References of "Weber, Dominique"
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See detailTunisian Table Olive Phenolic Compounds And Their Antioxidant Capacity
Ben Othman, N.; Weber, Dominique ULg; Thonart, Philippe ULg et al

in Journal of Food Science (2008), 73(4),

For the 1st time, 4 olive cultivars, theMeski, Chemlali, Besbessi, and Tounsi, fromthe Tunisian market were investigated to evaluate the phenolic compounds’ contribution in nutritional value of table ... [more ▼]

For the 1st time, 4 olive cultivars, theMeski, Chemlali, Besbessi, and Tounsi, fromthe Tunisian market were investigated to evaluate the phenolic compounds’ contribution in nutritional value of table olives. From the Meski cultivar, we have chosen 4 different samples to evaluate differences within the same cultivar. Basic characteristics and total phenolic content were evaluated in flesh and kernel. The highest value of flesh phenolic content was observed in sample M4 of the Meski cultivar; however, the lowest value was observed in the Besbessi cultivar and they were 1801 and 339 mg GA/100 g dry weight, respectively. Themain simple phenolic compounds identified in flesh extracts are hydroxytyrosol, tyrosol, and vanillic acid. Oleuropein was not detected in any samples. The antioxidant activity of Tunisian olive flesh varies between 212 and 462 μM TEAC/g of dry weight. Antioxidant activity of olives was related to their phenolic content but we found a low correlation between phenolic content and TEAC [less ▲]

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See detailPolyphasic Identification Of A New Thermotolerant Species Of Lactic Acid Bacteria Isolated From Chicken Faeces
Sow, Nm.; Dubois Dauphin, Robin ULg; Weber, Dominique ULg et al

in African Journal of Biotechnology (2005), 4(5),

Two thermotolerant and desiccation tolerant lactic acid bacteria (TDLAB) were pointed out from twenty isolated strains from soils and dried chicken faeces. Samples were collected in poultry farms in the ... [more ▼]

Two thermotolerant and desiccation tolerant lactic acid bacteria (TDLAB) were pointed out from twenty isolated strains from soils and dried chicken faeces. Samples were collected in poultry farms in the vicinity of Dakar, Senegal (West Africa). The two new isolates were called Sp.4 (Sp.4=CWBI-B534=LMG7278) and Sp.20 (Sp.20=CWBI-B545=LMG7279). They are Grampositive, catalase-negative, facultatively anaerobic, non-motile, and non-spore-forming rods. Both produce D/L lactic acid via homofermentative pathway. Growth of the strains occurred between 15°C and 44°C. The optimum temperature for growth was in 30°C-37°C temperature and pH 3-8 range. Desiccation treatment in glycerol showed 30% survival rates. Complex total fatty acid pattern of the strains showed the presence of C14:0, C16:0, C16:1, C18:0, C18:1, C18:2, C18:3. SDS-PAGE of total protein of both strains placed them in L. plantarum group. AFLP analysis showed a phylogenetic proximity of the two strains with L. plantarum stricto sensu species. Specific amplified 16s rDNA restriction analysis (ARDRA) of the 16S rDNA gene, however, showed that these thermotolerant strains were not L. plantarum. ITS sequencing revealed that Sp.20 (LMG 7279) could be classed into Lactobacillus paraplantarum species since the short sequence of ITS showed 95% of similarity with reference species. Polyphasic identification shows that Sp.4, (the type strain is LMG 7278T) represent a new species within the genus Lactobacillus with only 88%+/-1 ITS sequence similarity with reference species. For which the name Lactobacillus aminata sp. nov. is proposed. [less ▲]

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See detailLyophilized Preparations Of Bacteriocinogenic Lactobacillus Curvatus And Lactococcus Lactis Subsp Lactis As Potential Protective Adjuncts To Control Listeria Monocytogenes In Dry-Fermented Sausages
Benkerroum, N.; Daoudi, A.; Hamraoui, T. et al

in Journal of Applied Microbiology (2005), 98(1),

Methyl oleate was used as a primary carbon source and as an alternative inducer for the production of an extracellular lipase, Lip2, in Y. lipol.vtica strain LgX64.81 grown in a 20-1 bioreactor. The ... [more ▼]

Methyl oleate was used as a primary carbon source and as an alternative inducer for the production of an extracellular lipase, Lip2, in Y. lipol.vtica strain LgX64.81 grown in a 20-1 bioreactor. The lipase-encoding gene, LIP2, was investigated during culture on methyl oleate using a pLIP2-LacZ reporter fusion and we provide evidence for the involvement of methyl oleate in its regulation. [less ▲]

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See detailBiocontrol Of Listeria Monocytogenes In A Model Cultured Milk (Lben) By In Situ Bacteriocin Production From Lactococcus Lactis Ssp Lactis
Benkerroum, N.; Ghouati, Y.; Ghalfi, H. et al

in International Journal of Dairy Technology (2002), 55(3),

Bacteriocin-producing (Bac+) Lactococcus lactis ssp. lactis CCMM/IAV/BK1 isolated from traditional lben was used in the preparation of lben from pasteurized milk to assess its potential inhibitory ... [more ▼]

Bacteriocin-producing (Bac+) Lactococcus lactis ssp. lactis CCMM/IAV/BK1 isolated from traditional lben was used in the preparation of lben from pasteurized milk to assess its potential inhibitory activity against Listeria monocytogenes ATCC 7644. Production of bacteriocin (arbitrary units, AU) in MRS broth fortified with yeast extract (MRSY) in a fermentor under controlled and uncontrolled pH conditions was also investigated. This Bac+ strain yielded about 35 times more bacteriocin when the pH was maintained constant at 6.5 than under varying pH conditions. To test the effect of in situ bacteriocin production against L. monocytogenes, lben was made from cow's milk artificially contaminated with approximately 107 cfu/mL and fermented with a mixed mesophilic starter culture consisting of the lactococcal Bac+ organism and Lc. lactis ssp. lactis biovar diacetylactis 66, a diacetyl-producing strain, in a ratio of 1 : 1. Numbers of L. monocytogenes were monitored during fermentation and storage of lben at refrigeration temperature (c. 7°C) for up to 6 days. Performances of the Bac+ starter were compared to those of an isogenic Bac- derivative strain obtained from the Bac+ starter by curing with ethidium bromide. The results showed that the amount of L. monocytogenes decreased to below the detectable level in a 1-mL sample within 24 h of storage at 7°C in lben fermented with the Bac+ starter culture. On the contrary, L. monocytogenes survived for 6 days of storage at 7°C in lben made with the Bac- starter. The Bac+ wild strain of the starter studied could be adequately used to produce lben or similar indigenous fermented milks of improved hygienic quality on an industrial scale. Alternatively, it could be used as an adjunct in minimally processed products or in products obtained from raw milk to add a safety factor. [less ▲]

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See detailSpray-drying of different lactic acid species.
Desmons, S.; Zgoulli, S.; Evrard, P. et al

in Mededelingen van de Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen (Rijksuniversiteit te Gent) (1998), 63(4a),

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See detailEtudes microbiologique et biochimique du Mbanik, lait fermente traditionnel senegalais.
Gningue, P. N.; Weber, Dominique ULg; Thonart, Philippe ULg

in Cerevisia and Biotechnology (1991), 16(3), 32-40

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See detailA Multipotential Hydrolytic Reactor Using The Yeast-Strain Kluyveromyces-Marxianus
Rikir, R.; Weber, Dominique ULg; Campos, D. et al

in Applied Biochemistry and Biotechnology (1990), 24-25

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See detailTechnologie de mise au point de starters pour l'agriculture.
Jacques, Philippe ULg; Klinkenberg, H.; Lepoivre, Philippe ULg et al

in Annales de Gembloux (1989), 95(3),

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See detailLes enzymes: produits de la biotechnologie pour l'agro-alimentaire.
Thonart, Philippe ULg; Hubert, J. B.; Rikir, R. et al

in Annales de Gembloux (1989), 95

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See detailImprovement of Mucor lipase production by mutant selection.
Weber, Dominique ULg; Destain, Jacqueline ULg; Thonart, Philippe ULg

in Belgian Journal of Food Chemistry and Biotechnology (1989), 44(3), 79-82

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See detailImprovement Of Inulin Hydrolysis Yeast-Cell Reactor By Mutants Selection
Thonart, Philippe ULg; Weber, Dominique ULg; Rikir, R.

in Applied Biochemistry and Biotechnology (1988), 17

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