Method for preparing rosemary acid
A technology for extracting rosmarinic acid, which is applied to the preparation of carboxylic acid esters, chemical instruments and methods, and the preparation of organic compounds, can solve the problems of high risk, low extraction rate of rosmarinic acid, and cumbersome steps, and achieve Huge social and economic value, low production cost, good separation effect
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Embodiment 1
[0027] A method for preparing rosmarinic acid, its concrete processing steps are as follows:
[0028] (1) Preparation of N503 extract
[0029] Mix the N503 extractant and sulfonated kerosene uniformly at a volume ratio of 1:1 L / L to prepare the N503 extract, which is used in step (3) to prepare the rosmarinic acid extract phase.
[0030] (2) preparation of rosmarinic acid stock solution
[0031] According to the method described in the Chinese Patent Example 1 of CN 107739305 A, the notification number is prepared to obtain the centrifuge liquid described in the (2) step, which is the waste liquid produced in the process of producing rosemary fat-soluble antioxidants. The volume ratio of the centrifugal supernatant and purified water is 1:1 L / L, and the centrifugal supernatant and purified water are evenly mixed, then pumped into a tubular centrifuge, and centrifuged at a speed of 10000r / min. Collect the second centrifugal supernatant and the second centrifugal slag respective...
Embodiment 2
[0043] A method for preparing rosmarinic acid, its concrete processing steps are as follows:
[0044] (1) Preparation of N503 extract
[0045] Mix the N503 extractant and sulfonated kerosene uniformly at a volume ratio of 1:3 L / L to prepare the N503 extract, which is used in step (3) to prepare the rosmarinic acid extract phase.
[0046] (2) preparation of rosmarinic acid stock solution
[0047] According to the method described in the Chinese Patent Example 1 of CN 107739305 A, the notification number is prepared to obtain the centrifuge liquid described in the (2) step, which is the waste liquid produced in the process of producing rosemary fat-soluble antioxidants. The volume ratio of the centrifugal supernatant and purified water is 1:3 L / L, and the centrifugal supernatant and purified water are evenly mixed, then pumped into a tubular centrifuge, and centrifuged at a speed of 15000r / min. Collect the second centrifugal supernatant and the second centrifugal slag respecti...
Embodiment 3
[0059] A method for preparing rosmarinic acid, its concrete processing steps are as follows:
[0060] (1) Preparation of N503 extract
[0061] Mix the N503 extractant and sulfonated kerosene uniformly at a volume ratio of 1:5 L / L to prepare the N503 extract, which is used in step (3) to prepare the rosmarinic acid extract phase.
[0062] (2) preparation of rosmarinic acid stock solution
[0063] According to the method described in Chinese Patent Example 1 with the notification number CN 107739305A, the centrifugal supernatant liquid described in the (2) step is prepared, which is the waste liquid produced in the process of producing rosemary fat-soluble antioxidants. The volume ratio of the supernatant to the purified water is 1:5 L / L, and the centrifuged supernatant and the purified water are evenly mixed, then pumped into a tubular centrifuge, and centrifuged at a speed of 20,000 r / min. Collect the second centrifugal supernatant and the second centrifugal slag respectivel...
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