Preparation method of low-As-content tree moss absolute oil
A tree moss and content technology, which is applied in the directions of separation methods, fat oil/fat refining, chemical instruments and methods, etc., can solve the problems of tree moss aroma that has a very large influence, cannot change the aroma, and loss of aroma components, and achieves the treatment process. Harmony, aroma purity, As content reduction effect
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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...
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