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Processing of orange peel essential oil

Visit:Date:2018/1/18 11:42:27

Citrus skin usually contains 2 to 3% essential oils. Essential oils are widely used in the food industry, chemical industry and medicine. Because the composition and proportion of various citrus essential oils are different and the aroma is not the same, the different varieties should be extracted separately.

(1) process flow

The selection of raw materials, soaking lime water, rinsing, pressing, filtration and separation, clarification and packaging.

(two) the main points of the process

1. selection of fresh and non mildew citrus peel, spread in the cool, ventilated and dry place.

2. limewater soaked citrus peel in lime water with a concentration of 7 ~ 8% (more than 12 pH). In order not to float the orange peel, the upper pressure mesh sieve plate. The soaking time is 16~24 hours, during which the soaking is two or three times and the soaking is even. The skin is yellow, no white heart, crisp and constant.

3. rinse the orange peel with lime water and rinse clean with liquid water. Remove and drain.

4. press will peel uniformly into the spiral oil press, pressure from orange peel oil. When discharging, it must be smooth and smooth. The pits must be grainy. When adding materials, we must open the nozzle and spray liquid (100 kg water, +1 kg sodium sulfate, +0.3 kg, sodium bicarbonate), pH value is 7~8, the amount is equal to the dry orange peel weight. The pH value is often adjusted in use. The 5. filter from the oil-water mixture by bag filter, remove paste residue. 6. the clarified and separated orange peel oil was stationary for 5~7 days at 5~10 C, so that the impurities would sink. Then use the Straw supernatant oil suction siphon through the funnel, vacuum filter paper or asbestos paper filter. The orange oil is yellow oily liquid, with sweet orange aroma, is lighter than water, insoluble in water, soluble in 7~10 times volume of 90% ethanol.

7. sealed storage will clarify the orange peel oil packed in brown glass bottles or pots, filled with as much as possible, stamped, and stearic wax seal, storage in the shade to prevent volatilization loss and deterioration.


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