Conditions to Prolonged Release of Microencapsulated Carvacrol on Alginate Films as Affected by Emulsifier Type and PH
Alginate from algal biomass is used as edible film and the incorporation of antimicrobial agents improves its performance to increase the shelf-life of fresh foods. However, environmental conditions and intrinsic properties of films influence their release. The aim of this study was to investigate t...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
|
| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2015/173193 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832562112894861312 |
|---|---|
| author | Silvia Matiacevich Natalia Riquelme María Lidia Herrera |
| author_facet | Silvia Matiacevich Natalia Riquelme María Lidia Herrera |
| author_sort | Silvia Matiacevich |
| collection | DOAJ |
| description | Alginate from algal biomass is used as edible film and the incorporation of antimicrobial agents improves its performance to increase the shelf-life of fresh foods. However, environmental conditions and intrinsic properties of films influence their release. The aim of this study was to investigate the effect of the concentration and type of encapsulating agent and pH of emulsions on the physical and antimicrobial properties of alginate-carvacrol films. Films containing alginate, carvacrol as antimicrobial agent, and Tween 20 or trehalose (0.25 and 0.75% w/w) as encapsulating agents were obtained from suspensions at pH 4 and pH 8. Physical characterization of emulsions and films and antimicrobial properties (E. coli and B. cinerea) was evaluated. Results showed that droplets size depended on trehalose concentration, but emulsion stability depended on pH and type of encapsulating agent, being more stable samples with trehalose at pH 4. Although films with Tween 20 presented the highest opacity, they showed the best antimicrobial properties at initial time; however, during storage time, they lost their activity before samples with trehalose and relative humidity (RH) was the principal factor to influence their release. Therefore, sample formulated with 0.25% trehalose at pH 4 and stored at 75% RH had the best potential as edible film for fresh fruits. |
| format | Article |
| id | doaj-art-620aac3eb6574f95862e5a8fb80e2647 |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-620aac3eb6574f95862e5a8fb80e26472025-02-03T01:23:27ZengWileyInternational Journal of Polymer Science1687-94221687-94302015-01-01201510.1155/2015/173193173193Conditions to Prolonged Release of Microencapsulated Carvacrol on Alginate Films as Affected by Emulsifier Type and PHSilvia Matiacevich0Natalia Riquelme1María Lidia Herrera2Departamento de Ciencia y Tecnología de los Alimentos, Facultad Tecnológica, Universidad de Santiago de Chile, Obispo Umaña 050, Estación Central, 9170201 Santiago, ChileDepartamento de Ciencia y Tecnología de los Alimentos, Facultad Tecnológica, Universidad de Santiago de Chile, Obispo Umaña 050, Estación Central, 9170201 Santiago, ChileInstituto de Tecnología en Polímeros y Nanotecnología ITPN (UBA-CONICET), Facultad de Ingeniería, Universidad de Buenos Aires, Avenida Las Heras 2214, Ciudad Autónoma de Buenos Aires, ArgentinaAlginate from algal biomass is used as edible film and the incorporation of antimicrobial agents improves its performance to increase the shelf-life of fresh foods. However, environmental conditions and intrinsic properties of films influence their release. The aim of this study was to investigate the effect of the concentration and type of encapsulating agent and pH of emulsions on the physical and antimicrobial properties of alginate-carvacrol films. Films containing alginate, carvacrol as antimicrobial agent, and Tween 20 or trehalose (0.25 and 0.75% w/w) as encapsulating agents were obtained from suspensions at pH 4 and pH 8. Physical characterization of emulsions and films and antimicrobial properties (E. coli and B. cinerea) was evaluated. Results showed that droplets size depended on trehalose concentration, but emulsion stability depended on pH and type of encapsulating agent, being more stable samples with trehalose at pH 4. Although films with Tween 20 presented the highest opacity, they showed the best antimicrobial properties at initial time; however, during storage time, they lost their activity before samples with trehalose and relative humidity (RH) was the principal factor to influence their release. Therefore, sample formulated with 0.25% trehalose at pH 4 and stored at 75% RH had the best potential as edible film for fresh fruits.http://dx.doi.org/10.1155/2015/173193 |
| spellingShingle | Silvia Matiacevich Natalia Riquelme María Lidia Herrera Conditions to Prolonged Release of Microencapsulated Carvacrol on Alginate Films as Affected by Emulsifier Type and PH International Journal of Polymer Science |
| title | Conditions to Prolonged Release of Microencapsulated Carvacrol on Alginate Films as Affected by Emulsifier Type and PH |
| title_full | Conditions to Prolonged Release of Microencapsulated Carvacrol on Alginate Films as Affected by Emulsifier Type and PH |
| title_fullStr | Conditions to Prolonged Release of Microencapsulated Carvacrol on Alginate Films as Affected by Emulsifier Type and PH |
| title_full_unstemmed | Conditions to Prolonged Release of Microencapsulated Carvacrol on Alginate Films as Affected by Emulsifier Type and PH |
| title_short | Conditions to Prolonged Release of Microencapsulated Carvacrol on Alginate Films as Affected by Emulsifier Type and PH |
| title_sort | conditions to prolonged release of microencapsulated carvacrol on alginate films as affected by emulsifier type and ph |
| url | http://dx.doi.org/10.1155/2015/173193 |
| work_keys_str_mv | AT silviamatiacevich conditionstoprolongedreleaseofmicroencapsulatedcarvacrolonalginatefilmsasaffectedbyemulsifiertypeandph AT nataliariquelme conditionstoprolongedreleaseofmicroencapsulatedcarvacrolonalginatefilmsasaffectedbyemulsifiertypeandph AT marialidiaherrera conditionstoprolongedreleaseofmicroencapsulatedcarvacrolonalginatefilmsasaffectedbyemulsifiertypeandph |