INVESTIGATING BETANIN STABILITY, RELEASE PROFILE AND ANTIOXIDANT ACTIVITY OF ETHYL CELLULOSE MICROPARTICLE CONTAINING BEETROOT (BETA VULGARIS, LINN) EXTRACT
Keywords:antioxidant, Beta vulgaris, ethyl cellulose, microparticle, release kinetic, stability
AbstractObjective: The objective of this research is to evaluate the ability of ethyl cellulose (EC) microparticle to protect the beetroot (Beta vulgaris, Linn) active substance. In addition, this research also investigates the effect of polymer concentration during microparticle preparation toward physical characteristics of microparticle, release profile of betanin as well as antioxidant activity of microparticle.
Methods: The microparticle was produced using emulsification method using various concentration of EC in organic phase and beetroot extract as the active substances. The physical characterisation was carried out including the imaging of microparticle using scanning electron microscope (SEM), zeta potential and encapsulation efficiency (EE). The stability test for active substance in microparticle was carried out at temperature 40ºC for 28 days. The release profile was evaluated using dissolution method and the antioxidant activity was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH).
Results: The result showed that the EC concentration strongly influenced the physical characteristics and EE of beetroot extract in microparticle. The microparticles also had good protection for betanin during storage. The release of active substance from microparticle following Higuchi kinetic. The highest antioxidant activity was found in the microparticle using EC 20%.
Conclusion: The EC microparticle is potential to protect the degradation of antioxidant substance from natural product. However, the physical properties, EE, the ability to prevent degradation of active substance, release rate and antioxidant activity, strongly influenced by the EC polymer concentration during microparticle preparation.
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Copyright (c) 2021 ANITA SUKMAWATI, SETYO NURWAINI, UMI BUDI RAHAYU, APRILIANA P. C. WIDAWAN, ANITA SAFITRI, NOVIA W. N. ASTRIA
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