Method for extracting essential oil from golden camellia leaves

Abstract

The invention discloses a method for extracting essential oil from golden camellia leaves in the field of essential oil preparation. The method comprises the following steps that (1) the golden camellia leaves are crushed and ground to obtain powder; (2) ethyl acetate is added into the powder for mixing to obtain mixed liquid; (3) the mixed liquid is conveyed into an ultrasonic cleaning instrumentfor extraction to obtain extraction liquid; (4) the extraction liquid is filtered and is then conveyed into a rotary evaporator to obtain primary concentrated liquid. The golden camellia leaves are crushed and ground to obtain powder; the powder and the ethyl acetate are mixed and are put into the ultrasonic cleaning instrument for extraction to obtain extraction liquid; the extraction liquid isfiltered and is conveyed into the rotary evaporator to be concentrated; then, acetone is added for secondary concentration; finally, three-times concentration is performed to obtain essential oil; therefore the essential oil of the golden camellia leaves can be fast obtained; the blank of the essential oil extraction of the golden camellia leaves is filled. The method can be used for the preparation of the essential oil of the golden camellia leaves.

Description

technical field [0001] The invention relates to a method for preparing essential oil, in particular to a method for extracting essential oil from Camellia japonica leaves. Background technique [0002] Camellia japonica is an evergreen shrub or small tree. It is a national first-class protected plant. It is mainly distributed in the southwestern part of Guangxi. It has high heat requirements and is a tropical tree species. According to reports, golden camellia contains active ingredients with various physiological functions such as lowering blood sugar, lowering blood fat, lowering cholesterol, and inhibiting tumor growth, as well as various trace elements. Huang Yonglin et al. proved that the extract of Camellia japonica tea has the effect of lowering blood lipid by using the model of hyperlipidemia. Xia Xing and others used the diabetic mouse model to prove that its leaf extract can improve the structure and function of the pancreas. Essential oil is a general term for a...

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Problems solved by technology

[0002] Camellia japonica is an evergreen shrub or small tree. It is a national first-class protected plant. It is mainly distributed in the southwestern part of Guangxi. It has high heat requirements and is a tropical tree species. According to reports, golden camellia contains active ingredients with various physiological functions such as lowering blood sugar, lowering blood fat, lowering cholesterol, and inhibiting tumor growth, as well as various trace elements. Huang Yonglin et al. proved that the extract of Camellia japonica tea has the effect of lowering blood lipid by using the model of hyperlipidemia. Xia Xing and others used the diabetic mouse model to prove that its leaf extract can improve the structure and function of the pancreas. Essential oil is a general term for a kind of oily liquid with special fragrance and volatile at room temperature, which exists in leaves and other organs, and is composed of simple compounds with relatively small molecular weight. Essential oils are easily soluble in organic solvents and ethanol, insoluble in water, sensitive to light and heat, and easy to deteriorate. Affected by geographical distribution, domestic related research work is concentrated in universities in Guangxi and surrounding areas. The main research work focuses on the extraction process of camellia flavonoids and polysaccharide mixtures. There are few studies on the extraction of essential oils.

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