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Wang X, Zhao M, Shang P, Liu J, Zhao R. Effect of Microwave Treatment on Protease Activity, Dough Properties and Protein Quality in Sprouted Wheat. Foods 2024; 13:1277. [PMID: 38672949 PMCID: PMC11049177 DOI: 10.3390/foods13081277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 04/13/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
In this study, the effects of microwave treatment on protease activity, dough properties and protein quality in sprouted wheat were investigated. Microwave treatment led to a significant (p < 0.05) reduction in protease activity in sprouted wheat. Proteases with a pH optimum of 4.4 (cysteine proteinases) were more susceptible to microwave heating, which contributed mostly to protease inactivation. Significant improvements (p < 0.05) in the dough properties and gluten quality of sprouted wheat were observed, which are probably attributable to the synergistic effectiveness of protease inactivation and heat-induced gluten cross-linking. After microwave treatment, the decrease in the solubility and extractability of protein in sprouted wheat indicated protein polymerization, which was induced by intermolecular disulfide bond cross-linking. The changes in gliadin were less pronounced due to the relatively low temperature of the microwave treatment. The cross-linking in sprouted wheat that occurred after microwave treatment seemed to mainly involve glutenin, especially B/C low-molecular-weight glutenin subunits (B/C-LMW-GSs) in the range of 30-50 kD.
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Affiliation(s)
- Xiangyu Wang
- National Engineering Research Center of Wheat and Corn Further Processing, Henan University of Technology, Zhengzhou 450001, China
- College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China
- Food Laboratory of Zhongyuan, Luohe 462300, China
| | - Mengyuan Zhao
- National Engineering Research Center of Wheat and Corn Further Processing, Henan University of Technology, Zhengzhou 450001, China
- College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China
| | - Panpan Shang
- National Engineering Research Center of Wheat and Corn Further Processing, Henan University of Technology, Zhengzhou 450001, China
- College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China
| | - Jing Liu
- National Engineering Research Center of Wheat and Corn Further Processing, Henan University of Technology, Zhengzhou 450001, China
- College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China
| | - Renyong Zhao
- National Engineering Research Center of Wheat and Corn Further Processing, Henan University of Technology, Zhengzhou 450001, China
- College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China
- Food Laboratory of Zhongyuan, Luohe 462300, China
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Mendoza-Pérez RJ, Náthia-Neves G, Blanco B, Vela AJ, Caballero PA, Ronda F. Physicochemical Characterisation of Seeds, Oil and Defatted Cake of Three Hempseed Varieties Cultivated in Spain. Foods 2024; 13:531. [PMID: 38397508 PMCID: PMC10888170 DOI: 10.3390/foods13040531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
The increasing use of hempseed in food products highlights the need for a comprehensive database for scientific research and industrial applications. In food development, information about the techno-functional properties of raw materials plays a crucial role in determining the suitability of each product for specific applications. Thus, this study aims to characterise three hempseed varieties (Ferimon, Henola and Uso-31), comparing their physicochemical and nutritional compositions. Moreover, the study investigates the impact of hempseed varieties on the techno-functional, physical and thermal properties of the partially defatted hempseed flours (PDHFs) obtained from single screw pressing (SSP) oil extraction. The fatty acid and tocopherol profiles of the dehulled seeds and oil were also analysed. Significant variations in yield and physical properties were observed among hempseed varieties, influenced by genetics, adaptation to agro-climatic conditions and cultivation systems. Despite its lower yield (kg/ha), Uso-31 exhibited superior 1000-seed weight, dehulling yield and larger mean seed size (1.79 ± 0.02 mm). Hempseed oil was rich in unsaturated fatty acids, particularly linoleic (51.2-53.4 g/100 g oil) and α-linolenic (14.88-18.97 g/100 oil) acids, showing variations in γ- and α-tocopherols depending on the variety. The variety also influenced the least gelation concentration (LGC) and techno-functional properties such as water absorption capacity (WAC), emulsifying activity (EA) and emulsion stability (ES). SDS-PAGE and DSC measurements indicated the presence of 11S and 7S globulin proteins with denaturation temperatures above 87.8 °C. These findings confirm that the studied hempseed flours are valuable techno-functional and nutritional ingredients suitable for sustainable food formulations.
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Affiliation(s)
- Rito J. Mendoza-Pérez
- Department of Agriculture and Forestry Engineering, Food Technology, College of Agricultural and Forestry Engineering, University of Valladolid, 34004 Palencia, Spain; (R.J.M.-P.); (G.N.-N.); (A.J.V.); (F.R.)
- Research Institute on Bioeconomy - BioEcoUVa, PROCEREALtech Group, University of Valladolid, 47011 Valladolid, Spain
| | - Grazielle Náthia-Neves
- Department of Agriculture and Forestry Engineering, Food Technology, College of Agricultural and Forestry Engineering, University of Valladolid, 34004 Palencia, Spain; (R.J.M.-P.); (G.N.-N.); (A.J.V.); (F.R.)
- Research Institute on Bioeconomy - BioEcoUVa, PROCEREALtech Group, University of Valladolid, 47011 Valladolid, Spain
| | - Beatriz Blanco
- Chemical Engineering Section, Department of Biotechnology and Food Science, Faculty of Sciences, University of Burgos, 09001 Burgos, Spain;
| | - Antonio J. Vela
- Department of Agriculture and Forestry Engineering, Food Technology, College of Agricultural and Forestry Engineering, University of Valladolid, 34004 Palencia, Spain; (R.J.M.-P.); (G.N.-N.); (A.J.V.); (F.R.)
- Whistler Center for Carbohydrate Research, Department of Food Science, Purdue University, West Lafayette, IN 47907-2053, USA
| | - Pedro A. Caballero
- Department of Agriculture and Forestry Engineering, Food Technology, College of Agricultural and Forestry Engineering, University of Valladolid, 34004 Palencia, Spain; (R.J.M.-P.); (G.N.-N.); (A.J.V.); (F.R.)
- Research Institute on Bioeconomy - BioEcoUVa, PROCEREALtech Group, University of Valladolid, 47011 Valladolid, Spain
| | - Felicidad Ronda
- Department of Agriculture and Forestry Engineering, Food Technology, College of Agricultural and Forestry Engineering, University of Valladolid, 34004 Palencia, Spain; (R.J.M.-P.); (G.N.-N.); (A.J.V.); (F.R.)
- Research Institute on Bioeconomy - BioEcoUVa, PROCEREALtech Group, University of Valladolid, 47011 Valladolid, Spain
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Mao S, Zhou Y, Song B, Wu Y, Wang Y, Wang Y, Liu Y, Xu X, Zhao C, Liu J. Effect of Microwave Intermittent Drying on the Structural and Functional Properties of Zein in Corn Kernels. Foods 2024; 13:207. [PMID: 38254508 PMCID: PMC10814094 DOI: 10.3390/foods13020207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/06/2024] [Accepted: 01/07/2024] [Indexed: 01/24/2024] Open
Abstract
Microwave intermittent drying was carried out on newly harvested corn kernels to study the effects of different microwave intermittent powers (900 W, 1800 W, 2700 W, and 3600 W) on the structural and functional properties of zein in corn kernels. The results showed that microwave drying could increase the thermal stability of zein in corn kernels. The solubility, emulsification activity index, and surface hydrophobicity increased under 1800 W drying power, which was due to the unfolding of the molecular structure caused by the increase in the content of irregular structure and the decrease in the value of particle size. At a drying power of 2700 W, there was a significant increase in grain size values and β-sheet structure. This proves that at this time, the corn proteins in the kernels were subjected to the thermal effect generated by the higher microwave power, which simultaneously caused cross-linking and aggregation within the proteins to form molecular aggregates. The solubility, surface hydrophobicity, and other functional properties were reduced, while the emulsification stability was enhanced by the aggregates. The results of the study can provide a reference for the in-depth study of intermittent corn microwave drying on a wide range of applications of zein in corn kernels.
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Affiliation(s)
- Sining Mao
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.M.); (Y.Z.); (B.S.); (Y.W.); (Y.W.); (Y.L.); (X.X.); (C.Z.)
| | - Yuhan Zhou
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.M.); (Y.Z.); (B.S.); (Y.W.); (Y.W.); (Y.L.); (X.X.); (C.Z.)
| | - Bin Song
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.M.); (Y.Z.); (B.S.); (Y.W.); (Y.W.); (Y.L.); (X.X.); (C.Z.)
| | - Yuzhu Wu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.M.); (Y.Z.); (B.S.); (Y.W.); (Y.W.); (Y.L.); (X.X.); (C.Z.)
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Yu Wang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.M.); (Y.Z.); (B.S.); (Y.W.); (Y.W.); (Y.L.); (X.X.); (C.Z.)
| | - Yiran Wang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.M.); (Y.Z.); (B.S.); (Y.W.); (Y.W.); (Y.L.); (X.X.); (C.Z.)
| | - Yanjia Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.M.); (Y.Z.); (B.S.); (Y.W.); (Y.W.); (Y.L.); (X.X.); (C.Z.)
| | - Xiuying Xu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.M.); (Y.Z.); (B.S.); (Y.W.); (Y.W.); (Y.L.); (X.X.); (C.Z.)
| | - Chengbin Zhao
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (S.M.); (Y.Z.); (B.S.); (Y.W.); (Y.W.); (Y.L.); (X.X.); (C.Z.)
| | - Jingsheng Liu
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
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