The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform
Frédéric Fine - One of the best experts on this subject based on the ideXlab platform.
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Rapeseed and Sunflower Meal: a review on biotechnology status and challenges
Applied Microbiology and Biotechnology, 2015Co-Authors: Anne Lomascolo, Eva Boukhris-uzan, Jean-claude Sigoillot, Frédéric FineAbstract:Rapeseed and Sunflower are two of the world's major oilseeds. Rapeseed and Sunflower Meal (RSM and SFM), the by-products of oil extraction, are produced in large quantities. They are mainly composed of proteins, lignocellulosic fibres and minerals. They were initially used as a protein complement in animal feed rations and sometimes as fertilizer or as combustible source. More recently, new alternatives to these traditional uses have been developed that draw on the structure and physicochemical properties of RSM and SFM, which are plentiful sources of nitrogen and carbon nutrients. This feature, together with their cheapness and ready availability, supports the cultivation of various microorganisms in both submerged cultures and solid-state fermentation. Recent studies have thus emphasized the potential utilisation of RSM and SFM in fermentative processes, including saccharification and production of enzymes, antibiotics, antioxidants and other bio-products, opening new challenging perspectives in white biotechnology applications.
Anne Lomascolo - One of the best experts on this subject based on the ideXlab platform.
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Rapeseed and Sunflower Meal: a review on biotechnology status and challenges
Applied Microbiology and Biotechnology, 2015Co-Authors: Anne Lomascolo, Eva Boukhris-uzan, Jean-claude Sigoillot, Frédéric FineAbstract:Rapeseed and Sunflower are two of the world's major oilseeds. Rapeseed and Sunflower Meal (RSM and SFM), the by-products of oil extraction, are produced in large quantities. They are mainly composed of proteins, lignocellulosic fibres and minerals. They were initially used as a protein complement in animal feed rations and sometimes as fertilizer or as combustible source. More recently, new alternatives to these traditional uses have been developed that draw on the structure and physicochemical properties of RSM and SFM, which are plentiful sources of nitrogen and carbon nutrients. This feature, together with their cheapness and ready availability, supports the cultivation of various microorganisms in both submerged cultures and solid-state fermentation. Recent studies have thus emphasized the potential utilisation of RSM and SFM in fermentative processes, including saccharification and production of enzymes, antibiotics, antioxidants and other bio-products, opening new challenging perspectives in white biotechnology applications.
Radmilo Colovic - One of the best experts on this subject based on the ideXlab platform.
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optimization of the classification process in the zigzag air classifier for obtaining a high protein Sunflower Meal chemometric and cfd approach
Advanced Powder Technology, 2017Co-Authors: Vojislav Banjac, Lato Pezo, Milada Pezo, Aleksandar Fišteš, đuro Vukmirovic, Dusica Colovic, Radmilo ColovicAbstract:Abstract In this study, Sunflower Meal is ground by a hammer mill after which air zigzag gravitational air classifier is used for separating Sunflower hulls from the kernels in order to obtain protein rich fractions. Three hammer mill sieves with sieve openings diameter of 3, 2 and 1 mm were used, while three air flows (5, 8.7 and 12.5 m 3 /h) and three feed rates (30%, 60% an 90% of bowl feeder oscillation maximum rate) were varied during air classification process. For describing the effects of the test variables on the observed responses Principal Component Analysis, Standard Score analysis and Response Surface Methodology were used. Beside experimental investigations, CFD model was used for numerical optimization of Sunflower Meal air classification process. Air classification of hammer milled Sunflower Meal resulted in coarse fractions enriched in protein content. The decrease in sieve openings diameter of the hammer mill sieve increased protein content in coarse fractions of Sunflower Meal obtained at same air flow, and at the same time decreased matching fraction yield. Increase in air flow lead to the increase in protein content along the same hammer mill sieve. Standard score analysis showed that optimum values for protein content and ratio of coarse and fine fractions have been obtained by using a sieve with 1 mm opening diameter, air flow of 12.5 m 3 /h and 60% of the maximum feeder rate. Fraction ratio and protein content were mostly affected by the linear term of air flow and the sieve openings diameter of the hammer mill sieve in the Second Order Polynomial model. The main focus of CFD analysis was on the particle simulation and the evaluation of the separation efficiency of the zigzag classifier.
Vojislav Banjac - One of the best experts on this subject based on the ideXlab platform.
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optimization of the classification process in the zigzag air classifier for obtaining a high protein Sunflower Meal chemometric and cfd approach
Advanced Powder Technology, 2017Co-Authors: Vojislav Banjac, Lato Pezo, Milada Pezo, Aleksandar Fišteš, đuro Vukmirovic, Dusica Colovic, Radmilo ColovicAbstract:Abstract In this study, Sunflower Meal is ground by a hammer mill after which air zigzag gravitational air classifier is used for separating Sunflower hulls from the kernels in order to obtain protein rich fractions. Three hammer mill sieves with sieve openings diameter of 3, 2 and 1 mm were used, while three air flows (5, 8.7 and 12.5 m 3 /h) and three feed rates (30%, 60% an 90% of bowl feeder oscillation maximum rate) were varied during air classification process. For describing the effects of the test variables on the observed responses Principal Component Analysis, Standard Score analysis and Response Surface Methodology were used. Beside experimental investigations, CFD model was used for numerical optimization of Sunflower Meal air classification process. Air classification of hammer milled Sunflower Meal resulted in coarse fractions enriched in protein content. The decrease in sieve openings diameter of the hammer mill sieve increased protein content in coarse fractions of Sunflower Meal obtained at same air flow, and at the same time decreased matching fraction yield. Increase in air flow lead to the increase in protein content along the same hammer mill sieve. Standard score analysis showed that optimum values for protein content and ratio of coarse and fine fractions have been obtained by using a sieve with 1 mm opening diameter, air flow of 12.5 m 3 /h and 60% of the maximum feeder rate. Fraction ratio and protein content were mostly affected by the linear term of air flow and the sieve openings diameter of the hammer mill sieve in the Second Order Polynomial model. The main focus of CFD analysis was on the particle simulation and the evaluation of the separation efficiency of the zigzag classifier.
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Optimization of the classification process in the zigzag air classifier for obtaining a high protein Sunflower Meal – Chemometric and CFD approach
Advanced Powder Technology, 2017Co-Authors: Vojislav Banjac, Lato Pezo, Đuro Vukmirović, Dušica Čolović, Milada Pezo, Aleksandar Fišteš, Radmilo ČolovićAbstract:Abstract In this study, Sunflower Meal is ground by a hammer mill after which air zigzag gravitational air classifier is used for separating Sunflower hulls from the kernels in order to obtain protein rich fractions. Three hammer mill sieves with sieve openings diameter of 3, 2 and 1 mm were used, while three air flows (5, 8.7 and 12.5 m 3 /h) and three feed rates (30%, 60% an 90% of bowl feeder oscillation maximum rate) were varied during air classification process. For describing the effects of the test variables on the observed responses Principal Component Analysis, Standard Score analysis and Response Surface Methodology were used. Beside experimental investigations, CFD model was used for numerical optimization of Sunflower Meal air classification process. Air classification of hammer milled Sunflower Meal resulted in coarse fractions enriched in protein content. The decrease in sieve openings diameter of the hammer mill sieve increased protein content in coarse fractions of Sunflower Meal obtained at same air flow, and at the same time decreased matching fraction yield. Increase in air flow lead to the increase in protein content along the same hammer mill sieve. Standard score analysis showed that optimum values for protein content and ratio of coarse and fine fractions have been obtained by using a sieve with 1 mm opening diameter, air flow of 12.5 m 3 /h and 60% of the maximum feeder rate. Fraction ratio and protein content were mostly affected by the linear term of air flow and the sieve openings diameter of the hammer mill sieve in the Second Order Polynomial model. The main focus of CFD analysis was on the particle simulation and the evaluation of the separation efficiency of the zigzag classifier.
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Effects of Sunflower Meal quality on the technical parameters of the pelleting process and pellet quality
Biosystems Engineering, 2015Co-Authors: Radmilo Čolović, Lato Pezo, Đuro Vukmirović, Dušica Čolović, Oskar Bera, Vojislav Banjac, J. LevićAbstract:The impact of Sunflower Meal quality (i.e. crude protein content and crude fibre content) on the technical parameters of the pelleting process and the physical properties of produced pellets was investigated. Five model mixtures were prepared for pelleting, with different ratios of corn, Sunflower Meal (SFM) and soybean Meal (SBM). Three grades of Sunflower Meal were used in the experiments with crude protein contents of approximately 37%, 40%, and 43%. Within each of the mixtures, granulation of material and retention time in the steam conditioner were varied. In order to describe the effects of the test variables on the observed responses response surface methodology, standard score analysis and principal component analysis (PCA) were used. The increase in the protein content and the decrease in the crude fibre content of Sunflower Meals caused an increase in the pelleting temperature, specific energy consumption, pellet hardness, and pellet durability. In addition, an increase in retention time increased specific energy consumption of pellet press, and produced fines. In terms of pellet durability values, a longer retention time was more beneficial for SFM mixtures than for SBM mixture. The type of mixture was found to be the most influential variable for second order polynomial model calculation. Standard score analysis showed that the optimum values for energy consumption, quantity of the fines, and pellet durability indices were obtained for the mixture with 40% protein SFM, with no retention after conditioning and with the finest granulation of the components (0.933). PCA showed that the first two principal components (91.10% of the total variability) enabled a neat separation of the five mixtures.
Eva Boukhris-uzan - One of the best experts on this subject based on the ideXlab platform.
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Rapeseed and Sunflower Meal: a review on biotechnology status and challenges
Applied Microbiology and Biotechnology, 2015Co-Authors: Anne Lomascolo, Eva Boukhris-uzan, Jean-claude Sigoillot, Frédéric FineAbstract:Rapeseed and Sunflower are two of the world's major oilseeds. Rapeseed and Sunflower Meal (RSM and SFM), the by-products of oil extraction, are produced in large quantities. They are mainly composed of proteins, lignocellulosic fibres and minerals. They were initially used as a protein complement in animal feed rations and sometimes as fertilizer or as combustible source. More recently, new alternatives to these traditional uses have been developed that draw on the structure and physicochemical properties of RSM and SFM, which are plentiful sources of nitrogen and carbon nutrients. This feature, together with their cheapness and ready availability, supports the cultivation of various microorganisms in both submerged cultures and solid-state fermentation. Recent studies have thus emphasized the potential utilisation of RSM and SFM in fermentative processes, including saccharification and production of enzymes, antibiotics, antioxidants and other bio-products, opening new challenging perspectives in white biotechnology applications.
