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Rakha A, Foucat L, Saulnier L, Bonnin E. Behavior of endo-xylanases on wheat milling products in relation with variable solid loading conditions. Carbohydr Polym 2024; 334:122029. [PMID: 38553229 DOI: 10.1016/j.carbpol.2024.122029] [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: 12/19/2023] [Revised: 03/04/2024] [Accepted: 03/05/2024] [Indexed: 04/02/2024]
Abstract
To investigate the incubation conditions encountered by enzymes in cereal-based product transformation processes, this study aims to provide comprehensive information on the effect of low (18 %) to high (72 %) solid loading on the behavior of bacterial and fungal xylanases towards wheat grain fractions, i.e. white flour, ground whole grain and bran. Both enzymes are effective from 30 % water content. A water content of 50 % appears as the threshold for optimal arabinoxylan solubilisation. The specificity of enzymes was influenced by low hydration conditions, particularly in wheat bran, which contains arabinoxylan with diverse structures. Especially the bacterial xylanase became more tolerant to arabinose substitution as the water content decreased. Time Domain-NMR measurements revealed four water mobility domains in all the fractions. The water populations corresponding to 7.5 nm to 15 nm pores were found to be the most restrictive for enzyme activity. These results define the water content limits for the optimal xylanase action in cereal products.
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Affiliation(s)
- Allah Rakha
- INRAE, UR 1268 BIA, Biopolymers Interactions Assemblies, F-44316 Nantes, France.
| | - Loïc Foucat
- INRAE, UR 1268 BIA, Biopolymers Interactions Assemblies, F-44316 Nantes, France; INRAE, BIBS Facility, PROBE Infrastructure, F-44316 Nantes, France.
| | - Luc Saulnier
- INRAE, UR 1268 BIA, Biopolymers Interactions Assemblies, F-44316 Nantes, France.
| | - Estelle Bonnin
- INRAE, UR 1268 BIA, Biopolymers Interactions Assemblies, F-44316 Nantes, France.
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Hermans W, Geisslitz S, De Bondt Y, Langenaeken NA, Scherf KA, Courtin CM. NanoLC-MS/MS protein analysis on laser-microdissected wheat endosperm tissues: A comparison between aleurone, sub-aleurone and inner endosperm. Food Chem 2024; 437:137735. [PMID: 37924757 DOI: 10.1016/j.foodchem.2023.137735] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 09/27/2023] [Accepted: 10/09/2023] [Indexed: 11/06/2023]
Abstract
Wheat kernel proteins are not homogeneously distributed throughout the endosperm. The goal of this study was to investigate the relative differences in protein composition between the aleurone, sub-aleurone and inner endosperm. Using laser microdissection followed by nanoLC-MS/MS, an innovative method combining high spatial specificity and analytical selectivity in sample-limited situations, 780 proteins were detected and classified by function. A higher proportion of gluten proteins was detected in the sub-aleurone than inner endosperm. Composition-wise, gluten from the sub-aleurone is relatively more enriched in ω-gliadins but impoverished in LMW-GS and γ-gliadins. While a basic set of albumins and globulins was detected in all three microdissected endosperm tissues, specific proteins, like puroindoline B, displayed a gradient. This study provides indications that both histological origin and relative positioning of the tissues drive the protein distribution. Knowledge of this protein distribution offers significant opportunities for the wheat manufacturing industry. Data available via ProteomeXchange, identifier PXD038743.
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Affiliation(s)
- Wisse Hermans
- KU Leuven, Department of Microbial and Molecular Systems (M(2)S), Research unit Laboratory of Food Chemistry and Biochemistry, B-3000 Leuven, Belgium.
| | - Sabrina Geisslitz
- Karlsruhe Institute of Technology (KIT), Department of Bioactive and Functional Food Chemistry, Institute of Applied Biosciences, 76131 Karlsruhe, Germany.
| | - Yamina De Bondt
- KU Leuven, Department of Microbial and Molecular Systems (M(2)S), Research unit Laboratory of Food Chemistry and Biochemistry, B-3000 Leuven, Belgium.
| | - Niels A Langenaeken
- KU Leuven, Department of Microbial and Molecular Systems (M(2)S), Research unit Laboratory of Food Chemistry and Biochemistry, B-3000 Leuven, Belgium.
| | - Katharina A Scherf
- Karlsruhe Institute of Technology (KIT), Department of Bioactive and Functional Food Chemistry, Institute of Applied Biosciences, 76131 Karlsruhe, Germany.
| | - Christophe M Courtin
- KU Leuven, Department of Microbial and Molecular Systems (M(2)S), Research unit Laboratory of Food Chemistry and Biochemistry, B-3000 Leuven, Belgium.
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Palombieri S, Bonarrigo M, Cammerata A, Quagliata G, Astolfi S, Lafiandra D, Sestili F, Masci S. Characterization of Triticum turgidum sspp. durum, turanicum, and polonicum grown in Central Italy in relation to technological and nutritional aspects. FRONTIERS IN PLANT SCIENCE 2023; 14:1269212. [PMID: 38126019 PMCID: PMC10731273 DOI: 10.3389/fpls.2023.1269212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 11/21/2023] [Indexed: 12/23/2023]
Abstract
Introduction Wheat is a staple food, with the two most common species being Triticum aestivum and Triticum turgidum ssp. durum. Moreover, the latter, T. turgidum, includes other tetraploid subspecies, among which the sspp. turanicum (Khorasan wheat) and polonicum (Polish wheat), whose importance has increased in the last decades, representing alternative crops for marginal areas, in addition to being a source of genetic diversity. Methods In this work, different accessions of these three subspecies of T. turgidum have been grown in 2 years in the same environment and have been characterized for technological properties and factors affecting nutritional quality, such as fiber amount and the content of micro- and macro-nutrients in grains, and for root morphological traits. Results These analyses allowed the identification, in particular, of a Polish wheat accession showing better technological performances, a higher amount of positive micro- and macro-elements, and a lower amount of toxic cadmium. The modern variety Svevo and the Polish Pol2 showed the lowest and the highest shoot:root ratio, respectively. The high shoot:root ratio in Pol2 was mainly attributable to the decrease in root growth. Although Pol2 had a lower root biomass, its particular root morphology made it more efficient for nutrient uptake, as evident from the greater accumulation of micro- and macro-nutrients. Discussion These results underline that it is not possible to draw general conclusions about the difference between primitive and modern wheats, but rather a case-by-case approach should be chosen.
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Affiliation(s)
- Samuela Palombieri
- Department of Agriculture and Forest Science (DAFNE), University of Tuscia, Viterbo, Italy
| | - Marco Bonarrigo
- Department of Agriculture and Forest Science (DAFNE), University of Tuscia, Viterbo, Italy
| | - Alessandro Cammerata
- Council for Agricultural Research and Economics, Research Centre for Engineering and Agro-Food Processing, Rome, Italy
| | - Giulia Quagliata
- Department of Agriculture and Forest Science (DAFNE), University of Tuscia, Viterbo, Italy
| | - Stefania Astolfi
- Department of Agriculture and Forest Science (DAFNE), University of Tuscia, Viterbo, Italy
| | - Domenico Lafiandra
- Department of Agriculture and Forest Science (DAFNE), University of Tuscia, Viterbo, Italy
| | - Francesco Sestili
- Department of Agriculture and Forest Science (DAFNE), University of Tuscia, Viterbo, Italy
| | - Stefania Masci
- Department of Agriculture and Forest Science (DAFNE), University of Tuscia, Viterbo, Italy
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Hermans W, Busschaert J, De Bondt Y, Langenaeken NA, Courtin CM. The Wheat Starchy Endosperm Protein Gradient as a Function of Cultivar and N-fertilization Is Reflected in Mill Stream Protein Content and Composition. Foods 2023; 12:4192. [PMID: 38231659 DOI: 10.3390/foods12234192] [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: 10/13/2023] [Revised: 11/17/2023] [Accepted: 11/17/2023] [Indexed: 01/19/2024] Open
Abstract
Within the wheat starchy endosperm, the protein content increases biexponentially from the inner to outer endosperm. Here, we studied how this protein gradient is reflected in mill fractions using three cultivars (Claire, Apache, and Akteur) grown without and with N-fertilization (300 kg N ha-1). The increasing protein content in successive break fractions was shown to reflect the protein gradient within the starchy endosperm. The increasing protein content in successive reduction fractions was primarily due to more aleurone contamination and protein-rich material being harder to reduce in particle size. The miller's bran fractions had the highest protein content because of their high sub-aleurone and aleurone content. Additionally, the break fractions were used to deepen our understanding of the protein composition gradient. The gradient in relative gluten content, increasing from inner to outer endosperm, was more pronounced without N-fertilization than with and reached levels up to 87.3%. Regarding the gluten composition gradient, no consistent trends were observed over cultivars when N-fertilization was applied. This could, at least partly, explain why there is no consensus on the gluten composition gradient in the literature. This study aids millers in managing fluctuations in the functionality of specific flour streams, producing specialized flours, and coping with lower-quality wheat.
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Affiliation(s)
- Wisse Hermans
- Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Kasteelpark Arenberg 20, B-3001 Heverlee, Belgium
| | - Justine Busschaert
- Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Kasteelpark Arenberg 20, B-3001 Heverlee, Belgium
| | - Yamina De Bondt
- Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Kasteelpark Arenberg 20, B-3001 Heverlee, Belgium
| | - Niels A Langenaeken
- Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Kasteelpark Arenberg 20, B-3001 Heverlee, Belgium
| | - Christophe M Courtin
- Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Kasteelpark Arenberg 20, B-3001 Heverlee, Belgium
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Xie H, Ying R, Tang Z, Wu C, Huang M. Effects of cereal grain cell wall composition and structure on starch digestion. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023. [PMID: 37185988 DOI: 10.1002/jsfa.12666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 04/17/2023] [Accepted: 04/19/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND Wheat is an important food crop, and its characteristics vary depending on the region of cultivation; different environments have varying effects on the composition of the grains. We previously reported the effects of environmental factors on wheat grain cell wall composition and structure. METHODS The variations in the structure of aleurone cell walls between different wheat samples were examined to determine the effects of aleurone cell walls on grain starch digestion properties. Ten different varieties of wheat grains with different aleurone cell wall structure and composition constituted a simple research system used to study their effect on the starch digestion of bread. RESULTS The aleurone cell wall thickness ranged from 3.05 μm to 4.67 μm, and the arabinose to xylose ration of water-extractable arabinoxylan was 0.79-0.97. With the increase in arabinoxylans content or cell wall thickness, the total digestibility of starch within the bread decreased; this phenomenon may be related to the changes in the interaction between polysaccharides and starch granules in this process. CONCLUSION Our study showed that the wheat cell wall structure has a great impact on starch hydrolysis, indicating that the change in the digestibility of starch in flour and bread may be due to changes in the cell wall structure leading to different combinations, thus affecting digestibility. The present study showed that the cell wall combines the starch granules during the bread-making process; thus, the diffusion of enzymes through the cell wall was hindered. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Hui Xie
- Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Ruifeng Ying
- Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Zhenxing Tang
- College of Culinary Art, Tourism College of Zhejiang, Hangzhou, Zhejiang, China, 311231
| | - Caie Wu
- Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Meigui Huang
- Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, China
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Ying R, Zhou T, Xie H, Huang M. Synergistic effect of arabinoxylan and (1,3)(1,4)-β-glucan reduces the starch hydrolysis rate in wheat flour. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2023.108668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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Selga L, Andersson AA, Moldin A, Andersson R. Determining levels of water-extractable and water-unextractable arabinoxylan in commercial Swedish wheat flours by a high-throughput method. J Cereal Sci 2022. [DOI: 10.1016/j.jcs.2022.103608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Spatial correlation of water distribution and fine structure of arabinoxylans in the developing wheat grain. Carbohydr Polym 2022; 294:119738. [DOI: 10.1016/j.carbpol.2022.119738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/27/2022] [Accepted: 06/12/2022] [Indexed: 11/21/2022]
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9
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Transgenic wheat with increased endosperm lipid – Impacts on grain composition and baking quality. J Cereal Sci 2021. [DOI: 10.1016/j.jcs.2021.103289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Tavoletti S, Pasquini M, Mozzon M, Servadio D, Merletti A, Mannozzi C, Foligni R. Discrimination among varieties of Triticum turgidum subspecies (dicoccon, turanicum and durum) based on the fatty acid profile. J Cereal Sci 2021. [DOI: 10.1016/j.jcs.2021.103213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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