Characterization and antimicrobial activity of microencapsulated citral with dextrin by spray drying
Aim of this work was to evaluate the antimicrobial activity and physical characteristics of citral microencapsulated with dextrin (Dx) by spray drying. The encapsulation was optimized using response surface methodology (RSM), maximizing yield and efficiency, considering as independent variables the...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-04-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844021008409 |
| _version_ | 1819131162757431296 |
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| author | Ives Yoplac Luis Vargas Paz Robert Alyssa Hidalgo |
| author_facet | Ives Yoplac Luis Vargas Paz Robert Alyssa Hidalgo |
| author_sort | Ives Yoplac |
| collection | DOAJ |
| description | Aim of this work was to evaluate the antimicrobial activity and physical characteristics of citral microencapsulated with dextrin (Dx) by spray drying. The encapsulation was optimized using response surface methodology (RSM), maximizing yield and efficiency, considering as independent variables the citral:Dx ratio (1:5 and 1:20) and the inlet air temperature (120 and 200 °C). Yield and efficiency under optimal conditions were 71.9% and 99.9%, respectively. Antimicrobial activity against Escherichia coli, Salmonella enterica, Staphylococcus aureus and Bacillus cereus of the citral microparticles obtained under optimal conditions and of free citral was evaluated using the disk diffusion methodology. Both compounds showed a broad spectrum inhibitory effect, being Escherichia coli and Bacillus cereus the most sensitive microorganisms. The inhibition ratio varied between 55 and 75%, and the antibacterial activity was maintained after microencapsulation. The minimum inhibitory concentrations of free citral were above 0.8 mg/mL. The optimal citral microparticles showed acceptable physicochemical characteristics and broad-spectrum antimicrobial activity. Polymer and emulsifier used in microencapsulation protected the functional activity of citral, thus suggesting that these microparticles could be used in the design of antimicrobial food systems to extend the shelf life of perishable foods. |
| first_indexed | 2024-12-22T09:11:08Z |
| format | Article |
| id | doaj.art-8aafc86e260940d8b313470a6cad3d40 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-12-22T09:11:08Z |
| publishDate | 2021-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-8aafc86e260940d8b313470a6cad3d402022-12-21T18:31:26ZengElsevierHeliyon2405-84402021-04-0174e06737Characterization and antimicrobial activity of microencapsulated citral with dextrin by spray dryingIves Yoplac0Luis Vargas1Paz Robert2Alyssa Hidalgo3Facultad de Ingeniería Zootecnista, Agronegocios y Biotecnología, Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas, Chachapoyas 01001, Peru; Escuela de Posgrado, Programa Doctoral en Ciencia de Alimentos, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima 12, Peru; Corresponding author.Facultad de Industrias Alimentarias, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima 12, PeruDpto. Ciencia de los Alimentos y Tecnología Química, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 133, Santiago, ChileDepartment of Food, Environmental and Nutritional Sciences (DEFENS), University of Milan, via Celoria 2, 20133, Milan, ItalyAim of this work was to evaluate the antimicrobial activity and physical characteristics of citral microencapsulated with dextrin (Dx) by spray drying. The encapsulation was optimized using response surface methodology (RSM), maximizing yield and efficiency, considering as independent variables the citral:Dx ratio (1:5 and 1:20) and the inlet air temperature (120 and 200 °C). Yield and efficiency under optimal conditions were 71.9% and 99.9%, respectively. Antimicrobial activity against Escherichia coli, Salmonella enterica, Staphylococcus aureus and Bacillus cereus of the citral microparticles obtained under optimal conditions and of free citral was evaluated using the disk diffusion methodology. Both compounds showed a broad spectrum inhibitory effect, being Escherichia coli and Bacillus cereus the most sensitive microorganisms. The inhibition ratio varied between 55 and 75%, and the antibacterial activity was maintained after microencapsulation. The minimum inhibitory concentrations of free citral were above 0.8 mg/mL. The optimal citral microparticles showed acceptable physicochemical characteristics and broad-spectrum antimicrobial activity. Polymer and emulsifier used in microencapsulation protected the functional activity of citral, thus suggesting that these microparticles could be used in the design of antimicrobial food systems to extend the shelf life of perishable foods.http://www.sciencedirect.com/science/article/pii/S2405844021008409EncapsulationGram-negativeGram-positiveMorphologySpray drying |
| spellingShingle | Ives Yoplac Luis Vargas Paz Robert Alyssa Hidalgo Characterization and antimicrobial activity of microencapsulated citral with dextrin by spray drying Heliyon Encapsulation Gram-negative Gram-positive Morphology Spray drying |
| title | Characterization and antimicrobial activity of microencapsulated citral with dextrin by spray drying |
| title_full | Characterization and antimicrobial activity of microencapsulated citral with dextrin by spray drying |
| title_fullStr | Characterization and antimicrobial activity of microencapsulated citral with dextrin by spray drying |
| title_full_unstemmed | Characterization and antimicrobial activity of microencapsulated citral with dextrin by spray drying |
| title_short | Characterization and antimicrobial activity of microencapsulated citral with dextrin by spray drying |
| title_sort | characterization and antimicrobial activity of microencapsulated citral with dextrin by spray drying |
| topic | Encapsulation Gram-negative Gram-positive Morphology Spray drying |
| url | http://www.sciencedirect.com/science/article/pii/S2405844021008409 |
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