Views: 0 Author: Site Editor Publish Time: 2022-11-04 Origin: Site
Clove is the flower bud of the evergreen arbor plant of Myrtle family. It has the functions of reducing stress in the middle of temperature, tonifying kidney and yang, etc. It is one of the scarce drugs that need to be imported and supplied. In addition to the use of clove as medicine, clove oil is also often used as the spice of food and cosmetics. The market demand is large. Some researchers have conducted a comparative study on the chemical components of clove oil and clove leaf oil. The results show that the chemical components of clove oil and clove leaf oil are similar, but the content of each component is slightly different. The content of clove leaf oil is lower than clove oil, but clove leaves can be harvested year after year, and the source is easier to get than flower buds. Pharmacological tests have proved that clove leaf oil can still be used in food and cosmetics instead of clove oil.
Clove leaf oil is the essential oil obtained by steam distillation from clove leaves of Myrtaceae family, with a yield of 0.3-0.5%. Main ingredients: mainly eugenol, acetyl eugenol (eugenol acetate), and ethylene caryophyllene. Toxicological basis: LD50, ADI: unlimited.
Yin Weiping et al. studied the chemical components of the volatile oil from the leaves of Syringa microphylla collected in Funiu Mountain Area, Henan Province by using the GC/MS technology. The total ion flow diagram of the volatile oil components was measured. The qualitative and quantitative results were as follows (%): formic acid 2.84, acetic acid 12.82, 1,2-diethoxyethane 7.67, 1-hydroxy-2-acetone, 1-pentene 4.34, n-hexanal 3.16, 2-furaldehyde 5.56, 2-ene hexanal 1.45, 3-hexene 1-alcohol 2.12, 1-hexanol 4.44 Benzaldehyde 1.79, 3-vinyl pyridine 3.18, 5-methyl-5-vinyltetrahydro-a-monofuryl dimethyl carbinol 1.45, 3,7-dimethyl-1,6-octadiene-3-monool 18.87 α- Terpineol 1.50, 2-phenylethyl acetate 0.79. It can be seen that there are about 32 chemical components in the volatile oil of Syringa microphylla. Among the 16 compounds identified, the main component is terpene oxygenates, and in these components, benzaldehyde is also contained, with the content of 1.79%. Benzaldehyde, furfural, α- Terpene alcohols have not been reported in Syringa. They are medicinal active ingredients. They have anti-inflammatory and analgesic effects. It is reported that benzaldehyde has anti-cancer synergistic effect.
In addition, it is reported that Wei Zhengji, Lu Dan and others from Jilin University extracted, separated and identified lilac from the campus of Jilin University. They separated and obtained three monomer compounds from lilac leaves. According to their physical and chemical properties, spectral analysis (1H - HMR, 13C - NMR, H - MBC, etc.) and chemical methods, they identified lup - 20 (29) - en - 3 - one, n-299ane and 4,19 - dimethyl - 12,13 - dihydroxydocane, respectively, They were isolated from this plant for the first time.
It is applied to the preparation of edible essence. China's Hygienic Standard for the Use of Food Additives (GB2760-1996) stipulates that appropriate amounts can be used to prepare various edible essence according to production needs. FEMA's reference for use in food is as follows.
Non alcoholic beverage: 8.6 mg/kg.
Ice cream and ice products: 16 mg/kg.
Candy: 22 mg/kg.
Baked food: 30 mg/kg.
Colloid and pudding: 510 mg/kg.
Meat: 670 mg/kg.
Condiment: 14-40 mg/kg.
Pickled food: 7.0~16 mg/kg.
Apple white: 2.0 mg/kg.
1. Character: light yellow volatile essential oil, presenting the aroma of eugenol and furfural. It is dark purple brown when it meets iron. It has bactericidal effect.
2. Solubility: It is soluble in benzyl benzoate, diethyl phthalate and propylene glycol. It is microemulsion white in most non-volatile oils and almost insoluble in mineral oil and glycerin. Slightly soluble in water.
1. It is obtained from the leaves of Syringa aromaticum (also known as Eugenia caryophyllata), a myrtle plant, by steam distillation. The yield is about 2%~3%.
2. The components extracted by supercritical CO2 fluid from clove leaves are mainly volatile oil, and the volatile oil extracted by green leaves will have a small amount of chlorophyll color. The extraction rate of supercritical CO2 fluid is about 50% higher than that of steam. In addition to high yield, it also has the characteristics of short time consumption, low energy consumption and environmental protection. It is a potential new method.