1
|
Gouseti O, Larsen ME, Amin A, Bakalis S, Petersen IL, Lametsch R, Jensen PE. Applications of Enzyme Technology to Enhance Transition to Plant Proteins: A Review. Foods 2023; 12:2518. [PMID: 37444256 DOI: 10.3390/foods12132518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023] Open
Abstract
As the plant-based food market grows, demand for plant protein is also increasing. Proteins are a major component in foods and are key to developing desired structures and textures. Seed storage proteins are the main plant proteins in the human diet. They are abundant in, for example, legumes or defatted oilseeds, which makes them an excellent candidate to use in the development of novel plant-based foods. However, they often have low and inflexible functionalities, as in nature they are designed to remain densely packed and inert within cell walls until they are needed during germination. Enzymes are often used by the food industry, for example, in the production of cheese or beer, to modify ingredient properties. Although they currently have limited applications in plant proteins, interest in the area is exponentially increasing. The present review first considers the current state and potential of enzyme utilization related to plant proteins, including uses in protein extraction and post-extraction modifications. Then, relevant opportunities and challenges are critically discussed. The main challenges relate to the knowledge gap, the high cost of enzymes, and the complexity of plant proteins as substrates. The overall aim of this review is to increase awareness, highlight challenges, and explore ways to address them.
Collapse
Affiliation(s)
- Ourania Gouseti
- Department of Food Science, University of Copenhagen, 1958 Copenhagen, Denmark
| | - Mads Emil Larsen
- Department of Food Science, University of Copenhagen, 1958 Copenhagen, Denmark
| | - Ashwitha Amin
- Department of Food Science, University of Copenhagen, 1958 Copenhagen, Denmark
| | - Serafim Bakalis
- Department of Food Science, University of Copenhagen, 1958 Copenhagen, Denmark
| | - Iben Lykke Petersen
- Department of Food Science, University of Copenhagen, 1958 Copenhagen, Denmark
| | - Rene Lametsch
- Department of Food Science, University of Copenhagen, 1958 Copenhagen, Denmark
| | - Poul Erik Jensen
- Department of Food Science, University of Copenhagen, 1958 Copenhagen, Denmark
| |
Collapse
|
2
|
Mitra B, Kristensen L, Lametsch R, Ruiz-Carrascal J. Cooking affects pork proteins in vitro rate of digestion due to different structural and chemical modifications. Meat Sci 2022; 192:108924. [PMID: 35878433 DOI: 10.1016/j.meatsci.2022.108924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/13/2022] [Accepted: 07/19/2022] [Indexed: 10/17/2022]
Abstract
The effect of thermal processing on the in vitro digestibility of pork proteins was studied. Raw samples were considered the control group, while the thermal treatments included 58, 80, 98 and 160 °C for 72 min, 118 °C for 8 min and 58 °C for 17 h, resembling a range of different cooking procedures. Samples were subsequently subjected to pepsin digestion at pH 3.00 in the gastric phase followed by trypsin and α-chymotrypsin at pH 8.00 in the intestinal phase. Pork cooked at 58 °C for 72 min had a significantly higher pepsin digestibility rate than meat cooked at 80 °C or 160 °C. The trend was similar in the intestinal phase, with samples cooked at 58 °C for 72 min having enhanced digestion rate over other treatments after 120 min of digestion. A PLS model pointed out to an inverse relationship between in vitro proteolysis rate and variables like Maillard reaction compounds or protein structural changes.
Collapse
Affiliation(s)
- Bhaskar Mitra
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark
| | - Lars Kristensen
- Danish Meat Research Institute, Gregersensvej 9, 2630 Taastrup, Denmark
| | - Rene Lametsch
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark
| | - Jorge Ruiz-Carrascal
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark; Institute of Meat and Meat Products, University of Extremadura, Av. Ciencias s/n, 10003 Caceres, Spain.
| |
Collapse
|
3
|
Shi J, Zhao XH, Fu Y, Lametsch R. Transglutaminase-Mediated Caseinate Oligochitosan Glycation Enhances the Effect of Caseinate Hydrolysate to Ameliorate the LPS-Induced Damage on the Intestinal Barrier Function in IEC-6 Cells. J Agric Food Chem 2021; 69:8787-8796. [PMID: 34323484 DOI: 10.1021/acs.jafc.1c02858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Some food components can regulate the intestinal barrier function. Herein, the effect of transglutaminase-type oligochitosan glycation on caseinate hydrolysate for its ability to maintain intestinal epithelial integrity and the tight junction (TJ) structure was investigated by assessing and comparing the bioactivities of glycated caseinate hydrolysate and caseinate hydrolysate against the lipopolysaccharide-induced barrier damage in the model cells (rat intestinal epithelial IEC-6 cells). The results from liquid chromatography with tandem mass spectrometry (LC-MS/MS) analysis demonstrated that oligochitosan glycation occurred at the Gln residues of α-S1-casein and α-S2-casein. The two hydrolysates retarded the lipopolysaccharide cytotoxicity toward IEC-6 cells and enhanced the barrier integrity by increasing the transepithelial electrical resistance or decreasing the paracellular permeability. In addition, these two hydrolysates could upregulate both mRNA and protein expression of three TJ proteins in IEC-6 cells. More importantly, the glycated caseinate hydrolysate had higher potential than caseinate hydrolysate to protect IEC-6 cells against the lipopolysaccharide-induced barrier damage, suggesting that the transglutaminase-mediated oligochitosan glycation of proteins is a useful approach to enforce protein biofunctions in the intestine.
Collapse
Affiliation(s)
- Jia Shi
- School of Biological and Food Engineering, Guangdong University of Petrochemical Technology, 525000 Maoming, P. R. China
- College of Food Science, Northeast Agricultural University, 150030 Harbin, P. R. China
| | - Xin-Huai Zhao
- School of Biological and Food Engineering, Guangdong University of Petrochemical Technology, 525000 Maoming, P. R. China
- College of Food Science, Northeast Agricultural University, 150030 Harbin, P. R. China
| | - Yu Fu
- College of Food Science, Southwest University, 400715 Chongqing, P. R. China
| | - Rene Lametsch
- Department of Food Science, University of Copenhagen, 1958 Frederiksberg C, Denmark
| |
Collapse
|
4
|
Araya-Morice A, De Gobba C, Lametsch R, Ruiz-Carrascal J. Effect of the addition of cheese powder and salt content on sensory profile, physicochemical properties and γ-glutamyl kokumi peptides content in dry fermented sausages. Eur Food Res Technol 2021. [DOI: 10.1007/s00217-021-03769-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
5
|
Shi J, Fu Y, Zhao XH, Lametsch R. Glycation sites and bioactivity of lactose-glycated caseinate hydrolysate in lipopolysaccharide-injured IEC-6 cells. J Dairy Sci 2020; 104:1351-1363. [PMID: 33309364 DOI: 10.3168/jds.2020-19018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 09/25/2020] [Indexed: 01/13/2023]
Abstract
During the thermal processing of milk, Maillard reactions occur between proteins and lactose to generate glycated proteins. In this study, a lactose-glycated caseinate was hydrolyzed by trypsin. The obtained glycated caseinate (GCN) hydrolysate had a lactose content of 10.8 g/kg of protein. We identified its glycation sites and then assessed it for its protective effect against lipopolysaccharide-induced barrier injury using a rat intestinal epithelial cell line (IEC-6 cells) as a cell model and unglycated caseinate (CN) hydrolysate as a reference. Results from our liquid chromatography-mass spectrometry analysis of the GCN hydrolysate verified that lactose glycation occurred at the Lys residues in 3 casein components (αS1-casein, β-casein, and κ-casein), and this resulted in the formation of 5 peptides with the following amino acid sequences: EMPFPKYPKYPVEPF, HIQKEDVPSE, GSENSEKTTMPL, NQDKTEIPT, and EGIHAQQKEPM. The results from cell experiments showed that the 2 hydrolysates could promote cell growth and decrease lactate dehydrogenase release in the lipopolysaccharide-injured cells; more importantly, they could partially protect the damaged barrier function of the cells by increasing trans-epithelial electrical resistance, decreasing epithelial permeability, and upregulating the expression of the 3 tight junction proteins zonula occludens-1, occludin, and claudin-1. However, compared with CN hydrolysate, GCN hydrolysate showed lower efficacy in protecting against cellular barrier dysfunction. We propose that the different chemical characteristics of the CN hydrolysate and the GCN hydrolysate (i.e., amino acid loss and lactose conjugation) contributed to the lower barrier-protective efficacy of the GCN hydrolysate. During dairy processing, protein glycation of the Maillard type might have a non-negligible, unfavorable effect on dairy proteins, in view of the resulting protein glycation we found and the critical function of proteins for maintaining the integrity of the intestinal barrier.
Collapse
Affiliation(s)
- J Shi
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, 150030 Harbin, China
| | - Y Fu
- College of Food Science, Southwest University, 400715 Chongqing, China
| | - X H Zhao
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, 150030 Harbin, China; School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, 525000 Maoming, PR China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong University of Petrochemical Technology, 525000 Maoming, PR China.
| | - R Lametsch
- Department of Food Science, University of Copenhagen, 1958 Frederiksberg C, Denmark.
| |
Collapse
|
6
|
Magnowska Z, Jana B, Brochmann RP, Hesketh A, Lametsch R, De Gobba C, Guardabassi L. Carprofen-induced depletion of proton motive force reverses TetK-mediated doxycycline resistance in methicillin-resistant Staphylococcus pseudintermedius. Sci Rep 2019; 9:17834. [PMID: 31780689 PMCID: PMC6882848 DOI: 10.1038/s41598-019-54091-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 10/31/2019] [Indexed: 11/09/2022] Open
Abstract
We previously showed that doxycycline (DOX) and carprofen (CPF), a veterinary non-steroidal anti-inflammatory drug, have synergistic antimicrobial activity against methicillin-resistant Staphylococcus pseudintermedius (MRSP) carrying the tetracycline resistance determinant TetK. To elucidate the molecular mechanism of this synergy, we investigated the effects of the two drugs, individually and in combination, using a comprehensive approach including RNA sequencing, two-dimensional differential in-gel electrophoresis, macromolecule biosynthesis assays and fluorescence spectroscopy. Exposure of TetK-positive MRSP to CPF alone resulted in upregulation of pathways that generate ATP and NADH, and promote the proton gradient. We showed that CPF is a proton carrier that dissipates the electrochemical potential of the membrane. In the presence of both CPF and DOX, the energy compensation strategy was attenuated by downregulation of all the processes involved, such as citric acid cycle, oxidative phosphorylation and ATP-providing arginine deiminase pathway. Furthermore, protein biosynthesis inhibition increased from 20% under DOX exposure alone to 75% upon simultaneous exposure to CPF. We conclude that synergistic interaction of the drugs restores DOX susceptibility in MRSP by compromising proton-motive-force-dependent TetK-mediated efflux of the antibiotic. MRSP is unable to counterbalance CPF-mediated PMF depletion by cellular metabolic adaptations, resulting in intracellular accumulation of DOX and inhibition of protein biosynthesis.
Collapse
Affiliation(s)
- Zofia Magnowska
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark.
| | - Bimal Jana
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Rikke Prejh Brochmann
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Andrew Hesketh
- Department of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge, Cambridge, United Kingdom.,School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, United Kingdom
| | - Rene Lametsch
- Department of Food Science, Faculty of Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Cristian De Gobba
- Department of Food Science, Faculty of Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Luca Guardabassi
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark. .,Department of Pathobiology and Population Sciences, The Royal Veterinary College, Hatfield, United Kingdom.
| |
Collapse
|
7
|
Alves DR, Nzakizwanayo J, Dedi C, Olympiou C, Hanin A, Kot W, Hansen L, Lametsch R, Gahan CGM, Schellenberger P, Ogilvie LA, Jones BV. Genomic and Ecogenomic Characterization of Proteus mirabilis Bacteriophages. Front Microbiol 2019; 10:1783. [PMID: 31447809 PMCID: PMC6691071 DOI: 10.3389/fmicb.2019.01783] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 07/18/2019] [Indexed: 01/21/2023] Open
Abstract
Proteus mirabilis often complicates the care of catheterized patients through the formation of crystalline biofilms which block urine flow. Bacteriophage therapy has been highlighted as a promising approach to control this problem, but relatively few phages infecting P. mirabilis have been characterized. Here we characterize five phages capable of infecting P. mirabilis, including those shown to reduce biofilm formation, and provide insights regarding the wider ecological and evolutionary relationships of these phages. Transmission electron microscopy (TEM) imaging of phages vB_PmiP_RS1pmA, vB_PmiP_RS1pmB, vB_PmiP_RS3pmA, and vB_PmiP_RS8pmA showed that all share morphologies characteristic of the Podoviridae family. The genome sequences of vB_PmiP_RS1pmA, vB_PmiP_RS1pmB, and vB_PmiP_RS3pmA showed these are species of the same phage differing only by point mutations, and are closely related to vB_PmiP_RS8pmA. Podophages characterized in this study were also found to share similarity in genome architecture and composition to other previously described P. mirabilis podophages (PM16 and PM75). In contrast, vB_PimP_RS51pmB showed morphology characteristic of the Myoviridae family, with no notable similarity to other phage genomes examined. Ecogenomic profiling of all phages revealed no association with human urinary tract viromes, but sequences similar to vB_PimP_RS51pmB were found within human gut, and human oral microbiomes. Investigation of wider host-phage evolutionary relationships through tetranucleotide profiling of phage genomes and bacterial chromosomes, indicated vB_PimP_RS51pmB has a relatively recent association with Morganella morganii and other non-Proteus members of the Morganellaceae family. Subsequent host range assays confirmed vB_PimP_RS51pmB can infect M. morganii.
Collapse
Affiliation(s)
- Diana R. Alves
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, United Kingdom
- Blond McIndoe Research Foundation, Queen Victoria Hospital, East Grinstead, United Kingdom
- Queen Victoria Hospital NHS Foundation Trust, East Grinstead, United Kingdom
| | - Jonathan Nzakizwanayo
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, United Kingdom
- Department of Biology and Biochemistry, University of Bath, Bath, United Kingdom
| | - Cinzia Dedi
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, United Kingdom
| | - Chara Olympiou
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, United Kingdom
- School of Pharmacy, Queen’s University, Belfast, United Kingdom
| | - Aurélie Hanin
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Witold Kot
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lars Hansen
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Rene Lametsch
- Department of Food Science, University of Copenhagen, Copenhagen, Denmark
| | - Cormac G. M. Gahan
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- School of Pharmacy, University College Cork, Cork, Ireland
| | | | - Lesley A. Ogilvie
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, United Kingdom
| | - Brian V. Jones
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, United Kingdom
- Queen Victoria Hospital NHS Foundation Trust, East Grinstead, United Kingdom
- Department of Biology and Biochemistry, University of Bath, Bath, United Kingdom
| |
Collapse
|
8
|
Chhem‐Kieth S, Lametsch R, Hansen ET, Ruiz‐Carrascal J. Storage and thermal stability of novel heme‐based pigments prepared from porcine hemoglobin. J FOOD PROCESS ENG 2019. [DOI: 10.1111/jfpe.12994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Sorivan Chhem‐Kieth
- Danish Crown Ingredients Copenhagen Denmark
- Department of Food ScienceUniversity of Copenhagen Frederiksberg C Denmark
| | - Rene Lametsch
- Department of Food ScienceUniversity of Copenhagen Frederiksberg C Denmark
| | | | | |
Collapse
|
9
|
Mitra B, Lametsch R, Greco I, Ruiz-Carrascal J. Advanced glycation end products, protein crosslinks and post translational modifications in pork subjected to different heat treatments. Meat Sci 2018; 145:415-424. [DOI: 10.1016/j.meatsci.2018.07.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 06/15/2018] [Accepted: 07/19/2018] [Indexed: 11/16/2022]
|
10
|
Chhem-Kieth S, Skou PB, Lametsch R, Hansen ET, Ruiz-Carrascal J. Investigation of nitrite alternatives for the color stabilization of heme-iron hydrolysates. J Food Sci Technol 2018; 55:4287-4296. [PMID: 30228427 PMCID: PMC6133850 DOI: 10.1007/s13197-018-3371-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 07/26/2018] [Accepted: 07/31/2018] [Indexed: 06/08/2023]
Abstract
This study investigates the potential of novel heme-ligand complexes, derived from heme-iron isolated from porcine hemoglobin by enzymatic hydrolysis, to use as pigments for meat products. Five alternatives to sodium nitrite were identified as possible heme ligands and stabilizing agents of the red conformation of heme. The effects of 4-methylimidazole, methyl nicotinate, pyrrolidine, piperidine, pyrazine and sodium nitrite (as comparative benchmark) on the color of heme-iron extract and pure hemin standard were studied in solution. The ligand affinity and heme-ligand stability was assessed over time in solution by UV-Vis absorbance spectroscopy and CIELAB color space parameters. The CIE redness score a* was used as a single measurement to propose a predictive model based on the following parameters: heme source (heme-iron extract or hemin standard), heme-to-ligand molar ratio (1:20 to 1:300), and storage time (up to 32 days). The optimal concentration at which each ligand can be added to either heme source, as well as the stability of the red color of the formed heme-ligand complexes in-solution was determined. Heme-iron extract-derived samples showed increased redness and color stability as compared to their hemin counterparts. No ligand showed as much affinity for heme as sodium nitrite. As the most promising ligand candidates, methyl nicotinate and 4-methylimidazole started to show color changes at a 1:50 molar ratio, but higher amounts (1:100 and 1:300, respectively) were required to attain the maximum redness possible with the highest stability.
Collapse
Affiliation(s)
- Sorivan Chhem-Kieth
- Danish Crown Ingredients, Flaesketorvet 41, 1711 Copenhagen V, Denmark
- Department of Food Science, University of Copenhagen, Rolighedsvej 30, 1958 Frederiksberg C, Denmark
| | - Peter Bæk Skou
- Department of Food Science, University of Copenhagen, Rolighedsvej 30, 1958 Frederiksberg C, Denmark
| | - Rene Lametsch
- Department of Food Science, University of Copenhagen, Rolighedsvej 30, 1958 Frederiksberg C, Denmark
| | | | - Jorge Ruiz-Carrascal
- Department of Food Science, University of Copenhagen, Rolighedsvej 30, 1958 Frederiksberg C, Denmark
| |
Collapse
|
11
|
Koutina G, Ray CA, Lametsch R, Ipsen R. The effect of protein-to-alginate ratio on in vitro gastric digestion of nanoparticulated whey protein. Int Dairy J 2018. [DOI: 10.1016/j.idairyj.2017.09.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
12
|
Li CB, Li J, Zhou GH, Lametsch R, Ertbjerg P, Brüggemann DA, Huang HG, Karlsson AH, Hviid M, Lundström K. Electrical stimulation affects metabolic enzyme phosphorylation, protease activation, and meat tenderization in beef. J Anim Sci 2011; 90:1638-49. [PMID: 22147478 DOI: 10.2527/jas.2011-4514] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The objective of this study was to investigate the response of sarcoplasmic proteins in bovine LM to low-voltage electrical stimulation (ES; 80 V, 35 s) after dressing and its contribution to meat tenderization at an early postmortem time. Proteome analysis showed that ES resulted in decreased (P < 0.05) phosphorylation of creatine kinase M chain, fructose bisphosphate aldolase C-A, β-enolase, and pyruvate kinase at 3 h postmortem. Zymography indicated an earlier (P < 0.05) activation of μ-calpain in ES muscles. Free lysosomal cathepsin B and L activity increased faster (P < 0.05) in ES muscles up to 24 h. Immunohistochemistry and transmission electron microscopy further indicated that lysosomal enzymes were released at an early postmortem time. Electrical stimulation also induced ultrastructural disruption of sarcomeres. In addition, ES accelerated (P < 0.05) the depletion of ATP, creatine phosphate, and glycogen, as well as a pH decline and the more preferred pH/temperature decline mode. Finally, ES accelerated meat tenderization, resulting in lesser (P < 0.05) shear force values than the control over the testing time. A possible relationship was suggested between a change in the phosphorylation of energy metabolic enzymes and the postmortem tenderization of beef. Our results suggested the possible importance of the activation of μ-calpain, phosphorylation of sarcoplasmic proteins, and release of lysosomal enzymes for ES-induced tenderization of beef muscle.
Collapse
Affiliation(s)
- C B Li
- Department of Food Science, Swedish University of Agricultural Sciences, Uppsala, Sweden.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Gandolfi G, Pomponio L, Ertbjerg P, Karlsson A, Nanni Costa L, Lametsch R, Russo V, Davoli R. Investigation on CAST, CAPN1 and CAPN3 porcine gene polymorphisms and expression in relation to post-mortem calpain activity in muscle and meat quality. Meat Sci 2011; 88:694-700. [DOI: 10.1016/j.meatsci.2011.02.031] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Revised: 02/22/2011] [Accepted: 02/28/2011] [Indexed: 11/28/2022]
|
14
|
Sørensen LM, Lametsch R, Andersen MR, Nielsen PV, Frisvad JC. Proteome analysis of Aspergillus niger: lactate added in starch-containing medium can increase production of the mycotoxin fumonisin B2 by modifying acetyl-CoA metabolism. BMC Microbiol 2009; 9:255. [PMID: 20003296 PMCID: PMC2807875 DOI: 10.1186/1471-2180-9-255] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2009] [Accepted: 12/10/2009] [Indexed: 12/01/2022] Open
Abstract
Background Aspergillus niger is a filamentous fungus found in the environment, on foods and feeds and is used as host for production of organic acids, enzymes and proteins. The mycotoxin fumonisin B2 was recently found to be produced by A. niger and hence very little is known about production and regulation of this metabolite. Proteome analysis was used with the purpose to reveal how fumonisin B2 production by A. niger is influenced by starch and lactate in the medium. Results Fumonisin B2 production by A. niger was significantly increased when lactate and starch were combined in the medium. Production of a few other A. niger secondary metabolites was affected similarly by lactate and starch (fumonisin B4, orlandin, desmethylkotanin and pyranonigrin A), while production of others was not (ochratoxin A, ochratoxin alpha, malformin A, malformin C, kotanin, aurasperone B and tensidol B). The proteome of A. niger was clearly different during growth on media containing 3% starch, 3% starch + 3% lactate or 3% lactate. The identity of 59 spots was obtained, mainly those showing higher or lower expression levels on medium with starch and lactate. Many of them were enzymes in primary metabolism and other processes that affect the intracellular level of acetyl-CoA or NADPH. This included enzymes in the pentose phosphate pathway, pyruvate metabolism, the tricarboxylic acid cycle, ammonium assimilation, fatty acid biosynthesis and oxidative stress protection. Conclusions Lactate added in a medium containing nitrate and starch can increase fumonisin B2 production by A. niger as well as production of some other secondary metabolites. Changes in the balance of intracellular metabolites towards a higher level of carbon passing through acetyl-CoA and a high capacity to regenerate NADPH during growth on medium with starch and lactate were found to be the likely cause of this effect. The results lead to the hypothesis that fumonisin production by A. niger is regulated by acetyl-CoA.
Collapse
Affiliation(s)
- Louise M Sørensen
- Department of Systems Biology, Søltofts Plads, Technical University of Denmark, DK-2800 Kgs Lyngby, Denmark.
| | | | | | | | | |
Collapse
|
15
|
Gratacós-Cubarsí M, Castellari M, Hortós M, García-Regueiro JA, Lametsch R, Jessen F. Effects of tetracycline administration on the proteomic profile of pig muscle samples (L. dorsi). J Agric Food Chem 2008; 56:9312-9316. [PMID: 18778074 DOI: 10.1021/jf801390z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Effect of tetracycline (TC) administration on the proteomic profile of pig muscle was evaluated by 2D electrophoresis and MALDI-TOF mass spectrometry. The TC content at slaughter was determined in L. dorsi samples by HPLC-DAD. Mean residual concentration of TC in the muscle of treated animals, calculated as the sum of TC and epi-TC was 126.3 microg/kg, indicating a rapid elimination of TC in this tissue. Several differential spots (n = 54, p < 0.05) were observed in protein profiles from control and treated animals. MALDI-TOF identification gave a positive match for 5 differential spots, that is, glycerol-3-phosphate dehydrogenase 1 (G3PD1), phosphoglycerate kinase 1, novelprotein (0610037L13Rik), leucine aminopeptidase 3 (LAP), and hypothetical protein isoform 2. Results show that proteomics could be a useful tool to reveal pharmacological treatments with TC, even if the possible uses of differential spots as biomarkers to detect illegal administration of TC require further studies. Different spot patterns as a consequence of TC treatments seem to be another interesting issue for the consequences on tissue metabolism and meat quality.
Collapse
Affiliation(s)
- M Gratacós-Cubarsí
- Food Chemistry Unit, IRTA-Monells, Finca Camps i Armet s/n, Monells, Girona, Spain.
| | | | | | | | | | | |
Collapse
|
16
|
Gratacós-Cubarsí M, Lametsch R. Determination of changes in protein conformation caused by pH and temperature. Meat Sci 2008; 80:545-9. [DOI: 10.1016/j.meatsci.2007.11.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2007] [Revised: 11/19/2007] [Accepted: 11/19/2007] [Indexed: 11/17/2022]
|
17
|
Lametsch R, Knudsen J, Ertbjerg P, Oksbjerg N, Therkildsen M. Novel method for determination of myofibril fragmentation post-mortem. Meat Sci 2007; 75:719-24. [DOI: 10.1016/j.meatsci.2006.10.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2006] [Revised: 09/29/2006] [Accepted: 10/07/2006] [Indexed: 10/23/2022]
|
18
|
Lametsch R, Kristensen L, Larsen MR, Therkildsen M, Oksbjerg N, Ertbjerg P. Changes in the muscle proteome after compensatory growth in pigs. J Anim Sci 2006; 84:918-24. [PMID: 16543570 DOI: 10.2527/2006.844918x] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Sixteen female pigs (Duroc x Landrace x Large White) were divided into 2 groups, which had either free access to the diet (control group) or were feed-restricted from d 28 to 80 and then had free access to the diet (compensatory growth group). The sensory analysis showed that the pigs exhibiting compensatory growth produced meat with increased tenderness compared with control pigs (P < 0.05). To gain further knowledge of the influence of compensatory growth on meat tenderness, the sarcoplasmic protein fraction of muscle tissue was studied at the time of slaughter and 48 h postmortem using proteome analysis. At slaughter, 7 different proteins were found to be affected by compensatory growth: HSC70, HSP27, enolase 3, glycerol-3-phosphate dehydrogenase, aldehyde dehydrogenase E2, aldehyde dehydrogenase E3, and biphosphoglycerate mutase. The HSC70 and HSP27 both belong to the heat shock family and are known to play a role during muscle development. Hence, they may be affected by compensatory growth and increased protein turnover. Forty-eight hours after slaughter, 8 different proteins were found to be affected by compensatory growth: myosin light chain (MLC) II, MLC III, sulfite oxidase, chloride intracellular channel 1, 14-3-3 protein gamma, elongin B, and phosphohistidine phosphatase 14. The changes observed on MLC II and MLC III could be a consequence of enzymatic cleavage in the neck region of the globular myosin head domain that causes the release of MLC II and MLC III from the actomyosin complex. It has previously been hypothesized that compensatory growth results in an increased postmortem proteolysis; thus it was presumed that the intensity of some protein fragments would be affected by compensatory growth. However, the peptides that were found to be affected at 48 h postmortem were all full-length proteins. The 14-3-3 protein gamma has been proposed to play a role in the contraction of muscle during rigor and may thereby have an effect on meat tenderness. This study reveals some very interesting changes in the muscle proteome affected by compensatory growth, which may be useful in understanding the relationship among compensatory growth, protein turnover, and meat tenderness.
Collapse
Affiliation(s)
- R Lametsch
- Department of Food Science, Royal Veterinary and Agricultural University, Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark.
| | | | | | | | | | | |
Collapse
|
19
|
Lametsch R, Roepstorff P, Møller H, Bendixen E. Identification of myofibrillar substrates for μ-calpain. Meat Sci 2004; 68:515-21. [DOI: 10.1016/j.meatsci.2004.03.018] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2003] [Revised: 03/22/2004] [Accepted: 03/25/2004] [Indexed: 11/15/2022]
|
20
|
Lametsch R, Bendixen E. Proteome analysis applied to meat science: characterizing postmortem changes in porcine muscle. J Agric Food Chem 2001; 49:4531-4537. [PMID: 11599984 DOI: 10.1021/jf010103g] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The aim of this work was to test the application of two-dimensional electrophoresis (2DE)-based proteome analysis in studying muscle tissues and meat of pork, and to use this technology to characterize as many of the changes that occur in pig muscle proteins during post mortem storage of the carcass as possible. For this purpose, 2DE proved to be a powerful tool, as it is far more sensitive and shows a higher resolving power than conventional SDS-PAGE, allowing for the precise and semiquantitative recognition of approximately 1000 individual muscle proteins in every 2DE display. In this study, we have chosen to analyze the subset of muscle proteins that have molecular masses of 5-200 kDa, and can be reproducibly separated in the pH span of 4-9. By comparing 2DE patterns of muscle samples taken immediately after slaughter (time 0), as well as those taken 4, 8, 24, and 48 h post mortem, we have estimated the relative changes of individual muscle proteins during the post mortem storage of the carcass. In this paper, of these changes we report the 15 most notable.
Collapse
Affiliation(s)
- R Lametsch
- Department of Animal Product Quality, Danish Institute of Agricultural Sciences, P.O. Box 50, DK-8830 Tjele, Denmark
| | | |
Collapse
|
21
|
Lametsch R, Rasmussen JT, Johnsen LB, Purup S, Sejrsen K, Petersen TE, Heegaard CW. Structural characterization of the fibroblast growth factor-binding protein purified from bovine prepartum mammary gland secretion. J Biol Chem 2000; 275:19469-74. [PMID: 10867016 DOI: 10.1074/jbc.m002550200] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A novel heparin-binding protein was purified to homogeneity from bovine prepartum mammary gland secretion using heparin-Sepharose chromatography and reverse-phase high performance liquid chromatography successively. Structural information obtained by N-terminal amino acid sequencing of a series of proteolytically generated peptides permitted the cloning of the corresponding cDNA. The isolated cDNA was 1170 base pairs long and consisted of an 83-base pair 5'-untranslated region followed by a 702-base pair coding region and a 385-base pair 3'-untranslated region. The open reading frame resulted in a protein comprising 234- amino acid residues, including a signal sequence. Instead of Lys(24) as the predicted N terminus, Edman degradation of the native protein revealed N-terminal processing at two sites as follows: a primary site between Arg(31)-Gly(32) and a secondary site between Arg(51)-Ser(52). The amino acid sequence showed a significant similarity with that of human (60%) and mouse (53%) fibroblast growth factor-binding protein (FGF-BP). Accordingly, ligand blotting experiments revealed that bovine FGF-BP bound FGF-2. The theoretical mass of the protein predicted from the cDNA sequence is 22.5 kDa. However, the molecular mass of the purified protein was estimated to 28.6 kDa by mass spectrometry and 36 kDa by electrophoresis. The apparent molecular weight differences are most likely due to post-transcriptional modifications, shown to involve N- and O-glycosylation of Asn(155) and Ser(172), respectively. All 10 cysteine residues in the protein participated in disulfide bonds, and the pattern was identified as Cys(71)-Cys(88), Cys(97)-Cys(130), Cys(106)-Cys(142), Cys(198)-Cys(234), and Cys(214)-Cys(222). As the 10 cysteines of the three known FGF-BPs are positionally conserved, the disulfide bond pattern of bovine FGF-BP may be regarded as representative for the FGF-BP family.
Collapse
Affiliation(s)
- R Lametsch
- Protein Chemistry Laboratory, Department of Molecular and Structural Biology, University of Aarhus, Science Park, Gustav Wieds Vej 10, DK-8000 Aarhus
| | | | | | | | | | | | | |
Collapse
|