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Carsten Schulz - One of the best experts on this subject based on the ideXlab platform.

  • Effect of different dietary levels of Potato Protein concentrate supplemented with feed attractants on growth performance of rainbow trout (Oncorhynchus mykiss)
    Animal Feed Science and Technology, 2013
    Co-Authors: K Tusche, S Arning, Sven Wuertz, F. Nagel, Andreas Susenbeth, Carsten Schulz
    Abstract:

    The potential of Potato Protein concentrate (PPC) as a replacement for fish meal (FM) Protein was evaluated for rainbow trout (Oncorhynchus mykiss). Five diets were formulated by partial and total replacement of FM Protein (20%, 40%, 60%, 80% and 100%, designated as PP20, PP40, PP60, PP80, PP100) with PPC (glycoalkaloid 23.2 mg kg(-1) dry weight) and one experimental diet without PPC as control. Blood meal and a synthetic amino acid mixture and betaine were supplemented as feed attractants. Experimental diets were fed twice per day over a period of 56 days to triplicate experimental groups until apparent satiation. Within all groups the feed intake was unaffected compared to control (P>0.05). Feed conversion ratio was negatively affected when fish fed to PP60, PP80 and PP100. Above a FM Protein replacement of 60% growth performance was reduced (P

  • wheat gluten and Potato Protein concentrate promising Protein sources for organic farming of rainbow trout oncorhynchus mykiss
    Aquaculture, 2012
    Co-Authors: K Tusche, S Arning, Sven Wuertz, Andreas Susenbeth, Carsten Schulz
    Abstract:

    Abstract In contrast to Potato and other plant Proteins, wheat gluten does not require complex and costly purification and may thus be utilized in aquaculture diets according to aquaculture guideline EC 710/2009. Therefore, a feeding trial was conducted to evaluate the effect of various combinations of wheat gluten (WG) and Potato Protein concentrate (PPC) in nutrition of rainbow trout (Oncorhynchus mykiss). Seven isonitrogenous (459 ± 6 g CP kg− 1) and isoenergetic (21.4 ± 0.1 MJ kg− 1) diets were formulated to contain varying levels of wheat gluten and Potato Protein concentrate (6/27; 9/24; 11/21; 14/19; 17/16; 19/13 as proportion of WG/PPC in % of the diet) at constant fishmeal replacement level of 56% on Protein level and one fish meal diet served as control. Experimental diets were fed over a period of 56 days to triplicate experimental groups until apparent satiation. Growth performance showed no significant differences between all feeding groups at the end of the experimental period. No influences on health and nutritional status were documented between the treatments in the body composition and blood parameter. The wheat gluten and PPC as fish meal replacement in organic diets for rainbow trout revealed positive and equal results for use in the inclusion level of the presented trial.

  • Wheat gluten and Potato Protein concentrate — Promising Protein sources for organic farming of rainbow trout (Oncorhynchus mykiss)
    Aquaculture, 2012
    Co-Authors: K Tusche, S Arning, Sven Wuertz, Andreas Susenbeth, Carsten Schulz
    Abstract:

    Abstract In contrast to Potato and other plant Proteins, wheat gluten does not require complex and costly purification and may thus be utilized in aquaculture diets according to aquaculture guideline EC 710/2009. Therefore, a feeding trial was conducted to evaluate the effect of various combinations of wheat gluten (WG) and Potato Protein concentrate (PPC) in nutrition of rainbow trout (Oncorhynchus mykiss). Seven isonitrogenous (459 ± 6 g CP kg− 1) and isoenergetic (21.4 ± 0.1 MJ kg− 1) diets were formulated to contain varying levels of wheat gluten and Potato Protein concentrate (6/27; 9/24; 11/21; 14/19; 17/16; 19/13 as proportion of WG/PPC in % of the diet) at constant fishmeal replacement level of 56% on Protein level and one fish meal diet served as control. Experimental diets were fed over a period of 56 days to triplicate experimental groups until apparent satiation. Growth performance showed no significant differences between all feeding groups at the end of the experimental period. No influences on health and nutritional status were documented between the treatments in the body composition and blood parameter. The wheat gluten and PPC as fish meal replacement in organic diets for rainbow trout revealed positive and equal results for use in the inclusion level of the presented trial.

  • evaluation of feed attractants in Potato Protein concentrate based diets for rainbow trout oncorhynchus mykiss
    Aquaculture, 2011
    Co-Authors: K Tusche, Sven Wuertz, K Berends, Andreas Susenbeth, Carsten Schulz
    Abstract:

    Abstract A feeding trial was carried out with rainbow trout to evaluate different feed attractants in isonitrogenous (472 ± 8 g CP kg−1) and isoenergetic (21.7 ± 0.3 MJ kg−1) diets upon fish meal (FM) replacement by Potato Protein concentrates (PPCs) at 50% and low glycoalkaloid content (7 mg kg−1). After one week of acclimatization, two fish meal diets — one with 7 mg kg−1 synthetic glycoalkaloids (GFM) and one control (FM), a PPC control without additional attractants (PP), and six PPC diets with blood meal (BM 4 or 8%), mussel meal (MM 4 or 8%) and a free amino acid mixture (AM 0.5 or 1.0% alanine, glycine and betaine) as attractant were fed in triplicate until apparent satiation over a period of 56 d to the experimental groups (7 fish per tank, average initial weight 52.8 ± 0.3 g). All PPC groups revealed reduced growth when compared to the fish meal group (FM). Furthermore, all PPC groups exhibited lower growth when compared to the GFM group fed at comparable glycoalkaloid concentrations suggesting antinutritional effects apart from glycoalkaloids. Nevertheless, a PER of more than 2 in all groups indicated acceptable Protein utilization in PPC groups, additionally supported by FCR ranging between 0.92 and 1.15. Highest daily feed intake (DFI) was observed in the FM and GFM group, but reduced in all PPC groups. Among the attractants used, BM and AM resulted in the highest DFI. A good nutritional status did not reveal severe impact of PPC in general.

K Tusche - One of the best experts on this subject based on the ideXlab platform.

  • Effect of different dietary levels of Potato Protein concentrate supplemented with feed attractants on growth performance of rainbow trout (Oncorhynchus mykiss)
    Animal Feed Science and Technology, 2013
    Co-Authors: K Tusche, S Arning, Sven Wuertz, F. Nagel, Andreas Susenbeth, Carsten Schulz
    Abstract:

    The potential of Potato Protein concentrate (PPC) as a replacement for fish meal (FM) Protein was evaluated for rainbow trout (Oncorhynchus mykiss). Five diets were formulated by partial and total replacement of FM Protein (20%, 40%, 60%, 80% and 100%, designated as PP20, PP40, PP60, PP80, PP100) with PPC (glycoalkaloid 23.2 mg kg(-1) dry weight) and one experimental diet without PPC as control. Blood meal and a synthetic amino acid mixture and betaine were supplemented as feed attractants. Experimental diets were fed twice per day over a period of 56 days to triplicate experimental groups until apparent satiation. Within all groups the feed intake was unaffected compared to control (P>0.05). Feed conversion ratio was negatively affected when fish fed to PP60, PP80 and PP100. Above a FM Protein replacement of 60% growth performance was reduced (P

  • wheat gluten and Potato Protein concentrate promising Protein sources for organic farming of rainbow trout oncorhynchus mykiss
    Aquaculture, 2012
    Co-Authors: K Tusche, S Arning, Sven Wuertz, Andreas Susenbeth, Carsten Schulz
    Abstract:

    Abstract In contrast to Potato and other plant Proteins, wheat gluten does not require complex and costly purification and may thus be utilized in aquaculture diets according to aquaculture guideline EC 710/2009. Therefore, a feeding trial was conducted to evaluate the effect of various combinations of wheat gluten (WG) and Potato Protein concentrate (PPC) in nutrition of rainbow trout (Oncorhynchus mykiss). Seven isonitrogenous (459 ± 6 g CP kg− 1) and isoenergetic (21.4 ± 0.1 MJ kg− 1) diets were formulated to contain varying levels of wheat gluten and Potato Protein concentrate (6/27; 9/24; 11/21; 14/19; 17/16; 19/13 as proportion of WG/PPC in % of the diet) at constant fishmeal replacement level of 56% on Protein level and one fish meal diet served as control. Experimental diets were fed over a period of 56 days to triplicate experimental groups until apparent satiation. Growth performance showed no significant differences between all feeding groups at the end of the experimental period. No influences on health and nutritional status were documented between the treatments in the body composition and blood parameter. The wheat gluten and PPC as fish meal replacement in organic diets for rainbow trout revealed positive and equal results for use in the inclusion level of the presented trial.

  • Wheat gluten and Potato Protein concentrate — Promising Protein sources for organic farming of rainbow trout (Oncorhynchus mykiss)
    Aquaculture, 2012
    Co-Authors: K Tusche, S Arning, Sven Wuertz, Andreas Susenbeth, Carsten Schulz
    Abstract:

    Abstract In contrast to Potato and other plant Proteins, wheat gluten does not require complex and costly purification and may thus be utilized in aquaculture diets according to aquaculture guideline EC 710/2009. Therefore, a feeding trial was conducted to evaluate the effect of various combinations of wheat gluten (WG) and Potato Protein concentrate (PPC) in nutrition of rainbow trout (Oncorhynchus mykiss). Seven isonitrogenous (459 ± 6 g CP kg− 1) and isoenergetic (21.4 ± 0.1 MJ kg− 1) diets were formulated to contain varying levels of wheat gluten and Potato Protein concentrate (6/27; 9/24; 11/21; 14/19; 17/16; 19/13 as proportion of WG/PPC in % of the diet) at constant fishmeal replacement level of 56% on Protein level and one fish meal diet served as control. Experimental diets were fed over a period of 56 days to triplicate experimental groups until apparent satiation. Growth performance showed no significant differences between all feeding groups at the end of the experimental period. No influences on health and nutritional status were documented between the treatments in the body composition and blood parameter. The wheat gluten and PPC as fish meal replacement in organic diets for rainbow trout revealed positive and equal results for use in the inclusion level of the presented trial.

  • evaluation of feed attractants in Potato Protein concentrate based diets for rainbow trout oncorhynchus mykiss
    Aquaculture, 2011
    Co-Authors: K Tusche, Sven Wuertz, K Berends, Andreas Susenbeth, Carsten Schulz
    Abstract:

    Abstract A feeding trial was carried out with rainbow trout to evaluate different feed attractants in isonitrogenous (472 ± 8 g CP kg−1) and isoenergetic (21.7 ± 0.3 MJ kg−1) diets upon fish meal (FM) replacement by Potato Protein concentrates (PPCs) at 50% and low glycoalkaloid content (7 mg kg−1). After one week of acclimatization, two fish meal diets — one with 7 mg kg−1 synthetic glycoalkaloids (GFM) and one control (FM), a PPC control without additional attractants (PP), and six PPC diets with blood meal (BM 4 or 8%), mussel meal (MM 4 or 8%) and a free amino acid mixture (AM 0.5 or 1.0% alanine, glycine and betaine) as attractant were fed in triplicate until apparent satiation over a period of 56 d to the experimental groups (7 fish per tank, average initial weight 52.8 ± 0.3 g). All PPC groups revealed reduced growth when compared to the fish meal group (FM). Furthermore, all PPC groups exhibited lower growth when compared to the GFM group fed at comparable glycoalkaloid concentrations suggesting antinutritional effects apart from glycoalkaloids. Nevertheless, a PER of more than 2 in all groups indicated acceptable Protein utilization in PPC groups, additionally supported by FCR ranging between 0.92 and 1.15. Highest daily feed intake (DFI) was observed in the FM and GFM group, but reduced in all PPC groups. Among the attractants used, BM and AM resulted in the highest DFI. A good nutritional status did not reveal severe impact of PPC in general.

Andreas Susenbeth - One of the best experts on this subject based on the ideXlab platform.

  • Effect of different dietary levels of Potato Protein concentrate supplemented with feed attractants on growth performance of rainbow trout (Oncorhynchus mykiss)
    Animal Feed Science and Technology, 2013
    Co-Authors: K Tusche, S Arning, Sven Wuertz, F. Nagel, Andreas Susenbeth, Carsten Schulz
    Abstract:

    The potential of Potato Protein concentrate (PPC) as a replacement for fish meal (FM) Protein was evaluated for rainbow trout (Oncorhynchus mykiss). Five diets were formulated by partial and total replacement of FM Protein (20%, 40%, 60%, 80% and 100%, designated as PP20, PP40, PP60, PP80, PP100) with PPC (glycoalkaloid 23.2 mg kg(-1) dry weight) and one experimental diet without PPC as control. Blood meal and a synthetic amino acid mixture and betaine were supplemented as feed attractants. Experimental diets were fed twice per day over a period of 56 days to triplicate experimental groups until apparent satiation. Within all groups the feed intake was unaffected compared to control (P>0.05). Feed conversion ratio was negatively affected when fish fed to PP60, PP80 and PP100. Above a FM Protein replacement of 60% growth performance was reduced (P

  • wheat gluten and Potato Protein concentrate promising Protein sources for organic farming of rainbow trout oncorhynchus mykiss
    Aquaculture, 2012
    Co-Authors: K Tusche, S Arning, Sven Wuertz, Andreas Susenbeth, Carsten Schulz
    Abstract:

    Abstract In contrast to Potato and other plant Proteins, wheat gluten does not require complex and costly purification and may thus be utilized in aquaculture diets according to aquaculture guideline EC 710/2009. Therefore, a feeding trial was conducted to evaluate the effect of various combinations of wheat gluten (WG) and Potato Protein concentrate (PPC) in nutrition of rainbow trout (Oncorhynchus mykiss). Seven isonitrogenous (459 ± 6 g CP kg− 1) and isoenergetic (21.4 ± 0.1 MJ kg− 1) diets were formulated to contain varying levels of wheat gluten and Potato Protein concentrate (6/27; 9/24; 11/21; 14/19; 17/16; 19/13 as proportion of WG/PPC in % of the diet) at constant fishmeal replacement level of 56% on Protein level and one fish meal diet served as control. Experimental diets were fed over a period of 56 days to triplicate experimental groups until apparent satiation. Growth performance showed no significant differences between all feeding groups at the end of the experimental period. No influences on health and nutritional status were documented between the treatments in the body composition and blood parameter. The wheat gluten and PPC as fish meal replacement in organic diets for rainbow trout revealed positive and equal results for use in the inclusion level of the presented trial.

  • Wheat gluten and Potato Protein concentrate — Promising Protein sources for organic farming of rainbow trout (Oncorhynchus mykiss)
    Aquaculture, 2012
    Co-Authors: K Tusche, S Arning, Sven Wuertz, Andreas Susenbeth, Carsten Schulz
    Abstract:

    Abstract In contrast to Potato and other plant Proteins, wheat gluten does not require complex and costly purification and may thus be utilized in aquaculture diets according to aquaculture guideline EC 710/2009. Therefore, a feeding trial was conducted to evaluate the effect of various combinations of wheat gluten (WG) and Potato Protein concentrate (PPC) in nutrition of rainbow trout (Oncorhynchus mykiss). Seven isonitrogenous (459 ± 6 g CP kg− 1) and isoenergetic (21.4 ± 0.1 MJ kg− 1) diets were formulated to contain varying levels of wheat gluten and Potato Protein concentrate (6/27; 9/24; 11/21; 14/19; 17/16; 19/13 as proportion of WG/PPC in % of the diet) at constant fishmeal replacement level of 56% on Protein level and one fish meal diet served as control. Experimental diets were fed over a period of 56 days to triplicate experimental groups until apparent satiation. Growth performance showed no significant differences between all feeding groups at the end of the experimental period. No influences on health and nutritional status were documented between the treatments in the body composition and blood parameter. The wheat gluten and PPC as fish meal replacement in organic diets for rainbow trout revealed positive and equal results for use in the inclusion level of the presented trial.

  • evaluation of feed attractants in Potato Protein concentrate based diets for rainbow trout oncorhynchus mykiss
    Aquaculture, 2011
    Co-Authors: K Tusche, Sven Wuertz, K Berends, Andreas Susenbeth, Carsten Schulz
    Abstract:

    Abstract A feeding trial was carried out with rainbow trout to evaluate different feed attractants in isonitrogenous (472 ± 8 g CP kg−1) and isoenergetic (21.7 ± 0.3 MJ kg−1) diets upon fish meal (FM) replacement by Potato Protein concentrates (PPCs) at 50% and low glycoalkaloid content (7 mg kg−1). After one week of acclimatization, two fish meal diets — one with 7 mg kg−1 synthetic glycoalkaloids (GFM) and one control (FM), a PPC control without additional attractants (PP), and six PPC diets with blood meal (BM 4 or 8%), mussel meal (MM 4 or 8%) and a free amino acid mixture (AM 0.5 or 1.0% alanine, glycine and betaine) as attractant were fed in triplicate until apparent satiation over a period of 56 d to the experimental groups (7 fish per tank, average initial weight 52.8 ± 0.3 g). All PPC groups revealed reduced growth when compared to the fish meal group (FM). Furthermore, all PPC groups exhibited lower growth when compared to the GFM group fed at comparable glycoalkaloid concentrations suggesting antinutritional effects apart from glycoalkaloids. Nevertheless, a PER of more than 2 in all groups indicated acceptable Protein utilization in PPC groups, additionally supported by FCR ranging between 0.92 and 1.15. Highest daily feed intake (DFI) was observed in the FM and GFM group, but reduced in all PPC groups. Among the attractants used, BM and AM resulted in the highest DFI. A good nutritional status did not reveal severe impact of PPC in general.

Sven Wuertz - One of the best experts on this subject based on the ideXlab platform.

  • Effect of different dietary levels of Potato Protein concentrate supplemented with feed attractants on growth performance of rainbow trout (Oncorhynchus mykiss)
    Animal Feed Science and Technology, 2013
    Co-Authors: K Tusche, S Arning, Sven Wuertz, F. Nagel, Andreas Susenbeth, Carsten Schulz
    Abstract:

    The potential of Potato Protein concentrate (PPC) as a replacement for fish meal (FM) Protein was evaluated for rainbow trout (Oncorhynchus mykiss). Five diets were formulated by partial and total replacement of FM Protein (20%, 40%, 60%, 80% and 100%, designated as PP20, PP40, PP60, PP80, PP100) with PPC (glycoalkaloid 23.2 mg kg(-1) dry weight) and one experimental diet without PPC as control. Blood meal and a synthetic amino acid mixture and betaine were supplemented as feed attractants. Experimental diets were fed twice per day over a period of 56 days to triplicate experimental groups until apparent satiation. Within all groups the feed intake was unaffected compared to control (P>0.05). Feed conversion ratio was negatively affected when fish fed to PP60, PP80 and PP100. Above a FM Protein replacement of 60% growth performance was reduced (P

  • wheat gluten and Potato Protein concentrate promising Protein sources for organic farming of rainbow trout oncorhynchus mykiss
    Aquaculture, 2012
    Co-Authors: K Tusche, S Arning, Sven Wuertz, Andreas Susenbeth, Carsten Schulz
    Abstract:

    Abstract In contrast to Potato and other plant Proteins, wheat gluten does not require complex and costly purification and may thus be utilized in aquaculture diets according to aquaculture guideline EC 710/2009. Therefore, a feeding trial was conducted to evaluate the effect of various combinations of wheat gluten (WG) and Potato Protein concentrate (PPC) in nutrition of rainbow trout (Oncorhynchus mykiss). Seven isonitrogenous (459 ± 6 g CP kg− 1) and isoenergetic (21.4 ± 0.1 MJ kg− 1) diets were formulated to contain varying levels of wheat gluten and Potato Protein concentrate (6/27; 9/24; 11/21; 14/19; 17/16; 19/13 as proportion of WG/PPC in % of the diet) at constant fishmeal replacement level of 56% on Protein level and one fish meal diet served as control. Experimental diets were fed over a period of 56 days to triplicate experimental groups until apparent satiation. Growth performance showed no significant differences between all feeding groups at the end of the experimental period. No influences on health and nutritional status were documented between the treatments in the body composition and blood parameter. The wheat gluten and PPC as fish meal replacement in organic diets for rainbow trout revealed positive and equal results for use in the inclusion level of the presented trial.

  • Wheat gluten and Potato Protein concentrate — Promising Protein sources for organic farming of rainbow trout (Oncorhynchus mykiss)
    Aquaculture, 2012
    Co-Authors: K Tusche, S Arning, Sven Wuertz, Andreas Susenbeth, Carsten Schulz
    Abstract:

    Abstract In contrast to Potato and other plant Proteins, wheat gluten does not require complex and costly purification and may thus be utilized in aquaculture diets according to aquaculture guideline EC 710/2009. Therefore, a feeding trial was conducted to evaluate the effect of various combinations of wheat gluten (WG) and Potato Protein concentrate (PPC) in nutrition of rainbow trout (Oncorhynchus mykiss). Seven isonitrogenous (459 ± 6 g CP kg− 1) and isoenergetic (21.4 ± 0.1 MJ kg− 1) diets were formulated to contain varying levels of wheat gluten and Potato Protein concentrate (6/27; 9/24; 11/21; 14/19; 17/16; 19/13 as proportion of WG/PPC in % of the diet) at constant fishmeal replacement level of 56% on Protein level and one fish meal diet served as control. Experimental diets were fed over a period of 56 days to triplicate experimental groups until apparent satiation. Growth performance showed no significant differences between all feeding groups at the end of the experimental period. No influences on health and nutritional status were documented between the treatments in the body composition and blood parameter. The wheat gluten and PPC as fish meal replacement in organic diets for rainbow trout revealed positive and equal results for use in the inclusion level of the presented trial.

  • evaluation of feed attractants in Potato Protein concentrate based diets for rainbow trout oncorhynchus mykiss
    Aquaculture, 2011
    Co-Authors: K Tusche, Sven Wuertz, K Berends, Andreas Susenbeth, Carsten Schulz
    Abstract:

    Abstract A feeding trial was carried out with rainbow trout to evaluate different feed attractants in isonitrogenous (472 ± 8 g CP kg−1) and isoenergetic (21.7 ± 0.3 MJ kg−1) diets upon fish meal (FM) replacement by Potato Protein concentrates (PPCs) at 50% and low glycoalkaloid content (7 mg kg−1). After one week of acclimatization, two fish meal diets — one with 7 mg kg−1 synthetic glycoalkaloids (GFM) and one control (FM), a PPC control without additional attractants (PP), and six PPC diets with blood meal (BM 4 or 8%), mussel meal (MM 4 or 8%) and a free amino acid mixture (AM 0.5 or 1.0% alanine, glycine and betaine) as attractant were fed in triplicate until apparent satiation over a period of 56 d to the experimental groups (7 fish per tank, average initial weight 52.8 ± 0.3 g). All PPC groups revealed reduced growth when compared to the fish meal group (FM). Furthermore, all PPC groups exhibited lower growth when compared to the GFM group fed at comparable glycoalkaloid concentrations suggesting antinutritional effects apart from glycoalkaloids. Nevertheless, a PER of more than 2 in all groups indicated acceptable Protein utilization in PPC groups, additionally supported by FCR ranging between 0.92 and 1.15. Highest daily feed intake (DFI) was observed in the FM and GFM group, but reduced in all PPC groups. Among the attractants used, BM and AM resulted in the highest DFI. A good nutritional status did not reveal severe impact of PPC in general.

Wojciech Mazurczyk - One of the best experts on this subject based on the ideXlab platform.

  • variability in the composition of Potato Protein concentrate produced in different starch factories a preliminary survey
    Animal Feed Science and Technology, 2009
    Co-Authors: B. Pastuszewska, Magdalena Taciak, A. Waśko, Wojciech Mazurczyk
    Abstract:

    Abstract Eighteen samples of Potato Protein concentrate (PPC) produced in 3 starch factories (A, B and C) during 6, 4 and 8 consecutive 10-day periods were analysed for dry matter (DM), crude Protein, ash, starch, available lysine, total solanidine glycoalkaloids contents and trypsin inhibitor activity. In addition, 3 pooled samples, representative of the PPC produced in each of the 3 factories during the whole campaign, were analysed for crude fibre, fat and amino acid content. Significant differences were found among factories for crude Protein (800.3 and 807.0 g/kg vs 824.0 g/kg DM, P ≤0.001), starch (72.8 and 74.7 g/kg vs 76.8 g/kg DM, P ≤0.01), and ash (26.4 and 28.1 g/kg vs 30.6 g/kg DM, P ≤0.001) contents. The amino acid content of the pooled PPC samples was similar for the 3 plants, with an average value of 7.63 for lysine, 3.67 for methionine and cystine, 5.43 for threonine and 1.44 g/16 gN for tryptophan. Solanidine glycoalkaloids concentration was lower in PPC from A and B than C factory (1390 and 927 mg/kg vs 2632 mg/kg, P ≤0.001, respectively). Also, trypsin inhibitor activity differed among plants (0.97, 3.70 and 2.28 mg/g, for factories A, B and C, respectively, P ≤0.001). The composition of PPC did not change during the campaign. It is concluded that the chemical composition of PPC is fairly uniform whereas the concentration of antinutrients differs considerably among plants.

  • Variability in the composition of Potato Protein concentrate produced in different starch factories—A preliminary survey
    Animal Feed Science and Technology, 2009
    Co-Authors: B. Pastuszewska, Magdalena Taciak, A. Waśko, Wojciech Mazurczyk
    Abstract:

    Abstract Eighteen samples of Potato Protein concentrate (PPC) produced in 3 starch factories (A, B and C) during 6, 4 and 8 consecutive 10-day periods were analysed for dry matter (DM), crude Protein, ash, starch, available lysine, total solanidine glycoalkaloids contents and trypsin inhibitor activity. In addition, 3 pooled samples, representative of the PPC produced in each of the 3 factories during the whole campaign, were analysed for crude fibre, fat and amino acid content. Significant differences were found among factories for crude Protein (800.3 and 807.0 g/kg vs 824.0 g/kg DM, P ≤0.001), starch (72.8 and 74.7 g/kg vs 76.8 g/kg DM, P ≤0.01), and ash (26.4 and 28.1 g/kg vs 30.6 g/kg DM, P ≤0.001) contents. The amino acid content of the pooled PPC samples was similar for the 3 plants, with an average value of 7.63 for lysine, 3.67 for methionine and cystine, 5.43 for threonine and 1.44 g/16 gN for tryptophan. Solanidine glycoalkaloids concentration was lower in PPC from A and B than C factory (1390 and 927 mg/kg vs 2632 mg/kg, P ≤0.001, respectively). Also, trypsin inhibitor activity differed among plants (0.97, 3.70 and 2.28 mg/g, for factories A, B and C, respectively, P ≤0.001). The composition of PPC did not change during the campaign. It is concluded that the chemical composition of PPC is fairly uniform whereas the concentration of antinutrients differs considerably among plants.