GC-MASS ANALYSIS OF BITTER ORANGE PETITGRAIN BIGARADE OIL PRODUCED IN EGYPT AND STORED UNDER DIFFERENT TEMPERATURES
2005
A Abd El-Rashid,
Identification of bitter orange petitgrain bigarade oil produced in Egypt was studied by GC/MS on carbowax – 20M colum. It was found that linalyl acetate, which represented more than 25% of the whole oil was considered to be the major component of ester fraction; while linalool, which ranged from (30-33.7%) was the main alcohol components. On the other hand, limonene, (E)-β-ocimene,myrcene and β-pinene were the highest monoterpene hydrocarbons. Room temperature (about 20°C), 4 and -18°C were used for storing the samples for 6 mounths. No pronounced effect was noticed on the composition of petitgrain oil with the exception of slight effect on the color, acid number and solubility (v/v 70% alcohol) when samples stored at 20°C. Statistical analyses proved that 4 ºC could be considered the best fit temperature at which no significant changes occur in both the major chemical analyses and the main identified volatile constituents.
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