Food Structure-Netherlands最新文献

{"title":"Dynamic in situ microstructure evaluation of cheese melting: Understanding structure-rheological relationships under controlled temperature sweeps","authors":"Gaurav Kr Deshwal ,&nbsp;Mark Fenelon ,&nbsp;Thom Huppertz ,&nbsp;Laura G. Gómez-Mascaraque","doi":"10.1016/j.foostr.2023.100362","DOIUrl":"10.1016/j.foostr.2023.100362","url":null,"abstract":"<div><p>This study assessed the changes in processed and natural cheese during heating from 5 to 95 °C, at 2 °C per min, using confocal laser scanning microscopy (CLSM), Raman micro-spectroscopy and rheological analysis. The CLSM images showed that the cheese samples varied in fat droplet size and distribution. CLSM micrographs of processed cheese with lower fat content (&lt;10%) showed no substantial structural changes during heating, which were consistent with the absence of cross-over in temperature rheology sweep curves. Cheese containing starch showed uniformly distributed fat and cohesive protein network, leading to reduced cheese flow. At temperatures &gt; 70 °C, cheeses with a fat content ≥ 25% showed greater coalescence of fat globules, which finally merged into large fat pools. The results of this study demonstrate the potential of dynamic in situ CLSM and rheological analysis for evaluating the changes in cheese matrices during heating. The Raman spectral region corresponding to C-H stretching vibrations (2800–3000 cm^-1) could be used to track fat melting in cheese samples with minimum 10% fat.</p></div>","PeriodicalId":48640,"journal":{"name":"Food Structure-Netherlands","volume":"39 ","pages":"Article 100362"},"PeriodicalIF":4.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213329123000552/pdfft?md5=320a2dd1b18f0ecd1d16f8fcdaf7daa5&pid=1-s2.0-S2213329123000552-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139070569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multifractal analysis of meat-analog based coated fried foods texture profile","authors":"Md. Hafizur Rahman Bhuiyan,&nbsp;Nushrat Yeasmen,&nbsp;Michael O. Ngadi","doi":"10.1016/j.foostr.2023.100363","DOIUrl":"10.1016/j.foostr.2023.100363","url":null,"abstract":"<div><p>Texture profile of meat-analog (MA) based fried food products is a complex structure, and rarely studied subject. MA-based fried products mechanical-texture-profile were considered as “fractal geometry” to characterize their textural properties by employing complex statistical approach namely multifractal analysis (MFA). Wheat and rice flour-based batter systems were used to coat the MA, and were fried (at 180 °C) for 2, 4, and 6 min in canola oil. Instrumental puncture test was employed to get mechanical-texture-profile of MA-based fried products and obtained profile was evaluated by MFA. Results revealed that batter-formulation and frying time (FT) impacts the evolution of textural attributes (hardness, brittleness, crispiness), moisture-fat profile and microstructural properties of MA-based coated fried product. The MFA outcomes (Singularity spectra &amp; Rényi spectra) depicts that breakage structure (force distribution) of studied MA-based fried products are non-homogeneous and possesses multifractal scaling behavior. Higher heterogeneity of force distribution is observed in lower concentration of force at outer-crust region compared to inner-core region of coated MA. Heterogeneity of force distribution are positively correlated with FT. Batter-formulation showed substantial impact on texture-profile of MA-based coated fried products and consequently influenced the obtained multifractal parameters. Principal component analysis (PCA) reveals varying extent of correlation between moisture-fat, textural attribute, microporosity and selected multifractal parameters (Δα, Δfα, R-L, ΔD) of fried MA.</p></div><div><h3>Industrial relevance</h3><p>Complex structural pattern of batter coated fried meat-analog (MA)s mechanical texture profile have been successfully and statistically characterized by employing multifractal analysis. This study unraveled the interdependencies among batter-formulation, frying process, mass-profile, microstructure, textural attributes and multifractal parameters. Findings of this study could be used to customize textural attributes of the low fat-containing fried foods. Overall, this work will serve as a ground for designing the production process of emerging MA-based batter-coated fried product.</p></div>","PeriodicalId":48640,"journal":{"name":"Food Structure-Netherlands","volume":"39 ","pages":"Article 100363"},"PeriodicalIF":4.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139070563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dough rheology and internal structure of bread produced with wheat flour partially substituted by buckwheat flour: A step towards enhancing nutritional value","authors":"Bárbara Biduski ,&nbsp;Mariana Maçãs ,&nbsp;Nooshin Vahedikia ,&nbsp;Paula M. O’Connor ,&nbsp;Karen Hussey ,&nbsp;Jeremy C. Simpson ,&nbsp;Margaritha M. Mysior ,&nbsp;Eimear Gallagher","doi":"10.1016/j.foostr.2023.100364","DOIUrl":"10.1016/j.foostr.2023.100364","url":null,"abstract":"<div><p><span>Buckwheat flour is a pseudocereal that can be used to improve the </span>nutritional value<span><span><span> of staple food, such as bread. However, substituting wheat flour can be challenging due to potential loss of the final product's technological quality. Therefore, understanding the influence of </span>buckwheat<span> inclusion level on dough rheology and bread quality is essential. This study evaluated the effect of wheat flour substituted by buckwheat flour on dough rheology and bread quality over the staling process. Wheat flour was replaced by 0%, 10%, 20% and 30% of buckwheat flour and the resulting dough mixing properties, viscosity profile, gel texture, rheology behaviour and extensibility properties were analysed. Internal bread structure (C-Cell and confocal microscopy), specific volume, density and crumb texture profile were also assessed. The increase in buckwheat level gradually decreased flour water absorption (p &lt; 0.05), dough stability and development time, with increased gluten weakening as evidenced by decreased C2 values (protein strength) of Mixolab. As a result, the dough was less resistant to extension, with decreased extensibility. The highest viscosity profile of the starch paste was observed with 30% buckwheat inclusion level, which may lead to faster bread staling process. A solid-like and elastic behaviour was observed in the rheology evaluation, suggesting an interaction between fibre and starch from buckwheat with gluten proteins. Although changes in dough rheology occurred, the bread quality remained unchanged at levels of up to 20% buckwheat level (p &gt; 0.05), with similar specific volume, density, internal structure and texture profile compared to the control bread (0% buckwheat). In conclusion, buckwheat was found to be a viable wheat flour substitute with only minimal changes in dough behaviour and maintenance of bread technological quality, while enhancing the </span></span>nutritional profile<span> by increasing fibre content and total essential amino acid.</span></span></p></div>","PeriodicalId":48640,"journal":{"name":"Food Structure-Netherlands","volume":"39 ","pages":"Article 100364"},"PeriodicalIF":4.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139070852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interdisciplinary methods for analysing food matrix structures of hybrid cell-based meats: a review","authors":"Olivia J. Ogilvie ,&nbsp;Rachel Z. Bennie ,&nbsp;Hamish J.F. Trlin ,&nbsp;Larry Sai Weng Loo ,&nbsp;Hanzhang Zhou ,&nbsp;Ang Jin ,&nbsp;Jin Kyo Oh ,&nbsp;Renwick C.J. Dobson ,&nbsp;Hanry Yu ,&nbsp;Laura J. Domigan","doi":"10.1016/j.foostr.2023.100361","DOIUrl":"10.1016/j.foostr.2023.100361","url":null,"abstract":"<div><p>Hybrid cell-based meats consisting of in vitro cultured animal cells within non-animal protein matrices pose a challenge in achieving sensory equivalence to conventional meats. The relationship between food matrix structure and functionality is crucial for designing desirable hybrid cell-based meats. Understanding individual food matrices and their interactions is crucial for achieving desired organoleptic properties in hybrid cell-based food systems. This work critically reviews current techniques used to study multiscale food matrix structures in animal-origin meats and plant-based meats and considers their application in the engineering of hybrid cell-based meat food matrices. Currently, research focusses on cell-line development, media composition, tissue functionality, and food matrix properties of scaffolds, hydrogels, and non-animal derived proteins to use in hybrid cell-based meat products. However, the interactions between plant-protein and animal-origin cells within hybrid cell-based meats have not been studied but are key to forming novel overall food matrices. We will need to adapt techniques from adjacent fields to characterise and achieve sensory equivalence of animal-origin meat products. This review aims to serve as a guide for current and emerging techniques being used to study the food matrix structure of hybrid foods to improve their organoleptic properties and mimic animal-origin meats.</p></div>","PeriodicalId":48640,"journal":{"name":"Food Structure-Netherlands","volume":"39 ","pages":"Article 100361"},"PeriodicalIF":4.7,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213329123000540/pdfft?md5=cfd290ef03c6c2d7e9d8afa25ccdca38&pid=1-s2.0-S2213329123000540-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139070902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanistic understanding of the effects of nanoliposome-soybean protein isolate interactions on soybean protein isolate emulsifying properties","authors":"Yu Xiao ,&nbsp;Min-hsiung Pan ,&nbsp;Yi-shiou Chiou ,&nbsp;Zhenshun Li ,&nbsp;Shudong Wei ,&nbsp;Xiaoli Yin ,&nbsp;Baomiao Ding","doi":"10.1016/j.foostr.2023.100357","DOIUrl":"https://doi.org/10.1016/j.foostr.2023.100357","url":null,"abstract":"<div><p><span>The purpose of this study was to reveal the mechanism of the improvement of SPI emulsifying properties after complexation with NL. The binding between NL and SPI led to a static fluorescence quenching of SPI and the significant change of SPI FTIR spectra. It indicated that the advanced structure of SPI after interaction with NL was altered appreciably. Moreover, it was observed that the free sulfhydryl content, contact angle, particle size, zeta potential, and surface hydrophobicity of SPI after complexation increased, and the interfacial tension reduced. Hydrophobic forces and hydrogen bonds played a vital part in the interaction between NL and SPI. Furthermore, the emulsifying properties of SPI were significantly improved after complexation with NL. Emulsifying activity index (EAI) and emulsifying stability index (ESI) of SPI increased from 50.52 to 104.28 m</span>²/g and from 17.30 to 25.10 min with the NL-to-SPI mass ratio increasing from 0:1–1:1, respectively. Meanwhile, the emulsifying properties of NL-SPI (the NL-to-SPI mass ratio at 1:1) were also influenced by environmental factors (pH, temperature, and ionic strength). The improvement of the emulsifying properties of SPI after interaction with NL derived from the alteration of advanced structure and surface characteristics of NL-SPI complexes.</p></div>","PeriodicalId":48640,"journal":{"name":"Food Structure-Netherlands","volume":"39 ","pages":"Article 100357"},"PeriodicalIF":4.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138474178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantitative image analysis of influence of polysaccharides on protein network formation in GDL-acidified milk gels","authors":"Mariska Brüls ,&nbsp;Sanam Foroutanparsa ,&nbsp;Théo Merland ,&nbsp;C. Elizabeth P. Maljaars ,&nbsp;Maurien M.A. Olsthoorn ,&nbsp;Roderick P. Tas ,&nbsp;Ilja K. Voets","doi":"10.1016/j.foostr.2023.100352","DOIUrl":"https://doi.org/10.1016/j.foostr.2023.100352","url":null,"abstract":"<div><p>Exopolysaccharides (EPS) are commonly used to improve the texture of yogurt. These polysaccharides interact with casein micelles, the major protein in milk, via electrostatic and depletion mechanisms during fermentation by lactic acid bacteria (LAB). However, the relationship between the physicochemical properties and monosaccharide composition of EPS and their impact on yogurt texture is not yet fully understood. To address this knowledge gap, we studied the effects of polysaccharides commonly used as food additives on acid-induced milk protein networks. Confocal laser scanning microscopy (CLSM) was used to image the network microstructures. Image analysis, including Fourier transform, autocorrelation, and binarization-based techniques, was applied to quantify key structural features of the mixed milk protein/polysaccharide gels. These parameters were then related to the macroscopic properties of the model food matrices, such as elastic and viscous moduli and yield point. We found that the addition of neutral polysaccharides resulted in a concentration-dependent increase in structure factor, protein domain size, and pore fraction. In contrast, the presence of charged polysaccharides led to an increase in protein domain size, a decrease in pore fraction, and a decrease in elastic and viscous moduli. These results demonstrate the use of a quantitative image analysis method for selecting LAB with favorable EPS properties to improve yogurt texture.</p></div>","PeriodicalId":48640,"journal":{"name":"Food Structure-Netherlands","volume":"38 ","pages":"Article 100352"},"PeriodicalIF":4.7,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50204223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A study of the milling process of Irish-grown peas: NIR spectroscopy, flour pasting properties and dough rheology","authors":"Mariana Maçãs ,&nbsp;Alessandro Ferragina ,&nbsp;Bárbara Biduski ,&nbsp;Karen Hussey ,&nbsp;Nooshin Vahedikia ,&nbsp;Elke Arendt ,&nbsp;Eimear Gallagher","doi":"10.1016/j.foostr.2023.100351","DOIUrl":"https://doi.org/10.1016/j.foostr.2023.100351","url":null,"abstract":"<div><p><span>Peas contain valuable macronutrients, such as protein and dietary fibre, associated with health benefits. Blending pea flour (PF) with wheat flour (WT) can improve the nutritional profile of bakery products. In addition, the use of locally grown peas for food innovation activities can benefit the environment and the local economy. However, the pea milling process is of paramount importance and can affect the final flour quality. This study aims to evaluate the influence of different milling processes of Irish-grown peas on flour composition, spectral profile (Near Infrared - NIR), pasting properties and dough rheology. Three mills were used: roller (RM), hammer (HM) and cutting (CM) producing RM, HM and CM flours, respectively. A commercial strong wheat flour was used as the base flour. For producing doughs, wheat flour was blended with each pea flour at a 15:85 (pea: wheat). Flour composition, particle size, Scanning Electron Microscopy (SEM), dough mixing properties, viscosity profile, gel texture, dough extensibility and rheology were assessed for the control, all pea flours and flour blends. The hammer mill produced the highest yield of pea flour (93.9 %). </span>Near Infrared Spectroscopy<span> reflected the same results for proximate composition, and the PCA and was able to discriminate the main differences between flour samples. SEM demonstrated that higher particle sizes obtained from the CM tended to have larger starch and protein matrix aggregates. Pea flour from the RM presented the highest viscosity profile and hardness, most likely due to the higher starch and lower total dietary fibre content. The lower pasting viscosity profile of pea flour obtained from CM is most likely due to a high level of damaged starch present in this flour. There were no significant differences found among WT and flour blends for gel hardness. This may imply that the incorporation of 15 % HM and CM flours perhaps will not impact the staling process of the final bread products. Further research is being undertaken to examine the influence of the pea milling process on bread-making performance.</span></p></div>","PeriodicalId":48640,"journal":{"name":"Food Structure-Netherlands","volume":"38 ","pages":"Article 100351"},"PeriodicalIF":4.7,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50204225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of pH, NaCl and CaCl2 salts on Solubility, Zeta Potential and air - water interfacial properties of the protein isolate from lupin seeds","authors":"Richard Marins da Silva,&nbsp;Márcia Cristina Teixeira Ribeiro Vidigal,&nbsp;Valéria Paula Rodrigues Minim,&nbsp;Luis Antonio Minim","doi":"10.1016/j.foostr.2023.100350","DOIUrl":"10.1016/j.foostr.2023.100350","url":null,"abstract":"<div><p><span>Lupin is a legume seed rich in proteins and presents high nutritional and health benefits but is little used in the human diet. In this work, lupin proteins were extracted using an alkaline-saline solution followed by dialysis. Then, globulins were separated by isoelectric precipitation to give lupin globulin isolate (LGI). The solubility, zeta potential and interfacial properties of LGI were evaluated at pH of 3.4 and 6.8 in the presence of NaCl or CaCl</span>₂. The solubility of LGI was dependent on the pH and type of salt, with lower solubility in the isoelectric region (pH ∼ 5), with lower solubility in the presence of NaCl (42.81 ± 1.23 %). The lowest value of interfacial tension was at pH 3.4 and absence of salts (41.79 ± 0.63 mN m⁻¹). Indicating the type of salt changes the electrostatic shielding of the LGI electrical double layer, which leads to a decrease in electrostatic potential at the surface of LGI. The rate of diffusion is highest at pH 6.8 under conditions without salts or in the presence of NaCl (0.57 ± 0.01 and 0.55 ± 0.05 mN m⁻¹ s^−0.5 respectively). When the salt was changed to CaCl₂<span> diffusion was decreased, probably due to protein-protein interactions. On the other hand, the protein adsorption rate is lower at pH 6.8 under all conditions studied. Apparently, it is influenced by the type of surface electrical charge of the proteins and the rate of rearrangement is greater than the rate of adsorption. The results obtained demonstrate that the lupin protein isolate can be used in multiphase food systems, such as foams, due to its interfacial properties.</span></p></div>","PeriodicalId":48640,"journal":{"name":"Food Structure-Netherlands","volume":"38 ","pages":"Article 100350"},"PeriodicalIF":4.7,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43851287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oleogels: Innovative formulations as fat substitutes and bioactive delivery systems in food and beyond","authors":"Ashwini Gengatharan ,&nbsp;Nur Vaizura Mohamad ,&nbsp;Che Nur Mazadillina Che Zahari ,&nbsp;Ramya Vijayakumar","doi":"10.1016/j.foostr.2023.100356","DOIUrl":"10.1016/j.foostr.2023.100356","url":null,"abstract":"<div><p>Fats and oils<span><span> provide flavour and texture to food while also promoting satiety. Despite the recommendation to consume primarily </span>unsaturated lipid<span> sources, the liquid state of unsaturated lipids at ambient temperature precludes numerous industrial applications. Moreover, the issue of the adverse effects of trans fatty acids has become more apparent due to research demonstrating their association with coronary diseases, obesity, and type 2 diabetes. Oleogels are liquid oils encapsulated within a thermoreversible, three-dimensional gel network using oleogelators such as waxes, monoglycerides, phospholipids<span>, and phytosterols<span>. Oleogels have been used extensively in numerous food formulations to reduce the amount of saturated and trans fatty acids. In recent decades, oleogel research has been active, producing numerous oleogels with desirable characteristics such as thermal resistance, texture, and structural stability. In addition, oleogels have been incorporated into several food matrices. In some instances, oleogels in these food products resemble the textural characteristics of products made with conventional hardstock fat, improve dietary nutrition, exhibit high physical and oxidative stability, and have a high oil-binding capacity. These advancements demonstrate the potential of oleogels, but certain disadvantages and a lack of in-depth information on various aspects have delayed their commercialization in the food industry. This narrative review aims to outline the preparation of oleogels, their application in selected food products, their digestibility, other applications of oleogels, such as bioactive delivery in wound healing and antibacterial properties, and the existing challenges in exploring oleogels. Therefore, the content presented in this article offers insights and opportunities for broadening the range of potential uses of oleogels in the food industry and beyond.</span></span></span></span></p></div>","PeriodicalId":48640,"journal":{"name":"Food Structure-Netherlands","volume":"38 ","pages":"Article 100356"},"PeriodicalIF":4.7,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135410386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Food nanostructuring of paprika capsules obtained by coacervation for improving carotenoid storage stability","authors":"E. Flores-Andrade ,&nbsp;M. Jiménez-Fernández ,&nbsp;C.I. Beristain ,&nbsp;E. Azuara ,&nbsp;G.F. Gutiérrez-López ,&nbsp;L. Alamilla-Beltrán ,&nbsp;L.A. Pascual-Pineda","doi":"10.1016/j.foostr.2023.100354","DOIUrl":"https://doi.org/10.1016/j.foostr.2023.100354","url":null,"abstract":"<div><p><span>In this study, paprika carotenoids<span><span> were encapsulated by coacervation with a nanostructured material (NE) prepared with alginate/zeolite and another non-nanostructured (AA) made only with alginate to study the effect of nanocavities in the microstructure on the energy interactions of adsorbed water and the chemical stability of carotenoids. Capsules were characterized through fractal analysis of image, water </span>sorption<span> isotherms, water melting point, thermodynamic properties, and chemical stability during storage. Surface fractal dimensions were between 2.75 and 2.8 for NE and were larger than those obtained for AA, which were between 2.57 and 2.7. NE capsules showed the endothermic fusion peak at −4.42 °C, while AA capsules around 0.97 °C. Adsorbed water enthalpies calculated from adsorption isotherms of the capsules showed the maximum stability of total carotenoids at the crossing of the integral and differential enthalpy intercross </span></span></span>₍<span><math><msub><mrow><mi>a</mi></mrow><mrow><mi>w</mi></mrow></msub></math></span><span> = 0.121 for AA and 0.443 for NE) and at the water adsorption at Langmuir-type primary sites. NE capsules improved carotenoid retention two-fold compared to AA after 63 days of storage. These results confirmed that controlling the nanoporous at the food microstructure improved the chemical stability of carotenoids during storage.</span></p></div>","PeriodicalId":48640,"journal":{"name":"Food Structure-Netherlands","volume":"38 ","pages":"Article 100354"},"PeriodicalIF":4.7,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91992728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}