. et al

Poster (1999, September)

Detailed reference viewed: 10 (1 ULg)
See detailLa problématique de la gestion des déchets ménagers en République d'Haïti
Thonart, Philippe ULg; Lardinois, M.; Kapepula, D. et al

Conference (1999, September)

Detailed reference viewed: 25 (4 ULg)
See detailComparative study of bile salts hydrolase activity from Lactobacilli ssp.
El Mejdoub, Thami ULg; Roblain, D.; Destain, Jacqueline ULg et al

Poster (1999, July)

Detailed reference viewed: 27 (2 ULg)
See detailScreening of new microorganisms for pectinases production
Ciza, A.; Sinnaeve, G.; Deconinck, T. et al

Poster (1999, July)

Detailed reference viewed: 9 (3 ULg)
See detailThe monitoring of the enzymatic depolymerisation of pectins by spectroscopic techniques.
Sinnaeve, G.; Ciza, A.; Deconinck, T. et al

Poster (1999, July)

Detailed reference viewed: 5 (0 ULg)
See detailScreening of pectolytic microorganisms by near infrared reflectance spectroscopy.
Sinnaeve, G.; Ciza, A.; Deconinck, T. et al

Poster (1999, June)

Detailed reference viewed: 13 (0 ULg)
Peer Reviewed
See detailOptimization of biosurfactant lipopeptide production from Bacillus subtilis S499 by Plackett-Burman design
Jacques, Philippe ULg; Hbid, C.; Destain, Jacqueline ULg et al

in Applied Biochemistry and Biotechnology (1999), 77-9

Bacillus subtilis S499 is well-known for its ability to produce two families of surfactant lipopeptides: Iturin A and Surfactin S1. Fermentation optimization for this strain was performed to amplify the ... [more ▼]

Bacillus subtilis S499 is well-known for its ability to produce two families of surfactant lipopeptides: Iturin A and Surfactin S1. Fermentation optimization for this strain was performed to amplify the surfactant production. Ten active variables were analyzed by two successive Plackett-Burman designs, consisting respectively of 12 and 16 experiments to give an optimized medium. The amount of biosurfactant lipopeptides in the supernatant of a culture carried out in this optimized medium was about five times higher than that obtained in nonoptimized rich medium. The analysis of the surfactant molecules produced in such optimized conditions has revealed the presence of a third family of lipopeptides: the fengycins. The time-dependent production of these three families of molecules in bioreactors showed that surfactin S1 is produced during the exponential phase and iturin A and fengycins during the stationary phase. [less ▲]

Detailed reference viewed: 186 (15 ULg)