Curcumin or curcumin-ramification-containing composite feed additive and use thereof
A technology of curcumin derivatives and compound feed, applied in the direction of animal feed, animal feed, application, etc., can solve problems such as harm to the healthy development of aquaculture industry, economic losses of farmers, harm to aquaculture industry, etc., and to improve the problem of scale shedding. , avoid stress bleeding, reduce the effect of serum transaminase activity
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Embodiment 1
[0123] Curcumin was purchased from Xi'an Yinghua Biotechnology Co., Ltd., trade name: turmeric extract, wherein the content of curcumin was 95.36%, and it was a yellow powder.
Embodiment 2
[0125] The curcumin, demethoxycurcumin, and bisdemethoxycurcumin are curcumin compounds, and the synthesis method adopts Hu Xinlong (Zhejiang University of Technology, 2007 dissertation) "extraction, separation, chemical modification and Research on the antitumor activity of its derivatives” reports that curcumin contains a part of volatile oil components, and curcumin is insoluble in water, so you can use a volatile oil extractor to remove fat-soluble substances such as volatile oil, and then use ethanol solution as an extraction solvent to extract Sichuan Curcuma longa powder, to obtain curcumin. The process is attached Figure 5 .
[0126] Process conditions: first remove the volatile oil, soak for 24 hours, the particle size of the turmeric powder is medium (20-30 mesh), the extraction time is 1.5 hours, the solid-to-liquid ratio is 1:5, after removing the volatile oil, continue to extract with 75% ethanol for 3 h, when the liquid-solid ratio is 6:1, the total curcumin i...
Embodiment 3
[0128] The preparation method of described curcumin aromatic ring derivative:
[0129] Dissolve 200ng curcumin (1.62mmol) in 40ml acetone, add 4ml ethyl chloroacetate, 40mgNaI and 314mg anhydrous potassium carbonate, and heat to reflux for 24h. Filtrate, concentrate the solution, purify with silica gel column chromatography, eluent is cyclohexane / ethyl acetate / ethanol (V(C 6 h 12 ):V(CH 3 COOC 2 h 5 ):V(C 2 h 5 OH))=4:5:1, 229 mg of curcumin ethyl dicarbonate was obtained, and the yield was 78%. Dissolve 200g in 20ml acetone / water (V(CH 3 COCH 3 ):V(H 2 O))=4:1), add 22mg KOH, keep stirring, until TLC detects that curcumin ethyl dicarbonate reacts completely. Acidify the reaction solution with dilute hydrochloric acid, distill off acetone, and extract with ethyl acetate, collect the ethyl acetate layer, dry with anhydrous sodium sulfate, distill off the solvent, and use V(C 2 h 5 OH):V(H 2 O) = 2:1 recrystallization to obtain 177 mg of curcumin dicarbonate, yellow...
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