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Kröber TU, Holzer M, Kerpes R, Mittermeier-Kleßinger VK, Dawid C, Becker T. Enrichment and Quantitation of Dipeptidyl Peptidase IV Inhibitory Peptides in Quinoa upon Systematic Malting. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:11480-11492. [PMID: 38733562 PMCID: PMC11117401 DOI: 10.1021/acs.jafc.4c00570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 04/13/2024] [Accepted: 05/05/2024] [Indexed: 05/13/2024]
Abstract
Food-derived peptides with an inhibitory effect on dipeptidyl peptidase IV (DPP-IV) can be used as an additive treatment for type 2 diabetes. The inhibitory potential of food depends on technological protein hydrolysis and gastrointestinal digestion, as the peptides only act after intestinal resorption. The effect of malting as a hydrolytic step on the availability of these peptides in grains has yet to be investigated. In this study, quinoa was malted under systematic temperature, moisture, and time variations. In the resulting malts, the DPP-IV inhibition reached a maximum of 45.02 (±10.28) %, whereas the highest overall concentration of literature-known inhibitory peptides was 4.07 μmol/L, depending on the malting parameters. After in vitro gastrointestinal digest, the inhibition of most malts, as well as the overall concentration of inhibitory peptides, could be increased significantly. Additionally, the digested malts showed higher values in both the inhibition and the peptide concentration than the unmalted quinoa. Concerning the malting parameters, germination time had the highest impact on the inhibition and the peptide concentration after digest. An analysis of the protein sizes before and after malting gave first hints toward the origin of these peptides, or their precursors, in quinoa.
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Affiliation(s)
- Tabea
D. U. Kröber
- Chair
of Brewing and Beverage Technology, School of Life Sciences Weihenstephan, Technical University of Munich, Weihenstephaner Steig 20, 85354 Freising, Germany
| | - Magdalena Holzer
- Chair
of Food Chemistry and Molecular Sensory Science, School of Life Sciences
Weihenstephan, Technical University of Munich, Lise-Meitner-Strasse 34, 85354 Freising, Germany
| | - Roland Kerpes
- Chair
of Brewing and Beverage Technology, School of Life Sciences Weihenstephan, Technical University of Munich, Weihenstephaner Steig 20, 85354 Freising, Germany
| | - Verena K. Mittermeier-Kleßinger
- Chair
of Food Chemistry and Molecular Sensory Science, School of Life Sciences
Weihenstephan, Technical University of Munich, Lise-Meitner-Strasse 34, 85354 Freising, Germany
| | - Corinna Dawid
- Chair
of Food Chemistry and Molecular Sensory Science, School of Life Sciences
Weihenstephan, Technical University of Munich, Lise-Meitner-Strasse 34, 85354 Freising, Germany
- Professorship
for Functional Phytometabolomics, School of Life Sciences Weihenstephan, Technical University of Munich, Lise-Meitner-Strasse 34, 85354 Freising, Germany
| | - Thomas Becker
- Chair
of Brewing and Beverage Technology, School of Life Sciences Weihenstephan, Technical University of Munich, Weihenstephaner Steig 20, 85354 Freising, Germany
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Vorster J, van der Westhuizen W, du Plessis G, Marais D, Sparvoli F, Cominelli E, Camilli E, Ferrari M, Le Donne C, Marconi S, Lisciani S, Losa A, Sala T, Kunert K. In order to lower the antinutritional activity of serine protease inhibitors, we need to understand their role in seed development. FRONTIERS IN PLANT SCIENCE 2023; 14:1252223. [PMID: 37860251 PMCID: PMC10582697 DOI: 10.3389/fpls.2023.1252223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 08/29/2023] [Indexed: 10/21/2023]
Abstract
Proteases, including serine proteases, are involved in the entire life cycle of plants. Proteases are controlled by protease inhibitors (PI) to limit any uncontrolled or harmful protease activity. The role of PIs in biotic and abiotic stress tolerance is well documented, however their role in various other plant processes has not been fully elucidated. Seed development is one such area that lack detailed work on the function of PIs despite the fact that this is a key process in the life cycle of the plant. Serine protease inhibitors (SPI) such as the Bowman-Birk inhibitors and Kunitz-type inhibitors, are abundant in legume seeds and act as antinutrients in humans and animals. Their role in seed development is not fully understood and present an interesting research target. Whether lowering the levels and activity of PIs, in order to lower the anti-nutrient levels in seed will affect the development of viable seed, remains an important question. Studies on the function of SPI in seed development are therefore required. In this Perspective paper, we provide an overview on the current knowledge of seed storage proteins, their degradation as well as on the serine protease-SPI system in seeds and what is known about the consequences when this system is modified. We discuss areas that require investigation. This includes the identification of seed specific SPIs; screening of germplasms, to identify plants with low seed inhibitor content, establishing serine protease-SPI ratios and lastly a focus on molecular techniques that can be used to modify seed SPI activity.
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Affiliation(s)
- Juan Vorster
- Department Plant and Soil Sciences, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - Willem van der Westhuizen
- Department Plant and Soil Sciences, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - Gedion du Plessis
- Department Plant and Soil Sciences, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - Diana Marais
- Department Plant and Soil Sciences, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - Francesca Sparvoli
- National Research Council, Institute of Agricultural Biology and Biotechnology (CNR-IBBA), Milan, Italy
| | - Eleonora Cominelli
- National Research Council, Institute of Agricultural Biology and Biotechnology (CNR-IBBA), Milan, Italy
| | - Emanuela Camilli
- Council for Agricultural Research and Economics, Research Centre for Food and Nutrition, Rome, Italy
| | - Marika Ferrari
- Council for Agricultural Research and Economics, Research Centre for Food and Nutrition, Rome, Italy
| | - Cinzia Le Donne
- Council for Agricultural Research and Economics, Research Centre for Food and Nutrition, Rome, Italy
| | - Stefania Marconi
- Council for Agricultural Research and Economics, Research Centre for Food and Nutrition, Rome, Italy
| | - Silvia Lisciani
- Council for Agricultural Research and Economics, Research Centre for Food and Nutrition, Rome, Italy
| | - Alessia Losa
- Council for Research in Agriculture and Economics, Research Centre for Genomics and Bioinformatics, Montanaso Lombardo, Italy
| | - Tea Sala
- Council for Research in Agriculture and Economics, Research Centre for Genomics and Bioinformatics, Montanaso Lombardo, Italy
| | - Karl Kunert
- Department Plant and Soil Sciences, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa
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Insights on the Proteases Involved in Barley and Wheat Grain Germination. Int J Mol Sci 2019; 20:ijms20092087. [PMID: 31035313 PMCID: PMC6539298 DOI: 10.3390/ijms20092087] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 04/22/2019] [Accepted: 04/24/2019] [Indexed: 01/11/2023] Open
Abstract
Seed storage proteins must be hydrolyzed by proteases to deliver the amino acids essential for embryo growth and development. Several groups of proteases involved in this process have been identified in both the monocot and the dicot species. This review focuses on the implication of proteases during germination in two cereal species, barley and wheat, where proteolytic control during the germination process has considerable economic importance. Formerly, the participation of proteases during grain germination was inferred from reports of proteolytic activities, the expression of individual genes, or the presence of individual proteins and showed a prominent role for papain-like and legumain-like cysteine proteases and for serine carboxypeptidases. Nowadays, the development of new technologies and the release of the genomic sequences of wheat and barley have permitted the application of genome-scale approaches, such as those used in functional genomics and proteomics. Using these approaches, the repertoire of proteases known to be involved in germination has increased and includes members of distinct protease families. The development of novel techniques based on shotgun proteomics, activity-based protein profiling, and comparative and structural genomics will help to achieve a general view of the proteolytic process during germination.
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Gerna D, Roach T, Stöggl W, Wagner J, Vaccino P, Limonta M, Kranner I. Changes in low-molecular-weight thiol-disulphide redox couples are part of bread wheat seed germination and early seedling growth. Free Radic Res 2017; 51:568-581. [PMID: 28580817 DOI: 10.1080/10715762.2017.1338344] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The tripeptide antioxidant glutathione (γ-l-glutamyl-l-cysteinyl-glycine; GSH) essentially contributes to thiol-disulphide conversions, which are involved in the control of seed development, germination, and seedling establishment. However, the relative contribution of GSH metabolism in different seed structures is not fully understood. We studied the GSH/glutathione disulphide (GSSG) redox couple and associated low-molecular-weight (LMW) thiols and disulphides related to GSH metabolism in bread wheat (Triticum aestivum L.) seeds, focussing on redox changes in the embryo and endosperm during germination. In dry seeds, GSH was the predominant LMW thiol and, 15 h after the onset of imbibition, embryos of non-germinated seeds contained 12 times more LMW thiols than the endosperm. In germinated seeds, the embryo contained 17 and 11 times more LMW thiols than the endosperm after 15 and 48 h, respectively. This resulted in the embryo having significantly more reducing half-cell reduction potentials of GSH/GSSG and cysteine (Cys)/cystine (CySS) redox couples (EGSSG/2GSH and ECySS/2Cys, respectively). Upon seed germination and early seedling growth, Cys and CySS concentrations significantly increased in both embryo and endosperm, progressively contributing to the cellular LMW thiol-disulphide redox environment (Ethiol-disulphide). The changes in ECySS/2Cys could be related to the mobilisation of storage proteins in the endosperm during early seedling growth. We suggest that EGSSG/2GSH and ECySS/2Cys can be used as markers of the physiological and developmental stage of embryo and endosperm. We also present a model of interaction between LMW thiols and disulphides with hydrogen peroxide (H2O2) in redox regulation of bread wheat germination and early seedling growth.
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Affiliation(s)
- Davide Gerna
- a Department of Botany , Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck , Innsbruck , Austria
| | - Thomas Roach
- a Department of Botany , Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck , Innsbruck , Austria
| | - Wolfgang Stöggl
- a Department of Botany , Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck , Innsbruck , Austria
| | - Johanna Wagner
- a Department of Botany , Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck , Innsbruck , Austria
| | - Patrizia Vaccino
- b Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria , Research Unit for Cereal Selection in Continental Areas, S . Angelo Lodigiano , Italy
| | - Margherita Limonta
- b Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria , Research Unit for Cereal Selection in Continental Areas, S . Angelo Lodigiano , Italy
| | - Ilse Kranner
- a Department of Botany , Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck , Innsbruck , Austria
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Li S, Hu Y, Hong Y, Xu L, Zhou M, Fu C, Wang C, Xu N, Li D. Analysis of the Hydrolytic Capacities of Aspergillus oryzae
Proteases on Soybean Protein Using Artificial Neural Networks. J FOOD PROCESS PRES 2015. [DOI: 10.1111/jfpp.12670] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shiwen Li
- Hubei Cooperative Innovation Center for Industrial Fermentation; Research Center of Food Fermentation Engineering and Technology of Hubei; Hubei University of Technology; Wuhan 430068 China
| | - Yong Hu
- Hubei Cooperative Innovation Center for Industrial Fermentation; Research Center of Food Fermentation Engineering and Technology of Hubei; Hubei University of Technology; Wuhan 430068 China
| | - Yingmin Hong
- Hubei Cooperative Innovation Center for Industrial Fermentation; Research Center of Food Fermentation Engineering and Technology of Hubei; Hubei University of Technology; Wuhan 430068 China
| | - Libin Xu
- Hubei Cooperative Innovation Center for Industrial Fermentation; Research Center of Food Fermentation Engineering and Technology of Hubei; Hubei University of Technology; Wuhan 430068 China
| | - Mengzhou Zhou
- Hubei Cooperative Innovation Center for Industrial Fermentation; Research Center of Food Fermentation Engineering and Technology of Hubei; Hubei University of Technology; Wuhan 430068 China
| | - Caixia Fu
- Research and Development Center; Hubei Tulaohan Flavouring and Food Co., Ltd.; Yichang 443000 China
| | - Chao Wang
- Hubei Cooperative Innovation Center for Industrial Fermentation; Research Center of Food Fermentation Engineering and Technology of Hubei; Hubei University of Technology; Wuhan 430068 China
| | - Ning Xu
- Hubei Cooperative Innovation Center for Industrial Fermentation; Research Center of Food Fermentation Engineering and Technology of Hubei; Hubei University of Technology; Wuhan 430068 China
| | - Dongsheng Li
- Hubei Cooperative Innovation Center for Industrial Fermentation; Research Center of Food Fermentation Engineering and Technology of Hubei; Hubei University of Technology; Wuhan 430068 China
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Jin T, Wang Y, Chen YW, Albillos SM, Kothary MH, Fu TJ, Tankersley B, McHugh TH, Zhang YZ. Isolation and characterization of Korean pine (Pinus koraiensis) convicilin. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2014; 80:97-104. [PMID: 24735553 DOI: 10.1016/j.plaphy.2014.03.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 03/19/2014] [Indexed: 06/03/2023]
Abstract
A vicilin-like globulin seed storage protein, termed convicilin, was isolated for the first time from Korean pine (Pinus koraiensis). SDS-PAGE analysis revealed that Korean pine convicilin was post-translationally processed. The N-terminal peptide sequences of its components were determined. These peptides could be mapped to a protein translated from an embryo abundant transcript isolated in this study. Similar to vicilin, native convicilin appeared to be homotrimeric. Differential scanning calorimetry (DSC) analyses revealed that this protein is less resistant to thermal treatment than Korean pine vicilin. Its transition temperature was 75.57 °C compared with 84.13 °C for vicilin. The urea induced folding-unfolding equilibrium of pine convicilin monitored by intrinsic fluorescence could be interpreted in terms of a two-state model, with a Cm of 4.41 ± 0.15 M.
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Affiliation(s)
- Tengchuan Jin
- Department of Biological and Chemical Sciences, Illinois Institute of Technology, Chicago, IL 60616, USA.
| | - Yang Wang
- Department of Biological and Chemical Sciences, Illinois Institute of Technology, Chicago, IL 60616, USA
| | - Yu-Wei Chen
- Department of Biological and Chemical Sciences, Illinois Institute of Technology, Chicago, IL 60616, USA
| | - Silvia M Albillos
- Institute for Food Safety and Health, Illinois Institute of Technology, 6502 South Archer Road, Bedford Park, IL 60501, USA
| | - Mahendra H Kothary
- Center for Food Safety and Applied Nutrition, U.S. Food & Drug Administration, Laurel, MD 20708, USA
| | - Tong-Jen Fu
- Institute for Food Safety and Health, U.S. Food & Drug Administration, 6502 South Archer Road, Bedford Park, IL 60501, USA
| | | | - Tara H McHugh
- Healthy Processed Foods Research Unit, USDA-ARS, Western Regional Research Center, 800 Buchanan Street, Albany, CA 94710, USA
| | - Yu-Zhu Zhang
- Healthy Processed Foods Research Unit, USDA-ARS, Western Regional Research Center, 800 Buchanan Street, Albany, CA 94710, USA; Department of Biological and Chemical Sciences, Illinois Institute of Technology, Chicago, IL 60616, USA.
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7
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Molecular cloning and expression analysis of the main gliadin-degrading cysteine endopeptidase EP8 from triticale. J Cereal Sci 2013. [DOI: 10.1016/j.jcs.2013.06.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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