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See detailHydrolyse enzymatique de pâtes de papeterie - Influence des traitements mécaniques de préparation
Thonart, Philippe ULg; Paquot, Michel ULg; Mottet, Alphonse

in Holzforschung : International Journal of the Biology, Chemistry, Physics, & Technology of Wood (1979), (33), 197-202

Detailed reference viewed: 11 (2 ULg)
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See detailHydrolyse enzymatique de pates de papeterie [de feuilleus et de resineux].
Thonart, Philippe ULg; Paquot, Michel ULg; Mottet, A.

in Holzforschung (1980), 33(6),

Detailed reference viewed: 8 (1 ULg)
Peer Reviewed
See detailHydrolyse enzymatique de résidus d'extraction alcaline d'écorces de pinus pinaster.
Parajo, J.-C.; Paquot, Michel ULg; Foucart, M. et al

in Belg. Journ. of Food Chem. and Biotech (1988), 43(2), 51-58

Detailed reference viewed: 2 (0 ULg)
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See detailHydrolysis of starch by sorghum malt for maltodextrin production
Ba, K.; Destain, Jacqueline ULg; Thonart, Philippe ULg

Scientific conference (2010)

Maltodextrin is a mixture of saccharides with a molecular weight between polysaccharides and oligosaccharides with DE lower than 20. Maltodextrin is more soluble in water than native starches, also is ... [more ▼]

Maltodextrin is a mixture of saccharides with a molecular weight between polysaccharides and oligosaccharides with DE lower than 20. Maltodextrin is more soluble in water than native starches, also is cheaper in comparison with other major edible hydrocolloids. Maltodextrin is obtained by moderate enzymatic or acidic hydrolysis of starch. The hydrolysis of starch, catalyzed by amylases, is the most important commercial enzyme process. The hydrolyzed products are widely applied in food, paper and textile industries. Because of the increasing demand for these enzymes in various industries, there is enormous interest in developing enzymes with better properties, such as raw starch-degrading amylases suitable for industrial applications and their cost-effective production techniques. Sorghum (Sorghum bicolor) is a widely grown crop in Africa. Obtaining enzymes from sorghum requires a transformation. The objective of this study was application of sorghum amylase for maltodextrin. Sorghum seeds were supplied by the ISRA (Bambey, Senegal). Seeds were germinated in the laboratory at 30°C for 72 h and the sorghum malt was dried at 40°C for 48 h. Corn starch (from Roquette, France) hydrolysis was assayed in a bioreactor of 2 l at a temperature of 65°C gently stirred. Raw starch was slurried in water (30% w/v) and sorghum malt was introduced, chloride calcium was added, pH was adjusted to 6. Maltodextrin was characterized in term of the dextrose equivalent (DE) during the hydrolysis. The yield of hydrolysis was evaluated by soluble solids (° BRIX) at different hydrolysis time. The glucose concentration released was measured by DNS method (Miller method). [less ▲]

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See detailHydrolysis of starch by sorghum malt for maltodextrin production
Ba, Khady ULg; Destain, Jacqueline ULg; Thonart, Philippe ULg

Poster (2009, December 16)

Maltodextrin is a mixture of saccharides with a molecular weight between polysaccharides and oligosaccharides with DE lower than 20. Maltodextrin is more soluble in water than native starches, also is ... [more ▼]

Maltodextrin is a mixture of saccharides with a molecular weight between polysaccharides and oligosaccharides with DE lower than 20. Maltodextrin is more soluble in water than native starches, also is cheaper in comparison with other major edible hydrocolloids. Maltodextrin is obtained by moderate enzymatic or acidic hydrolysis of starch. The hydrolysis of starch, catalyzed by amylases, is the most important commercial enzyme process. The hydrolyzed products are widely applied in food, paper and textile industries. Because of the increasing demand for these enzymes in various industries, there is enormous interest in developing enzymes with better properties, such as raw starch-degrading amylases suitable for industrial applications and their cost-effective production techniques. Sorghum (Sorghum bicolor) is a widely grown crop in Africa. Obtaining enzymes from sorghum requires a transformation. The objective of this study was application of sorghum amylase for maltodextrin. Sorghum seeds were supplied by the ISRA (Bambey, Senegal). Seeds were germinated in the laboratory at 30°C for 72 h and the sorghum malt was dried at 40°C for 48 h. Corn starch (from Roquette, France) hydrolysis was assayed in a bioreactor of 2 l at a temperature of 65°C gently stirred. Raw starch was slurried in water (30% w/v) and sorghum malt was introduced, chloride calcium was added, pH was adjusted to 6. Maltodextrin was characterized in term of the dextrose equivalent (DE) during the hydrolysis. The yield of hydrolysis was evaluated by soluble solids (° BRIX) at different hydrolysis time. The glucose concentration released was measured by DNS method (Miller method). [less ▲]

Detailed reference viewed: 119 (4 ULg)
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See detailHydrolysis of starches and flours by sorghum malt amylases for dextrins production
Ba, Khady ULg; Aguedo, Mario ULg; Tine, Emmanuel et al

in European Food Research & Technology (2013)

Corn and wheat starches as well as wheat and cassava flours were hydrolyzed using sorghum malt at 65 °C for 6 hours. During these reactions, dextrose equivalent (DE) values were followed under 3 ... [more ▼]

Corn and wheat starches as well as wheat and cassava flours were hydrolyzed using sorghum malt at 65 °C for 6 hours. During these reactions, dextrose equivalent (DE) values were followed under 3 concentrations of sorghum malt and of calcium chloride. Wheat flour presented the highest DE values and cassava flour had the highest hydrolysis yield. Thus, different dextrins were produced in a pilot plant and were analyzed by HPSEC and HPAEC-PAD for their molecular weight distribution and oligosaccharides composition respectively. The results indicated that oligosaccharides with broad molecular weight distributions were present in the dextrins produced and that the proportion of maltose was very high. [less ▲]

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See detailHydrolysis Of The Dimethyl Ester Of N-Succinylphenylalanine, A Model Of Polyesteramides, In The Presence Of Papain - Kinetic Study And Computer Simulation
David, C.; Lefèbvre, F.; Brasseur, Robert ULg et al

in Enzymes In Polymer Synthesis (1998), 684

Our work is concerned with the kinetics of enzymatic hydrolysis of substrates containing ester and amide groups and with the interactions between the active site of the enzyme and the function to be ... [more ▼]

Our work is concerned with the kinetics of enzymatic hydrolysis of substrates containing ester and amide groups and with the interactions between the active site of the enzyme and the function to be hydrolyzed, special attention is paid to differences between a soluble substrate which can fit the active site and a crystalline or semi-crystalline substrate. [less ▲]

Detailed reference viewed: 14 (0 ULg)
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See detailHydrolytic and thermal degradation of random copolyesters of epsilon-caprolactone and 2-oxepane-1,5-dione
Dwan'Isa Latere, Jean-Pierre; Lecomte, Philippe ULg; Dubois, Philippe ULg et al

in Macromolecular Chemistry and Physics (2003), 204(9), 1191-1201

The hydrolytic and thermal stability of random copolyesters of epsilon-caprolactone (epsilon-CL) and ca. 30 mol-% 2-oxepane-1,5-dione (OPD) have been investigated. Compared with poly(epsilon-caprolactone ... [more ▼]

The hydrolytic and thermal stability of random copolyesters of epsilon-caprolactone (epsilon-CL) and ca. 30 mol-% 2-oxepane-1,5-dione (OPD) have been investigated. Compared with poly(epsilon-caprolactone) (PCL) of a comparable molecular weight, the hydrolytic degradation of the copolyester is faster in a phosphate buffer (pH = 7.4) at 37°C as confirmed by the time dependence of water absorption, weight loss, melting temperature, and molecular weight. This difference is a result of the higher hydrophilicity imparted to the copolyester by the ketone of the OPD units. The thermal degradation has been studied by thermogravimetric analysis (TGA), (HNMR)-H-1 spectroscopy, and size exclusion chromatography (SEC). The activation energy of the thermal degradation under nitrogen has been found to be lower for the copolyesters than for PCL, which indicates that the OPD co-units have a deleterious effect on the thermal stability of PCL. The thermal degradation primarily occurs by pyrolysis of the ester functions. [less ▲]

Detailed reference viewed: 25 (5 ULg)
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See detailHydromechanical analysis of fracturing in clayey rocks : modelling of disturbed argillite and ventilation test
Pardoen, Benoît ULg; Collin, Frédéric ULg

Scientific conference (2012, February 15)

The present advances in hydro-mechanical analysis of a clayey rock fracturing are presented at a department seminar. The damaged zone existing around galleries composing underground structures is studied ... [more ▼]

The present advances in hydro-mechanical analysis of a clayey rock fracturing are presented at a department seminar. The damaged zone existing around galleries composing underground structures is studied through two aspects: rock-atmosphere interaction at gallery wall and rock fracturing modelling. These two aspects are discussed through the numerical results of an in situ ventilation test modelling and a biaxial compression test modelling. [less ▲]

Detailed reference viewed: 50 (23 ULg)
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See detailHydromechanical behaviour of bentonite under in situ conditions
Dieudonné, Anne-Catherine ULg; Talandier, Jean; Collin, Frédéric ULg et al

Conference (2015)

Detailed reference viewed: 13 (3 ULg)
Peer Reviewed
See detailHydromechanical coupling and strain localisation
Charlier, Robert ULg; Radu, Jean-Pol ULg

in Proc. of the NAFEMS World Congress (1997, April)

Detailed reference viewed: 6 (2 ULg)
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See detailHydromechanical coupling theory in unsaturated geomaterials and its numerical integration
Charlier, Robert ULg; Radu, Jean-Pol ULg; Gerard, Pierre ULg et al

in Laloui, Lyesse (Ed.) Mechanics of Unsaturated Geomaterials (2013)

Detailed reference viewed: 70 (26 ULg)
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See detailHydrometallurgy of precious metals - effects on the environment
Gaydardzhiev, Stoyan ULg

in Gallios and Matis (Ed.) Proceedings of a NATO-ASI, NATO-ASI Series 2, v. 43 (1998)

Factors which affect the release of toxic substabces to the environment during the hydrometallurgical processing of precious metals bearing ores are discussed. The environmental notions of the cyanidation ... [more ▼]

Factors which affect the release of toxic substabces to the environment during the hydrometallurgical processing of precious metals bearing ores are discussed. The environmental notions of the cyanidation process are presented together with a review about the work in the field of alternative gold lixiviants. [less ▲]

Detailed reference viewed: 106 (9 ULg)
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See detailHydromorphological restoration of Alpine rivers
Rulot, François ULg; Dewals, Benjamin ULg; Erpicum, Sébastien ULg et al

Conference (2011, November)

More and more efforts are undertaken to restore rivers in a state close to their natural conditions in order to meet the Water Framework Directive requirement. This directive commits EU member states to ... [more ▼]

More and more efforts are undertaken to restore rivers in a state close to their natural conditions in order to meet the Water Framework Directive requirement. This directive commits EU member states to achieve a good ecological status of all their water bodies. It became thus very important to develop river restoration such as fish passages, bank renaturation, natural bars or meanders. Another important component of river restoration schemes is the decommissioning of man-made structures. These interventions can have significant impact on the river hydrology, hydraulics and morphology, such as bed degradation or aggradation, bank failures. Predicting these impacts of restoration schemes on the river, especially for large scale projects, should rely on detailed numerical studies. To achieve this goal, we develop a methodology to analyse different scenarios of river restoration based on several criteria related to flow, sediment transport and environment. This method is applied to the case of a French alpine river in which five hydropower plants will be replaced by a unique underground hydropower plant on the same section of river. [less ▲]

Detailed reference viewed: 10 (1 ULg)
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See detailHydronéphrose produite par un anévrysme géant de l'artère rénale. Traitement par autotransplantation
Creemers, Etienne ULg; VAN DAMME, Hendrik ULg; Dusart, Y. et al

in Journal d'Urologie (1990), 96(1), 40-4

The authors report a case of hydronephrosis secondary to a giant aneurysm of the left renal artery, displacing the pyeloureteral junction. Decompression was obtained via "ex situ" reconstructive arterial ... [more ▼]

The authors report a case of hydronephrosis secondary to a giant aneurysm of the left renal artery, displacing the pyeloureteral junction. Decompression was obtained via "ex situ" reconstructive arterial surgery, followed by renal autotransplantation without division of the ureter. [less ▲]

Detailed reference viewed: 14 (0 ULg)
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See detailHydronyme et géosymbole : Salm-en-Ardenne. Quand un nom de rivière fait couler beaucoup d'encre
Schmitz, Serge ULg

in Guillaud, Dominique; Seysset, Marie; Walter, Annie (Eds.) Le voyage inachevé... à Joël Bonnemaison (1998)

Cultural space is full significance and attachments. To illustrate the importance of place or river names for people, this paper analyses a petty local quarrel about the name of a river, the Salm or Glain ... [more ▼]

Cultural space is full significance and attachments. To illustrate the importance of place or river names for people, this paper analyses a petty local quarrel about the name of a river, the Salm or Glain, in the Belgian Ardenne and asks the question: wich has more meaning for the people, the place name at the place itself ? [less ▲]

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See detailThe hydrophobic effect in protein folding.
Lins, Laurence ULg; Brasseur, Robert ULg

in FASEB Journal (1995), 9(7), 535-40

In this review of protein folding we consider the noncovalent interactions existing between atoms or molecules at the molecular level. The electrostatic, Van der Waals, hydrogen bonding, and hydrophobic ... [more ▼]

In this review of protein folding we consider the noncovalent interactions existing between atoms or molecules at the molecular level. The electrostatic, Van der Waals, hydrogen bonding, and hydrophobic interactions are described and their contribution to protein conformation is discussed. The growing interest in the hydrophobic effect arises from its importance in the protein folding process, and a semiempirical simulation of the free energy of solvation is proposed. In most proteins, the different forces we describe contribute to the stability of the protein conformation in a complex way. However, in the case of the apolipoproteins and cytochrome C551, the energetic contributions are easily distinguished. For this reason, these proteins are used to illustrate the importance of the different energy fields. [less ▲]

Detailed reference viewed: 15 (2 ULg)
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See detailHydrophobic reverse derivitization for secondary ion mass spectrometry/fast atom bombardment
De Pauw, Edwin ULg; Pelzer, Gaston; Marien, José ULg

in Organic Mass Spectrometry (1985), 20(11), 692-693

New method to increase the signal in soft ionization methods

Detailed reference viewed: 43 (11 ULg)