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Luo X, Lu J, Wu Y, Duan W, An F, Huang Q, Chen L, Wei S. Reducing the potential allergenicity of amandin through binding to (-)-epigallocatechin gallate. Food Chem X 2022; 16:100482. [PMID: 36304206 PMCID: PMC9594120 DOI: 10.1016/j.fochx.2022.100482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 10/09/2022] [Accepted: 10/18/2022] [Indexed: 11/05/2022] Open
Abstract
Amandin (AMP) binding to EGCG changed protein structure. AMP bound to EGCG primarily through glutamate and cysteine residues. Alkaline and free radical methods dented AMP allergenic, but the principles differed.
Potential allergenicity of amandin was reduced by binding amandin with (−)-epigallocatechin gallate (EGCG) via alkaline, free radical, ultrasound-assisted alkaline, and ultrasound-assisted free radical methods. These results of total phenol content, free sulfhydryl group, free amino group, surface hydrophobicity, and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) indicated that amandin might be covalently bound to EGCG through reactive groups such as sulfhydryl and amino groups, or non-covalently through hydrophobic interactions. Fourier transformed infrared (FT-IR) spectroscopy and fluorescence spectroscopy revealed structural changes of amandin-EGCG conjugate, which also caused significant reduction in potential allergenicity of amandin. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) found that amandin bound to EGCG mainly through cysteine and glutamate residues, and linear epitope for amandin was reduced. This provided a new method and theoretical basis of hypoallergenic almond food.
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Affiliation(s)
- Xin Luo
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Jiankang Lu
- Production & Construction Group Key Laboratory of Special Agricultural Products Further Processing in Southern Xinjiang, Xinjiang Province, 843300, China
| | - Yongyan Wu
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Wenshan Duan
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Fengping An
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Qun Huang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China,Institute for Egg Science and Technology, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China,Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education & Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang 550004, Guizhou, China,Corresponding authors at: Guizhou Medical University, Gui 'an New District, Guizhou Province 550025, China.
| | - Lei Chen
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China,Corresponding authors at: Guizhou Medical University, Gui 'an New District, Guizhou Province 550025, China.
| | - Shaofeng Wei
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China,Corresponding authors at: Guizhou Medical University, Gui 'an New District, Guizhou Province 550025, China.
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Kalčáková L, Pospiech M, Tremlová B, Javůrková Z, Chernukha I. Development of Immunohistochemical Methods for Casein Detection in Meat Products. Foods 2020; 10:E28. [PMID: 33374134 PMCID: PMC7824696 DOI: 10.3390/foods10010028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/19/2020] [Accepted: 12/22/2020] [Indexed: 11/30/2022] Open
Abstract
To increase production efficiency of meat products, milk protein additives are often used. Despite a number of advantages, use of dairy ingredients involves a certain risk, namely the allergenic potential of milk proteins. A number of methods have been developed to detect milk-origin raw materials in foodstuffs, including immunological reference methods. This study presents newly developed immunohistochemical (IHC) methods for casein detection in meat products. Casein was successfully detected directly in meat products where sensitivity was determined at 1.21 and specificity at 0.28. The results obtained from the IHC were compared with the Enzyme-Linked Immuno Sorbent Assay (ELISA) and there was no statistically significant difference between the IHC and ELISA methods (p > 0.05). The correspondence between the methods was 72% in total. The highest correspondence was reached in frankfurters (90%), the lowest in canned pâté (44%).
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Affiliation(s)
- Ludmila Kalčáková
- Department of Plant Origin Foodstuffs Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, 612 24 Brno, Czech Republic; (L.K.); (M.P.); (B.T.)
| | - Matej Pospiech
- Department of Plant Origin Foodstuffs Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, 612 24 Brno, Czech Republic; (L.K.); (M.P.); (B.T.)
| | - Bohuslava Tremlová
- Department of Plant Origin Foodstuffs Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, 612 24 Brno, Czech Republic; (L.K.); (M.P.); (B.T.)
| | - Zdeňka Javůrková
- Department of Plant Origin Foodstuffs Hygiene and Technology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, 612 24 Brno, Czech Republic; (L.K.); (M.P.); (B.T.)
| | - Irina Chernukha
- The V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, Talalikhina ul. 26, 109316 Moscow, Russia;
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Upadhyay E, Mohammad AlMass AA, Dasgupta N, Rahman S, Kim J, Datta M. Assessment of Occupational Health Hazards Due to Particulate Matter Originated from Spices. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16091519. [PMID: 31035724 PMCID: PMC6538991 DOI: 10.3390/ijerph16091519] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/18/2019] [Accepted: 04/23/2019] [Indexed: 11/16/2022]
Abstract
Spices have been known for their various health activities; however, they also possess the allergic potential for the respiratory system and the skin as they are fine particulate matter. Persons involved in spice agriculture and food industries are at greater risk since they are exposed to a considerable amount of combustible dust, which may be the cause of fire and explosion and adversely affect the health. These workers may experience allergy, long-term and short-term respiratory issues including occupational asthma, dermatitis, etc. Some spices induce T cell-based inflammatory reaction upon contact recognition of the antigen. Antigen Presenting Cells (APC) on binding to the causative metabolite results in activation of macrophages by allergen cytokine interleukin (IL)-12 and tumor necrosis factor-beta (TNF). Cross-reactivity for protein allergens is another factor which seems to be a significant trigger for the stimulation of allergic reactions. Thus, it was imperative to perform a systematic review along with bioinformatics based representation of some evident allergens has been done to identify the overall conservation of epitopes. In the present manuscript, we have covered a multifold approach, i.e., to categorize the spice particles based on a clear understanding about nature, origin, mechanisms; to assess metabolic reactions of the particles after exposure as well as knowledge on the conditions of exposure along with associated potential health effects. Another aim of this study is to provide some suggestions to prevent and to control the exposure up to some extent.
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Affiliation(s)
- Era Upadhyay
- Amity institute of Biotechnology, Amity University Rajasthan, Jaipur, Rajasthan 302 002, India.
| | - Afnan Ahmad Mohammad AlMass
- Emergency Medicine Department, King Saud University Medical City, King Saud University, Riyadh 11321, Saudi Arabia.
| | - Nandita Dasgupta
- Department of Biotechnology, Institute of Engineering and Technology, Dr. APJ Abdul Kalam Technical University, Lucknow, Uttar Pradesh 226031, India.
| | - Safikur Rahman
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, 712-749, Korea.
| | - Jihoe Kim
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, 712-749, Korea.
| | - Manali Datta
- Amity institute of Biotechnology, Amity University Rajasthan, Jaipur, Rajasthan 302 002, India.
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