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CN1284543A - Preparation of oil soluble tea polyphenol derivative used as edible oil antioxidant - Google Patents

Preparation of oil soluble tea polyphenol derivative used as edible oil antioxidant Download PDF

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CN1284543A
CN1284543A CN 00113162 CN00113162A CN1284543A CN 1284543 A CN1284543 A CN 1284543A CN 00113162 CN00113162 CN 00113162 CN 00113162 A CN00113162 A CN 00113162A CN 1284543 A CN1284543 A CN 1284543A
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oil
acid
acyl chlorides
parts
tea polyphenol
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CN1106370C (en
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唐安斌
张德文
陈宇豪
陈芮
麻开旺
李华兰
杨远华
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SICHUAN DONGFANG INSULATING MATERIAL CO Ltd
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SICHUAN DONGFANG INSULATING MATERIAL CO Ltd
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Abstract

The oil soluble tea polyphenol derivative is prepared by using water soluble tea polyphenol derivative, C6-C30 acyl chloride, acylation catalyst, rearrangement assistant, reductant, etc. as raw material, and through 0-axylation, rearrangement, reduction of water soluble tea polyphenol derivative to introduce long fat chain as well as subsequent eliminating catalyst, eliminating salt, water washing and dewatering. The product, oil soluble tea polyphenol derivative, is oil soluble in oil feed and edible oil and has the excellent antioxidant property maintained.

Description

A kind of preparation of oil soluble tea polyphenol derivative as edible oil antioxidant
The present invention relates to a kind of alkyl derivative preparation method of the polyhydroxy-benzene as oxidation inhibitor, particularly as the preparation of oil soluble tea polyphenol derivative of edible oil antioxidant.
Tea-polyphenol has another name called tea tannin, the platymiscium polyphenols, according to GB8313-87, tea-polyphenol is meant the general name that produces the phenolic compound of combined reaction in the Aqua Folium Camelliae sinensis extractive substance with ferrous ion, tea-polyphenol class material is the essential substance of decision tealeaves local flavor and quality, being again a kind of good natural oxidation inhibitor, also is to the active material of the pharmacological action of tealeaves.In recent years, the development and use of tea-polyphenol and derivative thereof have caused the personages' of each side such as domestic and international Tea Science, medicine and pharmacology and grocery trade very big concern.Company in the tea-polyphenol molecular structure or o-phenyl phenol base have the activity of hydrogen donor, great reducing power is arranged, this just makes tea-polyphenol not only have stronger oxidation-resistance, and antibacterial in addition, press down enzyme, anticancer, anti-mutation, radioprotective, anti-ageing, remove a series of biologies and physiological and pharmacological activity such as human free radical and hypoglycemic.At present, the foodstuffs industry forward of China is natural, nutrition, health care, meticulous direction develop, have 2 of big toxic side effect, the use in foodstuffs industry of the oxidation inhibitor of 6-toluene di-tert-butyl phenol (BHT), the chemosynthesis such as (BHA) of tertiary butyl-4-hydroxy phenylmethylether has been subjected to very big restriction.The phenolic hydroxyl group of tea-polyphenol has the activity of hydrogen donor, great resistance of oxidation is arranged, it is a kind of food antioxidant of Nantural non-toxic, by the approval of the national foodstuff additive technical committee for standardization (TCST) and the Ministry of Health, classify GB2760-86 " foodstuff additive use hygienic standard " (nineteen ninety amendments) as.
The oxidation inhibitor that tea-polyphenol is made grease and oleaginous food at field of food is aspect one that studies at most at present.The result shows that the tea-polyphenol of interpolation 0.02% has just produced good antioxygenation to salad oil.Compare with blank sample, when preserving 10 days under 65 ℃ of conditions, tea-polyphenol is 88% to the inhibiting rate of salad oil peroxide value, and BHA is 44% to the inhibiting rate of salad oil peroxide value: tea-polyphenol has better antioxidant effect than BHA to salad oil.In addition, tea-polyphenol all has the oxidation-resistance of excellence to fish oil, to refining rape seed oil, to lard.Many research has drawn consistent conclusion: tea-polyphenol has showed more natural oxidation inhibitor V E, stronger antioxygenation such as synthetic oxidation inhibitor BHA, as the oxidation inhibitor of foodstuffs industry, the quality guaranteed period 3-6 that can prolong grease and oleaginous food doubly, the synthetic oxidation inhibitor of complete alternative life-time service, its Application Prospect is very wide.
Although tea-polyphenol has above-mentioned fabulous oxidation-resistance and good bio-physiological activity, can be applicable to food, daily use chemicals, medicine and other fields, still be in theoretical research stage at present mostly, really be not used for suitability for industrialized production.Especially as the antioxidant of food oils, still fail so far to use on a large scale at oil prodution industry.One of the main reasons is its solvability soluble in water, as to be insoluble in oil.To be example as greasy antioxidant, when studying tea-polyphenol at present, generally be earlier tea-polyphenol to be dissolved in dehydrated alcohol to greasy antioxygenation, add in the grease again.Although played antioxygenation; but after the ethanol evaporation; the part tea-polyphenol is the crystal form precipitation again and separates out from grease; not only influence the outward appearance of oil; and the mouthfeel that residual ethanol also can influence oil also has the patent report of preparation oil-soluble tea polyphenol at present, but mostly adopts the organic solvent be difficult for removing, and the active phenolic hydroxyl group in esterification (or acidylate) back remains little; the anti-oxidant activity loss of product is bigger, and this will certainly make the antioxidant property of product descend.
Purpose of the present invention is intended to overcome above-mentioned deficiency of the prior art; by with water miscible tea-polyphenol through chemical reactions such as O-acidylate, rearrangement, reduction; in the tea-polyphenol molecular structure, introduce fatty long-chain, have oil-soluble preparation of oil soluble tea polyphenol derivative as edible oil antioxidant thereby provide under a kind of prerequisite that keeps the tea-polyphenol anti-oxidation characteristics.
Content of the present invention is: a kind of preparation of oil soluble tea polyphenol derivative as edible oil antioxidant is characterized in that being made up of the following step:
(1) acylation reaction: 100 parts of (weight, back are together) tea-polyphenol, 50~500 parts of acyl chlorides, 0.05~10 part of catalyzer adding belt stirrer, thermometer, gas are imported and exported in the reactor of mouth, logical nitrogen, heating is also stirred, be warming up to and react under 50~180 ℃ till the system homogeneous transparent, be cooled to room temperature;
(2) rearrangement reaction: reset auxiliary agent with 10~400 parts and add in the reactant, heat and be stirred to and solidify, place baking oven 100~180 ℃ of insulations 0.5~5 hour again, be cooled to room temperature, add 100~1000 parts of pH<2 acid/aqueous solution and 100~1000 parts of extraction agents again, the phase of anhydrating is divided in the back that stirs, and extraction agent is used the acid of pH<2/aqueous solution repetitive scrubbing 5 times mutually;
(3) reduction reaction: add 50~500 parts of 20% reductive agent/aqueous solution in above-mentioned product and stirred 5~72 hours, extraction agent is washed with water to neutrality mutually, removes extraction agent and promptly makes product, and product is transparent thick liquid of light brown or light brown powder.
In the content of the present invention: described tea-polyphenol is meant the general name that produces the phenolic compound of combined reaction in the tealeaves solvent extractive substance with ferrous ion, comprises four big class materials such as catechin, flavonoid compound, anthocyanidin, phenolic acid.
In the described acylation reaction of content of the present invention: acyl chlorides is 80~250 parts preferably, and catalyzer is 0.5~5 part preferably; In the described rearrangement reaction: reset auxiliary agent and be 80~200 parts preferably, acid/aqueous solution is 100~400 parts preferably, and extraction agent is 100~200 parts preferably; In the described reduction reaction: 20% reductive agent/aqueous solution is 150~300 parts.
In the content of the present invention: described acyl chlorides is at least a in the acyl chlorides of the acyl chlorides of valeryl chloride, caproyl chloride, oenanthyl chloro, capryl(yl)chloride, certain herbaceous plants with big flowers acyl chlorides, lauroyl chloride, nutmeg acyl chlorides, palmityl chloride, stearic acid chloride, soft ester acyl chlorides, oleic acyl chlorides, linoleic acyl chlorides, coconut oil and/or oleic acid.
In the content of the present invention: described catalyzer is at least a in tosic acid, boron trifluoride diethyl etherate, sulfuric acid and/or the phosphoric acid.
In the content of the present invention: described rearrangement agent is Zinc Chloride Anhydrous and/or aluminum trichloride (anhydrous).
In the content of the present invention: described extraction agent is at least a in ether, sherwood oil and/or the hexanaphthene.
In the content of the present invention: described reductive agent is at least a in zinc powder, the sulfurous gas aqueous solution, S-WAT, sodium bisulfite and/or the Sulfothiorine.
In the content of the present invention: described acid is at least a in hydrochloric acid, sulfuric acid and/or the phosphoric acid.
The oil soluble tea polyphenol derivative edible oil antioxidant that the present invention makes is transparent thick liquid of light brown or sundown pressed powder.Raw material according to employing is different with proportioning, can obtain the product of different performance, can be used as the oxidation inhibitor of animal grease and Vegetable oil lipoprotein.
Compare with existing basic technology, the present invention has following characteristics:
(1) making principle is: tea-polyphenol behind chemical reactions such as O-acidylate, rearrangement, reduction again through remove catalyzer, desalt, wash dehydration, drying gets oil soluble tea polyphenol derivative.The O-acidylate is to realize by the phenolic hydroxyl group effect dehydrochlorination of the acyl chlorides of higher fatty acid and tea-polyphenol; reset that the acyl rearrangement then make part that the O-acidylate takes place is close to the tea-polyphenol molecular structure to have on the active position of nucleophilic and phenolic hydroxyl group is discharged, the reductive purpose be make tea-polyphenol deposit or in building-up process oxidized quinoid construction recovery be phenolic hydroxyl group.This method solves the problem that it is insoluble in oil from the chemical structure and the chemical property of tea-polyphenol itself, and has guaranteed the active content of phenolic hydroxyl groups of oil soluble tea polyphenol derivative on the basis of O-acidylate to greatest extent through methods such as rearrangement, reduction;
(2) the gained oil soluble tea polyphenol derivative can be dissolved in the grease with arbitrary ratio, and can keep original color of oil product and transparency, has the antioxygen freshening effect simultaneously;
(3) can prepare the oil soluble tea polyphenol derivative edible oil antioxidant of different performance by adopting different acyl chlorides and tea-polyphenol;
(4) the series unit reaction is implemented easily, and raw material sources are extensive, and cost is lower, and higher performance is arranged, and is easy to apply, and remarkable economic efficiency and social benefit are arranged.
Below by embodiment the present invention is further described in detail.
Embodiment 1 adds tea-polyphenol 100g, certain herbaceous plants with big flowers acyl chlorides 200g, tosic acid 1g in the 1000ml there-necked flask that belt stirrer, thermometer, gas import and export mouthful, and logical nitrogen heats and starts stirring, in reacting under 100 ℃ till the system homogeneous transparent.Add the 200g aluminum chloride, heat and be stirred to and solidify, 100 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 400ml aqueous hydrochloric acid (PH<2) and 100ml ether, divide the phase of anhydrating after stirring, after ether is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium sulfite aqueous solution 500ml and stirred 24 hours, ether is washed with water to neutrality mutually, remove ether and get product, product is the transparent thick liquid of light brown.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 8.3meq/kg (not adding this product contrast oil sample is 33.1meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
Embodiment 2 is with tea-polyphenol 10kg, acyl chlorides 15kg, phosphatase 11 00ml add in the 100L reactor that belt stirrer, thermometer, gas import and export mouthful, and logical nitrogen heats and starts stirring, in reacting under 80 ℃ till the system homogeneous transparent.Add the 20kg aluminum chloride, heat and be stirred to and solidify, 100 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 40kg aqueous hydrochloric acid (PH<2) and 10L ether, divide the phase of anhydrating after stirring, after sherwood oil is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium sulfite aqueous solution 30L and stirred 5 hours, ether is washed with water to neutrality mutually, remove oil and get product, product is the light brown transparent liquid.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 12.6meq/kg (not adding this product contrast oil sample is 33.1 meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
Embodiment 3 imports and exports tea-polyphenol 100g, nutmeg acyl chlorides 220g, tosic acid 1.5g adding belt stirrer, thermometer, gas in the 1000ml there-necked flask of mouth, logical nitrogen, stirring is also started in heating, in reacting under 130 ℃ till the system homogeneous transparent.Add the 80g aluminum chloride, heat and be stirred to and solidify, 100 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 400ml aqueous hydrochloric acid (PH<2) and 100ml ether, divide the phase of anhydrating after stirring, after ether is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium sulfite aqueous solution 500ml and stirred 24 hours, ether is washed with water to neutrality mutually, remove ether and get product, product is the light brown solid.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 8.9meq/kg (not adding this product contrast oil sample is 33.1meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
Embodiment 4 imports and exports tea-polyphenol 100g, oleic acyl chlorides 150g, tosic acid 2g adding belt stirrer, thermometer, gas in the 1000ml there-necked flask of mouth, logical nitrogen, stirring is also started in heating, in reacting under 120 ℃ till the system homogeneous transparent.Add the 50g aluminum chloride, heat and be stirred to and solidify, 130 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 500ml aqueous hydrochloric acid (PH<2) and 80ml ether, divide the phase of anhydrating after stirring, after ether is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium sulfite aqueous solution 400m1 and stirred 36 hours, ether is washed with water to neutrality mutually, remove ether and get product, product is the sundown solid.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 7.3meq/kg (not adding this product contrast oil sample is 33.1meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
Embodiment 5 imports and exports tea-polyphenol 10g, linoleic acyl chlorides 20g, boron trifluoride diethyl etherate 0.5ml adding belt stirrer, thermometer, gas in the 100ml there-necked flask of mouth, logical nitrogen, stirring is also started in heating, in reacting under 80 ℃ till the system homogeneous transparent.Add the 10g aluminum chloride, heat and be stirred to and solidify, 130 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 40ml aqueous hydrochloric acid (PH<2) and 15ml sherwood oil, divide the phase of anhydrating after stirring, after ether is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium sulfite aqueous solution 50ml and stirred 72 hours, ether is washed with water to neutrality mutually, remove ether and get product, product is a light brown viscous liquid.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 8.7meq/kg (not adding this product contrast oil sample is 33.1meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
Embodiment 6 is with tea-polyphenol 10g, acyl chlorides 10g, sulfuric acid 1ml add in the 100ml there-necked flask that belt stirrer, thermometer, gas import and export mouthful, and logical nitrogen heats and starts stirring, in reacting under 50 ℃ till the system homogeneous transparent.Add the 20g aluminum chloride, heat and be stirred to and solidify, 160 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 40ml aqueous hydrochloric acid (PH<2) and 10ml sherwood oil, divide the phase of anhydrating after stirring, after sherwood oil is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium thiosulfate solution 50ml and stirred 12 hours, ether is washed with water to neutrality mutually, remove oil and get product, product is the light brown transparent liquid.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 13.3meq/kg (not adding this product contrast oil sample is 33.1 meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
Embodiment 7 adds tea-polyphenol 100g, capryl(yl)chloride 200g, tosic acid 1.5g in the 1000ml there-necked flask that belt stirrer, thermometer, gas import and export mouthful, and logical nitrogen heats and starts stirring, in reacting under 130 ℃ till the system homogeneous transparent.Add the 200g Zinc Chloride Anhydrous, heat and be stirred to and solidify, 100 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 400ml aqueous hydrochloric acid (PH<2) and 100ml ether, divide the phase of anhydrating after stirring, after ether is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium sulfite aqueous solution 200ml and stirred 24 hours, ether is washed with water to neutrality mutually, remove ether and get product, product is the light brown solid.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 9.8meq/kg (not adding this product contrast oil sample is 33.1meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
Embodiment 8 imports and exports tea-polyphenol 100g, stearic acid acyl chlorides 250g, tosic acid 2g adding belt stirrer, thermometer, gas in the 1000ml there-necked flask of mouth, logical nitrogen, stirring is also started in heating, in reacting under 120 ℃ till the system homogeneous transparent.Add the 100g Zinc Chloride Anhydrous, heat and be stirred to and solidify, 110 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 400ml aqueous hydrochloric acid (PH<2) and 100ml ether, divide the phase of anhydrating after stirring, after ether is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium sulfite aqueous solution 500ml and stirred 64 hours, ether is washed with water to neutrality mutually, remove ether and get product, product is the sundown solid.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 6.8meq/kg (not adding this product contrast oil sample is 33.1 meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
Embodiment 9 imports and exports tea-polyphenol 100g, oleic acyl chlorides 180g, tosic acid 2g adding belt stirrer, thermometer, gas in the 1000ml there-necked flask of mouth, logical nitrogen, stirring is also started in heating, in reacting under 120 ℃ till the system homogeneous transparent.Add the 100g aluminum chloride, heat and be stirred to and solidify, 130 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 400ml aqueous hydrochloric acid (PH<2) and 100ml ether, divide the phase of anhydrating after stirring, after ether is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium sulfite aqueous solution 500ml and stirred 24 hours, ether is washed with water to neutrality mutually, remove ether and get product, product is the sundown solid.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 6.8meq/kg (not adding this product contrast oil sample is 33.1meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
Embodiment 10 adds tea-polyphenol 100g, oleic acyl chlorides 180g, tosic acid 2g in the 1000ml there-necked flask that belt stirrer, thermometer, gas import and export mouthful, and logical nitrogen heats and starts stirring, in reacting under 120 ℃ till the system homogeneous transparent.Add the 100g aluminum chloride, heat and be stirred to and solidify, 130 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 400ml aqueous hydrochloric acid (PH<2) and 100ml ether, divide the phase of anhydrating after stirring, after ether is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium sulfite aqueous solution 500ml and stirred 18 hours, ether is washed with water to neutrality mutually, remove ether and get product, product is the sundown solid.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 8.0meq/kg (not adding this product contrast oil sample is 33.1meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
Embodiment 11 adds acyl chlorides 10g, the phosphatase 11 ml of tea-polyphenol 10g, coconut oil in the 100ml there-necked flask that belt stirrer, thermometer, gas import and export mouthful, and logical nitrogen heats and starts stirring, in reacting under 120 ℃ till the system homogeneous transparent.Add the 20g Zinc Chloride Anhydrous, heat and be stirred to and solidify, 100 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 40ml aqueous hydrochloric acid (PH<2) and 10ml ether, divide the phase of anhydrating after stirring, after sherwood oil is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium sulfite aqueous solution 50ml and stirred 36 hours, ether is washed with water to neutrality mutually, remove oil and get product, product is the light brown transparent solid.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 7.8meq/kg (not adding this product contrast oil sample is 33.1meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
Embodiment 12 adds tea-polyphenol 100g, caproyl chloride 50g, tosic acid 0.5g in the 500ml there-necked flask that belt stirrer, thermometer, gas import and export mouthful, and logical nitrogen heats and starts stirring, in reacting under 100 ℃ till the system homogeneous transparent.Add the 100g aluminum chloride, heat and be stirred to and solidify, 100 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 200ml aqueous hydrochloric acid (PH<2) and 100ml ether, divide the phase of anhydrating after stirring, after ether is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium sulfite aqueous solution 200ml and stirred 12 hours, ether is washed with water to neutrality mutually, remove ether and get product, product is the transparent thick liquid of light brown.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 8.5meq/kg (not adding this product contrast oil sample is 33.1meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
Embodiment 13 adds tea-polyphenol 10kg, stearyl chloride 95kg, tosic acid 0.1kg in the 500L reactor that belt stirrer, thermometer, gas import and export mouthful, and logical nitrogen heats and starts stirring, in reacting under 80 ℃ till the system homogeneous transparent.Add the 30kg aluminum chloride, heat and be stirred to and solidify, 100 ℃ are incubated 1 hour in baking oven, are cooled to room temperature, add 100kg aqueous hydrochloric acid (PH<2) and 100L ether, divide the phase of anhydrating after stirring, after sherwood oil is used aqueous hydrochloric acid (PH<2) repetitive scrubbing 5 times mutually, add 20% sodium sulfite aqueous solution 150L and stirred 24 hours, ether is washed with water to neutrality mutually, remove oil and get product, product is the light brown transparent liquid.The commercially available hand label refining rape seed oil that adds this product of 200ppm is 11.6meq/kg (not adding this product contrast oil sample is 33.1meq/kg) at 60 ℃ of following constant temperature vibration POV after 10 days.
The invention is not restricted to the foregoing description, content of the present invention is described all can be implemented and the good effect of tool.

Claims (8)

1. preparation of oil soluble tea polyphenol derivative as edible oil antioxidant is characterized in that being made up of the following step:
(1) acylation reaction: 100 parts of (weight, back are together) tea-polyphenol, 50~1000 parts of acyl chlorides, 0.05~10 part of catalyzer adding belt stirrer, thermometer, gas are imported and exported in the reactor of mouth, logical nitrogen, heating is also stirred, be warming up to and react under 50~180 ℃ till the system homogeneous transparent, be cooled to room temperature;
(2) rearrangement reaction: reset auxiliary agent with 10~400 parts and add in the reactant, heat and be stirred to and solidify, place baking oven 100~180 ℃ of insulations 0.5~5 hour again, be cooled to room temperature, add 100~1000 parts of pH<2 acid/aqueous solution and 100~1000 parts of extraction agents again, the phase of anhydrating is divided in the back that stirs, and extraction agent is used the acid of pH<2/aqueous solution repetitive scrubbing 5 times mutually;
(3) reduction reaction: add 50~500 parts of 20% reductive agent/aqueous solution in above-mentioned product and stirred 5~72 hours, extraction agent is washed with water to neutrality mutually, removes extraction agent and promptly makes product, and product is transparent thick liquid of light brown or light brown powder.
2. by the preparation of oil soluble tea polyphenol derivative of the described edible oil antioxidant of claim 1, it is characterized in that:
In the described acylation reaction: acyl chlorides is 80~250 parts, and catalyzer is 0.5~5 part;
In the described rearrangement reaction: resetting auxiliary agent is 80~200 parts, and acid/aqueous solution is 100~400 parts: extraction agent is 100~200 parts;
In the described reduction reaction: 20% reductive agent/aqueous solution is 150~300 parts.
3. by the preparation of oil soluble tea polyphenol derivative of claim 1 or 2 described edible oil antioxidants, it is characterized in that: described acyl chlorides is at least a in the acyl chlorides of the acyl chlorides of valeryl chloride, caproyl chloride, oenanthyl chloro, capryl(yl)chloride, certain herbaceous plants with big flowers acyl chlorides, lauroyl chloride, nutmeg acyl chlorides, palmityl chloride, stearic acid chloride, soft ester acyl chlorides, oleic acyl chlorides, linoleic acyl chlorides, coconut oil and/or oleic acid.
4. by the preparation of oil soluble tea polyphenol derivative of claim 1 or 2 described edible oil antioxidants, it is characterized in that: described catalyzer is at least a in tosic acid, boron trifluoride diethyl etherate, sulfuric acid and/or the phosphoric acid.
5. by the preparation of oil soluble tea polyphenol derivative of claim 1 or 2 described edible oil antioxidants, it is characterized in that: described rearrangement agent is Zinc Chloride Anhydrous and/or aluminum trichloride (anhydrous).
6. by the preparation of oil soluble tea polyphenol derivative of claim 1 or 2 described edible oil antioxidants, it is characterized in that: described extraction agent is at least a in ether, sherwood oil and/or the hexanaphthene.
7. by the preparation of oil soluble tea polyphenol derivative of claim 1 or 2 described edible oil antioxidants, it is characterized in that: described reductive agent is at least a in zinc powder, the sulfurous gas aqueous solution, S-WAT, sodium bisulfite and/or the Sulfothiorine.
8. by the preparation of oil soluble tea polyphenol derivative of claim 1 or 2 described edible oil antioxidants, it is characterized in that: described acid is at least a in hydrochloric acid, sulfuric acid and/or the phosphoric acid.
CN00113162A 2000-09-05 2000-09-05 Preparation of oil soluble tea polyphenol derivative used as edible oil antioxidant Expired - Fee Related CN1106370C (en)

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CN105273011A (en) * 2014-07-11 2016-01-27 马井芳 Preparation method for tea polyphenol oil-soluble derivative used as anti-oxidant for edible oil
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