دورية أكاديمية
Modeling of thermal degradation kinetics of the C-glucosyl xanthone mangiferin in an aqueous model solution as a function of pH and temperature and protective effect of honeybush extract matrix.
| العنوان: | Modeling of thermal degradation kinetics of the C-glucosyl xanthone mangiferin in an aqueous model solution as a function of pH and temperature and protective effect of honeybush extract matrix. |
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| المؤلفون: | Beelders T; Plant Bioactives Group, Post-Harvest and Agro-Processing Technologies, Agricultural Research Council (ARC) Infruitec-Nietvoorbij, Private Bag X5026, Stellenbosch 7599, South Africa; Department of Food Science, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa., de Beer D; Plant Bioactives Group, Post-Harvest and Agro-Processing Technologies, Agricultural Research Council (ARC) Infruitec-Nietvoorbij, Private Bag X5026, Stellenbosch 7599, South Africa; Department of Food Science, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa. Electronic address: DBeerD@arc.agric.za., Kidd M; Centre for Statistical Consultation, Department of Statistics and Actuarial Sciences, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa., Joubert E; Plant Bioactives Group, Post-Harvest and Agro-Processing Technologies, Agricultural Research Council (ARC) Infruitec-Nietvoorbij, Private Bag X5026, Stellenbosch 7599, South Africa; Department of Food Science, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa. |
| المصدر: | Food research international (Ottawa, Ont.) [Food Res Int] 2018 Jan; Vol. 103, pp. 103-109. Date of Electronic Publication: 2017 Oct 14. |
| نوع المنشور: | Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Published on behalf of the Canadian Institute of Food Science and Technology by Elsevier Applied Science Country of Publication: Canada NLM ID: 9210143 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-7145 (Electronic) Linking ISSN: 09639969 NLM ISO Abbreviation: Food Res Int Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Ottawa, Ontario, Canada : Published on behalf of the Canadian Institute of Food Science and Technology by Elsevier Applied Science, c1992- |
| مواضيع طبية MeSH: | Cyclopia Plant*/chemistry , Hot Temperature* , Models, Chemical*, Food Contamination/*prevention & control , Food Handling/*methods , Sterilization/*methods , Xanthones/*chemistry, Chromatography, High Pressure Liquid ; Hydrogen-Ion Concentration ; Kinetics ; Nonlinear Dynamics ; Spectrometry, Mass, Electrospray Ionization ; Tandem Mass Spectrometry ; Xanthones/isolation & purification |
| مستخلص: | Mangiferin, a C-glucosyl xanthone, abundant in mango and honeybush, is increasingly targeted for its bioactive properties and thus to enhance functional properties of food. The thermal degradation kinetics of mangiferin at pH3, 4, 5, 6 and 7 were each modeled at five temperatures ranging between 60 and 140°C. First-order reaction models were fitted to the data using non-linear regression to determine the reaction rate constant at each pH-temperature combination. The reaction rate constant increased with increasing temperature and pH. Comparison of the reaction rate constants at 100°C revealed an exponential relationship between the reaction rate constant and pH. The data for each pH were also modeled with the Arrhenius equation using non-linear and linear regression to determine the activation energy and pre-exponential factor. Activation energies decreased slightly with increasing pH. Finally, a multi-linear model taking into account both temperature and pH was developed for mangiferin degradation. Sterilization (121°C for 4min) of honeybush extracts dissolved at pH4, 5 and 7 did not cause noticeable degradation of mangiferin, although the multi-linear model predicted 34% degradation at pH7. The extract matrix is postulated to exert a protective effect as changes in potential precursor content could not fully explain the stability of mangiferin. (Copyright © 2017 Elsevier Ltd. All rights reserved.) |
| فهرسة مساهمة: | Keywords: Mangiferin; Mangiferin (PubChem CID: 5281647); Matrix protective effect; Temperature dependence; Thermal degradation kinetics modeling; pH dependence |
| المشرفين على المادة: | 0 (Xanthones) 1M84LD0UMD (mangiferin) |
| تواريخ الأحداث: | Date Created: 20180202 Date Completed: 20191015 Latest Revision: 20191015 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1016/j.foodres.2017.10.020 |
| PMID: | 29389595 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1873-7145 |
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| DOI: | 10.1016/j.foodres.2017.10.020 |