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José A. Teixeira - One of the best experts on this subject based on the ideXlab platform.
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influence of extraction solvents on the recovery of antioxidant phenolic compounds from brewer s Spent Grains
Separation and Purification Technology, 2013Co-Authors: Nuno G. T. Meneses, José A. Teixeira, Sílvia Martins, Solange I MussattoAbstract:This study evaluated the efficacy of different solvents (methanol, ethanol, acetone, hexane, ethyl acetate, water, methanol:water mixtures, ethanol:water mixtures, and acetone:water mixtures) for extracting antioxidant phenolic compounds from brewer’s Spent Grains (BSGs). The extracts were characterized regarding the contents of total phenols, flavonoids, proteins and reducing sugars. Antioxidant activity was determined by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical, and the ferric reducing antioxidant power (FRAP) assay. The solvents had different efficiencies for extraction of antioxidant phenolic compounds. All the produced extracts showed antioxidant activity, but the extract produced with 60% v/v acetone had the most elevated content of total phenols and antioxidant potential by the two methods. BSG was demonstrated to be a valuable source of antioxidant phenolic compounds, and solid-to-liquid extraction using 60% v/v acetone was a low cost and quite efficient method to recover these value-added compounds.
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a new approach on brewer s Spent Grains treatment and potential use as lignocellulosic yeast cells carriers
Journal of Agricultural and Food Chemistry, 2012Co-Authors: Eduardo J Pires, José A. Teixeira, Hector A Ruiz, A A VicenteAbstract:The major objective of this work is to improve the pretreatments of brewer’s Spent Grains (BSG) aiming at their use as a source for lignocellulosic yeast carriers (LCYC) production. Therefore, several pretreatments of BSG have been designed aiming at obtaining various yeast carriers, differing on their physicochemical composition. Cellulose, hemicellulose, lignin, fat, protein, and ash content were determined for crude BSG and the LCYCs. The long chain fatty acids profile for the crude BSG was also analyzed. Chemical treatments successfully produced several different LCYC based on BSG. The highest cellulose content in LCYC was achieved upon application of caustic (NaOH) treatment during 40 min. Either caustic or combined acid–caustic treatments predominately generated hydrophobic, negatively charged LCYC. The feasibility of using BSG for LCYC production is strengthened by the fact that added-value byproduct can be extracted before the chemical treatments are applied.
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fast chemical treatments for ligno cellulosic yeast carriers production from brewers Spent Grains
11th International Chemical and Biological Engineering Conference (CHEMPOR 2011), 2011Co-Authors: Eduardo J Pires, José A. Teixeira, A A VicenteAbstract:Caustic (NaOH) and acid-caustic (HCl + NaOH) treatments have both been previously proposed to prepare ligno-cellulosic yeast carriers from Brewers Spent Grains (BSG) [1]. However, these treatments are time consuming (more than 24 h). Base-treated carriers are more hydrophobic if compared to acid-base treated, enhancing adhesion in one hand, but more floatable and easily washed out from the reactor in the other hand [2]. Thus, a balance between hydrophilic (cellulose) and hydrophobic (lignin) composition in carriers obtained from BSG must be idealized. The aim of this study was to idealize a fast and simple treatment on ligno-cellulosic substrate from BSG.
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Immobilization of trypsin on Spent Grains for whey protein hydrolysis
Process Biochemistry, 2011Co-Authors: Cristina M. R. Rocha, Maria P. Gonçalves, José A. TeixeiraAbstract:The aims of this work were to establish an efficient protocol for trypsin immobilization on Spent Grains and to assess the influence of the chosen protocol on whey protein hydrolysis. Trypsin was immobilized onto Spent grain or modified Spent grain, through adsorption and covalent attachment. The efficiency of immobilization and operation and storage stabilities of free and immobilized enzyme on the supports were studied. The enzyme activity, kinetic parameters and the peptide profile of the protein hydrolysates from free and immobilized enzyme were also analysed. The best activity retention was achieved with the immobilization on Spent Grains through multipoint covalent attachment using glycidol. This carrier showed also very good storage and operational stability (above 90%). Trypsin immobilized on Spent Grains showed significant activity towards whey proteins. The immobilized enzyme was slightly more stable than the free enzyme at temperatures between 50 ◦C and 60 ◦ C allowing its use at a broader range of temperatures. The peptides formed with free enzyme and enzyme immobilized on Spent Grains were generally similar. However, significant differences existed in the amount of native proteins in the hydrolysates and in the relative amount of smaller peptides. © 2010 Elsevier Ltd. All rights reserved.
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Effect of Spent Grains on flow regime transition in bubble column
Chemical Engineering Science, 2011Co-Authors: André Mota, António A. Vicente, José A. TeixeiraAbstract:It is well known that two main flow regimes are present in bubble columns, being the evaluation of transition between homogeneous and heterogeneous regimes of crucial importance for reactor design. For air–water systems, several models have been satisfactorily proposed to explain this phenomenon. However when gas–liquid–solids systems are considered, solid particles influence on regime transition is not yet clear, in spite of the amount of research developed over the past years. The objective of this work is to evaluate the effect of a specific solid phase – Spent Grains – on homogeneous regime stability and regime transition. Spent Grains are cellulose-based particles that have been used to immobilize cells on biotechnology process. These particles are wettable and have a density close to water and its influence on bubble column reactors is particularly important in order to establish the limits were both regimes prevail. A cylindrical Plexiglax BC of 18 L volume was used with air, water and Spent Grains at different concentrations (0–20% (wt. WET BASIS /vol.)) as gas, liquid and solid phases. Regime transition was determined according to the drift-flux and slip speed concept. It was found that at studied concentrations of Spent Grains, critical gas hold-up decreases as solids concentration increases. At the highest solids concentration and lowest gas flow rates no fluidization of the solid phase was observed. It is believed that the critical hold-up decrease was mainly due to bubble coalescence, as larger bubbles were observed when heterogeneous regime was present. This coalescence may be caused by the non-uniform distribution of solid phase on the column and the interaction of Spent Grains with bubbles in the liquid–gas interface & 2011 Published by Elsevier Ltd.
M.s. Wagde - One of the best experts on this subject based on the ideXlab platform.
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brewer s Spent Grains bsgs as feedstuff for striped catfish pangasianodon hypophthalmus fingerlings an approach to transform waste into wealth
Journal of Cleaner Production, 2018Co-Authors: M. Jayant, M.a. Hassan, Prem Prakash Srivastava, D. K. Meena, Pankaj Kumar, A. Kumar, M.s. WagdeAbstract:Abstract The surging demand for conventional fish feed ingredients resulted in rising cost of fish feed, which is considered as a limiting factor for the expansion of aquaculture industry. There is need of alternative protein sources, especially those are by-products, and not suitable for human consumption and having the environmental concern of their safe disposal such as brewer’s Spent Grains (BSG). An experiment was conducted to assess the effect of substitution of soybean meal with brewer’s Spent Grains on growth, survival, nutrient utilization efficiency in Pangasianodon hypophthalmus fingerlings. Five iso-nitrogenous (365 g protein. kg−1 diet) and iso-caloric (20.44 MJ kg−1) experimental diets were formulated with different graded level of brewer’s Spent Grains like 0%, 25%, 50%, 75% or 100% in replacement for soybean meal and designated as control, T1, T2, T3, T4 respectively. The BSG contributed 0%, 24.26%, 47.10%, 69.51 and 91.26% of the total protein in the diets. Each diet was randomly assigned to 15 experimental tanks containing 20 fish in triplicates and fed to satiation twice daily at 09:00 h and 17:00 h. At the end of the feeding trial, weight gain percentage (WG%), specific growth rate (SGR), feed conversion ratio (FCR), protein efficiency ratio (PER) and apparent net protein utilization (ANPU) parameters were found significantly (p 0.5) among different dietary treatments. Significantly higher moisture content (p 0.05) in fish fed with 50% BSG level compared to the other BSG fed groups. Total ash and ether extract content did not change within treatment groups. Overall, this study suggests that brewer’s Spent Grains can serve as an alternate protein source with 50% level substitution of soybean meal without any adverse effect on growth, nutrient utilization and feed conversion. The finding could help in reducing the environmental concern of disposal of an agro-industrial waste by transforming a waste in the feed for commercially important fish species of aquaculture.
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Brewer’s Spent Grains (BSGs) as feedstuff for striped catfish, Pangasianodon hypophthalmus fingerlings: An approach to transform waste into wealth
Journal of Cleaner Production, 2018Co-Authors: M. Jayant, M.a. Hassan, Prem Prakash Srivastava, D. K. Meena, Pankaj Kumar, A. Kumar, M.s. WagdeAbstract:Abstract The surging demand for conventional fish feed ingredients resulted in rising cost of fish feed, which is considered as a limiting factor for the expansion of aquaculture industry. There is need of alternative protein sources, especially those are by-products, and not suitable for human consumption and having the environmental concern of their safe disposal such as brewer’s Spent Grains (BSG). An experiment was conducted to assess the effect of substitution of soybean meal with brewer’s Spent Grains on growth, survival, nutrient utilization efficiency in Pangasianodon hypophthalmus fingerlings. Five iso-nitrogenous (365 g protein. kg−1 diet) and iso-caloric (20.44 MJ kg−1) experimental diets were formulated with different graded level of brewer’s Spent Grains like 0%, 25%, 50%, 75% or 100% in replacement for soybean meal and designated as control, T1, T2, T3, T4 respectively. The BSG contributed 0%, 24.26%, 47.10%, 69.51 and 91.26% of the total protein in the diets. Each diet was randomly assigned to 15 experimental tanks containing 20 fish in triplicates and fed to satiation twice daily at 09:00 h and 17:00 h. At the end of the feeding trial, weight gain percentage (WG%), specific growth rate (SGR), feed conversion ratio (FCR), protein efficiency ratio (PER) and apparent net protein utilization (ANPU) parameters were found significantly (p 0.5) among different dietary treatments. Significantly higher moisture content (p 0.05) in fish fed with 50% BSG level compared to the other BSG fed groups. Total ash and ether extract content did not change within treatment groups. Overall, this study suggests that brewer’s Spent Grains can serve as an alternate protein source with 50% level substitution of soybean meal without any adverse effect on growth, nutrient utilization and feed conversion. The finding could help in reducing the environmental concern of disposal of an agro-industrial waste by transforming a waste in the feed for commercially important fish species of aquaculture.
M. Jayant - One of the best experts on this subject based on the ideXlab platform.
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brewer s Spent Grains bsgs as feedstuff for striped catfish pangasianodon hypophthalmus fingerlings an approach to transform waste into wealth
Journal of Cleaner Production, 2018Co-Authors: M. Jayant, M.a. Hassan, Prem Prakash Srivastava, D. K. Meena, Pankaj Kumar, A. Kumar, M.s. WagdeAbstract:Abstract The surging demand for conventional fish feed ingredients resulted in rising cost of fish feed, which is considered as a limiting factor for the expansion of aquaculture industry. There is need of alternative protein sources, especially those are by-products, and not suitable for human consumption and having the environmental concern of their safe disposal such as brewer’s Spent Grains (BSG). An experiment was conducted to assess the effect of substitution of soybean meal with brewer’s Spent Grains on growth, survival, nutrient utilization efficiency in Pangasianodon hypophthalmus fingerlings. Five iso-nitrogenous (365 g protein. kg−1 diet) and iso-caloric (20.44 MJ kg−1) experimental diets were formulated with different graded level of brewer’s Spent Grains like 0%, 25%, 50%, 75% or 100% in replacement for soybean meal and designated as control, T1, T2, T3, T4 respectively. The BSG contributed 0%, 24.26%, 47.10%, 69.51 and 91.26% of the total protein in the diets. Each diet was randomly assigned to 15 experimental tanks containing 20 fish in triplicates and fed to satiation twice daily at 09:00 h and 17:00 h. At the end of the feeding trial, weight gain percentage (WG%), specific growth rate (SGR), feed conversion ratio (FCR), protein efficiency ratio (PER) and apparent net protein utilization (ANPU) parameters were found significantly (p 0.5) among different dietary treatments. Significantly higher moisture content (p 0.05) in fish fed with 50% BSG level compared to the other BSG fed groups. Total ash and ether extract content did not change within treatment groups. Overall, this study suggests that brewer’s Spent Grains can serve as an alternate protein source with 50% level substitution of soybean meal without any adverse effect on growth, nutrient utilization and feed conversion. The finding could help in reducing the environmental concern of disposal of an agro-industrial waste by transforming a waste in the feed for commercially important fish species of aquaculture.
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Brewer’s Spent Grains (BSGs) as feedstuff for striped catfish, Pangasianodon hypophthalmus fingerlings: An approach to transform waste into wealth
Journal of Cleaner Production, 2018Co-Authors: M. Jayant, M.a. Hassan, Prem Prakash Srivastava, D. K. Meena, Pankaj Kumar, A. Kumar, M.s. WagdeAbstract:Abstract The surging demand for conventional fish feed ingredients resulted in rising cost of fish feed, which is considered as a limiting factor for the expansion of aquaculture industry. There is need of alternative protein sources, especially those are by-products, and not suitable for human consumption and having the environmental concern of their safe disposal such as brewer’s Spent Grains (BSG). An experiment was conducted to assess the effect of substitution of soybean meal with brewer’s Spent Grains on growth, survival, nutrient utilization efficiency in Pangasianodon hypophthalmus fingerlings. Five iso-nitrogenous (365 g protein. kg−1 diet) and iso-caloric (20.44 MJ kg−1) experimental diets were formulated with different graded level of brewer’s Spent Grains like 0%, 25%, 50%, 75% or 100% in replacement for soybean meal and designated as control, T1, T2, T3, T4 respectively. The BSG contributed 0%, 24.26%, 47.10%, 69.51 and 91.26% of the total protein in the diets. Each diet was randomly assigned to 15 experimental tanks containing 20 fish in triplicates and fed to satiation twice daily at 09:00 h and 17:00 h. At the end of the feeding trial, weight gain percentage (WG%), specific growth rate (SGR), feed conversion ratio (FCR), protein efficiency ratio (PER) and apparent net protein utilization (ANPU) parameters were found significantly (p 0.5) among different dietary treatments. Significantly higher moisture content (p 0.05) in fish fed with 50% BSG level compared to the other BSG fed groups. Total ash and ether extract content did not change within treatment groups. Overall, this study suggests that brewer’s Spent Grains can serve as an alternate protein source with 50% level substitution of soybean meal without any adverse effect on growth, nutrient utilization and feed conversion. The finding could help in reducing the environmental concern of disposal of an agro-industrial waste by transforming a waste in the feed for commercially important fish species of aquaculture.
M S Izydorczyk - One of the best experts on this subject based on the ideXlab platform.
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thin layer drying of Spent Grains in superheated steam
Journal of Food Engineering, 2005Co-Authors: Zhongwei Tang, Stefan Cenkowski, M S IzydorczykAbstract:Abstract An empirical equation with regression-determined coefficients was developed to describe thin-layer drying of brewers’ Spent grain (BSG) and distillers’ Spent grain (DSG) in superheated steam (SS). A small moisture gain on the sample surface due to steam condensation at the beginning of the drying caused the initial moisture ratio of the sample to increase to a value between 1.00 and 1.20 for BSG drying or between 1.00 and 1.30 for DSG drying. The moisture gain increased linearly with decreasing the temperature and/or velocity of steam. Unlike in hot-air drying, not only steam temperature but also steam velocity influenced the drying rate of BSG and DSG in SS. At 145 °C, an increase in steam velocity from 0.3 to 1.1 m/s cut the drying time by half for both Spent Grains. Increasing the SS drying temperature from 110 to 180 °C decreased the starch content in samples dried to the equilibrium moisture at the SS velocity of 0.66 m/s by 14.5% and 11.5% for BSG and DSG, respectively. Drying to the equilibrium in 145 °C at a SS velocity of 0.66 m/s caused the starch content in the samples to decrease by 22% for BSG and 23% for DSG compared with that in the non-dried material. The SS drying parameters had no effect on β-glucan, pentosan, and protein contents in the dried samples.
Pankaj Kumar - One of the best experts on this subject based on the ideXlab platform.
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brewer s Spent Grains bsgs as feedstuff for striped catfish pangasianodon hypophthalmus fingerlings an approach to transform waste into wealth
Journal of Cleaner Production, 2018Co-Authors: M. Jayant, M.a. Hassan, Prem Prakash Srivastava, D. K. Meena, Pankaj Kumar, A. Kumar, M.s. WagdeAbstract:Abstract The surging demand for conventional fish feed ingredients resulted in rising cost of fish feed, which is considered as a limiting factor for the expansion of aquaculture industry. There is need of alternative protein sources, especially those are by-products, and not suitable for human consumption and having the environmental concern of their safe disposal such as brewer’s Spent Grains (BSG). An experiment was conducted to assess the effect of substitution of soybean meal with brewer’s Spent Grains on growth, survival, nutrient utilization efficiency in Pangasianodon hypophthalmus fingerlings. Five iso-nitrogenous (365 g protein. kg−1 diet) and iso-caloric (20.44 MJ kg−1) experimental diets were formulated with different graded level of brewer’s Spent Grains like 0%, 25%, 50%, 75% or 100% in replacement for soybean meal and designated as control, T1, T2, T3, T4 respectively. The BSG contributed 0%, 24.26%, 47.10%, 69.51 and 91.26% of the total protein in the diets. Each diet was randomly assigned to 15 experimental tanks containing 20 fish in triplicates and fed to satiation twice daily at 09:00 h and 17:00 h. At the end of the feeding trial, weight gain percentage (WG%), specific growth rate (SGR), feed conversion ratio (FCR), protein efficiency ratio (PER) and apparent net protein utilization (ANPU) parameters were found significantly (p 0.5) among different dietary treatments. Significantly higher moisture content (p 0.05) in fish fed with 50% BSG level compared to the other BSG fed groups. Total ash and ether extract content did not change within treatment groups. Overall, this study suggests that brewer’s Spent Grains can serve as an alternate protein source with 50% level substitution of soybean meal without any adverse effect on growth, nutrient utilization and feed conversion. The finding could help in reducing the environmental concern of disposal of an agro-industrial waste by transforming a waste in the feed for commercially important fish species of aquaculture.
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Brewer’s Spent Grains (BSGs) as feedstuff for striped catfish, Pangasianodon hypophthalmus fingerlings: An approach to transform waste into wealth
Journal of Cleaner Production, 2018Co-Authors: M. Jayant, M.a. Hassan, Prem Prakash Srivastava, D. K. Meena, Pankaj Kumar, A. Kumar, M.s. WagdeAbstract:Abstract The surging demand for conventional fish feed ingredients resulted in rising cost of fish feed, which is considered as a limiting factor for the expansion of aquaculture industry. There is need of alternative protein sources, especially those are by-products, and not suitable for human consumption and having the environmental concern of their safe disposal such as brewer’s Spent Grains (BSG). An experiment was conducted to assess the effect of substitution of soybean meal with brewer’s Spent Grains on growth, survival, nutrient utilization efficiency in Pangasianodon hypophthalmus fingerlings. Five iso-nitrogenous (365 g protein. kg−1 diet) and iso-caloric (20.44 MJ kg−1) experimental diets were formulated with different graded level of brewer’s Spent Grains like 0%, 25%, 50%, 75% or 100% in replacement for soybean meal and designated as control, T1, T2, T3, T4 respectively. The BSG contributed 0%, 24.26%, 47.10%, 69.51 and 91.26% of the total protein in the diets. Each diet was randomly assigned to 15 experimental tanks containing 20 fish in triplicates and fed to satiation twice daily at 09:00 h and 17:00 h. At the end of the feeding trial, weight gain percentage (WG%), specific growth rate (SGR), feed conversion ratio (FCR), protein efficiency ratio (PER) and apparent net protein utilization (ANPU) parameters were found significantly (p 0.5) among different dietary treatments. Significantly higher moisture content (p 0.05) in fish fed with 50% BSG level compared to the other BSG fed groups. Total ash and ether extract content did not change within treatment groups. Overall, this study suggests that brewer’s Spent Grains can serve as an alternate protein source with 50% level substitution of soybean meal without any adverse effect on growth, nutrient utilization and feed conversion. The finding could help in reducing the environmental concern of disposal of an agro-industrial waste by transforming a waste in the feed for commercially important fish species of aquaculture.
