1
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Dong L, Lu X, Zeng XA, Lin S. Regulation of ovalbumin allergenicity and structure-activity relationship analysis based on pulsed electric field technology. Int J Biol Macromol 2024; 261:129695. [PMID: 38280703 DOI: 10.1016/j.ijbiomac.2024.129695] [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: 11/07/2023] [Revised: 01/14/2024] [Accepted: 01/21/2024] [Indexed: 01/29/2024]
Abstract
The study focused on the regulation of ovalbumin (OVA) allergenicity using pulsed electric field (PEF) technology and examined the structure-activity link. Following PEF treatment, the ability of OVA to bind to IgE and IgG1 at 6 kHz was inhibited by 30.41 %. According to the microstructure, PEF caused cracks on the OVA surface. Spectral analysis revealed a blue shift in the amide I band and a decrease in α-helix and β-sheet content indicating that the structure of OVA was unfolded. The disulfide bond conformation was transformed and the structure tended to be disordered. The increased fluorescence intensity indicated that tryptophan and tyrosine were exposed which led an increase in hydrophobicity. In addition, the results of molecular dynamics (MD) simulations confirmed that the stability of OVA was reduced after PEF, which was related to the reduction of hydrogen bonding and the sharp fluctuation of aspartic acid. Therefore, PEF treatment induced the exposure of hydrophobic amino acids and the transformation of disulfide bond configuration which in turn masked or destroyed allergenic epitopes, and ultimately inhibited OVA allergenicity. This study provided insightful information for the production of hypoallergenic eggs and promoted the use of PEF techniques in the food field.
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Affiliation(s)
- Liu Dong
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China; Engineering Research Center of Special Dietary Food of Liaoning Province, Food Engineering Technology Research Center of Liaoning Province, Dalian 116034, PR China
| | - Xinqing Lu
- Dalian Dingtong Technology Development Co., Ltd., Dalian 116081, PR China
| | - Xin-An Zeng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, PR China
| | - Songyi Lin
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China; Engineering Research Center of Special Dietary Food of Liaoning Province, Food Engineering Technology Research Center of Liaoning Province, Dalian 116034, PR China.
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2
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Wang S, Guo Y, Zhu X, Xie D, Wang Z. Effects of the Roasting-Assisted Aqueous Ethanol Extraction of Peanut Oil on the Structure and Functional Properties of Dreg Proteins. Foods 2024; 13:758. [PMID: 38472872 DOI: 10.3390/foods13050758] [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: 01/24/2024] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
The effects of the roasting-assisted aqueous ethanol extraction of peanut oil on the structure and functional properties of dreg proteins were investigated to interpret the high free oil yield and provide a basis for the full utilization of peanut protein resources. The roasting-assisted aqueous ethanol extraction of peanut oil obtained a free oil yield of 97.74% and a protein retention rate of 75.80% in the dreg. The water-holding capacity of dreg proteins increased significantly, and the oil-holding capacity and surface hydrophobicity decreased significantly, reducing the binding ability with oil and thus facilitating the release of oil. Although the relative crystallinity and denaturation enthalpy of the dreg proteins decreased slightly, the denaturation temperatures remained unchanged. Infrared and Raman spectra identified decreases in the C-H stretching vibration, Fermi resonance and α-helix, and increases in random coil, β-sheet and β-turn, showing a slight decrease in the overall ordering of proteins. After the roasting treatment, 62.57-135.33% of the protein functional properties were still preserved. Therefore, the roasting-assisted aqueous ethanol extraction of peanut oil is beneficial for fully utilizing the oil and protein resources in peanuts.
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Affiliation(s)
- Sicheng Wang
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu 241000, China
| | - Yubao Guo
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu 241000, China
| | - Xiuling Zhu
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu 241000, China
| | - Dan Xie
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu 241000, China
| | - Zhenzhen Wang
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu 241000, China
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3
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Wang H, Chen L, Wu S, Jin W, Shen W, Hu Z, Huang W, Liu G. Improve stability and application of rice oil bodies via surface modification with ferulic acid, (-)-epicatechin, and phytic acid. Food Chem 2023; 409:135274. [PMID: 36586252 DOI: 10.1016/j.foodchem.2022.135274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/06/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Rice bran oil bodies (RBOBs) are one of the most exploited functional components from rice bran by-products and are predominantly based on oleosin stabilization. In this study, we explored the effects of different concentrations of added (-)-epicatechin, ferulic acid, and phytic acid on the RBOBs stability. The results revealed that the incorporation of all three natural phytoconstituents could reduce the RBOBs particle size and increase emulsifying properties, demonstrating increasing surface hydrophobicity (p < 0.05), and a good antioxidant effect, which was especially obvious with (-)-epicatechin incorporation. Fourier transform infrared (FT-IR) spectroscopy data demonstrated that these three small molecule substance classes can modify with oleosin on RBOBs surface by covalent and noncovalent effects. Raman spectroscopic analysis illustrated that the vibrational modes of disulphide bonds in oleosin were modified by these three plant natural ingredients. The interactions between the three phytoconstituents and the model protein were investigated by molecular docking experiments.
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Affiliation(s)
- Han Wang
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 30023, Hubei, PR China
| | - Lu Chen
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 30023, Hubei, PR China
| | - Shuang Wu
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 30023, Hubei, PR China
| | - Weiping Jin
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 30023, Hubei, PR China; Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, Hubei, PR China; Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan 430023, Hubei, PR China
| | - Wangyang Shen
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 30023, Hubei, PR China; Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, Hubei, PR China; Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan 430023, Hubei, PR China
| | - Zhongze Hu
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 30023, Hubei, PR China; Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, Hubei, PR China; Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan 430023, Hubei, PR China
| | - Wenjing Huang
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 30023, Hubei, PR China; Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, Hubei, PR China; Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan 430023, Hubei, PR China.
| | - Gang Liu
- Pharmacy Department, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, PR China.
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4
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de Oliveira JP, Burgos-Flórez F, Sampaio I, Villalba P, Zucolotto V. Label-free electrochemical immunosensor for Ochratoxin a detection in coffee samples. Talanta 2023; 260:124586. [PMID: 37105083 DOI: 10.1016/j.talanta.2023.124586] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 04/17/2023] [Accepted: 04/21/2023] [Indexed: 04/29/2023]
Abstract
Ochratoxin A (OTA) is a nephrotoxic and carcinogenic mycotoxin frequently found in coffee, which directly impacts human health and the economy of many countries. For this reason, there has been a growing need for simple and sensitive tools for the on-site detection of this mycotoxin. In this study, we developed a label-free impedimetric immunosensor to detect OTA. The biosensor was built on a thin-film gold electrode evaporated on glass substrtes, modified with a self-assembled cysteamine monolayer and anti-OTA antibodies. Atomic force microscopy and Microspectroscopy RAMAN confirmed the successful functionalization of the electrodes. The biosensor performance was evaluated by electrochemical impedance spectroscopy and the measurements indicated a linear relationship between the change in the impedance values and the OTA concentration in the range from 0.5 to 100 ng mL-1 with a limit of detection of 0.15 ng mL-1. The biosensor was highly selective and did not suffer matrix interference when analyzed in coffee samples. Furthermore, considering the small sample volumes, the short time required for analysis, and the possibility of miniaturization, the developed biosensor represents a promising analytical device for on-site coffee quality analyses.
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Affiliation(s)
- Jairo Pinto de Oliveira
- Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo, CP 369, 13560-970, São Carlos, SP, Brazil; Federal University of Espírito Santo, Av Marechal Campos 1468, Vitória, ES 29.040-090, Brazil.
| | - Francisco Burgos-Flórez
- Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo, CP 369, 13560-970, São Carlos, SP, Brazil; Health and Technological Innovation, Universidad Simón Bolívar, Facultad de Ingenierías, Barranquilla, 080002, Colombia
| | - Isabella Sampaio
- Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo, CP 369, 13560-970, São Carlos, SP, Brazil
| | - Pedro Villalba
- Department of Medicine, Health Division, Universidad Del Norte, Barranquilla, 081007, Colombia
| | - Valtencir Zucolotto
- Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo, CP 369, 13560-970, São Carlos, SP, Brazil
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5
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Ke C, Li L. Influence mechanism of polysaccharides induced Maillard reaction on plant proteins structure and functional properties: A review. Carbohydr Polym 2023; 302:120430. [PMID: 36604091 DOI: 10.1016/j.carbpol.2022.120430] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/18/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022]
Abstract
Plant proteins have high nutritional value, a wide range of sources and low cost. However, it is easily affected by the environmental factors of processing and lead the problem of poor functionality. These problems of plant proteins can be improved by the polysaccharides induced Maillard reaction. The interaction between proteins and polysaccharides through Maillard reaction can change the structure of proteins as well as improve the functional properties and biological activity. The products of Maillard reaction, such as reductone intermediates, heterocyclic compounds and melanoidins have certain antioxidant, antibacterial and other biological activities. However, heterocyclic amines, acrylamide, and products generated in the advanced stage of the Maillard reaction also have a negative impact, which may increase cytotoxicity and be associated with chronic diseases. Therefore, it is necessary to effectively control the process of Maillard reaction. This review focuses on the modification of plant proteins by polysaccharide-induced Maillard reaction and the effects of Maillard reaction on protein structure, functional properties and biological activity. It also points out how to accurately reflect the changes of protein structure in Maillard reaction. In addition, it also points out the application ways of plant protein-polysaccharide complexes in the food industry, for example, emulsifiers, delivery carriers of functional substances, and natural antioxidants due to their improved solubility, emulsifying, gelling and antioxidant properties. This review provides theoretical support for controlling Maillard reaction based on protein structure.
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Affiliation(s)
- Chuxin Ke
- College of Food Science, Northeast Agricultural University, Harbin, 150030, China
| | - Liang Li
- College of Food Science, Northeast Agricultural University, Harbin, 150030, China.
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6
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Evaluation of a Raman Chemometric Method for Detecting Protein Structural Conformational Changes in Solution. J Pharm Sci 2023; 112:573-586. [PMID: 36152698 DOI: 10.1016/j.xphs.2022.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 09/07/2022] [Accepted: 09/07/2022] [Indexed: 01/18/2023]
Abstract
Raman scattering shows promise as a powerful routine tool, to determine both secondary and the smaller tertiary structural changes that precede aggregation in both solutions and solids. A method was developed utilizing principal component analysis (PCA) of Raman spectra for detection of small, but meaningful, pH induced changes in tertiary protein structure linked to aggregate formation using α-lactalbumin solutions as a model. The sample preparation and spectral parameters, were optimized for a bulk Raman probe. Analysis of large regions (600-1850 cm-1) yielded principal component (PC) scores useful for semi-quantitative comparison of protein conformation between formulations. PC loadings corresponded to specific structural peaks known to change with solution pH. PCA of circular dichroism (CD) spectra of dilute solutions yielded similar results. Sucrose is a common formulation excipient with a Raman spectrum that overlaps many protein peaks. With sucrose in the protein solution, the ability of PCA to discern protein structural changes from the Raman spectra was somewhat reduced. Analysis of a more limited spectral region (1530-1780 cm-1) with negligible sucrose spectral contribution improved the discrimination of protein conformational states. The new Raman method accurately distinguished differences in protein structure in concentrated solutions. The long-term goal is to explore Raman characterization as a routine monitoring tool of protein stability in both solution and solid states.
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7
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Monden Y, Tanaka H, Funakoshi R, Sunayama S, Yabe K, Kimoto E, Matsumiya K, Yoshikawa T. Comprehensive survey of transposon mPing insertion sites and transcriptome analysis for identifying candidate genes controlling high protein content of rice. FRONTIERS IN PLANT SCIENCE 2022; 13:969582. [PMID: 36119631 PMCID: PMC9479144 DOI: 10.3389/fpls.2022.969582] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Rice is the most important crop species in the world, being staple food of more than 80% of people in Asia. About 80% of rice grain is composed of carbohydrates (starch), with its protein content as low as 7-8%. Therefore, increasing the protein content of rice offers way to create a stable protein source that contributes to improving malnutrition and health problems worldwide. We detected two rice lines harboring a significantly higher protein content (namely, HP5-7 and HP7-5) in the EG4 population. The EG4 strain of rice is a unique material in that the transposon mPing has high transpositional activity and high copy numbers under natural conditions. Other research indicated that mPing is abundant in the gene-rich euchromatic regions, suggesting that mPing amplification should create new allelic variants, novel regulatory networks, and phenotypic changes in the EG4 population. Here, we aimed to identify the candidate genes and/or mPing insertion sites causing high protein content by comprehensively identifying the mPing insertion sites and carrying out an RNA-seq-based transcriptome analysis. By utilizing the next-generation sequencing (NGS)-based methods, ca. 570 mPing insertion sites were identified per line in the EG4 population. Our results also indicated that mPing apparently has a preference for inserting itself in the region near a gene, with 38 genes in total found to contain the mPing insertion in the HP lines, of which 21 and 17 genes were specific to HP5-7 and HP7-5, respectively. Transcriptome analysis revealed that most of the genes related to protein synthesis (encoding glutelin, prolamin, and globulin) were up-regulated in HP lines relative to the control line. Interestingly, the differentially expressed gene (DEG) analysis revealed that the expression levels of many genes related to photosynthesis decreased in both HP lines; this suggests the amount of starch may have decreased, indirectly contributing to the increased protein content. The high-protein lines studied here are expected to contribute to the development of high protein-content rice by introducing valuable phenotypic traits such as high and stable yield, disease resistance, and abundant nutrients.
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Affiliation(s)
- Yuki Monden
- Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan
| | - Hirona Tanaka
- Faculty of Agriculture, Okayama University, Okayama, Japan
| | | | | | - Kiyotaka Yabe
- Faculty of Agriculture, Kyoto University, Kyoto, Japan
| | - Eri Kimoto
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
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8
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Kim SM, Wen Y, Kim HW, Park HJ. Textural and sensory qualities of low-calorie surimi with carrageenan inserted as a protein substitute using coaxial extrusion 3D food printing. J FOOD ENG 2022. [DOI: 10.1016/j.jfoodeng.2022.111141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Liu K, Zhang C, Xu J, Liu Q. Research advance in gas detection of volatile organic compounds released in rice quality deterioration process. Compr Rev Food Sci Food Saf 2021; 20:5802-5828. [PMID: 34668316 DOI: 10.1111/1541-4337.12846] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 08/04/2021] [Accepted: 08/24/2021] [Indexed: 11/30/2022]
Abstract
Rice quality deterioration will cause grievous waste of stored grain and various food safety problems. Gas detection of volatile organic compounds (VOCs) produced by deterioration is a nondestructive detection method to judge rice quality and alleviate rice spoilage. This review discussed the research advance of VOCs detection in terms of nondestructive detection methods of rice quality deterioration, applications of VOCs in grain detection, inspection of characteristic gas produced during rice spoilage, rice deterioration prevention and control, and detection of VOCs released by rice mildew and insect attack. According to the main causes of rice quality deterioration and major sources of VOCs with off-odor generated during rice storage, deterioration can be divided into mold and insect infection. The results of literature manifested that researches mainly focused on the infection of Aspergillus in the mildew process and the attack of certain pests in recent years, thus the research scope was limited. In this paper, the gas detection methods combined with the chemometrics to qualitatively analyze the VOCs, as well as the correlation with the number of colonies and insects were further studied based on the common dominant strains during rice mildew, that is, Aspergillus and Penicillium fungi, and the common pests during storage, that is, Sitophilus oryzae and Rhyzopertha dominica. Furthermore, this paper pointed out that the quantitative determination of characteristic VOCs, the numeration relationship between VOCs and the degree of mildew and insect infestation, the further expansion of detection range, and the application of degraded rice should be the spotlight of future research.
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Affiliation(s)
- Kewei Liu
- College of Mechanical Engineering, Yangzhou University, Yangzhou, People's Republic of China
| | - Chao Zhang
- College of Mechanical Engineering, Yangzhou University, Yangzhou, People's Republic of China
| | - Jinyong Xu
- College of Mechanical Engineering, Yangzhou University, Yangzhou, People's Republic of China
| | - Qiaoquan Liu
- Key Laboratories of Crop Genetics and Physiology of Jiangsu Province, Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu, Yangzhou University, Yangzhou, People's Republic of China
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10
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Miao X, Miao Y, Gong H, Tao S, Chen Z, Wang J, Chen Y, Chen Y. NIR spectroscopy coupled with chemometric algorithms for the prediction of cadmium content in rice samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 257:119700. [PMID: 33872949 DOI: 10.1016/j.saa.2021.119700] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 03/06/2021] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
Fast determination of heavy metals is necessary and important to ensure the safety of crops. The potential of near-infrared spectroscopy coupled with chemometric technology for quantitative analysis of cadmium in rice was investigated. A total of 825 rice samples were collected and scanned by NIRS. The Kennard-Stone method was applied to divide the samples into calibration and validation sets. Before modeling, the spectrum was preprocessed using first derivation to reduce the baseline shift. Different chemometric tools such as interval partial least squares, moving window partial least squares, synergy interval partial least squares, and backward interval partial least squares were proposed to extract and optimize spectral interval from full-spectrum data. The performance of the calibration models generated on the basis of different regression algorithms was compared and evaluated. Results showed that the PLS models based on four chemometric algorithms outperformed the full-spectrum PLS model. Among the tools, biPLS performed better with the optimal subinterval selection. The root-mean-square error of prediction and correlation coefficient (R) of the biPLS model were 0.2133 and 0.9020, respectively. In addition, the low root-mean-square error of cross-validation was obtained in biPLS, which was 0.1756. NIRS technology combined with biPLS could be considered as an effective and convenient tool for primary screening and measuring of cadmium content in rice. In comparison with classical methodologies, this new technology was beneficial because of its eco-friendliness, fast analysis, and virtually no sample preparation required.
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Affiliation(s)
- Xuexue Miao
- Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Key Laboratory of Indica Rice Genetics and Breeding in the Middle and Lower Reaches of Yangtze River Valley, Ministry of Agriculture, Changsha 410125, China
| | - Ying Miao
- College of Mathematics and Informatics, South China Agricultural University, Guangzhou 510642, China
| | - Haoru Gong
- Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Key Laboratory of Indica Rice Genetics and Breeding in the Middle and Lower Reaches of Yangtze River Valley, Ministry of Agriculture, Changsha 410125, China
| | - Shuhua Tao
- Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Key Laboratory of Indica Rice Genetics and Breeding in the Middle and Lower Reaches of Yangtze River Valley, Ministry of Agriculture, Changsha 410125, China.
| | - Zuwu Chen
- Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Key Laboratory of Indica Rice Genetics and Breeding in the Middle and Lower Reaches of Yangtze River Valley, Ministry of Agriculture, Changsha 410125, China
| | - Jiemin Wang
- Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Key Laboratory of Indica Rice Genetics and Breeding in the Middle and Lower Reaches of Yangtze River Valley, Ministry of Agriculture, Changsha 410125, China
| | - Yingzi Chen
- Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Key Laboratory of Indica Rice Genetics and Breeding in the Middle and Lower Reaches of Yangtze River Valley, Ministry of Agriculture, Changsha 410125, China
| | - Yancheng Chen
- Hunan Rice Research Institute, Hunan Academy of Agricultural Sciences, Key Laboratory of Indica Rice Genetics and Breeding in the Middle and Lower Reaches of Yangtze River Valley, Ministry of Agriculture, Changsha 410125, China
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11
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Zhang S, Li Y, Bao Z, Sun N, Lin S. Internal cavity amplification of shell-like ferritin regulated with the change of the secondary and tertiary structure induced by PEF technology. Int J Biol Macromol 2021; 182:849-857. [PMID: 33864865 DOI: 10.1016/j.ijbiomac.2021.04.072] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 04/11/2021] [Accepted: 04/12/2021] [Indexed: 11/18/2022]
Abstract
In this study, the effect of pulsed electric field (PEF) on apparent morphology and molecular structure of shell-like ferritin obtained from horse spleen was determined by circular dichroic (CD), fluorescence spectroscopy, Raman spectroscopy, cold field emission scanning electron microscopy (CF-SEM) and transmission electron microscopy (TEM), and verified by molecule dynamics (MD) simulation. After PEF treatment, the α-helix content of the samples reached a minimum value at 10 kV/cm, which indicated that the ferritin structure has been partially unfolded. However, the α-helix content peaked again after resting for 2 h at 25 ± 1 °C. This indicated that the PEF-treated ferritin tended to restore its original spherical morphology probably owing to the reversible assembly characteristic of ferritin. In addition, microstructure analysis revealed that ferritin particles aggregated after PEF treatment. Therefore, PEF treatment could induce the "exposure" of hydrophobic amino acids and conversion of disulfide bond configuration, and consequently, regulate the internal cavity stability of ferritin. The research will be beneficial to expand the application of PEF treatment in the modification of protein structure, and provide a theoretical basis for the application of ferritin as a carrier of bioactive molecules in food.
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Affiliation(s)
- Shuyu Zhang
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Yinli Li
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Zhijie Bao
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Na Sun
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China.
| | - Songyi Lin
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China.
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12
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Yu D, Zhang X, Zou W, Tang H, Yang F, Wang L, Elfalleh W. Raman spectroscopy analysis of the effect of electrolysis treatment on the structure of soy protein isolate. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-020-00716-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Li L, He M, Wang N, Li M, Wu C, Li Y, Teng F. Spectroscopic analysis of the effect of vitamin B12-soy protein isolate on the soy protein isolate structure. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Perera SP, Hucl P, L'Hocine L, Nickerson MT. Microstructure and distribution of oil, protein, and starch in different compartments of canaryseed (
Phalaris canariensis
L.). Cereal Chem 2020. [DOI: 10.1002/cche.10381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Suneru P. Perera
- Department of Food and Bioproduct Sciences University of Saskatchewan Saskatoon SK Canada
- Keyleaf Life Sciences Saskatoon SK Canada
| | - Pierre Hucl
- Crop Development Centre University of Saskatchewan Saskatoon SK Canada
| | - Lamia L'Hocine
- Agriculture and Agri‐Food Canada Saint‐Hyacinthe QC Canada
| | - Michael T. Nickerson
- Department of Food and Bioproduct Sciences University of Saskatchewan Saskatoon SK Canada
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15
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Wang Y, Zhang Z, Li Y, Jiang H, Kumah Mintah B, Dabbour M, He R, Ma H. Lysinoalanine formation and conformational characteristics of rice dreg protein isolates by multi-frequency countercurrent S-type sonochemical action. ULTRASONICS SONOCHEMISTRY 2020; 69:105257. [PMID: 32688247 DOI: 10.1016/j.ultsonch.2020.105257] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 06/20/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
The influences of multi-frequency countercurrent S-type ultrasound (MFSU), with various frequency modes, on lysinoalanine (LAL) formation and conformational characteristics of rice dreg protein isolates (RDPI) were investigated. The ultrasonic operating mode with dual-frequency combination (20/40 kHz) indicated lower LAL content and higher protein dissolution rate of RDPI compared with that of other ultrasound operating modes. Under the dual-frequency ultrasound mode of 20/40 kHz, acoustic power density of 60 W/L, time of 20 min, and temperature of 35 °C, the relative reduction rate of LAL of RDPI reached the highest with its value of 26.95%, and the protein dissolution rate was 71.87%. The changes in chemical interactions between protein molecules indicated that hydrophobic interactions and disulfide bonds played a considerable role in the formation of LAL of RDPI, especially the reduction of g-g-g and g-g-t disulfide bond. Alterations in microstructure showed that ultrasonication loosened the protein structure and created more uniform protein fragments of RDPI. In conclusion, using MFSU in treating RDPI was an efficacious avenue for minimizing LAL content and modifying the conformational characteristics of RDPI.
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Affiliation(s)
- Yang Wang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Applied Chemistry and Biological Engineering, Weifang Engineering Vocational College, 8979 Yunmenshan South Road, Qingzhou, Shandong 262500, China
| | - Zhaoli Zhang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Applied Chemistry and Biological Engineering, Weifang Engineering Vocational College, 8979 Yunmenshan South Road, Qingzhou, Shandong 262500, China
| | - Yihe Li
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; College of Grain Engineering, Food&Drug, Jiangsu Vocational College of Finance & Economics, 8 Meicheng East Road, Huaian, Jiangsu 223001, China
| | - Hui Jiang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Benjamin Kumah Mintah
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Mokhtar Dabbour
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Department of Agricultural and Biosystems Engineering, Faculty of Agriculture, Benha University, P.O. Box 13736, Moshtohor, Qaluobia, Egypt
| | - Ronghai He
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China.
| | - Haile Ma
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
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16
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Lu W, Qin Y, Ruan Z. Effects of high hydrostatic pressure on color, texture, microstructure, and proteins of the tilapia (Orechromis niloticus) surimi gels. J Texture Stud 2020; 52:177-186. [PMID: 33191516 DOI: 10.1111/jtxs.12572] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 12/14/2022]
Abstract
The tilapia (Orechromis niloticus) surimi gels were prepared with high hydrostatic pressure (0, 100, 200, 300, and 400 MPa for 15 min) treatments to investigate the changes in water-holding capacity, color, gel strength, microstructure, texture, and proteins of the gels. Compared it with cooked gel (40°C/30 min + 90°C/30 min). The whiteness of heat-induced and HHP-induced gels were significant (p < .05) higher than that of untreated samples. The gels formed by pressurization were dense and flexible, and formed by cross-linking based on hydrogen bonding. SDS-PAGE patterns showed no major change in the actin and tropomyosin protein profiles of gels induced by HHP-300. Raman spectroscopy confirmed disulfide bonds played an important role in gel formation. A lower intensity ratio observed in HHP-induced protein supported the tyrosine residues involved in hydrogen bond formation. The changes of secondary structure suggested decreased α-helix content and increased β-sheet.
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Affiliation(s)
- Wangwei Lu
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,Institute of Agriculture and Food Engineering, Kunming University of Science and Technology, Kunming, China
| | - Yuyue Qin
- Institute of Agriculture and Food Engineering, Kunming University of Science and Technology, Kunming, China
| | - Zheng Ruan
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
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17
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Prediction of water holding capacity and pH in porcine longissimus lumborum using Raman spectroscopy. Meat Sci 2020; 172:108357. [PMID: 33130356 DOI: 10.1016/j.meatsci.2020.108357] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 10/14/2020] [Accepted: 10/20/2020] [Indexed: 12/24/2022]
Abstract
The main purpose of this study was to investigate if Raman spectra recorded at the exact same position as drip loss measurements could improve prediction of drip loss in pork. One ventral and one dorsal cylindrical plug, cut from a standardized slice from Longissimus lumborum, were used to determine drip loss by EZ-DripLoss method and to collect Raman spectra, while ultimate pH was measured at another location. Partial least squares regression models were developed using spectra from each plug individually or averaged spectra from both plugs. The best models used spectra from the ventral plug, resulting in rcv2=0.75, root mean square error of cross-validation (RMSECV) = 1.27% and ratio of prediction to deviation (RPD) =2.0 for EZ-DripLoss and rcv2=0.72, RMSECV = 0.05 and RPD = 2.0 for ultimate pH. Results indicate that Raman spectroscopy can be used for rough screening of drip loss and pH in pork, and that the location chosen for collection of spectra can be very important for successful predictions.
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18
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Kaspchak E, Silveira JLM, Igarashi-Mafra L, Mafra MR. Effect of antinutrients on heat-set gelation of soy, pea, and rice protein isolates. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2020; 57:4201-4210. [PMID: 33071341 PMCID: PMC7520492 DOI: 10.1007/s13197-020-04458-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/27/2020] [Accepted: 04/15/2020] [Indexed: 06/11/2023]
Abstract
Plant-derived protein can present antinutrients (ANs) in its composition. The ANs can interact with the protein, affecting its solubility and functional properties, such as gelation. This work evaluated the effect of three ANs, namely phytic acid (PA), tannic acid (TA), and Quillaja bark saponin (QBS), on the gelation and solubility of soy (SPI), pea (PPI), and rice protein isolate (RPI). The ANs altered the protein isolates gelation and solubility. PA decreased the solubility and gelation of the three protein isolates at pH 3.0. The TA was the AN that most decreased the solubility and gelation characteristics of SPI and PPI at both pHs analyzed. QBS increased the gelation of SPI at pH 3.0 but decreased the final gel strength of RPI at the same pH. These results show that the knowledge of the presence of ANs in the protein isolates is of fundamental relevance for the processing of vegetable proteins.
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Affiliation(s)
- Elaine Kaspchak
- Department of Chemical Engineering, Federal University of Paraná, Rua Francisco H. Dos Santos S/N, Curitiba, PR zip code 81531-980 Brazil
| | - Joana Léa Meira Silveira
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Rua Francisco H. Dos Santos S/N, Curitiba, PR zip code 81531-980 Brazil
| | - Luciana Igarashi-Mafra
- Department of Chemical Engineering, Federal University of Paraná, Rua Francisco H. Dos Santos S/N, Curitiba, PR zip code 81531-980 Brazil
| | - Marcos R. Mafra
- Department of Chemical Engineering, Federal University of Paraná, Rua Francisco H. Dos Santos S/N, Curitiba, PR zip code 81531-980 Brazil
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19
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Townsend DJ, Middleton DA, Ashton L. Raman Spectroscopy with 2D Perturbation Correlation Moving Windows for the Characterization of Heparin-Amyloid Interactions. Anal Chem 2020; 92:13822-13828. [PMID: 32935978 DOI: 10.1021/acs.analchem.0c02390] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
It has been shown extensively that glycosaminoglycan (GAG)-protein interactions can induce, accelerate, and impede the clearance of amyloid fibrils associated with systemic and localized amyloidosis. Obtaining molecular details of these interactions is fundamental to our understanding of amyloid disease. Consequently, there is a need for analytical approaches that can identify protein conformational transitions and simultaneously characterize heparin interactions. By combining Raman spectroscopy with two-dimensional (2D) perturbation correlation moving window (2DPCMW) analysis, we have successfully identified changes in protein secondary structure during pH- and heparin-induced fibril formation of apolipoprotein A-I (apoA-I) associated with atherosclerosis. Furthermore, from the 2DPCMW, we have identified peak shifts and intensity variations in Raman peaks arising from different heparan sulfate moieties, indicating that protein-heparin interactions vary at different heparin concentrations. Raman spectroscopy thus reveals new mechanistic insights into the role of GAGs during amyloid fibril formation.
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Affiliation(s)
- David J Townsend
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, United Kingdom
| | - David A Middleton
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, United Kingdom
| | - Lorna Ashton
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, United Kingdom
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20
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Enrione J, Char C, Pepczynska M, Padilla C, González-Muñoz A, Olguín Y, Quinzio C, Iturriaga L, Díaz-Calderón P. Rheological and Structural Study of Salmon Gelatin with Controlled Molecular Weight. Polymers (Basel) 2020; 12:E1587. [PMID: 32709001 PMCID: PMC7407307 DOI: 10.3390/polym12071587] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/12/2020] [Accepted: 07/13/2020] [Indexed: 11/21/2022] Open
Abstract
This study explores the molecular structuring of salmon gelatin (SG) with controlled molecular weight produced from salmon skin, and its relationship with its thermal and rheological properties. SG was produced under different pH conditions to produce samples with well-defined high (SGH), medium (SGM), and low (SGL) molecular weight. These samples were characterized in terms of their molecular weight (MW, capillary viscometry), molecular weight distribution (electrophoresis), amino acid profile, and Raman spectroscopy. These results were correlated with thermal (gelation energy) and rheological properties. SGH presented the higher MW (173 kDa) whereas SGL showed shorter gelatin polymer chains (MW < 65 kDa). Raman spectra and gelation energy suggest that amount of helical structures in gelatin is dependent on the molecular weight, which was well reflected by the higher viscosity and G' values for SGH. Interestingly, for all the molecular weight and molecular configuration tested, SG behaved as a strong gel (tan δ < 1), despite its low viscosity and low gelation temperature (3-10 °C). Hence, the molecular structuring of SG reflected directly on the thermal and viscosity properties, but not in terms of the viscoelastic strength of gelatin produced. These results give new insights about the relationship among structural features and macromolecular properties (thermal and rheological), which is relevant to design a low viscosity biomaterial with tailored properties for specific applications.
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Affiliation(s)
- Javier Enrione
- Biopolymer Research & Engineering Laboratory (BIOPREL), Escuela de Nutrición y Dietética, Facultad de Medicina, Universidad de Los Andes, Santiago 7620001, Chile; (J.E.); (M.P.); (C.P.); (A.G.-M.)
- Centro de Investigación e Innovación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago 7620001, Chile
| | - Cielo Char
- Departamento de Ciencias de los Alimentos y Tecnología Química, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile;
| | - Marzena Pepczynska
- Biopolymer Research & Engineering Laboratory (BIOPREL), Escuela de Nutrición y Dietética, Facultad de Medicina, Universidad de Los Andes, Santiago 7620001, Chile; (J.E.); (M.P.); (C.P.); (A.G.-M.)
- Centro de Investigación e Innovación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago 7620001, Chile
| | - Cristina Padilla
- Biopolymer Research & Engineering Laboratory (BIOPREL), Escuela de Nutrición y Dietética, Facultad de Medicina, Universidad de Los Andes, Santiago 7620001, Chile; (J.E.); (M.P.); (C.P.); (A.G.-M.)
- Centro de Investigación e Innovación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago 7620001, Chile
| | - Adrian González-Muñoz
- Biopolymer Research & Engineering Laboratory (BIOPREL), Escuela de Nutrición y Dietética, Facultad de Medicina, Universidad de Los Andes, Santiago 7620001, Chile; (J.E.); (M.P.); (C.P.); (A.G.-M.)
- Centro de Investigación e Innovación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago 7620001, Chile
| | - Yusser Olguín
- Centro Científico Tecnoloógico de Valparaíso (CCTVal), Universidad Técnica Federico Santa María, Valparaíso 2390123, Chile;
- Centro de Biotecnología (CB-DAL), Universidad Técnica Federico Santa María, Valparaíso 2390123, Chile
| | - Claudia Quinzio
- Centro de Investigación en Biofísica Aplicada y Alimentos (CIBAAL), CONICET-Universidad Nacional de Santiago del Estero, Santiago del Estero 4200, Argentina; (C.Q.); (L.I.)
| | - Laura Iturriaga
- Centro de Investigación en Biofísica Aplicada y Alimentos (CIBAAL), CONICET-Universidad Nacional de Santiago del Estero, Santiago del Estero 4200, Argentina; (C.Q.); (L.I.)
| | - Paulo Díaz-Calderón
- Biopolymer Research & Engineering Laboratory (BIOPREL), Escuela de Nutrición y Dietética, Facultad de Medicina, Universidad de Los Andes, Santiago 7620001, Chile; (J.E.); (M.P.); (C.P.); (A.G.-M.)
- Centro de Investigación e Innovación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago 7620001, Chile
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21
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Ghanghas N, M. T. M, Sharma S, Prabhakar PK. Classification, Composition, Extraction, Functional Modification and Application of Rice (Oryza sativa) Seed Protein: A Comprehensive Review. FOOD REVIEWS INTERNATIONAL 2020. [DOI: 10.1080/87559129.2020.1733596] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Neeraj Ghanghas
- Department of Food Science and Technology, National Institute of Food Technology Entrepreneurship and Management, Kundli, India
| | - Mukilan M. T.
- Department of Food Science and Technology, National Institute of Food Technology Entrepreneurship and Management, Kundli, India
| | - Shikha Sharma
- Department of Food Science and Technology, National Institute of Food Technology Entrepreneurship and Management, Kundli, India
| | - Pramod K. Prabhakar
- Department of Food Science and Technology, National Institute of Food Technology Entrepreneurship and Management, Kundli, India
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22
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Ettah I, Ashton L. Determination of Phosphorylation and Deprotonation Induced Higher Order Structural Transitions in αs-Caseins. Anal Chem 2019; 91:13940-13946. [DOI: 10.1021/acs.analchem.9b03457] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Ilokugbe Ettah
- Department of Chemistry, Lancaster University, Lancaster, Lancashire LA1 4YB, United Kingdom
| | - Lorna Ashton
- Department of Chemistry, Lancaster University, Lancaster, Lancashire LA1 4YB, United Kingdom
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23
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Tang H, Fu T, Feng Y, Zhang S, Wang C, Zhang D. Effect of heat treatment on solubility, surface hydrophobicity and structure of rice bran albumin and globulin. QUALITY ASSURANCE AND SAFETY OF CROPS & FOODS 2019. [DOI: 10.3920/qas2018.1402] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- H. Tang
- College of Food, Heilongjiang Bayi Agricultural University, Xinfeng Lu 5, Daqing 163319, China P.R
| | - T. Fu
- College of Food, Heilongjiang Bayi Agricultural University, Xinfeng Lu 5, Daqing 163319, China P.R
| | - Y. Feng
- College of Food, Heilongjiang Bayi Agricultural University, Xinfeng Lu 5, Daqing 163319, China P.R
| | - S. Zhang
- College of Food, Heilongjiang Bayi Agricultural University, Xinfeng Lu 5, Daqing 163319, China P.R
| | - C. Wang
- College of Food, Heilongjiang Bayi Agricultural University, Xinfeng Lu 5, Daqing 163319, China P.R
- Key Laboratory of Agro-Products Processing and Quality Safety of Heilongjiang province, Daqing 163319, China P.R
| | - D. Zhang
- College of Food, Heilongjiang Bayi Agricultural University, Xinfeng Lu 5, Daqing 163319, China P.R
- Key Laboratory of Agro-Products Processing and Quality Safety of Heilongjiang province, Daqing 163319, China P.R
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24
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Yue X, Tan Y, Fan W, Song S, Ji H, Li B. Raman spectroscopic analysis of paddy rice infected by three pests and diseases common in Northeast Asia. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1742-6596/1324/1/012050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Zhang J, Tang T, Jiang Z, Liu Y, Jiang A. The modification of ovalbumin surface properties treated by pulsed electric field combined with divalent metal ions. Food Chem 2019; 293:455-462. [DOI: 10.1016/j.foodchem.2019.05.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 04/15/2019] [Accepted: 05/02/2019] [Indexed: 11/25/2022]
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26
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Czekus B, Pećinar I, Petrović I, Paunović N, Savić S, Jovanović Z, Stikić R. Raman and Fourier transform infrared spectroscopy application to the Puno and Titicaca cvs. of quinoa seed microstructure and perisperm characterization. J Cereal Sci 2019. [DOI: 10.1016/j.jcs.2019.02.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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27
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Ettah I, Ashton L. Engaging with Raman Spectroscopy to Investigate Antibody Aggregation. Antibodies (Basel) 2018; 7:E24. [PMID: 31544876 PMCID: PMC6640673 DOI: 10.3390/antib7030024] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 07/04/2018] [Accepted: 07/04/2018] [Indexed: 11/24/2022] Open
Abstract
In the last decade, a number of studies have successfully demonstrated Raman spectroscopy as an emerging analytical technique for monitoring antibody aggregation, especially in the context of drug development and formulation. Raman spectroscopy is a robust method for investigating protein conformational changes, even in highly concentrated antibody solutions. It is non-destructive, reproducible and can probe samples in an aqueous environment. In this review, we focus on the application and challenges associated with using Raman spectroscopy as a tool to study antibody aggregates.
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Affiliation(s)
- Ilokugbe Ettah
- Department of Chemistry, Lancaster University, Lancaster, Lancashire LA1 4YB, UK.
| | - Lorna Ashton
- Department of Chemistry, Lancaster University, Lancaster, Lancashire LA1 4YB, UK.
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28
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Li F, Wang J, Xu L, Wang S, Zhou M, Yin J, Lu A. Rapid Screening of Cadmium in Rice and Identification of Geographical Origins by Spectral Method. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15020312. [PMID: 29439448 PMCID: PMC5858381 DOI: 10.3390/ijerph15020312] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 01/26/2018] [Accepted: 02/06/2018] [Indexed: 11/16/2022]
Abstract
The accuracy, repeatability and detection limits of the energy-dispersive X-ray fluorescence (XRF) spectrometer used in this study were tested to verify its suitability for rapid screening of cadmium in samples. Concentrations of cadmium in rice grain samples were tested by the XRF spectrometer. The results showed that the apparatus had good precision around the national limit value (0.2 mg/kg). Raman spectroscopy has been analyzed in the discrimination of rice grain samples from different geographical origins within China. Scanning time has been discussed in order to obtain better Raman features of rice samples. A total of 31 rice samples were analyzed. After spectral data pre-treatment, principal component analysis (PCA), K-means clustering (KMC), hierarchical clustering (HC) and support vector machine (SVM) were performed to discriminate origins of rice samples. The results showed that the geographical origins of rice could be classified using Raman spectroscopy combined with multivariate analysis.
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Affiliation(s)
- Fang Li
- Beijing Research Center for Agricultural Standards and Testing, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
- Beijing Municipal Key Laboratory of Agriculture Environment Monitoring, Beijing 100097, China.
| | - Jihua Wang
- Beijing Research Center for Agricultural Standards and Testing, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
- Beijing Municipal Key Laboratory of Agriculture Environment Monitoring, Beijing 100097, China.
| | - Li Xu
- Beijing Research Center for Agricultural Standards and Testing, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
- Beijing Municipal Key Laboratory of Agriculture Environment Monitoring, Beijing 100097, China.
| | - Songxue Wang
- Academy of State Administration of Grain, Beijing 100037, China.
| | - Minghui Zhou
- Academy of State Administration of Grain, Beijing 100037, China.
| | - Jingwei Yin
- Beijing Research Center for Agricultural Standards and Testing, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
| | - Anxiang Lu
- Beijing Research Center for Agricultural Standards and Testing, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
- Beijing Municipal Key Laboratory of Agriculture Environment Monitoring, Beijing 100097, China.
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29
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Ashton L, Brewster VL, Correa E, Goodacre R. Detection of glycosylation and iron-binding protein modifications using Raman spectroscopy. Analyst 2017; 142:808-814. [DOI: 10.1039/c6an02516a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We have used Raman spectroscopy and chemometrics to determine protein modification as a result of glycosylation and iron binding.
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Affiliation(s)
- Lorna Ashton
- School of Chemistry
- Manchester Institute of Biotechnology
- University of Manchester
- Manchester
- UK
| | - Victoria L. Brewster
- School of Chemistry
- Manchester Institute of Biotechnology
- University of Manchester
- Manchester
- UK
| | - Elon Correa
- School of Chemistry
- Manchester Institute of Biotechnology
- University of Manchester
- Manchester
- UK
| | - Royston Goodacre
- School of Chemistry
- Manchester Institute of Biotechnology
- University of Manchester
- Manchester
- UK
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30
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Jing X, Yang C, Zhang L. Characterization and Analysis of Protein Structures in Oat Bran. J Food Sci 2016; 81:C2337-C2343. [PMID: 27636108 DOI: 10.1111/1750-3841.13445] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 07/27/2016] [Accepted: 08/09/2016] [Indexed: 11/29/2022]
Abstract
Globulin, albumin, gluten, and gliadin in oat bran were prepared by the Osborn method using oat bran as starting material. We characterized the secondary and tertiary structures of 4 proteins using circular dichroism, Fourier-transform infrared spectroscopy, and fluorescence spectroscopy in order to analyze the composition and functional mechanisms. The results showed that the amino acid composition in all the 4 proteins was relatively balanced, and the essential amino acid content in albumin and globulin was high. The molecular weights of albumin, globulin, gliadin, and gluten were 19 to 21, 15 to 53, 20 to 38, and 10 to 90 kDa, respectively. The composition of gluten was a little complex compared to those of the other oat bran proteins. The secondary structure distribution of the 4 proteins differed, and increase in the pH resulted in modification of the β-sheet structure to α-helical structure. Moreover, the α-helix content and surface hydrophobicity were negatively correlated (r = -0.988, P < 0.05). The peak position (λmax ) and intensity of the fluorescence spectra of 4 proteins were in the order of gliadin > globulin > gluten > albumin, indicating that surface hydrophobicity of gliadin was the strongest and that of albumin was the weakest among the 4 proteins.
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Affiliation(s)
- Xuelian Jing
- College of Food Science, Heilongjiang Bayi Agricultural Univ, Daqing, 163319, China
| | - Chen Yang
- Dept. of Agricultural, Food, and Nutritional Science, Univ. of Alberta, Alberta, Canada
| | - Liping Zhang
- College of Food Science, Heilongjiang Bayi Agricultural Univ, Daqing, 163319, China.
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31
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32
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Xijun L, Junjie G, Danli W, Lin L, Jiaran Z. Effects of Protein in Wheat Flour on Retrogradation of Wheat Starch. J Food Sci 2014; 79:C1505-11. [DOI: 10.1111/1750-3841.12525] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2013] [Accepted: 03/26/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Lian Xijun
- Tianjin Key Laboratory of Food Biotechnology; School of Biotechnology and Food Science; TianJin Univ. of Commerce; Tianjin 300134 P.R. China
- College of Light Industry and Food Sciences South China Univ. of Technology; Guangzhou 510640 P.R.China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety; Guangzhou 510640 P.R. China
| | - Guo Junjie
- School of Science; Tianjin Univ. of Commerce; Tianjin 300134 P.R. China
| | - Wang Danli
- School of Science; Tianjin Univ. of Commerce; Tianjin 300134 P.R. China
| | - Li Lin
- College of Light Industry and Food Sciences South China Univ. of Technology; Guangzhou 510640 P.R.China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety; Guangzhou 510640 P.R. China
| | - Zhu Jiaran
- Hebei Jiaotong Vocational & Technical College; Tianjin 300381 P.R. China
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Liu YY, Zhang Y, Zeng XA, El-Mashad H, Pan ZL, Wang QJ. Effect of Pulsed Electric Field on Microstructure of Some Amino Acid Group of Soy Protein Isolates. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2014. [DOI: 10.1515/ijfe-2013-0033] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The effect of a pulsed electric field (PEF) on the microstructure of some amino acids was studied. Raman spectrum was used to determine the effect of PEF on tyrosine, tryptophan, proline residues, histidine, arginine, aliphatic amino acid, disulfide bond, and polypeptide backbone in soy protein isolates (SPI). Results suggested that increasing the intensity of PEF gradually to 50 kV cm−1 led to a reduction in gauche C–S conformation of CCSSCC dihedral angles. The increase of the PEF intensity caused an increase in the gauche–gauche–gauche conformation of the disulfide bond accompanying a decrease in α-helix and β-sheet and an increase in antiparallel β-sheet and disorder structure. A critical pulse intensity of 30 kV cm−1 was observed for unfolding and reassembling of SPI, which was verified in our previous study (Liu et al., Eur Food Res Technol 233:841–50). When the pulse intensity gradually increased to around 30 kV cm−1, the exposure of tyrosine and tryptophan, the vibration of CH2 wagging in proline and CH2 in the midazole ring of histidine, the vibration of C—H bending and C—N stretching inside a charged arginine, and asymmetric H—C—H bending deformation vibration in CH2 and CH3 groups in aromatic and aliphatic amino acids gradually increased, suggesting an unfolding of protein molecules. When the pulse intensity continually increased from 30 to 50 kV cm−1, the microstructure of all above amino acids decreased due to the reassembly of unfolding proteins.
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Singh KS, Majik MS, Tilvi S. Vibrational Spectroscopy for Structural Characterization of Bioactive Compounds. COMPREHENSIVE ANALYTICAL CHEMISTRY 2014. [DOI: 10.1016/b978-0-444-63359-0.00006-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Lian X, Wang C, Zhang K, Li L. The retrogradation properties of glutinous rice and buckwheat starches as observed with FT-IR, 13C NMR and DSC. Int J Biol Macromol 2013; 64:288-93. [PMID: 24360894 DOI: 10.1016/j.ijbiomac.2013.12.014] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 12/01/2013] [Accepted: 12/10/2013] [Indexed: 11/18/2022]
Abstract
The experiment was conducted to study the retrogradation properties of glutinous rice and buckwheat starch with wavelengths of maximum absorbance, FT-IR, (13)C NMR, and DSC. The results show that the starches in retrograded glutinous rice starch and glutinous rice amylopectin could not form double helix. The IR results show that protein inhabits in glutinous rice and maize starches in a different way and appearance of C-H symmetric stretching vibration at 2852 cm(-1) in starch might be appearance of protein. Retrogradation untied the protein in glutinous amylopectin. Enthalpies of sweet potato and maize granules are higher than those of their retrograded starches. The (13)C NMR results show that retrogradation of those two starches leads to presence of β-anomers and retrogradation might decompose lipids in glutinous rice amylopectin into small molecules. Glutinous rice starch was more inclined to retrogradation than buckwheat starch. The DSC results show that the second peak temperatures for retrograded glutinous rice and buckwheat starches should be assigned to protein. The SEM results show that an obvious layer structure exists in retrograded glutinous rice amylopectin.
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Affiliation(s)
- Xijun Lian
- Tianjin Key Laboratory of Food Biotechnology, School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, PR China; College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, PR China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, PR China.
| | - Changjun Wang
- Tianjin Key Laboratory of Food Biotechnology, School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, PR China
| | - Kunsheng Zhang
- Tianjin Key Laboratory of Food Biotechnology, School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, PR China
| | - Lin Li
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, PR China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, PR China.
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Tozzi S, Zanna N, Taddei P. Study on the interaction between gliadins and a coumarin as molecular model system of the gliadins-anthocyanidins complexes. Food Chem 2013; 141:3586-97. [PMID: 23993525 DOI: 10.1016/j.foodchem.2013.05.136] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 05/20/2013] [Accepted: 05/30/2013] [Indexed: 11/26/2022]
Abstract
To clarify the conformational changes of gliadins (Glia) upon complexation with anthocyanidins (in particular cyanidin, Cya), the interaction of Glia with a coumarin derivative (3-ethoxycarbonylcoumarin, 3-EcC), having a benzocondensed structure similar to that of Cya, has been investigated by NMR, IR, and Raman spectroscopy under acidic and neutral conditions. Raman spectra showed that both molecules produce a similar effect on the Glia structure, i.e. an increase in the α-helix conformation and a decrease in β-sheet and β-turns content. In the presence of both molecules, this effect is more marked; the spectroscopic results showed that both Cya and 3-EcC interact with Glia and 3-EcC favors the complex formation with Glia. The results obtained in this study provide new insights into anthocyanidins-Glia interactions and may have relevance to human health, in the field of the attempts to modify gluten proteins to decrease allergen immunoreactivity.
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Affiliation(s)
- Silvia Tozzi
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Via Belmeloro 8/2, 40126 Bologna, Italy.
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Guo Y, Cai W, Tu K, Tu S, Wang S, Zhu X, Zhang W. Infrared and Raman spectroscopic characterization of structural changes in albumin, globulin, glutelin, and prolamin during rice aging. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:185-192. [PMID: 23268763 DOI: 10.1021/jf303345r] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Structural changes in albumin, globulin, glutelin, and prolamin from fresh and aged rice were characterized in this study. Infrared and Raman spectroscopies revealed changes in interactions between protein and starch, and the occurrence of structural changes involving secondary and tertiary structures of protein induced by rice aging. The α-helical structure was reduced, and aliphatic amino-acid side chains became more buried in albumin after rice aging. Oxidation of the sulfhydryl group in globulin was evident. The unordered coil in glutelin decreased, and a characteristic frequency of the free sulfhydryl group appeared. The antiparallel β-sheet in prolamin increased, the conformation of disulfide bonds changed, and tyrosine residues became exposed to a polar environment. The association between globulin and starch strengthened, whereas that between glutelin and starch diminished. These differences in structure and interactions with starch might be responsible for the dissimilar pasting properties between fresh and aged rice.
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Affiliation(s)
- Yubao Guo
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P R China
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Enhanced Raman spectroscopic discrimination of the geographical origins of rice samples via transmission spectral collection through packed grains. Talanta 2012; 101:488-94. [DOI: 10.1016/j.talanta.2012.10.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 09/28/2012] [Accepted: 10/01/2012] [Indexed: 11/23/2022]
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39
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Characterization and In Vitro digestibility of rice protein prepared by enzyme-assisted microfluidization: Comparison to alkaline extraction. J Cereal Sci 2012. [DOI: 10.1016/j.jcs.2012.06.008] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Vieyra H, Aguilar-Méndez MA, San Martín-Martínez E. Study of biodegradation evolution during composting of polyethylene-starch blends using scanning electron microscopy. J Appl Polym Sci 2012. [DOI: 10.1002/app.37818] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Li H, Miyauchi Y, Anh Tuan N, Mizutani G, Koyano M. Optical Sum Frequency Generation Image of Rice Grains. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/jbnb.2012.322035] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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42
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Brewster VL, Ashton L, Goodacre R. Monitoring the glycosylation status of proteins using Raman spectroscopy. Anal Chem 2011; 83:6074-81. [PMID: 21699257 DOI: 10.1021/ac2012009] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Protein-based biopharmaceuticals are becoming increasingly widely used as therapeutic agents, and the characterization of these biopharmaceuticals poses a significant analytical challenge. In particular, monitoring posttranslational modifications (PTMs), such as glycosylation, is an important aspect of this characterization because these glycans can strongly affect the stability, immunogenicity, and pharmacokinetics of these biotherapeutic drugs. Raman spectroscopy is a powerful tool, with many emerging applications in the bioprocessing arena. Although the technique has a relatively rich history in protein science, only recently has Raman spectroscopy been investigated for assessing posttranslational modifications, including phosphorylation, acetylation, trimethylation, and ubiquitination. In this investigation, we develop for the first time Raman spectroscopy combined with multivariate data analyses, including principal components analysis and partial least-squares regression, for the determination of the glycosylation status of proteins and quantifying the relative concentrations of the native ribonuclease (RNase) A protein and RNase B glycoprotein within mixtures.
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Affiliation(s)
- Victoria L Brewster
- School of Chemistry, Manchester Interdisciplinary Biocentre, University of Manchester, Manchester, UK
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Xing X, Gao BY, Zhong QQ, Yue QY, Li Q. Sorption of nitrate onto amine-crosslinked wheat straw: characteristics, column sorption and desorption properties. JOURNAL OF HAZARDOUS MATERIALS 2011; 186:206-211. [PMID: 21112141 DOI: 10.1016/j.jhazmat.2010.10.104] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Revised: 10/26/2010] [Accepted: 10/27/2010] [Indexed: 05/30/2023]
Abstract
The nitrate removal process was evaluated using a fixed-bed column packed with amine-crosslinked wheat straw (AC-WS). Column sorption and desorption characteristics of nitrate were studied extensively. Solid-state (13)C NMR and zeta potential analysis validated the existence of crosslinked amine groups in AC-WS. Raman shift of the nitrate peaks suggested the electrostatic attraction between the adsorbed ions and positively charged amine sites. The column sorption capacity (q(ed)) of the AC-WS for nitrate was 87.27 mg g(-1) in comparison with the raw WS of 0.57 mg g(-1). Nitrate sorption in column was affected by bed height, influent nitrate concentration, flow rate and pH, and of all these, influent pH demonstrated an essential effect on the performance of the column. In addition, desorption and dynamic elution tests were repeated for several cycles, with high desorption rate and slight losses in its initial column sorption capacity.
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Affiliation(s)
- Xu Xing
- Key Laboratory of Water Pollution Control and Recycling (Shandong), School of Environmental Science and Engineering, Shandong University, Jinan, PR China
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44
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Vieyra Ruiz H, Martínez ESM, Méndez MÁA. Biodegradability of polyethylene-starch blends prepared by extrusion and molded by injection: Evaluated by response surface methodology. STARCH-STARKE 2010. [DOI: 10.1002/star.201000075] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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45
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pH-induced conformational transitions in α-lactalbumin investigated with two-dimensional Raman correlation variance plots and moving windows. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.03.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Li X, Liu Y, Yi C, Cheng Y, Zhou S, Hua Y. Microstructure and rheological properties of mixtures of acid-deamidated rice protein and dextran. J Cereal Sci 2010. [DOI: 10.1016/j.jcs.2009.08.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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47
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48
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49
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Ramírez Ortiz ME, San Martín-Martínez E, Martínez Padilla LP. Rheological and Thermal Properties of Extruded Mixtures of Rice Starch and Isolated Soy Protein. STARCH-STARKE 2008. [DOI: 10.1002/star.200800212] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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50
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Baranski R, Baranska M. Discrimination between nongenetically modified (Non-GM) and GM plant tissue expressing cysteine-rich polypeptide using FT-raman spectroscopy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:4491-6. [PMID: 18494491 DOI: 10.1021/jf800410m] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Fourier transform (FT)-Raman spectroscopy was applied to the analysis of genetically modified (GM) plant tissue. Transgenic carrot callus and tobacco plants possessing a novel StSn1 gene coding for a cysteine-rich snakin-1 polypeptide were obtained after Agrobacterium-mediated transformation. The presence of the StSn1 gene and its expression were confirmed by polymerase chain reactions using plant DNA and cDNA as templates for the amplification of the transgenes. Raman measurements were taken from lyophilized GM carrot callus tissue, fresh GM tobacco leaves, and from seeds produced by GM tobacco plants as well as from the nontransformed controls. Cluster analysis applied to the obtained spectra allowed clear separation of the GM samples expressing the StSn1 gene and the nontransformed control to distinct groups. Such discrimination was achieved only when wavenumber ranges around 500 cm (-1) were analyzed. The results indicate that discrimination between the GM and non-GM materials was related to S-S stretching vibrations in snakin-1, as it contained six sulfur bridges. Other introduced genes, neomycine phosphotransferase ( nptII) and Chitinase ( chit36), did not cause any detectable changes by Raman spectroscopy in plant tissue. This is the first report on the use of Raman spectroscopy for a nondestructive analysis of GM plant material expressing the gene coding for a cysteine-rich polypeptide.
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Affiliation(s)
- Rafal Baranski
- Department of Genetics, Plant Breeding, and Seed Science, Agricultural University of Krakow, Al. 29 Listopada 54, 31-425 Krakow, Poland.
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