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A process for removing plasticizers in mulberry anthocyanins
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A technology of plasticizer and anthocyanin, which is applied in the field of plasticizer removal technology, can solve problems such as unsolved problems, and achieve the effects of low cost, reduction of plasticizer residues, and protection of health.
Active Publication Date: 2019-04-12
天津市尖峰天然产物研究开发有限公司
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[0004] In the prior art, for example, CN102659743A discloses a method for extracting and refining mulberry seed anthocyanins. The steps are: the mulberry raw material is first extracted with an acid aqueous solution, and then extracted with an acid-alcohol solution. The extract is concentrated under pressure until it is alcohol-free, filtered, The filtrate is combined with the water extract, adsorbed by the macroporous resin, washed with water, analyzed with ethanol of appropriate concentration, concentrated and dried to obtain mulberry anthocyanin extract, the anthocyanin content is only 25%, and the problem of plasticizer not resolved
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Embodiment 1
[0015] (1) Use mulberry as raw material, extract with 40% ethanol, concentrate the extract, and then pass through the column chromatography of D101 macroporous resin, wash the macroporous resin with water until the effluent is clear, and then elute with 50% ethanol, Collect the eluate, concentrate until the sugar content is 15°, which is the crude extract of mulberry;
[0016] (2) Extract the crude mulberry extract with ethyl acetate as the extractant, the extraction ratio of the extractant to the crude extract is 1:1 (volume ratio), extract 3 times, combine and recover the water layer to obtain the finished product, and the yield is 0.76%, the anthocyanin content is 31.36%, and the plasticizer meets international standards.
Embodiment 2
[0018] (1) Use mulberry as raw material, extract with 65% ethanol, concentrate the extract, and then pass through D101 macroporous resin column chromatography, wash the macroporous resin with water until the effluent is clear, and then elute with 45% ethanol , collect the eluent, concentrate until the sugar content is 15°, which is the crude extract of mulberry;
[0019] (2) Use ethyl acetate as the extractant to extract the crude extract of mulberries, and the extraction ratio of the extractant to the crude extract
[0020] The example is 1:2 (volume ratio), extraction is done twice, and the finished product is obtained after combining and recovering the water layer, the yield is 0.81%, the anthocyanin content is 33.34%, and the plasticizer meets the international standard.
Embodiment 3
[0022] (1) Use mulberry as raw material, extract with 50% ethanol, concentrate the extract, and pass through D101 macroporous resin column chromatography, first wash the macroporous resin until the effluent is clear, and then elute with 35% ethanol , collect the eluent, concentrate until the sugar content is 15°, which is the crude extract of mulberry;
[0023] (2) Extract the crude mulberry extract with ethyl acetate as the extractant, the extraction ratio of the extractant to the crude extract is 1:3 (volume ratio), extract once, combine and recover the water layer to obtain the finished product, the yield 0.55%, the anthocyanin content is 32.11%, and the plasticizer meets international standards.
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Abstract
The invention discloses a technology for removing a plasticizer from mulberry anthocyanin. The technology comprises the following steps: (1) with mulberry as a raw material, extracting with 40%-95% ethanol, concentrating an extract solution, washing macroporous resin until an effluent is clear through column chromatography of D101 macroporous resin, eluting with 30%-75% ethanol, and collecting an eluent and concentrating until the sugar degree is 15 degrees, thereby obtaining a mulberry extract; and (2) with ethyl acetate as an extracting agent, extracting the mulberry extract crude extract for 1-3 times at the ratio (volume ratio) of the extract agent to the crude extract being (1:1) to (1:5), and merging and recovering a water layer, so as to obtain the finished product, wherein the yield is 0.5%-1.2%, the anthocyanin content is 30%-35%, and the plasticizer conforms to the internal standard. The method disclosed by the invention is simple to operate, low in cost and easy to industrialize; a plasticizer residue can be reduced; the physical health of the citizen is ensured; and the international standard is achieved.
Description
technical field [0001] The invention relates to a process for removing plasticizers, in particular to a process for removing plasticizers in mulberry anthocyanins. Background technique [0002] Anthocyanins are a class of water-soluble pigments that widely exist in plants and belong to flavonoid compounds. The anthocyanins in mulberry are cyanidin-3-glucoside, geranium-3-glucoside, petunia-3-rutinoside. Anthocyanins are powerful antioxidants that protect the body from harmful substances called free radicals. Anthocyanins can also enhance the elasticity of blood vessels, improve the circulatory system and enhance the smoothness of the skin, inhibit inflammation and allergies, and improve the flexibility of joints. [0003] Plasticizers, generally also called plasticizers, there are more than 100 types of plasticizers. Common plasticizers include dimethyl phthalate (DMP), diethyl phthalate (DEP), ortho Diisobutyl phthalate (DIBP), dibutyl phthalate (DBP), di(2-ethyl)hexyl p...
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