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Preparation and Characterization of Gellan Gum Fragrance<br />

Nor Suhaini binti Abd Rahman<br />

Supervisor: Assoc. Prof Dr Khairul Anuar Bin Mat Amin<br />

Bachelor of Science (Chemical Sciences)<br />

School of Fundamental Sciences<br />

This study produces hydrogel fragrance by using gellan gum (GG). GG hydrogels were<br />

prepared by cross linked with calcium chloride and the different percentages of lemon<br />

essential oil. The mechanical performances and swelling of the hydrogels were<br />

examined. The mechanical performances of GG hydrogels containing less percentage<br />

of lemon essential oil (GGLemon-1%) required smallest volume to achieve optimum<br />

compression stress, compression strain and modulus compared to both GGLemon-2%<br />

and GGLemon-3%. Swelling ratios of GG hydrogels were increased upon addition of<br />

percentage of lemon essential oil. For odour test, GGLemon-2% shows the optimum<br />

result and can last for 1 month compared to others. In conclusion, gellan gum hydrogel<br />

is suitable to be applied as fragrance.<br />

430 | U M T U N D E R G R A D U A T E R E S E A R C H D A Y 2018

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