Microencapsulation of Citrus Hystrix essential oil by Gelatin B/Chitosan complex coacervation technique


Citation

Siti Afiqah ‘Aisyah Murtadza, . and Nurul Asyikin Md Zaki, . and Junaidah Jai, . and Fazlena Hamzah, . and Nur Suhanawati Ashaari, . and Dewi Selvia Fardhyanti, . and Megawati, . and Nadya Alfa Cahaya Imani, . (2024) Microencapsulation of Citrus Hystrix essential oil by Gelatin B/Chitosan complex coacervation technique. Pertanika Journal of Science & Technology (Malaysia), 32 (2). 599 -621. ISSN 2231-8526

Abstract

Complex coacervation is an encapsulation technique used to preserve the bio functionality of essential oils as well as provide controlled release. In this present work, encapsulation of Citrus Hystrix essential oil (CHEO) was formed by a complex coacervation technique with Gelatin-B (Gel B) and Chitosan (Chi) as the capping materials. The suitable encapsulation formulation was investigated as a function of pH and wall ratio using Zeta Potential analysis. Turbidity measurement and coacervate yield were carried out to confirm the suitable condition. Total Phenolic Content (TPC) was used to obtain the encapsulation efficiency (EE%) of the process. Results show that the suitable condition for coacervate formation between Gel B and Chi ratio of 5:1 was at pH 5.8, which produced a high encapsulation efficiency of 94.81% ± 2.60. FTIR analysis validates the formation of coacervate as well as the encapsulated CHEO. The encapsulates obtained were spherical and dominated by 194.557 um particles. The CHEO was successfully encapsulated by a complex coacervation method.


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Abstract

Complex coacervation is an encapsulation technique used to preserve the bio functionality of essential oils as well as provide controlled release. In this present work, encapsulation of Citrus Hystrix essential oil (CHEO) was formed by a complex coacervation technique with Gelatin-B (Gel B) and Chitosan (Chi) as the capping materials. The suitable encapsulation formulation was investigated as a function of pH and wall ratio using Zeta Potential analysis. Turbidity measurement and coacervate yield were carried out to confirm the suitable condition. Total Phenolic Content (TPC) was used to obtain the encapsulation efficiency (EE%) of the process. Results show that the suitable condition for coacervate formation between Gel B and Chi ratio of 5:1 was at pH 5.8, which produced a high encapsulation efficiency of 94.81% ± 2.60. FTIR analysis validates the formation of coacervate as well as the encapsulated CHEO. The encapsulates obtained were spherical and dominated by 194.557 um particles. The CHEO was successfully encapsulated by a complex coacervation method.

Additional Metadata

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Item Type: Article
AGROVOC Term: microencapsulation
AGROVOC Term: Citrus hystrix
AGROVOC Term: gelatin
AGROVOC Term: essential oils
AGROVOC Term: protective coatings
AGROVOC Term: chemical analysis
AGROVOC Term: spectroscopy
AGROVOC Term: phenolic compounds
AGROVOC Term: scientists
Geographical Term: Malaysia
Depositing User: Ms. Azariah Hashim
Date Deposited: 27 Nov 2025 09:28
Last Modified: 27 Nov 2025 09:28
URI: http://webagris.upm.edu.my/id/eprint/2784

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