Grapefruit essential oil: mainly exists in the exocarp, with a content of about 0.5%. In the past, it was extracted by cold pressing or distillation. Recently, Citrus Research Institute of Chinese Academy of Agricultural Sciences developed a special oil press for grapefruit, which was successfully used to extract grapefruit cold pressed oil.

Main efficacy of grapefruit essential oil

1, Beauty: It can moisturize the skin, balance the pH value of the skin, help the formation of collagen, moisturize, replenish water and whiten the skin, and fade fine lines. Don't be exposed to the sun after use.

2. Physically, it can prevent colds, has a good effect on the growth and repair of body tissues, can promote sweating, thus helping blocked skin to discharge toxins, and is helpful for oily, acne or dry skin. Stimulate bile secretion, help digest fat and relieve muscle pain. Dropping a few drops of grapefruit essential oil into the hot water for soaking feet can achieve the purpose of promoting blood circulation and dredging collaterals, and can also achieve the effect of removing beriberi and foot odor.

3. Psychological aspect: Sweet orange is one of the few essential oils that have been proved to have sedative effect. Sweet orange essential oil with sweet orange fragrance can soothe nerves, reduce stress, maintain physical and mental pleasure and enhance vitality. It can drive away tension and stress and improve insomnia caused by anxiety.

4. Other aspects: you can remove the odor, wipe the furniture with sweet orange essential oil, and keep the furniture clean.

Method of self-made grapefruit essential oil;

1. Raw material cleaning: clean the impurities and dirt on the fruit surface, soak it in 0.5%na2co3 solution 1 ~ 3min, rinse it with clear water and drain it for later use.

2. Squeeze oil with Wen Na oil press. First, the raw materials are poured into the hopper, and then slowly put into the grinding disc through the automatic feeding door. With the rotation of the millstone, the fruit keeps rotating on the millstone, the oil cells in the peel are scratched by many sharp thorns on the millstone, and the peel essential oil flows out. At the same time, open the spray water to wash down the oil and flow into the receiving tank. Pay attention to that the water spraying amount should be consistent with the feed amount and the separation amount of the centrifuge, otherwise the oil output will be affected.

3. Filter separation: the oil-water mixture flows into the storage tank after being filtered by the filter screen. Pumping into a centrifuge to separate essential oil. According to different grapefruit varieties, choose the appropriate diversion ring, the diameter is generally 105 ~ 1 10. The flow rate of mixed liquid entering the centrifuge should be kept stable. Too large flow rate is easy to produce mixed oil, and too small flow rate will affect the output. After separation, let the centrifuge idle for 2 ~ 3min, rinse with plenty of clean water, and rinse off the residual oil in the drum.

4. Refining Because the separated essential oil contains a small amount of moisture and impurities, it needs to be refrigerated in a cold storage at 5 ~ 8℃ for 5 ~ 7 days to let the impurities sink, and the clarified oil on the upper layer can be sucked out by a siphon.

5. Packaging and storage Put the refined essential oil into a brown glass bottle or a white iron drum, fill it as much as possible, seal it, store it at low temperature and avoid light.