Technology: Gardenia Yellow fruit, shelled grinding, solvent extraction degrease, organic solvent extraction, concentration, refining, drying, finished products. Xanthocyanin, Xanthic acid that gardenia rectification are water-soluble polar molecules, and there are many kinds of extraction agents. Studies have shown that alcohol is beneficial to the extraction of anthocyanin and anthocyanin acid, but it is not suitable to extract with high concentration of ethanol, otherwise the fat, hydrocarbon and many green substances will be dissolved with pigment, Mangiferin and 50% ethanol and 60% ethanol are suitable. Organic solvent extraction, high cost, production also has a certain risk, and organic solvent is not conducive to microwave extraction and resin adsorption, increasing the difficulty of refining process. The extraction process with water is simple, but the extraction time is relatively long, and there are many pigment impurities extracted. If Flax lignans is extracted with hot water, protease and amylase can be added in the process to promote pigment dissolution. The oil content affects the efficiency of pigment extraction, and pre-degreasing before pigment extraction is beneficial to pigment extraction. Acid solvent can improve the solubility of pigment, but reduce its stability. 50-60℃ is the ideal extraction temperature. When water is used as the extraction solvent, especially at room temperature, the extraction time is more than 12h, or even 2-3 days, and the extraction time is not more than 4-5h. Mixed Tocopherols Oil is advisable to raise the series 2 or 3 times.
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