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A method for extracting mixed alcohol from the waste residue of producing natural ferulic acid
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A technology of ferulic acid and mixed alcohols, which is applied in the field of plant extraction and separation, can solve the problems of difficult comprehensive utilization of waste residues, achieve the effects of reducing dissolution losses, improving processing efficiency, and reducing environmental pressure
Active Publication Date: 2021-02-02
HUNAN HUACHENG BIOTECH
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Problems solved by technology
[0018] In order to solve the problem that the waste residue produced in the process of extracting oryzanol-containing raw materials to prepare ferulic acid is difficult to comprehensively utilize, the present invention provides a method for extracting mixed alcohol from the waste residue of producing natural ferulic acid, and the waste residue of producing natural ferulic acid The bioactive substances contained in the extract are extracted, and then the waste residue is treated in an environmentally friendly manner, turning waste into treasure, recycling value-added mixed alcohol products, and creating obvious economic and social benefits; providing a triterpene (ene) alcohol and sterol The mixed alcohol product composed, the total content ≥ 95%, the yield is above 70%, white, high economic value
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Embodiment 1
[0070] 1) Hot melt neutralization. 3m ahead 3 Add 1000 L of edible ethanol with a concentration of 72% in the extraction tank, start stirring, put 400 kg of waste residue into the extraction tank during continuous stirring, and continue to add 1000 L of edible ethanol with a concentration of 72%. Keep stirring and turn on the steam heating, raise the temperature to 60°C to dissolve the waste residue, and then use 4% dilute hydrochloric acid to adjust the pH of the solution to 6.2.
[0071] 2) Filter. Pass the solution through a three-leg centrifuge equipped with a 1000-mesh canvas filter bag to collect the filtrate to obtain 1900 L of filtrate.
[0072] 3) The ceramic membrane is clarified. When the temperature of the feed liquid is 60°C, the filtrate is quickly passed through the complete set of ceramic membrane equipment with a membrane core material of zirconia and a pore size of 500nm to obtain a clear and transparent ceramic membrane filtrate.
[0073] 4) Insulated ul...
Embodiment 2
[0081] 1) Hot melt neutralization. 6m ahead 3 Add 2500L of edible ethanol with a concentration of 75% in the extraction tank, start stirring, put 700kg of waste residue into the extraction tank during continuous stirring, and continue to add 2400L of edible ethanol with a concentration of 75%. Keep stirring and turn on the steam heating, raise the temperature to 65°C to dissolve the waste residue, and then use 4% dilute hydrochloric acid to adjust the pH of the solution to 6.7.
[0082] 2) Filter. Pass the solution through a disc centrifuge and collect the filtrate to obtain 4700L of filtrate.
[0083] 3) The ceramic membrane is clarified. When the temperature of the feed liquid is 65°C, the filtrate is quickly passed through the complete set of ceramic membrane equipment with a membrane core material of zirconia and a pore size of 800nm to obtain a clear and transparent ceramic membrane filtrate.
[0084] 4) Insulated ultrafiltration membrane separation. The ultrafiltr...
Embodiment 3
[0092] Other conditions are the same as in Example 1, except that the molecular weight cut-offs in step 4) are 7KD and 3KD respectively. After testing, the total content of mixed alcohols is 96.63%, and the total yield of mixed alcohols is 76.91%.
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Abstract
The invention provides a method for extracting mixed alcohol from waste residues generated in production of natural ferulic acid. The method comprises the following steps of (1) heating, dissolution,and neutralization, (2) filtration, (3) clarification through a ceramic membrane, (4) separation through a heat preservation ultrafiltration membrane, (5) concentration and filtration, (6) degreasing,(7) decolorization, and (8) crystallization separation, specifically, carrying out room-temperature crystallization, low-temperature crystallization, , and room-temperature crystallization after concentration on decolorized liquid respectively, combining crystals obtained by the three times of crystallization, washing, filtering and drying to obtain a mixed alcohol product. According to the method, the hydrolysis waste residues generated in the process of producing the natural ferulic acid by using oryzanol raw materials are comprehensively utilized to a high degree, and finally, the mixed alcohol product consisting of triterpene (alkene) alcohol mainly comprising cycloartenol (alkene) alcohol and sterol is prepared with high yield and high purity; and according to the method, the total content of the mixed alcohol is larger than or equal to 95%, the yield is 70% or above, the triterpene (alkene) alcohol accounts for 40%-60%, the sterol accounts for 35%-50%, the economic value is high, and the color is white.
Description
technical field [0001] The invention belongs to the technical field of plant extraction and separation, and relates to a mixed alcohol extracted from the waste residue of producing natural ferulic acid and a preparation method thereof, in particular to a mixed alcohol composed of cycloartenol triterpene (ene) alcohols and sterols and its preparation method. Background technique [0002] There are two methods for industrial production of ferulic acid: one is chemical synthesis, and the other is oryzanol hydrolysis. As for other methods, although there are many reports, they have not been applied in actual production. [0003] At present, the ferulic acid that is exported in large quantities in China is natural ferulic acid, mainly because China is the main rice producing country in the world and has many large rice bran oil factories, so it has an absolute advantage in oryzanol resources; countries and regions such as Europe, America and Japan mainly use natural ferulic acid...
Claims
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Application Information
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