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Physicochemical, functional properties and antioxidant activities of porcine cerebral hydrolysate peptides produced by ultrasound processing. Process Biochem 2016. [DOI: 10.1016/j.procbio.2015.12.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Zou Y, Ding Y, Feng W, Wang W, Li Q, Chen Y, Wu H, Wang X, Yang L, Wu X. Enzymolysis kinetics, thermodynamics and model of porcine cerebral protein with single-frequency countercurrent and pulsed ultrasound-assisted processing. ULTRASONICS SONOCHEMISTRY 2016; 28:294-301. [PMID: 26384911 DOI: 10.1016/j.ultsonch.2015.08.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 07/24/2015] [Accepted: 08/11/2015] [Indexed: 06/05/2023]
Abstract
The present work investigated the enzymolysis kinetics, thermodynamics and model of porcine cerebral protein (PCP) which was pretreated by single-frequency countercurrent and pulsed ultrasound. The kinetic constants for ultrasonic pretreated and traditional enzymolysis have been determined. Results showed that the value of KM in ultrasonic PCP (UPCP) enzymolysis decreased by 9% over that in the traditional enzymolysis. The values of reaction rate constant (k) for UPCP enzymolysis increased by 207%, 121%, 62%, and 45% at 293, 303, 313 and 323 K, respectively. For the thermodynamic parameters, ultrasound decreased activation energy (Ea), change in enthalpy (ΔH) and entropy (ΔS) by 76%, 82% and 31% in PCP, respectively. However, ultrasound had little change in Gibbs free energy (ΔG) value in the temperature range of 293-323 K. Therefore, a general kinetic equation for the enzymolysis model of UPCP by a simple empirical equation was suggested. The experimental values fits with the enzymolysis kinetic model with a low average relative error (4%) confirmed that the kinetic model was accurate to reflect the enzymolysis process. The positive effect of single-frequency countercurrent and pulsed ultrasound in this study and application of the kinetic model may be useful for the release of bioactive peptides from meat processing by-products.
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Affiliation(s)
- Ye Zou
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Yangyang Ding
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Weiwei Feng
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Wei Wang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Qian Li
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Yao Chen
- School of the Environment and Safety, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Huiyu Wu
- School of Pharmacy, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Xintong Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China
| | - Liuqing Yang
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China.
| | - Xiangyang Wu
- School of the Environment and Safety, Jiangsu University, 301 Xuefu Rd., 212013 Zhenjiang, Jiangsu, China.
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Zou Y, Feng W, Wang W, Chen Y, Zhou Z, Li Q, Zhao T, Mao G, Wu X, Yang L. Protective Effect of Porcine Cerebral Hydrolysate Peptides on Learning and Memory Deficits and Oxidative Stress in Lead-Exposed Mice. Biol Trace Elem Res 2015; 168:429-40. [PMID: 25956150 DOI: 10.1007/s12011-015-0329-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 03/26/2015] [Indexed: 02/02/2023]
Abstract
In this study, lead acetate solution and porcine cerebral hydrolysate peptides (PCHPs) were administered to developing mice. Porcine cerebral protein pretreated by ultrasound was hydrolyzed with alcalase, and 11 peptide fragments were obtained by Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) analysis of PCHPs. Our data showed that PCHPs significantly decreased Pb2+-induced spontaneous locomotor activity, latencies to reach the platform, and the time in target quadrant. It also decreased the accumulation of lead in the blood and brain of Pb2+-exposed developing mice. Co-administration of PCHPs and dimercaptosuccinic acid (DMSA) did not only reduce the accumulation of lead in blood but also increased the absorption of zinc and iron in Pb2+-exposed mice. Administration of PCHPs individually significantly enhanced hematopoietic parameters compared with the Pb2+-exposed group. PCHPs significantly reduced the levels of reactive oxygen species (ROS) and malondialdehyde (MDA) but increased glutathione (GSH) content and anti-oxidant enzymes and nitric oxide synthase (NOS) activities in Pb2+-exposed brain. Our findings suggest that PCHPs have the ability to protect against Pb2+-exposed learning and memory deficits and oxidative damage.
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Affiliation(s)
- Ye Zou
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., Zhenjiang, 212013, Jiangsu, China
| | - Weiwei Feng
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., Zhenjiang, 212013, Jiangsu, China
| | - Wei Wang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., Zhenjiang, 212013, Jiangsu, China
| | - Yao Chen
- School of the Environment, Jiangsu University, 301 Xuefu Rd., Zhenjiang, 212013, Jiangsu, China
| | - Zhaoxiang Zhou
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Rd., Zhenjiang, 212013, Jiangsu, China
| | - Qian Li
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Rd., Zhenjiang, 212013, Jiangsu, China
| | - Ting Zhao
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Rd., Zhenjiang, 212013, Jiangsu, China
| | - Guanghua Mao
- School of the Environment, Jiangsu University, 301 Xuefu Rd., Zhenjiang, 212013, Jiangsu, China
| | - Xiangyang Wu
- School of the Environment, Jiangsu University, 301 Xuefu Rd., Zhenjiang, 212013, Jiangsu, China.
| | - Liuqing Yang
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Rd., Zhenjiang, 212013, Jiangsu, China.
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Abstract
The newest results in the application of various chromatographic methods (gas-liquid chromatography, liquid chromatographic techniques, electrically driven systems) for the separation and quantitative determination of amino acids and short peptides in pure state and in complicated matrices are compiled. The results are concisely described and critically evaluated. The future trends of the chromatographic analysis of amino acids and short peptides are briefly discussed.
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Affiliation(s)
- T Cserháti
- Research Institute of Materials and Environmental Chemistry, Chemical Research Center, Hungarian Academy of Sciences, Budapest, Hungary.
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