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Zhang H, Lv S, Jin C, Ren F, Wang J. Wheat gluten amyloid fibrils: Conditions, mechanism, characterization, application, and future perspectives. Int J Biol Macromol 2023; 253:126435. [PMID: 37611682 DOI: 10.1016/j.ijbiomac.2023.126435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 08/17/2023] [Accepted: 08/18/2023] [Indexed: 08/25/2023]
Abstract
Amyloid fibrils have excellent structural characteristics, such as a high aspect ratio, excellent stiffness, and a wide availability of functional groups on the surface. More studies are now focusing on the formation of amyloid fibrils using food proteins. Protein fibrillation is now becoming recognized as a promising strategy for enhancing the function of food proteins and expanding their range of applications. Wheat gluten is rich in glutamine (Q), hydrophobic amino acids, and the α-helix structure with high β-sheet tendency. These characteristics make it very easy for wheat gluten to form amyloid fibrils. The conditions, formation mechanism, characterization methods, and application of amyloid fibrils formed by wheat gluten are summarized in this review. Further exploration of amyloid fibrils formed by wheat gluten will reveal how they can play a significant role in food, biology, and other fields, especially in medicine.
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Affiliation(s)
- Huijuan Zhang
- School of Food and Health, Beijing Technology & Business University (BTBU), Beijing 100048, China.
| | - Shihao Lv
- School of Food and Health, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Chengming Jin
- School of Food and Health, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Feiyue Ren
- School of Food and Health, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Jing Wang
- School of Food and Health, Beijing Technology & Business University (BTBU), Beijing 100048, China.
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2
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Zein and gluten interactions: A rheological and confocal Raman microscopy study. J Cereal Sci 2022. [DOI: 10.1016/j.jcs.2022.103563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Application of zein in gluten-free foods: A comprehensive review. Food Res Int 2022; 160:111722. [DOI: 10.1016/j.foodres.2022.111722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 07/04/2022] [Accepted: 07/19/2022] [Indexed: 01/11/2023]
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4
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Gómez M. Gluten-free bakery products: Ingredients and processes. ADVANCES IN FOOD AND NUTRITION RESEARCH 2022; 99:189-238. [PMID: 35595394 DOI: 10.1016/bs.afnr.2021.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
There is an increasing demand for gluten-free products around the world because certain groups of people, which have increased in the last decades, need to eliminate gluten from their diet. A growing number of people consider gluten-free products to be healthier. However, making gluten-free products such as bread is a technological challenge due to the important role of the gluten network in their development. However, other products, such as cakes and cookies usually made with wheat flour, can easily be made with gluten-free starches or flours since gluten does not play an essential role in their production. To replace wheat flour in these elaborations it is necessary to resort to gluten-free starches and/or flours and to gluten substitutes. Additionally, it can be convenient to incorporate other ingredients such as proteins, fibers, sugars or oils, as well as to modify their quantities in wheat flour formulations. Regarding gluten-free flours, it will also be necessary to know the parameters that influence their functionality in order to obtain regular products. These problems have originated a lower availability of gluten-free products which have a worse texture and are less tasty and more expensive than their homologues with gluten. These problems have been partially solved thanks to research on these types of products, their ingredients and their production methods. In recent years, studies about the nutritional improvement of these products have increased. This chapter delves into the main ingredients used in the production of gluten-free products, the processes for making gluten-free breads, cakes and cookies, and the nutritional quality of these products.
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Affiliation(s)
- Manuel Gómez
- Food Technology Area, College of Agricultural Engineering, University of Valladolid, Palencia, Spain.
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5
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Xu Z, Shan G, Hao N, Li L, Lan T, Dong Y, Wen J, Tian R, Zhang Y, Jiang L, Sui X. Structure remodeling of soy protein-derived amyloid fibrils mediated by epigallocatechin-3-gallate. Biomaterials 2022; 283:121455. [DOI: 10.1016/j.biomaterials.2022.121455] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 02/18/2022] [Accepted: 03/03/2022] [Indexed: 12/18/2022]
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6
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Sadat A, Corradini MG, Joye IJ. Vibrational and fluorescence spectroscopy to study gluten and zein interactions in complex dough systems. Curr Res Food Sci 2022; 5:479-490. [PMID: 35265856 PMCID: PMC8899121 DOI: 10.1016/j.crfs.2022.02.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 02/15/2022] [Accepted: 02/18/2022] [Indexed: 12/02/2022] Open
Abstract
The volume-spanning network formed by gluten during breadmaking is crucial in the production of high-quality bakery products. Zein proteins are also capable of forming a protein network under specific conditions. Vibrational (Fourier transform infrared spectroscopy (FTIR) and Raman scattering) and fluorescence spectroscopy are powerful, non-invasive techniques capable of assessing protein structures and interactions. The main objective of this project was to explore the suitability of these techniques to study zein and gluten structures and interactions in complex dough systems. The dough samples were prepared by mixing 20 w/w% of protein (with different proportions of zein and gluten) and 80 w/w% of corn starch. The tyrosine (Tyr) fluorescence emission peak (λexc = 280 nm) was still present even in those zein-gluten samples containing the highest gluten concentration and lowest zein concentration. This suggests that the Tyr moieties (stemming from zein) are not in close proximity to tryptophan (Trp) of gluten and their fluorescence is not quenched efficiently. Raman scattering results also showed the presence of different Tyr residues, exposed and buried, as well as different conformations of disulfide bridges, in zein and gluten samples. Based on the results from spectroscopic measurements and scanning electron microscopy (SEM), two distinct network structures composed of gluten and zein were identified in the mixed dough systems. The present work illustrates how complementary vibrational (Raman scattering and FTIR) and fluorescence spectroscopy methods can be combined to non-invasively assess protein structure and interactions in a complex food matrix. Exploration of non-invasive techniques to study proteins in complex food systems. Complementary information obtained on protein structure at several length scales. Zein dough viscoelasticity relates to the formation of beta-sheet rich fibrils. Gluten and zein form two distinct network structures in dough making. Zein inclusion increases water availability for gluten in gluten-zein dough.
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Affiliation(s)
- Azin Sadat
- Department of Food Science, University of Guelph, Guelph, Canada
| | - Maria G. Corradini
- Department of Food Science, University of Guelph, Guelph, Canada
- Arrell Food Institute, University of Guelph, Guelph, Canada
| | - Iris J. Joye
- Department of Food Science, University of Guelph, Guelph, Canada
- Corresponding author.
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7
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Chen D, Jones OG, Campanella OH. Plant protein-based fibers: Fabrication, characterization, and potential food applications. Crit Rev Food Sci Nutr 2021:1-25. [PMID: 34904477 DOI: 10.1080/10408398.2021.2004991] [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] [Indexed: 01/18/2023]
Abstract
Proteins from plants have been considered as safer, healthier, and more sustainable resources than their animal counterparts. However, incomplete amino acid composition and relatively poor functionality limit their applications in foods. Structuring plant proteins to fibrous architectures enhances their physicochemical properties, which can favor various food applications. This review primarily focuses on fabrication of fibers from plant proteins via self-assembly, electrospinning, solution blow spinning, wet spinning, and high-temperature shear, as well as on several applications where such fibrous proteins assemble in quality foods. The changes of protein structure and protein-protein interactions during fiber production are discussed in detail, along with the effects of fabrication conditions and protein sources on the morphology and function of the fibers. Self-assembly requires proteolysis and subsequent peptide aggregation under specific conditions, which can be influenced by pH, salt and protein type. The spinning strategy is more scalable and produces uniformed fibers with larger length scales suitable for encapsulation, food packaging and sensor substrates. Significant progress has been made on high-temperature shear (including extrusion)-induced fibers responsible for desirable texture in meat analogues. Structuring plant proteins adds values for broadened food applications, but it remains challenging to keep processes cost-effective and environmentally friendly using food grade solvents.
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Affiliation(s)
- Da Chen
- Department of Food Science and Technology, The Ohio State University, Columbus, Ohio, USA
| | - Owen Griffith Jones
- Whistler Centre for Carbohydrate Research, Purdue University, West Lafayette, Indiana, USA.,Department of Food Science, Purdue University, West Lafayette, Indiana, USA
| | - Osvaldo H Campanella
- Department of Food Science and Technology, The Ohio State University, Columbus, Ohio, USA.,Whistler Centre for Carbohydrate Research, Purdue University, West Lafayette, Indiana, USA
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9
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10
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Zhang X, Dong C, Hu Y, Gao M, Luan G. Zein as a structural protein in gluten-free systems: an overview. FOOD SCIENCE AND HUMAN WELLNESS 2021. [DOI: 10.1016/j.fshw.2021.02.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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11
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Sun C, Xiong Z, Zhang J, Fang Y. Environmental parameters-dependent self-assembling behaviors of α-zein in aqueous ethanol solution studied by atomic force microscopy. Food Chem 2020; 331:127349. [PMID: 32593041 DOI: 10.1016/j.foodchem.2020.127349] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 06/07/2020] [Accepted: 06/12/2020] [Indexed: 11/20/2022]
Abstract
Atomic force microscopy was applied to characterize the self-assembling behaviors of α-zein molecules in 70% (v/v) aqueous ethanol solution under different parameters including α-zein concentration (0.001%-0.1%, w/v), pH (2.0-8.0) and the thermal treatment (90 ℃, 2-24 h). α-Zein (0.1% and 0.01%, w/v) at pH 7.0 formed globules while α-zein assemblies (0.001%, w/v) exhibited the co-existence of worm-like strings, bundles of fibers, and rod-like fibers. Heating the aqueous ethanol solutions containing 0.001% (w/v) α-zein at 90 °C and pH 4.0 converted the irregular aggregates into regular spherical particles (100-120 nm), followed by fibrils (15-50 nm) at a prolonged times (8 h). Besides, fibrils were formed after heating aqueous ethanol solutions containing α-zein (0.001%, w/v) at pH 2.0 for 8 h. A two-step mechanism was proposed to explain such findings, which involved the aggregation of α-zein molecules to form aggregates, and followed by the rearrangement of α-zein molecules to form fibrils.
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Affiliation(s)
- Cuixia Sun
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zheqiang Xiong
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Junwei Zhang
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yapeng Fang
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
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12
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A Systematic Review of Gluten-Free Dough and Bread: Dough Rheology, Bread Characteristics, and Improvement Strategies. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10186559] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
High-quality, gluten-free doughs and bakery products are clearly more difficult to produce than wheat flour-based products. The poor quality of the breads that are currently available demonstrates that manufacturing remains a significant technological problem. This is mainly due to the absence of gluten, which has a huge negative impact on dough rheology and bread characteristics. Gluten replacement is still the major challenge in the development of doughs and baked goods. The literature documents various improvement strategies. The most active approach seeks to identify alternative ingredients that can mimic the viscoelastic properties of the gluten network, notably hydrocolloids, enzymes, emulsifiers, and alternative sources of protein. However, other innovative strategies, such as high pressure, using heat to dry flour, and sourdough fermentation, have been investigated. In this context, the first aim of this review is to summarize current knowledge regarding gluten-free doughs, breads, and bakery products. Secondly, as it is clear that the manufacture of gluten-free products remains a key challenge, it suggests some improvement strategies that can boost their nutritional, technological, and sensorial characteristics.
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13
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Erickson DP, Ozturk OK, Selling G, Chen F, Campanella OH, Hamaker BR. Corn zein undergoes conformational changes to higher β-sheet content during its self-assembly in an increasingly hydrophilic solvent. Int J Biol Macromol 2020; 157:232-239. [DOI: 10.1016/j.ijbiomac.2020.04.169] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/15/2020] [Accepted: 04/21/2020] [Indexed: 02/05/2023]
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14
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Mattice KD, Marangoni AG. Comparing methods to produce fibrous material from zein. Food Res Int 2020; 128:108804. [DOI: 10.1016/j.foodres.2019.108804] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 10/17/2019] [Accepted: 11/04/2019] [Indexed: 11/30/2022]
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15
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16
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Akin PA, Bean SR, Smith BM, Tilley M. Factors Influencing Zein-Whole Sorghum Flour Dough Formation and Bread Quality. J Food Sci 2019; 84:3522-3534. [PMID: 31721217 DOI: 10.1111/1750-3841.14832] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 09/04/2019] [Accepted: 09/04/2019] [Indexed: 12/11/2022]
Abstract
Zein is known to able to form viscoelastic dough with wheat-like properties under certain conditions. Several studies have been conducted to explain the mechanism behind this ability and to improve the functionality and end-use quality of zein-based dough systems. However, most of this research has been conducted using zein in combination with isolated starches or high-starch flours. To investigate the production of additional zein-whole sorghum flour breads, experiments were conducted to determine factors impacting zein-whole sorghum flour dough and bread quality. Optimizing water levels, using defatted zein and/or sorghum flour, and increasing zein content in dough formulas were investigated as initial formulation steps. Of these factors, increasing zein content from 20% to 30% (flour weight basis) had the greatest impact, resulting in stronger zein-based dough and improved bread quality. Additives and zein treatments shown to impact zein functionality were then investigated for their effect of zein-whole sorghum flour breads. Mixing zein and whole sorghum flour with 0.5% hydrogen peroxide, 5% ethanol, or 3% hydroxypropyl methylcellulose resulted in improved dough strength and bread quality. Breads made from whole white sorghum flour had improved quality compared to zein-based breads made with black or high-tannin whole sorghum flour. PRACTICAL APPLICATION: Zein is known to be able to form wheat-like dough when mixed under the right conditions. Most of the research on zein-based dough and food products has used high-starch flours. This project investigated optimizing the production of zein-whole sorghum flour dough and bread as an alternative. Increasing the zein content in the formula and using additives including ethanol and HPMC produced breads from zein-whole sorghum flour that were like those made with zein and pure starch.
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Affiliation(s)
- Pervin Ari Akin
- Dept. of Grain Science and Industry, Kansas State Univ., Manhattan, KS, 66506, U.S.A.,Field Crops Central Research Inst., Gayret Mahallesi, 11, Şht. Cem Ersever Cd., Yenimahalle, Ankara, Turkey, 06170
| | - Scott R Bean
- Center for Grain and Animal Health Research, USDA-ARS, 1515 College Ave., Manhattan, KS, 66502, U.S.A
| | - Brennan M Smith
- School of Food Science, Univ. of Idaho, 875 Perimeter Dr, Moscow, ID, 83844, U.S.A
| | - Michael Tilley
- Center for Grain and Animal Health Research, USDA-ARS, 1515 College Ave, Manhattan, KS, 66502, U.S.A
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17
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Mahajan UR, Mhaske ST. Kafirin-derived films for sustainable development by amidation and esterification. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02876-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Jansens KJA, Lambrecht MA, Rombouts I, Monge Morera M, Brijs K, Rousseau F, Schymkowitz J, Delcour JA. Conditions Governing Food Protein Amyloid Fibril Formation-Part I: Egg and Cereal Proteins. Compr Rev Food Sci Food Saf 2019; 18:1256-1276. [PMID: 33336994 DOI: 10.1111/1541-4337.12462] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/26/2019] [Accepted: 05/13/2019] [Indexed: 12/18/2022]
Abstract
Conditions including heating mode, time, temperature, pH, moisture and protein concentration, shear, and the presence of alcohols, chaotropic/reducing agents, enzymes, and/or salt influence amyloid fibril (AF) formation as they can affect the accessibility of amino acid sequences prone to aggregate. As some conditions applied on model protein resemble conditions in food processing unit operations, we here hypothesize that food processing can lead to formation of protein AFs with a compact cross β-sheet structure. This paper reviews conditions and food constituents that affect amyloid fibrillation of egg and cereal proteins. While egg and cereal proteins often coexist in food products, their impact on each other's fibrillation remains unknown. Hen egg ovalbumin and lysozyme form AFs when subjected to moderate heating at acidic pH separately. AFs can also be formed at higher pH, especially in the presence of alcohols or chaotropic/reducing agents. Tryptic wheat gluten digests can form fibrillar structures at neutral pH and maize and rice proteins do so in aqueous ethanol or at acidic pH, respectively.
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Affiliation(s)
- Koen J A Jansens
- KU Leuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001, Leuven, Belgium.,Nutrex NV, Achterstenhoek 5, B-2275, Lille, Belgium
| | - Marlies A Lambrecht
- KU Leuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001, Leuven, Belgium
| | - Ine Rombouts
- KU Leuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001, Leuven, Belgium.,KU Leuven, ECOVO, Kasteelpark Arenberg 21, B-3001, Leuven, Belgium
| | - Margarita Monge Morera
- KU Leuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001, Leuven, Belgium
| | - Kristof Brijs
- KU Leuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001, Leuven, Belgium
| | - Frederic Rousseau
- Switch Laboratory, VIB, and Dept. of Cellular and Molecular Medicine, KU Leuven, B-3000, Leuven, Belgium
| | - Joost Schymkowitz
- Switch Laboratory, VIB, and Dept. of Cellular and Molecular Medicine, KU Leuven, B-3000, Leuven, Belgium
| | - Jan A Delcour
- KU Leuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001, Leuven, Belgium
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Berta M, Koelewijn I, Öhgren C, Stading M. Effect of zein protein and hydroxypropyl methylcellulose on the texture of model gluten‐free bread. J Texture Stud 2019; 50:341-349. [DOI: 10.1111/jtxs.12394] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 01/28/2019] [Accepted: 02/19/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Marco Berta
- Agrifood & Bioscience ‐ Product Design and Perception, Research Institute of Sweden (RISE) Gothenburg Sweden
| | - Ingrid Koelewijn
- Agrifood & Bioscience ‐ Product Design and Perception, Research Institute of Sweden (RISE) Gothenburg Sweden
- Department of Food TechnologyUniversity of Applied Sciences HAS Den Bosch 's‐Hertogenbosch the Netherlands
| | - Camilla Öhgren
- Agrifood & Bioscience ‐ Product Design and Perception, Research Institute of Sweden (RISE) Gothenburg Sweden
| | - Mats Stading
- Agrifood & Bioscience ‐ Product Design and Perception, Research Institute of Sweden (RISE) Gothenburg Sweden
- Department of Materials and Manufacturing TechnologyChalmers University of Technology Gothenburg Sweden
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Comparative functional properties of kafirin and zein viscoelastic masses formed by simple coacervation at different acetic acid and protein concentrations. J Cereal Sci 2018. [DOI: 10.1016/j.jcs.2018.07.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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Lambrecht MA, Deleu LJ, Rombouts I, Delcour JA. Heat-induced network formation between proteins of different sources in model systems, wheat-based noodles and pound cakes. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2017.12.032] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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22
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Characteristics of white, yellow, purple corn accessions: phenolic profile, textural, rheological properties and muffin making potential. Journal of Food Science and Technology 2018; 55:2334-2343. [PMID: 29892134 DOI: 10.1007/s13197-018-3171-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/14/2018] [Accepted: 04/09/2018] [Indexed: 10/17/2022]
Abstract
Physicochemical, antioxidant, phenolic profile and muffin-making properties of white, yellow and purple corn accessions were evaluated. HPLC analysis revealed the presence of ferulic acid, quercetin, sinapic acid, gallic acid and protocatechuic acid in different corn accessions. Ferulic acid was the major phenolic acid present in all accessions. Total phenolic content (TPC), DPPH and ABTS inhibition ranged from 903 to 1843 µg GAE/g, 0.73-0.89 and 3.81-4.92 µM trolox/mg, respectively. Purple accessions had higher TPC than yellow and white accessions. Pasting profiles of different accessions revealed high thermal stability indicated by low breakdown viscosity. Muffin-making properties were determined as batter rheology and muffin specific volume, texture and sensory analysis. Storage modulus (G') and loss modulus (G″) of batters for white colored exhibited the highest while yellow colored had the lowest value. Firmness and TPC of muffins ranged from 3.1 to 5.9 N and 811-1406 µg GAE/g, respectively. Muffin cohesiveness and chewiness were correlated positively, whereas firmness was negatively related to paste viscosities. Antioxidant activity was correlated to phenolic content of the muffins. Sensory analysis revealed that muffins prepared from yellow corn accession (IC447648) were highly acceptable, while those made from purple corn (IC447644) were not liked much.
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23
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Comparison of formation of visco-elastic masses and their properties between zeins and kafirins. Food Chem 2018; 245:178-188. [DOI: 10.1016/j.foodchem.2017.10.082] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 10/13/2017] [Accepted: 10/15/2017] [Indexed: 11/18/2022]
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24
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Elhassan MS, Oguntoyinbo SI, Taylor J, Taylor JR. Formation and properties of viscoelastic masses made from kafirin by a process of simple coacervation from solution in glacial acetic acid using water. Food Chem 2018; 239:333-342. [DOI: 10.1016/j.foodchem.2017.06.114] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 06/18/2017] [Accepted: 06/20/2017] [Indexed: 11/26/2022]
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25
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Preparation and characterization of gluten-free sheeted doughs and noodles with zein and rice flour containing different amylose contents. J Cereal Sci 2017. [DOI: 10.1016/j.jcs.2017.03.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Rheological and secondary structural characterization of rice flour-zein composites for noodles slit from gluten-free sheeted dough. Food Chem 2017; 221:1539-1545. [DOI: 10.1016/j.foodchem.2016.10.139] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 09/30/2016] [Accepted: 10/28/2016] [Indexed: 11/18/2022]
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27
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Smith BM, Bean SR, Selling G, Sessa D, Aramouni FM. Effect of Salt and Ethanol Addition on Zein-Starch Dough and Bread Quality. J Food Sci 2017; 82:613-621. [DOI: 10.1111/1750-3841.13637] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 12/16/2016] [Accepted: 01/03/2017] [Indexed: 12/01/2022]
Affiliation(s)
| | - Scott R. Bean
- USDA-ARS Center for Grain and Animal Health Research; Manhattan KS 66502 U.S.A
| | - Gordon Selling
- USDA-ARS Natl. Center for Agriculture Utilization Center; Peoria IL 61604 U.S.A
| | - David Sessa
- USDA-ARS Natl. Center for Agriculture Utilization Center; Peoria IL 61604 U.S.A
| | - Fadi M. Aramouni
- Food Science Inst.; Kansas State Univ.; Manhattan KS 66506 U.S.A
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Lambrecht MA, Rombouts I, De Ketelaere B, Delcour JA. Prediction of heat-induced polymerization of different globular food proteins in mixtures with wheat gluten. Food Chem 2016; 221:1158-1167. [PMID: 27979074 DOI: 10.1016/j.foodchem.2016.11.043] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 10/11/2016] [Accepted: 11/08/2016] [Indexed: 11/16/2022]
Abstract
Egg, soy or whey protein co-exists with wheat gluten in different food products. Different protein types impact each other during heat treatment. A positive co-protein effect occurs when heat-induced polymerization of a mixture of proteins is more intense than that of the isolated proteins. The intrinsic protein characteristics of globular proteins which enhance polymerization in mixtures with gluten are unknown. In this report, a model was developed to predict potential co-protein effects in mixtures of gluten and globular proteins during heating at 100°C. A negative co-protein effect with addition of lysozyme, no co-protein effect with soy glycinin or egg yolk and positive co-protein effects with bovine serum albumin, (S-)ovalbumin, egg white, whole egg, defatted egg yolk, wheat albumins and wheat globulins were detected. The level of accessible free sulfhydryl groups and the surface hydrophobicity of unfolded globular proteins were the main characteristics in determining the co-protein effects in gluten mixtures.
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Affiliation(s)
- Marlies A Lambrecht
- KU Leuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001 Leuven, Belgium.
| | - Ine Rombouts
- KU Leuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001 Leuven, Belgium.
| | - Bart De Ketelaere
- KU Leuven, Department of Biosystems, Kasteelpark Arenberg 30, B-3001 Heverlee, Belgium.
| | - Jan A Delcour
- KU Leuven, Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Kasteelpark Arenberg 20, B-3001 Leuven, Belgium.
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29
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An B, Wu X, Li M, Chen Y, Li F, Yan X, Wang J, Li C, Brennan C. Hydrophobicity-modulating self-assembled morphologies of α-zein in aqueous ethanol. Int J Food Sci Technol 2016. [DOI: 10.1111/ijfs.13248] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Baozhen An
- CAS Key Laboratory of Bio-based Materials; Qingdao Institute of Bioenergy and Bioprocess Technology; Chinese Academy of Sciences; Songling Road 189 Qingdao 266101 China
- Bioengineering Department; College of Chemical Engineering; Qingdao University of Science & Technology; Zhengzhou Road 53 Qingdao 266042 China
| | - Xiaochen Wu
- CAS Key Laboratory of Bio-based Materials; Qingdao Institute of Bioenergy and Bioprocess Technology; Chinese Academy of Sciences; Songling Road 189 Qingdao 266101 China
| | - Mingjie Li
- CAS Key Laboratory of Bio-based Materials; Qingdao Institute of Bioenergy and Bioprocess Technology; Chinese Academy of Sciences; Songling Road 189 Qingdao 266101 China
| | - Yijun Chen
- CAS Key Laboratory of Bio-based Materials; Qingdao Institute of Bioenergy and Bioprocess Technology; Chinese Academy of Sciences; Songling Road 189 Qingdao 266101 China
- College of Textiles and Fashion; Qingdao University; Ningxia Road 308 Qingdao 266071 China
| | - Fei Li
- CAS Key Laboratory of Bio-based Materials; Qingdao Institute of Bioenergy and Bioprocess Technology; Chinese Academy of Sciences; Songling Road 189 Qingdao 266101 China
| | - Xiaofei Yan
- CAS Key Laboratory of Bio-based Materials; Qingdao Institute of Bioenergy and Bioprocess Technology; Chinese Academy of Sciences; Songling Road 189 Qingdao 266101 China
| | - Jialin Wang
- Bioengineering Department; College of Chemical Engineering; Qingdao University of Science & Technology; Zhengzhou Road 53 Qingdao 266042 China
| | - Chaoxu Li
- CAS Key Laboratory of Bio-based Materials; Qingdao Institute of Bioenergy and Bioprocess Technology; Chinese Academy of Sciences; Songling Road 189 Qingdao 266101 China
| | - Charles Brennan
- Department of Wine, Food and Molecular Biosciences; Lincoln University; Lincoln 7647 New Zealand
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30
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Chen Y, Wu X, Lv L, Li F, Liu Z, Kong Q, Li C. Enhancing reducing ability of α-zein by fibrillation for synthesis of Au nanocrystals with continuous flow catalysis. J Colloid Interface Sci 2016; 491:37-43. [PMID: 28012290 DOI: 10.1016/j.jcis.2016.09.081] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 09/30/2016] [Accepted: 09/30/2016] [Indexed: 12/20/2022]
Abstract
Green low-cost synthesis and efficient recyclability are two major hindrances for Au nanocrystals as catalysts applying in diverse industrial reaction processes. By the use of low-cost α-zein (i.e. a major storage protein of corn) as the reductant, capping agent and stabilizer, Au nanocrystals with tunable catalytic activity were synthesized in a wet-chemical approach. Fibrillation of α-zein further enhanced its reducing ability due to larger specific surface area and more hydrophilic groups exposed on the surfaces. The obtained Au nanocrystals had biocompatibility, high stability in various solvents, unique solubility in aqueous alcohol and high catalytic ability, being able to detect ethanol composition in aqueous ethanol as well as H2O2 for diagnosis of diabetes mellitus. These advantages also enable efficient recyclability of Au nanocrystals with continuous flow catalysis in different solvents and environments. Thus, the use of α-zein offered Au nanocrystals not only with green low-cost synthesis, but also with tunable catalytic activities, ethanol-responsiveness and efficient recyclability, which may be applicable in diverse fields.
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Affiliation(s)
- Yijun Chen
- College of Textiles & Clothing, Qingdao University, Qingdao 266071, PR China; CAS Key Laboratory of Bio-based materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao 266101, PR China
| | - Xiaochen Wu
- CAS Key Laboratory of Bio-based materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao 266101, PR China
| | - Lili Lv
- CAS Key Laboratory of Bio-based materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao 266101, PR China
| | - Fei Li
- CAS Key Laboratory of Bio-based materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao 266101, PR China
| | - Zhengqin Liu
- College of Textiles & Clothing, Qingdao University, Qingdao 266071, PR China.
| | - Qingshan Kong
- CAS Key Laboratory of Bio-based materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao 266101, PR China.
| | - Chaoxu Li
- CAS Key Laboratory of Bio-based materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Qingdao 266101, PR China.
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31
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Formation of a viscoelastic dough from isolated total zein (α-, β- and γ-zein) using a glacial acetic acid treatment. J Cereal Sci 2016. [DOI: 10.1016/j.jcs.2016.09.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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32
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Denaturation and covalent network formation of wheat gluten, globular proteins and mixtures thereof in aqueous ethanol and water. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.01.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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33
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Functionality of the storage proteins in gluten-free cereals and pseudocereals in dough systems. J Cereal Sci 2016. [DOI: 10.1016/j.jcs.2015.09.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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34
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35
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Thakur S, Kaur A, Singh N, Virdi AS. Successive Reduction Dry Milling of Normal and Waxy Corn: Grain, Grit, and Flour Properties. J Food Sci 2015; 80:C1144-55. [PMID: 25943010 DOI: 10.1111/1750-3841.12895] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 03/27/2015] [Indexed: 11/30/2022]
Abstract
Dry milling of different corn types resulted in varied proportions of germ, pericarp, grit and flour. Grit and flour produced during different reduction stages varied in particle size and chemical constituents, hence applications in food industry. In this study, recovery of different fractions and variation in physicochemical and pasting properties of grit and flour fractions obtained during 3 successive reduction dry millings of 2 normal (African tall, HQPM1) and 1 waxy corn (IC 550353) were evaluated. Waxy corn grains had the highest L*, a*, b*, ash, fat, and protein content and the lowest weight. Waxy and African tall gave the highest recovery of germ and pericarp, respectively. Waxy corn showed lower grit and flour recovery as compared to normal corn. Flour fractions showed higher L* and lower a* and b* values than grit fractions. Particle size of grit and flour fractions ranged from 840 to 982 μm and 330 to 409 μm, respectively. Fractions with larger particle size showed lower L* value. The b* value showed positive correlation with yellow pigment content. Grit and flour from the 1st reduction stage showed higher ash and fat content. Protein content was correlated positively with ash content and negatively with L* value. Grit and flour fractions with higher protein content had lower pasting viscosities. Pasting viscosities were higher for flours than their corresponding grits. Protein profiling of grit and flour fractions from different stages showed quantitative and qualitative differences in medium (22, 28, and 35 kDa) and low molecular weight (16, 17, and 19 kDa) polypeptides and were related to grit and flour yield.
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Affiliation(s)
- Sheetal Thakur
- Dept. of Food Science and Technology, Guru Nanak Dev Univ., Amritsar, Punjab, India
| | - Amritpal Kaur
- Dept. of Food Science and Technology, Guru Nanak Dev Univ., Amritsar, Punjab, India
| | - Narpinder Singh
- Dept. of Food Science and Technology, Guru Nanak Dev Univ., Amritsar, Punjab, India
| | - Amardeep Singh Virdi
- Dept. of Food Science and Technology, Guru Nanak Dev Univ., Amritsar, Punjab, India
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36
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Matos ME, Rosell CM. Understanding gluten-free dough for reaching breads with physical quality and nutritional balance. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:653-661. [PMID: 24816770 DOI: 10.1002/jsfa.6732] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 05/05/2014] [Accepted: 05/06/2014] [Indexed: 06/03/2023]
Abstract
In the last decade the development of gluten-free foodstuffs has attracted great attention as a result of better diagnoses of coeliac disease and a greater knowledge of the relationship between gluten-free products and health. The increasing interest has prompted extensive research into the development of gluten-free foodstuffs that resemble gluten-containing foods. This review aims to provide some insights on dough functionality and process conditions regarding bread quality and to point out recent research dealing with the nutritional composition of those products. Gluten-free dough results from the combination of different ingredients, additives, and the processing aids required for building up network structures responsible for bread quality. Some relationships between dough rheology and bread characteristics were established to identify possible predictor parameters. Regarding bread-making processes, the impact of mixing, dough treatment and baking is stated. Nutritional quality is an important asset when developing gluten-free breads, and different strategies for improving it are reviewed. Gluten-free bread quality is dependent on ingredients and additives combination, but also processing can provide a way to improve bread quality. Nutritive value of the gluten-free breads must be always in mind when setting up recipes, for obtaining nutritionally balanced bread with adequate glycaemic index.
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Affiliation(s)
- María E Matos
- Instituto de Ciencia y Tecnología de Alimentos (ICTA), Universidad Central de Venezuela, Caracas, Venezuela
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37
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Narancic T, Davis R, Nikodinovic-Runic J, O’ Connor KE. Recent developments in biocatalysis beyond the laboratory. Biotechnol Lett 2015; 37:943-54. [DOI: 10.1007/s10529-014-1762-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 12/16/2014] [Indexed: 11/27/2022]
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38
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Erickson DP, Renzetti S, Jurgens A, Campanella OH, Hamaker BR. Modulating state transition and mechanical properties of viscoelastic resins from maize zein through interactions with plasticizers and co-proteins. J Cereal Sci 2014. [DOI: 10.1016/j.jcs.2014.08.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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39
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Sly AC, Taylor J, Taylor JR. Improvement of zein dough characteristics using dilute organic acids. J Cereal Sci 2014. [DOI: 10.1016/j.jcs.2014.02.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Deora NS, Deswal A, Mishra HN. Functionality of alternative protein in gluten-free product development. FOOD SCI TECHNOL INT 2014; 21:364-79. [PMID: 26048849 DOI: 10.1177/1082013214538984] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Accepted: 05/14/2014] [Indexed: 12/27/2022]
Abstract
Celiac disease is an immune-mediated disease triggered in genetically susceptible individuals by ingested gluten from wheat, rye, barley, and other closely related cereal grains. The current treatment for celiac disease is life-long adherence to a strict gluten-exclusion diet. The replacement of gluten presents a significant technological challenge, as it is an essential structure-building protein, which is necessary for formulating high-quality baked goods. A major limitation in the production of gluten-free products is the lack of protein functionality in non-wheat cereals. Additionally, commercial gluten-free mixes usually contain only carbohydrates, which may significantly limit the amount of protein in the diet. In the recent past, various approaches are attempted to incorporate protein-based ingredients and to modify the functional properties for gluten-free product development. This review aims to the highlight functionality of the alternative protein-based ingredients, which can be utilized for gluten-free product development both functionally as well as nutritionally.
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Affiliation(s)
- Navneet Singh Deora
- Agricultural & Food Engineering Department, IIT Kharagpur, West Bengal, India
| | - Aastha Deswal
- Agricultural & Food Engineering Department, IIT Kharagpur, West Bengal, India
| | - Hari Niwas Mishra
- Agricultural & Food Engineering Department, IIT Kharagpur, West Bengal, India
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41
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O'Shea N, Arendt E, Gallagher E. State of the Art in Gluten-Free Research. J Food Sci 2014; 79:R1067-76. [DOI: 10.1111/1750-3841.12479] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 03/19/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Norah O'Shea
- Food Chemistry and Technology Dept; Teagasc Food Research Centre; Ashtown Dublin 15 Ireland
- Dept. of Food and Nutritional Sciences; Natl. Univ. of Ireland; Cork Ireland
| | - Elke Arendt
- Dept. of Food and Nutritional Sciences; Natl. Univ. of Ireland; Cork Ireland
| | - Eimear Gallagher
- Food Chemistry and Technology Dept; Teagasc Food Research Centre; Ashtown Dublin 15 Ireland
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42
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Increasing the utilisation of sorghum, millets and pseudocereals: Developments in the science of their phenolic phytochemicals, biofortification and protein functionality. J Cereal Sci 2014. [DOI: 10.1016/j.jcs.2013.10.009] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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43
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Anyango JO, Taylor JRN, Taylor J. Role of γ-kafirin in the formation and organization of kafirin microstructures. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:10757-10765. [PMID: 24148070 DOI: 10.1021/jf403571e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The possible importance of the cysteine-rich γ-prolamin in kafirin and zein functionality has been neglected. The role of γ-kafirin in organized microstructures was investigated in microparticles. Residual kafirin (total kafirin minus γ-kafirin) "microparticles" were non-discrete (amorphous mass of material), as viewed by electron microscopy and atomic force microscopy. Adding 15% γ-kafirin to residual kafirin resulted in the formation of a mixture of non-discrete material and nanosize discrete spherical structures. Adding 30% γ-kafirin to the residual kafirin resulted in discrete spherical nanosize particles. Fourier transform infrared spectroscopy indicated that γ-kafirin had a mixture of random-coil and β-sheet conformations, in contrast to total kafirin, which is mainly α-helical conformation. γ-Kafirin also had a very high glass transition temperature (Tg) (≈270 °C). The conformation and high Tg of γ-kafirin probably confer structural stability to kafirin microstructures. Because of its ability to form disulfide cross-links, γ-kafirin appears to be essential to form and stabilize organized microstructures.
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Affiliation(s)
- Joseph O Anyango
- Institute for Food, Nutrition and Well-being and Department of Food Science, University of Pretoria , Private Bag X20, Hatfield 0028, South Africa
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44
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Dar YL. Advances and Ongoing Challenges in the Development of Gluten-free Baked Goods. CEREAL FOOD WORLD 2013. [DOI: 10.1094/cfw-58-6-0298] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Y. L. Dar
- Ingredion Incorporated, Rua Paula Bueno, 2935, Mogi Guaçu, Brasil, 13841-010.Tel: 55 19 3851 9098; Cell: 55 19 998 612 395
- Ingredion Inc., Mogi Guaçu, Brasil
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45
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Rombouts I, Lagrain B, Delcour JA. Heat-induced cross-linking and degradation of wheat gluten, serum albumin, and mixtures thereof. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:10133-10140. [PMID: 22950662 DOI: 10.1021/jf3024672] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Some wheat-based food systems, such as cakes, cookies, and egg noodles, contain mixtures of animal and plant (gluten) proteins and are processed under (mildly) alkaline conditions. Although changes in these proteins during processing can affect end product quality, they have seldom been studied. This study investigated protein cross-linking and degradation during heating (0-120 min, pH 8.0, 50-130 °C) of (mixtures of) wheat gluten and bovine serum albumin (BSA). The decrease in protein extractabilities in sodium dodecyl sulfate containing buffer under (non)reducing conditions and the levels of (cross-linked) amino acids were measured. No indications for polymerization at 50 °C were found. Below 100 °C, BSA polymerized more readily than wheat gluten. Above 100 °C, the opposite was observed. The kinetics of heat-induced polymerization of a 1:1 gluten-BSA mixture were similar to that of isolated gluten, implying that gluten decelerated BSA denaturation. Severe heating (130 °C, >15 min) induced degradation reactions in gluten but not in BSA. At all conditions used in this study, disulfide (SS) bonds contributed to the extractability loss. In addition, above 110 °C, β-elimination of cystine led to non-SS cross-links. Intramolecular SS bonds more often transformed in intermolecular non-SS bonds in BSA than in gluten.
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Affiliation(s)
- Ine Rombouts
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Centre (LFoRCe), Katholieke Universiteit Leuven , Kasteelpark Arenberg 20, B-3001 Leuven, Belgium
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46
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Goodall MA, Campanella OH, Ejeta G, Hamaker BR. Grain of high digestible, high lysine (HDHL) sorghum contains kafirins which enhance the protein network of composite dough and bread. J Cereal Sci 2012. [DOI: 10.1016/j.jcs.2012.04.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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47
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Anyango JO, Duneas N, Taylor JRN, Taylor J. Physicochemical modification of kafirin microparticles and their ability to bind bone morphogenetic protein-2 (BMP-2), for application as a biomaterial. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:8419-8426. [PMID: 22867133 DOI: 10.1021/jf302533e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Vacuolated spherical kafirin microparticles with a mean diameter of 5 μm can be formed from an acidic solution with water addition. Three-dimensional scaffolds for hard tissue repair require large structures with a high degree of interconnected porosity. Cross-linking the formed kafirin microparticles using wet heat or glutaraldehyde treatment resulted in larger structures (approximately 20 μm), which, while similar in size and external morphology, were apparently formed by further assisted assembly by two significantly different mechanisms. Heat treatment, which increased the vacuole size, involved kafirin polymerization by disulfide bonding with the microparticles being formed from round, coalesced nanostructures, as shown by atomic force microscopy (AFM). Kafirin polymerization of glutaraldehyde-treated microparticles was not by disulfide bonding, and the nanostructures, as revealed by AFM, were spindle shaped. Both treatments enhanced BMP-2 binding to the microparticles, probably due to their increased size. Thus, these modified kafirin microparticles have potential as natural, nonanimal protein bioactive scaffolds.
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Affiliation(s)
- Joseph O Anyango
- Institute for Food, Nutrition and Well-being and Department of Food Science, University of Pretoria , Private Bag X20, Hatfield 0028, South Africa
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