Experimental Study on Extraction of Limonene from Orange Peel by Steam Distillation
The extraction technology of limonene from fresh orange peel was optimized by steam distillation.The effects of orange peel crushing size,soaking time,inorganic additives and proportion of additives on the extraction rate of limonene were investigated by single factor experiment,and limonene samples were characterized by gas mass spectrometry and infrared spectroscopy.The results showed that the optimum extraction parameters of limonene by steam distillation were as follows:orange peel size 0.6 cm × 0.6 cm,soaking time 8 h,sodium carbonate addition ratio of 4％,extraction time 1 h.The bacteriostatic properties of limonene were tested by Oxford Cup method.The results showed that the minimum bacteriostatic concentration of limonene against Staphylococcus aureus was 1.25％o.
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