| dc.description.abstract | Orange is the fifth common fruit in the world. Orange peels essential oil is by-product
during obtaining citrus fruit process, which are functional in cosmetics, food, or
pharmaceutical due to active ingredient – Limonene. This research was carried out to
investigate products of orange peels essential oil with N-bromosuccinimide (NBS), Nchlorosuccinimide (NCS) and peroxycarboxylic acid that can enhance the value of
orange peels essential oil. That oil was extracted by Microwave machine with 1.857%
yield and 98.3% of Limonene. Three compounds was created including [2-bromo-4-
(1-bromo-2-hydroxypropan-2-yl)-1-methylcyclohexan-1-ol] – 1, Limonene
bromohydrin], [2-chloro-4-(1-chloro-2-hydroxypropan-2-yl)-1-methylcyclohexan-1-
ol] – 2, Limonene chlorohydrin], and [1-methyl-4-(2-methyloxiran-2-yl)-7-
oxabicyclo[4.1.0]heptane] – 3, Limonene di-epoxide] with 54.57%, 51.00%, and
54.25% yield, respectively. Those substances were tested antioxidant by DPPH assay
and antibacterial by evaluating Minimum Inhibitory Concentration (MIC) with
Staphylococcus aureus and Escherichia coli. The result of both tests had shown better
data, compared to original reagent – Limonene. Therefore, it is concluded that orange
peels essential oil can be used as a source of Limonene for reaction, and
transformation compound from Limonene are higher biological activity than
Limonene. | en_US |
