EXTRACTION OF ESSENTIAL OIL FROM PEEL AND RESIDUE OF SQUEEZED KALAMANSI (Citrus microcarpa) ORANGE WATER
Dyah Fitriani*, Devi Ratnawati* and Dewi Sundari*
*Chemistry Department, Faculty of Mathematics and Natural Sciences Universitas Bengkulu, Jl. WR Supratman, Bengkulu 38122, Indonesia
Abstract
A research on the extraction of essential oil from the peel and residue of squeezed kalamansi orange water has been carried out. This research aims to determine the yield resulting from the extraction of essential oil from the peel and residue of squeezed kalamansi orange water.Then,the quality of essential oil produced will be determined including specific gravity, refractive index as well as identification of the components of chemical compounds contained in essential oil by using GC-MS.The extraction of essential oil was done by steam distillation and water distillation. The comparison between samples and aquades was 1:1 and 2:1 either for the peel sample or the sample of residue of squeezed kalamansi orange water.From the results of extraction,the essential oil which was clearly colorless yellowish with a distinctive odor of kalamansi orange was obtained.The yield of essential oil produced from the residue squeezed kalamansi orange water at a ratio of 1:1 and 2:1 respectively was 1.34 % and 1.4 %, while that from the peel with a ratio of 1:1 and 2:1 respectively was 0.0294 % and 0.0258 %.The result of characterization using GC-MS showed the main component of essential oil was limonene with a content of 98% either from the peel or from the residue of squeezed kalamansi orange water. While, the specific gravity obtained ranged between 0.824 – 0.838 g/mL and the refractive index ranged between 1.4758 – 1.4765.
Keywords: Kalamansi Orange, Essential oil, GC-MS
Topic: Chemistry