Preparation method of low-As-content tree moss absolute oil

Abstract

A preparation method of low-As-content tree moss absolute oil comprises the following specific steps that 1, a tree moss raw material is soaked with water of 15-30 times of the amount of the tree moss raw material for 0.5 -2 hours, the soaked tree moss raw material is naturally air-dried, 100-mesh screening is performed after smashing, extraction is performed by using 65%-95% ethyl alcohol or petroleum ether, an extract is concentrated till no solvent is evaporated after extraction, and tree moss extract is obtained; 2, 95% ethyl alcohol 3-6 times of the mass of the extract is added to the tree moss extract for redissolution, freezing is performed at the temperature of 10-30 DEG C for 8-24 hours after full stirring and dissolution, insoluble substances are filtered out, the solution is concentrated till no solvent is dissolved, and the low-As-content tree moss absolute oil is obtained. The preparation method has the advantages that the operation is simple, the As content in the tree moss absolute oil is reduced under the coordinating effect of two treatment processes, no adverse influence is produced on the perfume quality of the final tree moss extract, the fragrance is purer, and the product quality is better. In addition, a preparation method is low in cost and suitable for large-scale industrial production.

Description

technical field

[0001] The invention belongs to the extraction technology of natural spices, and in particular relates to a preparation method of tree moss absolute with low As content. Background technique

[0002] Tree moss, also known as cluster tree flowers, tree cauliflower, epiphytic lichens, is mostly found on pine, fir, oak, spruce or fir trees, and has a unique natural green fragrance and strong resinous smell of liverwort. At present, tree moss extract is widely used in daily chemicals, food, and tobacco flavors, especially more and more tobacco companies use tree moss to give cigarette products a unique aroma style.

[0003] Due to the simple structure and strong adsorption capacity of tree moss and other epiphytic bryophytes, it is easy to respond to pollution factors. In recent years, with the intensification of environmental problems such as air pollution, the problem of heavy metals in tree moss is more serious, especially the high content of As . Arsenic is...

Examples

Embodiment 1

[0016] Soak the tree moss raw material in water with a mass ratio of 15 times for 2 hours. After soaking, the tree moss raw material is naturally dried, crushed and passed through a 100-mesh sieve, extracted with 65% ethanol, concentrated until no solvent is evaporated after extraction, and the concentration temperature is 50 ℃, and the pressure is 5 kPa to obtain the tree moss extract.

[0017] Add 95% ethanol with 4 times the weight of the extract to the tree moss extract, and dissolve it fully. After fully stirring and dissolving, freeze at -10°C for 24 hours, filter to remove insoluble matter, and concentrate the solution until no solvent is evaporated. The concentration temperature is 50°C. ℃, the pressure is 12 kPa, and the treemoss absolute oil with low As content is obtained.

[0018] As detected by ICP-MS, the As content in the obtained low As content tree moss absolute oil was 5.89 mg / kg. According to the test comparison, if the raw material was not soaked in water, ...

Embodiment 2

[0020] Soak the tree moss raw material in water with a mass ratio of 30 times for 0.5 hours. After soaking, the tree moss raw material is naturally dried, crushed and passed through a 100-mesh sieve, extracted with 95% ethanol, concentrated until it is evaporated without solvent, and the concentration temperature is 50 °C and a pressure of 12 kPa, the tree moss extract was obtained.

[0021] Add 95% ethanol which is 3 times the weight of the extract to the tree moss extract and dissolve it back. After fully stirring and dissolving, freeze at -30°C for 8 hours, filter to remove insoluble matter, and concentrate the solution until there is no solvent and evaporate it. The concentration temperature is 40°C. ℃, the pressure is 5 kPa, and the tree moss absolute oil with low As content is obtained.

[0022] As detected by ICP-MS, the As content in the low As content tree moss absolute was 6.23 mg / kg. According to the test comparison, if the raw material was not soaked in water, the ...

Embodiment 3

[0024] Soak the tree moss raw material in water with a mass ratio of 25 times for 1 hour. After soaking, the tree moss raw material is dried naturally, crushed and passed through a 100-mesh sieve, extracted with petroleum ether, concentrated until no solvent is evaporated after extraction, and the concentration temperature is 30 °C , and the pressure is 10 kPa to obtain the tree moss extract.

[0025] Add 95% ethanol which is 6 times the weight of the extract to the tree moss extract and dissolve it back. After fully stirring and dissolving, freeze at -20°C for 12 hours, filter to remove insoluble matter, and concentrate the solution until no solvent is evaporated. The concentration temperature is 40°C. ℃, the pressure is 10 kPa, and the tree moss absolute oil with low As content is obtained.

[0026] As detected by ICP-MS, the content of As in the low As content tree moss absolute oil was 6.17 mg / kg. According to the test comparison, if the raw material is not soaked in wate...

technical field

[0001] The invention belongs to the extraction technology of natural spices, and in particular relates to a preparation method of tree moss absolute with low As content. Background technique

[0002] Tree moss, also known as cluster tree flowers, tree cauliflower, epiphytic lichens, is mostly found on pine, fir, oak, spruce or fir trees, and has a unique natural green fragrance and strong resinous smell of liverwort. At present, tree moss extract is widely used in daily chemicals, food, and tobacco flavors, especially more and more tobacco companies use tree moss to give cigarette products a unique aroma style.

[0003] Due to the simple structure and strong adsorption capacity of tree moss and other epiphytic bryophytes, it is easy to respond to pollution factors. In recent years, with the intensification of environmental problems such as air pollution, the problem of heavy metals in tree moss is more serious, especially the high content of As . Arsenic is...

Examples

Embodiment 1

[0016] Soak the tree moss raw material in water with a mass ratio of 15 times for 2 hours. After soaking, the tree moss raw material is naturally dried, crushed and passed through a 100-mesh sieve, extracted with 65% ethanol, concentrated until no solvent is evaporated after extraction, and the concentration temperature is 50 ℃, and the pressure is 5 kPa to obtain the tree moss extract.

[0017] Add 95% ethanol with 4 times the weight of the extract to the tree moss extract, and dissolve it fully. After fully stirring and dissolving, freeze at -10°C for 24 hours, filter to remove insoluble matter, and concentrate the solution until no solvent is evaporated. The concentration temperature is 50°C. ℃, the pressure is 12 kPa, and the treemoss absolute oil with low As content is obtained.

[0018] As detected by ICP-MS, the As content in the obtained low As content tree moss absolute oil was 5.89 mg / kg. According to the test comparison, if the raw material was not soaked in water, ...

Embodiment 2

[0020] Soak the tree moss raw material in water with a mass ratio of 30 times for 0.5 hours. After soaking, the tree moss raw material is naturally dried, crushed and passed through a 100-mesh sieve, extracted with 95% ethanol, concentrated until it is evaporated without solvent, and the concentration temperature is 50 °C and a pressure of 12 kPa, the tree moss extract was obtained.

[0021] Add 95% ethanol which is 3 times the weight of the extract to the tree moss extract and dissolve it back. After fully stirring and dissolving, freeze at -30°C for 8 hours, filter to remove insoluble matter, and concentrate the solution until there is no solvent and evaporate it. The concentration temperature is 40°C. ℃, the pressure is 5 kPa, and the tree moss absolute oil with low As content is obtained.

[0022] As detected by ICP-MS, the As content in the low As content tree moss absolute was 6.23 mg / kg. According to the test comparison, if the raw material was not soaked in water, the ...

Embodiment 3

[0024] Soak the tree moss raw material in water with a mass ratio of 25 times for 1 hour. After soaking, the tree moss raw material is dried naturally, crushed and passed through a 100-mesh sieve, extracted with petroleum ether, concentrated until no solvent is evaporated after extraction, and the concentration temperature is 30 °C , and the pressure is 10 kPa to obtain the tree moss extract.

[0025] Add 95% ethanol which is 6 times the weight of the extract to the tree moss extract and dissolve it back. After fully stirring and dissolving, freeze at -20°C for 12 hours, filter to remove insoluble matter, and concentrate the solution until no solvent is evaporated. The concentration temperature is 40°C. ℃, the pressure is 10 kPa, and the tree moss absolute oil with low As content is obtained.

[0026] As detected by ICP-MS, the content of As in the low As content tree moss absolute oil was 6.17 mg / kg. According to the test comparison, if the raw material is not soaked in wate...