References of "Kamdem, Irenée"
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See detailComparative biochemical analysis after steam pretreatments of lignocellulosic biomass from six combined morphological parts of Williams Cavendish banana plant (Triploid Musa AAA group)
Kamdem, Irenée ULg; Jacquet, Nicolas ULg; Tiappi Deumaga, Mathias Florian ULg et al

in Waste Management & Research : The Journal of the International Solid Wastes & Public Cleansing Association (2015)

The accessibility of fermentable substrates to enzymes is a limiting factor for the efficient bioconversion of agricultural wastes in the context of sustainable development. This paper presents the ... [more ▼]

The accessibility of fermentable substrates to enzymes is a limiting factor for the efficient bioconversion of agricultural wastes in the context of sustainable development. This paper presents the results of a biochemical analysis performed on Williams Cavendish Lignocellulosic Biomass (WCLB) after steam cracking (SC) and steam explosion (SE) pretreatments. Solid (S) and liquid (L) fractions (Fs) obtained from SC pretreatment performed at 180°C (SLFSC180) and 210°C (SLFSC210) generated, after diluted acid hydrolysis, the highest proportions of neutral sugar (NS) contents, specifically 52.82±3.51 and 49.78±1.39 %w/w WCLB’s dry matter (DM), respectively. The highest proportions of glucose were found in SFSC210 (53.56±1.33 %w/w DM) and SFSC180 (44.47±0.00 %w/w DM), while the lowest was found in unpretreated WCLB (22.70±0.71 %w/w DM). Total NS content assessed in each LF immediately after SC and SE pretreatments was less than 2 %w/w of the LF’s DM, thus revealing minor acid autohydrolysis consequently leading to minor NS production during the steam pretreatment. WCLB subjected to SC at 210°C (SC210) generated up to 2.7-fold bioaccessible glucan and xylan. SC and SE pretreatments showed potential for the deconstruction of WCLB (delignification, depolymerisation, decrystallization and deacetylation), enhancing its enzymatic hydrolysis. The concentrations of enzymatic inhibitors such as 2-furfuraldehyde and 5-(hydroxymethyl)furfural from LFSC210 were the highest (41 and 21 µg mL-1, respectively). This study shows that steam pretreatments in general and SC210 in particular are required for efficient bioconversion of WCLB. Yet, biotransformation through biochemical processes (e.g., anaerobic digestion) must be performed to assess the efficiency of these pretreatments. [less ▲]

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See detailL'entrepreneuriat dans le secteur des biotechnologies: les clés du succès dans un contexte de mondialisation
Kamdem, Irenée ULg

Conference (2015, June 03)

Cette communication est réalisée dans le cadre du doctorat. Son principal objectif a été de présenter aux créateurs d'entreprises du secteur des biotechnologies, les outils stratégiques de gestion et ... [more ▼]

Cette communication est réalisée dans le cadre du doctorat. Son principal objectif a été de présenter aux créateurs d'entreprises du secteur des biotechnologies, les outils stratégiques de gestion et management dans un environnement qui se mondialise davantage. Ces créateurs sont généralement dotés de grandes qualités scientifiques et techniques mais possèdent moins de qualités managériales. La maîtrise des notions entrepreneuriales leur permettra de mieux gérer et contrôler leurs entreprises. [less ▲]

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See detailResponse letter-Comparative biochemical analysis after steam pretreatments of lignocellulosic biomass from six combined morphological parts of Williams Cavendish banana plant (Triploid Musa AAA group)
Kamdem, Irenée ULg

in Waste Management & Research : The Journal of the International Solid Wastes & Public Cleansing Association (2015)

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See detailLetter to editor-Comparative biochemical analysis after steam pretreatments of lignocellulosic biomass from six combined morphological parts of Williams Cavendish banana plant (Triploid Musa AAA group)
Kamdem, Irenée ULg

in Waste Management & Research : The Journal of the International Solid Wastes & Public Cleansing Association (2015)

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See detailWastes of banana ‘s lignocellulosic biomass: a sustainable and renewable source of biogas production
Kamdem, Irenée ULg; Hiligsmann, Serge ULg; Vanderghem, Caroline ULg et al

Poster (2013, November 15)

We highlight in this poster, the results of biogas production and biochemical analysis based on the anaerobic digestion of each type of the lignocellulosic waste from a banana cultivar (Williams Cavendish ... [more ▼]

We highlight in this poster, the results of biogas production and biochemical analysis based on the anaerobic digestion of each type of the lignocellulosic waste from a banana cultivar (Williams Cavendish: triploid Musa AAA group). These wastes are usually abandoned in the plantation after the fruits have been harvested. There is great interest in obtaining energy from this generally neglected biomaterial, particularly in the contexts of global warming and sustainable development. [less ▲]

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See detailActivité Pédagogique en sciences de l'éducation: Digestions enzymatiques de trois macromolécules biologiques (cellulose, hémicellulose et amidon)
Kamdem, Irenée ULg

Report (2013)

Notre activité qui durera 4 heures, fait partie du cours de biochimie des macromolécules et métabolisme (210-106-AH) qui se donne au Cégep Ahuntsic (Québec, Canada). Décomposé en 4 heures de théorie, 3 ... [more ▼]

Notre activité qui durera 4 heures, fait partie du cours de biochimie des macromolécules et métabolisme (210-106-AH) qui se donne au Cégep Ahuntsic (Québec, Canada). Décomposé en 4 heures de théorie, 3 heures de pratique et 3 heures de travail personnel, ledit cours se donne en quatrième session et appartient au programme technique (Techniques de laboratoire-Biotechnologies (DEC-BAC) 210.AA) dont le but est la maîtrise des techniques modernes d'analyse et de production utilisées en biotechnologies. Le domaine cognitif constitué des connaissances déclaratives et procédurales qui répondent respectivement aux questions « quoi? » et « comment? » feront l’objet de notre activité. Cette dernière portera d’une part sur les structures des macromolécules biologiques telles que la cellulose, l’hémicellulose et l’amidon, et d’autre part sur les activités enzymatiques des différentes enzymes capables de catalyser leur digestion. Nous aborderons les mécanismes d’action des enzymes et les conditions physico-chimiques optimales de leurs activités catalytiques. La démarche déductive sera utilisée dans le cadre de cette activité d’apprentissage. L’exposé au cours duquel nous projetterons des captures d’images et vidéo sera utilisé comme méthode pédagogique afin de faciliter l’atteinte des objectifs visés. Le travail en équipes et l’étude de cas seront aussi exploités comme formules pédagogiques pour permettre aux étudiants d’approfondir et d’assimiler les connaissances acquises durant l’exposé. Les équipes constituées de 5 étudiants chacune travailleront via le wiki suivant des directives bien définies. Le cas à étudier sera traité individuellement et des grilles d’évaluation et d’auto-évaluation serviront respectivement de guide pour une évaluation sommative (travail en équipes) et formative (étude de cas-travail individuel) des étudiants. [less ▲]

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See detailComparative biochemical analysis during the anaerobic digestion of lignocellulosic biomass from six morphological parts of Williams Cavendish banana (Triploid Musa AAA group) plants
Kamdem, Irenee ULg; Hiligsmann, Serge ULg; Vanderghem, Caroline ULg et al

in World Journal of Microbiology & Biotechnology (2013)

We studied banana lignocellulosic biomass (BALICEBIOM) that is abandoned after fruit harvesting, and assessed its biochemical methane potential, because of its potential as an energy source. We monitored ... [more ▼]

We studied banana lignocellulosic biomass (BALICEBIOM) that is abandoned after fruit harvesting, and assessed its biochemical methane potential, because of its potential as an energy source. We monitored biogas production from six morphological parts (MPs) of the "Williams Cavendish" banana cultivar using a modified operating procedure (KOP) using KOH. Volatile fatty acid (VFA) production was measured using high performance liquid chromatography. The bulbs, leaf sheaths, petioles-midribs, leaf blades, rachis stems, and floral stalks gave total biogas production of 256, 205, 198, 126, 253, and 221 ml g-1 dry matter, respectively, and total biomethane production of 150, 141, 127, 98, 162, and 144 ml g-1, respectively. The biogas production rates and yields depended on the biochemical composition of the BALICEBIOM and the ability of anaerobic microbes to access fermentable substrates. There were no significant differences between the biogas analysis results produced using KOP and gas chromatography. Acetate was the major VFA in all the MP sample culture media. The bioconversion yields for each MP were below 50 %, showing that these substrates were not fully biodegraded after 188 days. The estimated electricity that could be produced from biogas combustion after fermenting all of the BALICEBIOM produced annually by the Cameroon Development Corporation-Del Monte plantations for 188 days is approximately 10.5 × 106 kW h (which would be worth 0.80-1.58 million euros in the current market). This bioenergy could serve the requirements of about 42,000 people in the region, although CH4 productivity could be improved. © 2013 Springer Science+Business Media Dordrecht. [less ▲]

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See detailProduction potentielle de bioéthanol, de biométhane et de pellets à partir des déchets de biomasse lignocellulosique du bananier (Musa spp.) au Cameroun
Kamdem, Irenée ULg; Tomekpe, Kodjo; Thonart, Philippe ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2011), 15(3), 471-483

Like most African countries who are producers and exporters of banana, Cameroon is facing a major energy deficit. Yet, the country is generating annually about 4,500,000 tons of fresh banana plant ... [more ▼]

Like most African countries who are producers and exporters of banana, Cameroon is facing a major energy deficit. Yet, the country is generating annually about 4,500,000 tons of fresh banana plant lignocellulosic waste biomass matter equivalent to 402,750 tons of dry matter. The dry matter contained about 80,57% organic matter which are not exploited. Under the sustainable development, which is linked to environmental protection, the biotransformation of these residues can potentially produce about 93,800; 92,133; 447,500 tons of bioethanol, biomethane and pellets respectively. The waste transformation could reduce the energy deficit and create jobs opportunities. Productions of this renewable energy or biofuel also constitute a new area which could assure an important source of income for the banana cultivators and the entire country. [less ▲]

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