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Chen H, Chen Y, Zheng H, Xiang X, Xu L. A novel angiotensin-I-converting enzyme inhibitory peptide from oyster: Simulated gastro-intestinal digestion, molecular docking, inhibition kinetics and antihypertensive effects in rats. Front Nutr 2022; 9:981163. [PMID: 36082025 PMCID: PMC9445672 DOI: 10.3389/fnut.2022.981163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/29/2022] [Indexed: 11/13/2022] Open
Abstract
In this study, a novel peptide, AEYLCEAC with high angiotensin-I-converting enzyme inhibitory (ACEI) activity was screened from oyster (Crassostrea gigas) hydrolysates, which was obtained from simulated gastro-intestinal digestion. Candidate peptides were confirmed to have a higher binding to angiotensin-I-converting enzyme (ACE) than the positive drug phosphoinic tripeptide calculated by Discovery Studio, and AEYLCEAC showed the highest ACE inhibition rate in vitro with a IC50 of 4.287 mM. Lineweaver-Burk plots confirmed that the peptidic inhibitory type of ACE is competitive. The molecular docking showed that ACEI activity of the AEYLCEAC was mainly due to the hydrogen bonding interactions with the active pockets (S1 and S2) of ACE. In vivo, AEYLCEAC effectively reduced diastolic blood pressure (DBP) and Systolic blood pressure (SBP) in hypertensive rats. These results indicate that AEYLCEAC might act as a helpful ingredient in functional foods or pharmaceuticals for the prevention and treatment of hypertension.
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Affiliation(s)
- Hui Chen
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Marine Fishery Resources Exploitment and Utilization of Zhejiang Province, Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Yu Chen
- Zhejiang Marine Fisheries Research Institute, Zhoushan, China
- Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan, China
| | - Huizhen Zheng
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Marine Fishery Resources Exploitment and Utilization of Zhejiang Province, Hangzhou, China
- National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou, China
| | - Xingwei Xiang
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Marine Fishery Resources Exploitment and Utilization of Zhejiang Province, Hangzhou, China
- National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou, China
- *Correspondence: Xingwei Xiang,
| | - Lu Xu
- Department of Animal Medicine, College of Agriculture and Forestry Science, Linyi University, Linyi, China
- Lu Xu,
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Enzymatic Hydrolysis of Pulse Proteins as a Tool to Improve Techno-Functional Properties. Foods 2022; 11:foods11091307. [PMID: 35564030 PMCID: PMC9104109 DOI: 10.3390/foods11091307] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/13/2022] [Accepted: 04/16/2022] [Indexed: 02/01/2023] Open
Abstract
Pulse proteins are being increasingly investigated as nutritious and functional ingredients which could provide alternatives to animal proteins; however, pulse protein ingredients do not always meet the functionality requirements necessary for various applications. Consequently, enzymatic hydrolysis can be employed as a means of improving functional properties such as solubility, emulsifying, foaming, and gelling properties. This review aims to examine the current literature regarding modification of these properties with enzymatic hydrolysis. The effects of enzymatic hydrolysis on the functionality of pulse proteins generally varies considerably based on the enzyme, substrate, processing steps such as heat treatment, degree of hydrolysis, and pH. Differences in protease specificity as well as protein structure allow for a wide variety of peptide mixtures to be generated, with varying hydrophobic and electrostatic properties. Typically, the most significant improvements are seen when the original protein ingredient has poor initial functionality. Solubility is usually improved in the mildly acidic range, which may also correspond with improved foaming and emulsifying properties. More work should be carried out on the potential of enzymatic hydrolysis to modify gelation properties of pulse proteins, as the literature is currently lacking. Overall, careful selection of proteases and control of hydrolysis will be necessary to maximize the potential of enzymatic hydrolysis as a tool to improve pulse protein functionality and broaden the range of potential applications.
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Felix M, Cermeño M, FitzGerald RJ. Structure and in vitro bioactive properties of O/W emulsions generated with fava bean protein hydrolysates. Food Res Int 2021; 150:110780. [PMID: 34865795 DOI: 10.1016/j.foodres.2021.110780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/27/2021] [Accepted: 10/21/2021] [Indexed: 11/29/2022]
Abstract
The use of plant-derived proteins in the generation of food products is gaining popularity as an alternative to proteins of animal origin. This study described the emulsifying and bioactive properties of fava bean protein hydrolysates (FBH) generated at low and high degree of hydrolysis (DH), i.e., FBH8 (low DH: 8.4 ± 0.3) and FBH210 (high DH: 15.6 ± 0.7) when adjusted to three different pHs (3.0, 5.0 and 8.0). Overall, FBH8, had more favourable emulsifying properties compared to the FBH210. The emulsion generated with FBH8 at pH 8.0 also had the highest antioxidant activity when measured by the oxygen radical absorbance capacity (ORAC) and ferric reducing antioxidant power (FRAP) assays with values of 1108.6 ± 3.8 and 1159.9 ± 20.5 μmol Trolox Eq·g-1 emulsion, respectively. The antioxidant activity of the emulsions, in most cases, remained unchanged following in vitro simulated gastrointestinal digestion. Both the FBH8 and FBH210 emulsions following in vitro simulated gastrointestinal digestion were able to inhibit the activities of dipeptidyl peptidase-IV (DPP-IV) and angiotensin converting enzyme (ACE) with ∼45% and 65% inhibition, respectively. These results indicated that hydrolysates from fava bean may find use for the generation of bioactive emulsions.
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Affiliation(s)
- Manuel Felix
- Department of Biological Sciences, School of Natural Sciences, University of Limerick, Ireland
| | - Maria Cermeño
- Department of Biological Sciences, School of Natural Sciences, University of Limerick, Ireland
| | - Richard J FitzGerald
- Department of Biological Sciences, School of Natural Sciences, University of Limerick, Ireland.
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Lee JH, Kim HJ, Ahn DU, Paik HD. Improved immune-enhancing activity of egg white protein ovotransferrin after enzyme hydrolysis. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2021; 63:1159-1168. [PMID: 34796354 PMCID: PMC8564309 DOI: 10.5187/jast.2021.e82] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/07/2021] [Accepted: 06/02/2021] [Indexed: 12/13/2022]
Abstract
Ovotransferrin (OTF), an egg protein known as transferrin family protein, possess strong antimicrobial and antioxidant activity. This is because OTF has two iron binding sites, so it has a strong metal chelating ability. The present study aimed to evaluate the improved immune-enhancing activities of OTF hydrolysates produced using bromelain, pancreatin, and papain. The effects of OTF hydrolysates on the production and secretion of pro-inflammatory mediators in RAW 264.7 macrophages were confirmed. The production of nitric oxide (NO) was evaluated using Griess reagent and the expression of inducible nitric oxide synthase (iNOS) were evaluated using quantitative real-time polymerase chain reaction (PCR). And the production of pro-inflammatory cytokines (tumor necrosis factor [TNF]-α and interleukin [IL]-6) and the phagocytic activity of macrophages were evaluated using an ELISA assay and neutral red uptake assay, respectively. All OTF hydrolysates enhanced NO production by increasing iNOS mRNA expression. Treating RAW 264.7 macrophages with OTF hydrolysates increased the production of pro-inflammatory cytokines and the phagocytic activity. The production of NO and pro-inflammatory cytokines induced by OTF hydrolysates was inhibited by the addition of specific mitogen-activated protein kinase (MAPK) inhibitors. In conclusion, results indicated that all OTF hydrolysates activated RAW 264.7 macrophages by activating MAPK signaling pathway.
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Affiliation(s)
- Jae Hoon Lee
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea
| | - Hyeon Joong Kim
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea
| | - Dong Uk Ahn
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Hyun-Dong Paik
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea
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Multifunctional hydrolysates from kenaf (Hibiscus cannabinus L.) seed protein with high antihypertensive activity in vitro and in vivo. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-020-00663-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Tacias-Pascacio VG, Morellon-Sterling R, Siar EH, Tavano O, Berenguer-Murcia Á, Fernandez-Lafuente R. Use of Alcalase in the production of bioactive peptides: A review. Int J Biol Macromol 2020; 165:2143-2196. [PMID: 33091472 DOI: 10.1016/j.ijbiomac.2020.10.060] [Citation(s) in RCA: 127] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/05/2020] [Accepted: 10/08/2020] [Indexed: 12/11/2022]
Abstract
This review aims to cover the uses of the commercially available protease Alcalase in the production of biologically active peptides since 2010. Immobilization of Alcalase has also been reviewed, as immobilization of the enzyme may improve the final reaction design enabling the use of more drastic conditions and the reuse of the biocatalyst. That way, this review presents the production, via Alcalase hydrolysis of different proteins, of peptides with antioxidant, angiotensin I-converting enzyme inhibitory, metal binding, antidiabetic, anti-inflammatory and antimicrobial activities (among other bioactivities) and peptides that improve the functional, sensory and nutritional properties of foods. Alcalase has proved to be among the most efficient proteases for this goal, using different protein sources, being especially interesting the use of the protein residues from food industry as feedstock, as this also solves nature pollution problems. Very interestingly, the bioactivities of the protein hydrolysates further improved when Alcalase is used in a combined way with other proteases both in a sequential way or in a simultaneous hydrolysis (something that could be related to the concept of combi-enzymes), as the combination of proteases with different selectivities and specificities enable the production of a larger amount of peptides and of a smaller size.
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Affiliation(s)
- Veymar G Tacias-Pascacio
- Facultad de Ciencias de la Nutrición y Alimentos, Universidad de Ciencias y Artes de Chiapas, Lib. Norte Pte. 1150, 29039 Tuxtla Gutiérrez, Chiapas, Mexico; Tecnológico Nacional de México/Instituto Tecnológico de Tuxtla Gutiérrez, Carretera Panamericana Km. 1080, 29050 Tuxtla Gutiérrez, Chiapas, Mexico.
| | | | - El-Hocine Siar
- Departamento de Biocatálisis, ICP-CSIC, Campus UAM-CSIC, Madrid, Spain; Equipe TEPA, Laboratoire LNTA, INATAA, Université des Frères Mentouri Constantine 1, Constantine 25000, Algeria
| | - Olga Tavano
- Faculty of Nutrition, Alfenas Federal Univ., 700 Gabriel Monteiro da Silva St, Alfenas, MG 37130-000, Brazil
| | - Ángel Berenguer-Murcia
- Departamento de Química Inorgánica e Instituto Universitario de Materiales, Universidad de Alicante, Alicante, Spain
| | - Roberto Fernandez-Lafuente
- Departamento de Biocatálisis, ICP-CSIC, Campus UAM-CSIC, Madrid, Spain; Center of Excellence in Bionanoscience Research, Member of the External Scientific Advisory Board, King Abdulaziz University, Jeddah, Saudi Arabia.
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Malomo S, Nwachukwu I, Girgih A, Idowu A, Aluko R, Fagbemi T. Antioxidant and Renin-Angiotensin System Inhibitory Properties of Cashew Nut and Fluted-Pumpkin Protein Hydrolysates. POL J FOOD NUTR SCI 2020. [DOI: 10.31883/pjfns/122460] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Kim HS, Lee JH, Moon SH, Ahn DU, Paik HD. Ovalbumin Hydrolysates Inhibit Nitric Oxide Production in LPS-induced RAW 264.7 Macrophages. Food Sci Anim Resour 2020; 40:274-285. [PMID: 32161922 PMCID: PMC7057040 DOI: 10.5851/kosfa.2020.e12] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/04/2020] [Accepted: 02/04/2020] [Indexed: 12/23/2022] Open
Abstract
In this study, ovalbumin (OVA) hydrolysates were prepared using various
proteolytic enzymes and the anti-inflammatory activities of the hydrolysates
were determined. Also, the potential application of OVA as a functional food
material was discussed. The effect of OVA hydrolysates on the inhibition of
nitric oxide (NO) production was evaluated via the Griess reaction, and their
effects on the expression of inducible NO synthase (inducible nitric oxide
synthase, iNOS) were assessed using the quantitative real-time PCR and Western
blotting. To determine the mechanism by which OVA hydrolysates activate
macrophages, pathways associated with the mitogen-activated protein kinase
(MAPK) signaling were evaluated. When the OVA hydrolysates were added to RAW
264.7 cells without lipopolysaccharide (LPS) stimulation, they did not affect
the production of NO. However, both the OVA-Protex 6L hydrolysate (OHPT) and
OVA-trypsin hydrolysate (OHT) inhibited NO production dose-dependently in LPS-
stimulated RAW 264.7 cells. Especially, OHT showed a strong NO-inhibitory
activity (62.35% at 2 mg/mL) and suppressed iNOS production and the mRNA
expression for iNOS (p<0.05). Also, OHT treatment decreased the
phosphorylation levels of Jun amino-terminal kinases (JNK) and extracellular
signal-regulated kinases (ERK) in the MAPK signaling pathway. These findings
suggested that OVA hydrolysates could be used as an anti-inflammatory agent that
prevent the overproduction of NO.
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Affiliation(s)
- Hyun Suk Kim
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea
| | - Jae Hoon Lee
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea
| | - Sun Hee Moon
- Department of Environmental and Occupational Health, University of Arkansas for Medical Science, Little Rock, Arkansas 72205, USA
| | - Dong Uk Ahn
- Department of Animal Science, Iowa State University, Ames, Iowa 50011, USA
| | - Hyun-Dong Paik
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea
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High-Intensity Ultrasound Pulses Effect on Physicochemical and Antioxidant Properties of Tilapia (Oreochromis niloticus) Skin Gelatin. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10031004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Ultrasonic pulses are considered green technology for the improvement of the functional properties of proteins. In this study, four high-intensity ultrasound pulse treatments (ultrasound-pulsed gelatin (UPG)-42, UPG-52, UPG-71, UPG-84, and non-pulsed control gelatin (CG)) were applied to tilapia (Oreochromis niloticus) skin gelatin in order to study their effect on its physicochemical and antioxidant properties; a non-treated gelatin was used as a control. UPGs showed a significant increase in soluble protein and surface hydrophobicity compared to the control gelatin, and no significant difference was found in the electrophoretic profiles. The effects on the secondary structure were studied by circular dichroism and infrared spectra, and these showed that the random coil conformation was the main component in all treatments and the ultrasonic treatments only affected the α-helix and β-sheet proportion. Finally, the ABTS ((2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid)) and FRAP (ferric reducing ability) assays demonstrated that ultrasound treatments could improve the antioxidant activity of gelatins as free radical scavengers and electron donors. These results suggest that high-intensity ultrasound pulse technology is useful to improve fish gelatin antioxidant properties, which could be associated with secondary structure disruption.
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