Bovine Plasma
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2020 ◽  
Vol 22 (1) ◽  
pp. 150-158
Author(s):  
Nathalia A. Gómez Grimaldos ◽  
José E.M. Zapata

Background: modern society, there is a tendency to consume products with natural origins and minimum chemical additives. This has encouraged the replacement of synthetic antioxidants for the ones obtained from natural sources, such as the antioxidants acquired from enzymatic protein hydrolysates. Objective: In this study, the process of enzymatic hydrolysis of proteins from bovine plasma, which produces hydrolysates with an Antioxidant Capacity (AC), was scaled up from 1 to 5 L. Methods: An experimental design was developed in 1 L to evaluate the effect of the Substrate concentration (So) on the time needed to reach a Degree of Hydrolysis (DH) of 20% as well as the AC. Results: The best conditions in the 1 L reactor controlled by a Titrando 842 were transferred to 5L in a BioFlo310 reactor. These conditions were achieved at a ratio of 80g/L of the substrate and 0.89 AU of Alcalase 2.4L/g of the substrate in order to obtain a level of 16.36 ± 0.21min of the 20% of DH and antioxidant capacity of 58.98 ± 1.80%. Conclusion: The results showed that DH depends significantly on So, while the antioxidant capacity only depends on the DH. Additionally, the dimensional analysis using Re as a scaling criterion allowed us to obtain the same results in the model (1 L) and the prototype (5 L).


2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 85-85
Author(s):  
Charlotte Heyer ◽  
L F Wang ◽  
R T Zijlstra

Abstract Fermentable fiber may increase endogenous losses of P and AA, thereby reducing apparent nutrient digestibility. Acacia gum fiber with medium-to-high fermentability and low viscosity was used to investigate its effect on apparent ileal digestibility (AID) and apparent total tract digestibility (ATTD) of nutrients, and standardized total tract digestibility (STTD) of P in grower pigs. A P-free basal diet (49% corn starch; 18% bovine plasma protein) was formulated to measure basal endogenous P losses (EPL). Three diets were formulated to include 2.5, 5.0, or 7.5% acacia gum fiber at the expense of corn starch in the P-free basal diet. Diets contained 16.1–17.4% CP and 0.31–0.33% total P (DM-basis). The 4 diets were fed to 8 ileal-cannulated barrows (initial BW, 54.6 kg) for four 9-d periods in a double 4 × 4 Latin square. Apparent hindgut fermentation (AHF) was ATTD minus AID. Increasing inclusion of acacia gum quadratically decreased (P < 0.01) AID of DM (∆ 11.1%), linearly decreased (P < 0.05) ATTD of DM (∆ 1.7%) CP (∆ 1.2%), and quadratically increased (P < 0.05) AHF of DM (∆ 9.4%). Basal EPL were 391 and 377 mg/kg DM intake (DMI) for ileum and total tract, respectively. Increasing inclusion of fiber linearly increased (P < 0.05) ileal EPL (∆ 184 mg/kg DMI), and tended to linearly increase (P < 0.10) EPL for total tract (∆ 243 mg/kg DMI). Dietary inclusion of acacia gum tended to linearly decrease (P < 0.10) AID of P, but did not affect (P > 0.10) ATTD, or STTD of P. In conclusion, increasing inclusion of fermentable, low viscous acacia gum fiber decreased diet digestibility of DM and ATTD of CP, but did not affect total tract P digestibility, indicating that increasing fermentable fiber did not increase specific endogenous losses of P in the total tract.


2020 ◽  
Vol 11 (12) ◽  
pp. 10907-10912
Author(s):  
Nathalia A. Gómez-Grimaldos ◽  
Leidy J. Gómez-Sampedro ◽  
José E. Zapata-Montoya ◽  
Gabriel López-García ◽  
Antonio Cilla ◽  
...  

Bovine plasma hydrolysates with a degree of hydrolysis of 19.1% have an iron chelating capacity of 38.5 ± 0.4% and increase the synthesis of ferritin in Caco-2 cells five-fold compared to the control.


2019 ◽  
Vol 26 (2) ◽  
pp. 536-544
Author(s):  
Carla Bacchetta ◽  
Andrea S. Rossi ◽  
Raúl E. Cian ◽  
David R. Hernández ◽  
Sebastián Sánchez ◽  
...  

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