Shelf life comparison study of encapsulated and non-encapsulated jasmine flower's extract

Lim, Yee Mei (2018) Shelf life comparison study of encapsulated and non-encapsulated jasmine flower's extract. [Project Paper] (Submitted)

Text lp FK 2018 4.pdf Download (7MB)

Abstract

Jasmine fragrance consists of thermal-sensitive chemical compounds such as linalool, famesene and benzyl acetate that are volatile and easily degrade. Therefore, nonthermal solidification method - electrospray is preferred when compare to the thermalassisted atomization technique i.e spray drying that can cause thermal degradation of the atomized flower's compounds. Electrospray is a method of liquid atomization by means of electrical force that involved the mechanisms of solvent evaporation and coulomb fission in order to produce solidified jasmine's compounds powders. The parameters of jasmine compound concentration (wt%) in water and relative humidity of surrounding are varied in order to determine the drying rate of the atomized droplet . The studied indicated that the drying rate is proportional to the psychrometric properties of the electrospray system. Prior to the sensitivity of the chemical compounds, the atomized droplets are encapsulated with β-cyclodextrin (β-CD) and the effectiveness of the electrospraying process to solidify the droplet is compared with the non-encapsulated ones. The field Emission Scanning Electron Microscopy (FESEM), Fourier Transform Infrared Spectroscopy (FTIR) and thermogravimetric analysis (TGA) were used to verify the occurrence of encapsulation. Morphology of the encapsulated bioactive compounds was found to be in the spherical crystal lattice from and free from agglomeration. The FTIR also showed that the encapsulated droplets were consisting of identical peaks of β-CD and extracted jasmine compounds that indicates the occurrence of the encapsulation process. In the TGA curve, the shifting of thermal degradation of the encapsulated droplet to higher temperature profile compared to the non-encapsulated ones also verified the ocurrence of inclusion complex between the compounds and the β-CD. The shelf life and stability of encapsulated jasmine compound and non-encapsulated ones was compared in the close system storage for 28 days. The loading capacity of the encapsulated bioactive compounds was found to be decreasing week by week but the difference is not very significant. As a conclusion, this study is important to be carried out in order to find an effective method to enhance and -prolong the shelf life of the bioactive compounds using the electrospray process.

Item Type:	Project Paper
Faculty:	Faculty of Engineering
Depositing User:	Ms Siti Mariam Giman
Date Deposited:	27 Oct 2023 07:36
Last Modified:	27 Oct 2023 07:36
URI:	http://psaspb.upm.edu.my/id/eprint/1592

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