Repellent effect of microencapsulated essential oil in lotion formulation against mosquito bites
Background & objectives: Many essential oils have been reported as natural sources of insect repellents; however, due to high volatility, they present low repellent effect. Formulation technique by using microencapsulation enables to control the volatility of essential oil and thereby extends th...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wolters Kluwer Medknow Publications
2017-01-01
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| Series: | Journal of Vector Borne Diseases |
| Subjects: | |
| Online Access: | http://www.jvbd.org/article.asp?issn=0972-9062;year=2017;volume=54;issue=1;spage=44;epage=53;aulast=Misni |
| _version_ | 1818526003899662336 |
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| author | Norashiqin Misni Zurainee Mohamed Nor Rohani Ahmad |
| author_facet | Norashiqin Misni Zurainee Mohamed Nor Rohani Ahmad |
| author_sort | Norashiqin Misni |
| collection | DOAJ |
| description | Background & objectives: Many essential oils have been reported as natural sources of insect repellents; however, due to high volatility, they present low repellent effect. Formulation technique by using microencapsulation enables to control the volatility of essential oil and thereby extends the duration of repellency. In this study, the effectiveness of microencapsulated essential oils of Alpinia galanga, Citrus grandis and C. aurantifolia in the lotion formulations were evaluated against mosquito bites.
Methods: Essential oils and W,W-Diethyl-3-methylbenzamide (DEET) were encapsulated by using interfacial precipitation techniques before incorporation into lotion base to form microencapsulated (ME) formulation. The pure essential oil and DEET were also prepared into lotion base to produce non-encapsulated (NE) formulation. All the prepared formulations were assessed for their repellent activity against Culex quinquefasciatus under laboratory condition. Field evaluations also were conducted in three different study sites in Peninsular Malaysia. In addition, Citriodiol® (Mosiquard®) and citronella-based repellents (KAPS®, MozAway® and BioZ Natural®) were also included for comparison.
Results: In laboratory conditions, the ME formulations of the essential oils showed no significant difference with regard to the duration of repellent effect compared to the microencapsulated DEET used at the highest concentration (20%). It exhibited >98% repellent effect for duration of 4 h (p = 0.06). In the field conditions, these formulations demonstrated comparable repellent effect (100% for a duration of 3 h) to Citriodiol® based repellent (Mosiguard®) (p = 0.07). In both test conditions, the ME formulations of the essential oils presented longer duration of 100% repellent effect (between 1 and 2 h) compared to NE formulations.
Interpretation & conclusion: The findings of the study demonstrate that the application of the microencapsulation technique during the preparation of the formulations significantly increases the duration of the repellent effect of the essential oils, suggesting that the ME formulation of essential oils have potential to be commercialized as an alternative plant-based repellent in the market against the mosquitoes. |
| first_indexed | 2024-12-11T06:17:02Z |
| format | Article |
| id | doaj.art-d9530a7acc864737ab416093920aea09 |
| institution | Directory Open Access Journal |
| issn | 0972-9062 |
| language | English |
| last_indexed | 2024-12-11T06:17:02Z |
| publishDate | 2017-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Journal of Vector Borne Diseases |
| spelling | doaj.art-d9530a7acc864737ab416093920aea092022-12-22T01:17:57ZengWolters Kluwer Medknow PublicationsJournal of Vector Borne Diseases0972-90622017-01-015414453Repellent effect of microencapsulated essential oil in lotion formulation against mosquito bitesNorashiqin MisniZurainee Mohamed NorRohani AhmadBackground & objectives: Many essential oils have been reported as natural sources of insect repellents; however, due to high volatility, they present low repellent effect. Formulation technique by using microencapsulation enables to control the volatility of essential oil and thereby extends the duration of repellency. In this study, the effectiveness of microencapsulated essential oils of Alpinia galanga, Citrus grandis and C. aurantifolia in the lotion formulations were evaluated against mosquito bites. Methods: Essential oils and W,W-Diethyl-3-methylbenzamide (DEET) were encapsulated by using interfacial precipitation techniques before incorporation into lotion base to form microencapsulated (ME) formulation. The pure essential oil and DEET were also prepared into lotion base to produce non-encapsulated (NE) formulation. All the prepared formulations were assessed for their repellent activity against Culex quinquefasciatus under laboratory condition. Field evaluations also were conducted in three different study sites in Peninsular Malaysia. In addition, Citriodiol® (Mosiquard®) and citronella-based repellents (KAPS®, MozAway® and BioZ Natural®) were also included for comparison. Results: In laboratory conditions, the ME formulations of the essential oils showed no significant difference with regard to the duration of repellent effect compared to the microencapsulated DEET used at the highest concentration (20%). It exhibited >98% repellent effect for duration of 4 h (p = 0.06). In the field conditions, these formulations demonstrated comparable repellent effect (100% for a duration of 3 h) to Citriodiol® based repellent (Mosiguard®) (p = 0.07). In both test conditions, the ME formulations of the essential oils presented longer duration of 100% repellent effect (between 1 and 2 h) compared to NE formulations. Interpretation & conclusion: The findings of the study demonstrate that the application of the microencapsulation technique during the preparation of the formulations significantly increases the duration of the repellent effect of the essential oils, suggesting that the ME formulation of essential oils have potential to be commercialized as an alternative plant-based repellent in the market against the mosquitoes.http://www.jvbd.org/article.asp?issn=0972-9062;year=2017;volume=54;issue=1;spage=44;epage=53;aulast=MisniCitriodiol®; citronella; essential oil; formulation; microencapsulation; repellent |
| spellingShingle | Norashiqin Misni Zurainee Mohamed Nor Rohani Ahmad Repellent effect of microencapsulated essential oil in lotion formulation against mosquito bites Journal of Vector Borne Diseases Citriodiol®; citronella; essential oil; formulation; microencapsulation; repellent |
| title | Repellent effect of microencapsulated essential oil in lotion formulation against mosquito bites |
| title_full | Repellent effect of microencapsulated essential oil in lotion formulation against mosquito bites |
| title_fullStr | Repellent effect of microencapsulated essential oil in lotion formulation against mosquito bites |
| title_full_unstemmed | Repellent effect of microencapsulated essential oil in lotion formulation against mosquito bites |
| title_short | Repellent effect of microencapsulated essential oil in lotion formulation against mosquito bites |
| title_sort | repellent effect of microencapsulated essential oil in lotion formulation against mosquito bites |
| topic | Citriodiol®; citronella; essential oil; formulation; microencapsulation; repellent |
| url | http://www.jvbd.org/article.asp?issn=0972-9062;year=2017;volume=54;issue=1;spage=44;epage=53;aulast=Misni |
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