RELEASE KINETICS OF CYMBOPOGON CITRATUS ESSENTIAL OIL FROM STARCH BEADS

Isaiah Itodo 12 PAGES (3751 WORDS) Essay/Paper
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ABSTRACT


The essential oil of Cymbopogon citratus was extracted using a green method (i.e. essential oil still), encapsulated into cassava starch matrix using sodium alginate as a binder. The encapsulated sodium alginate starch beads were characterized using Scanning Electron Microscope (SEM) and Fourier Transform Infrared Spectrophotometer (FTIR), release kinetics of the oil was monitored by UV-Visible Spectrophotometry from two (2) aqueous media, buffer of pH 4 and pH 9. The result for SEM showed the sodium alginate starch beads were spherical in shape, average radius of 5 µm, modal area of 0.10 µm2 and average size of 852.28 nm and were good absorbent of essential oil in which its volatility can be entrapped. Release kinetics showed it was at its maximum peak at 2 hours and data obtained spectrophotometrically were further fitted to the various Kinetics Models such as First Order, Pseudo Second Order, Zero Order and Higuchi Order Kinetics Model from which their equations gave (R2= 0.9991, 0.9188) (K= 0.1547, 0.0738), (R2= 0.9962, 0.9201) (K= -0.0071, -0.0038), (R2= 0.9929, 0.8059) (K= 0.0065, 0.0247) and (R2= 0.8389, 0.7216) (K= 0.033, 0.0392), respectively, from the two (2) aqueous media, buffer of pH 4 and pH 9, and it followed the First Order Kinetic Model, which indicated the absorption of the encapsulated essential oil into the porous material of the sodium alginate starch beads and its FTIR showed the functionalities such as OH, CO, CHO, C=C, =C-H and C-H present conformed to the structure of citral, starch and algin.


 


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APA

Isaiah, I (2019). RELEASE KINETICS OF CYMBOPOGON CITRATUS ESSENTIAL OIL FROM STARCH BEADS. Afribary.com: Retrieved September 18, 2019, from https://afribary.com/works/release-kinetics-of-cymbopogon-citratus-essential-oil-from-starch-beads

MLA 8th

Itodo, Isaiah. "RELEASE KINETICS OF CYMBOPOGON CITRATUS ESSENTIAL OIL FROM STARCH BEADS" Afribary.com. Afribary.com, 03 Sep. 2019, https://afribary.com/works/release-kinetics-of-cymbopogon-citratus-essential-oil-from-starch-beads . Accessed 18 Sep. 2019.

MLA7

Itodo, Isaiah. "RELEASE KINETICS OF CYMBOPOGON CITRATUS ESSENTIAL OIL FROM STARCH BEADS". Afribary.com, Afribary.com, 03 Sep. 2019. Web. 18 Sep. 2019. < https://afribary.com/works/release-kinetics-of-cymbopogon-citratus-essential-oil-from-starch-beads >.

Chicago

Itodo, Isaiah. "RELEASE KINETICS OF CYMBOPOGON CITRATUS ESSENTIAL OIL FROM STARCH BEADS" Afribary.com (2019). Accessed September 18, 2019. https://afribary.com/works/release-kinetics-of-cymbopogon-citratus-essential-oil-from-starch-beads