CN106588664A - Water-soluble caffeoyl structural grease, and preparation method and application thereof - Google Patents

Water-soluble caffeoyl structural grease, and preparation method and application thereof Download PDF

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Publication number
CN106588664A
CN106588664A CN201611010656.7A CN201611010656A CN106588664A CN 106588664 A CN106588664 A CN 106588664A CN 201611010656 A CN201611010656 A CN 201611010656A CN 106588664 A CN106588664 A CN 106588664A
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CN
China
Prior art keywords
water soluble
soluble coffee
caffeoyl
structure grease
grease
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Pending
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CN201611010656.7A
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Chinese (zh)
Inventor
李琳
姬莉莉
张霞
李冰
卞华伟
徐振波
苏健裕
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South China University of Technology SCUT
Third Affiliated Hospital Sun Yat Sen University
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South China University of Technology SCUT
Third Affiliated Hospital Sun Yat Sen University
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Publication of CN106588664A publication Critical patent/CN106588664A/en
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/66Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
    • C07C69/73Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of unsaturated acids
    • C07C69/732Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of unsaturated acids of unsaturated hydroxy carboxylic acids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/37Esters of carboxylic acids
    • A61K8/375Esters of carboxylic acids the alcohol moiety containing more than one hydroxy group
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • A61Q19/08Anti-ageing preparations
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00Preparation of oxygen-containing organic compounds
    • C12P7/62Carboxylic acid esters
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00Food compositions, function of food ingredients or processes for food or foodstuffs

Abstract

The invention belongs to the field of structural grease, and discloses water-soluble caffeoyl structural grease, and a preparation method and application thereof, in particular application thereof as an antioxidant. The chemical name of the water-soluble caffeoyl structural grease is 1-caffeoyl monoglyceride. The chemical structure is as shown in Formula (1). The invention also provides an enzymatic synthesis method. According to the method, an exchange reaction between caffeoyl acetate and glyceride is catalyzed by enzymes through a solvent-free system to prepare the 1-caffeoyl monoglyceride, so that the preparation of water-soluble caffeoyl derivatives is realized. The 1-caffeoyl monoglyceride is a new functional phenololipoid, has multiple physiological activities of caffeic acid, has higher antioxidant activity in both a water-soluble system and an alcohol-soluble system, and overcomes the defect of poor water solubility of the caffeic acid. Meanwhile, the 1-caffeoyl monoglyceride, serving as a potential natural water-soluble antioxidant substance, can be applied to the fields of emulsified food such as milk and functional grease and cosmetics, and has great economical and social values.

Description

A kind of water soluble coffee acid Structure grease and preparation method and application
Technical field
The invention belongs to Structure grease field, more particularly to a kind of water soluble coffee acid Structure grease and preparation method thereof with Using especially as the application of antioxidant.
Background technology
In recent years, gradually stepping up with people's quality of life and living standard, Structure grease as functional grease, by Gradually favored by people, such as a sweet ester can use a part for oil as feature emulsifying agent, DAG as family Edible oil is substituted, the effect with fat-reducing.With going deep into for research, constantly there is new Structure grease to enter the life of people.Phenol Fat contains one or more phenolic acid molecules as the new Structure grease of a class, on its molecular structure, and which not only has fatty acid Trophism, the also physiologically active with phenolic acid, are gradually paid close attention to by research worker.
Caffeic acid is a kind of small molecule polyphenol, with various physiologically actives such as scavenging hydroxyl, DPPH, ABTS etc. freely Base, suppresses Fyn Kinase activities, mitigates the skin canceration that UVB causes, and suppresses the sub- kinases of albumen and tyrosine-kinase enzyme activity, reduces Melanic generation, suppresses the growth and breeding of various bacteria, blood fat reducing and blood sugar effect, prevention cardiovascular and cerebrovascular disease etc..
Caffeic acid is relatively low in the dissolubility of aqueous solution systems, limits its application in hydrophilic system, therefore, prepare coffee The soluble derivative of acid can expand caffeinic range of application, and water soluble coffee acid Structure grease not only solves coffee Low solubility problem of the acid in aqueous environment, and which is used as the new phenol fat of a class, in functional food, medicine and cosmetics neck Domain is with a wide range of applications.
The content of the invention
In order to overcome the solubility that above-mentioned prior art caffeic acid itself is present with not enough, the primary and foremost purpose of the present invention It is that a kind of water soluble coffee acid Structure grease is provided.
Another object of the present invention is to provide a kind of preparation method of above-mentioned water soluble coffee acid Structure grease.
Still a further object of the present invention is to provide above-mentioned water soluble coffee acid Structure grease as Natural Antioxidants in breast The application in the field such as relieving dyspepsia product and cosmetics.
The purpose of the present invention is realized by following proposal:
A kind of water soluble coffee acid Structure grease, its chemical name is the mono- coffee acid glycerides (1-MCG) of 1-, chemical constitution As shown in following formula ():
The invention provides a kind of enzymatic synthesis method of above-mentioned water soluble coffee acid Structure grease, its reaction equation For:
Specifically include following steps:
Caffeic acetate is mixed with glycerol, heated and stirred, is lowered the temperature, add immobilized-lipase, isothermal reaction to separate, Obtain water soluble coffee acid Structure grease.
Caffeic acetate used is 1 with the mol ratio of glycerol:3~1:30.
The consumption of the immobilized-lipase is the 2~12% of caffeic acetate and glycerol gross mass.
Described immobilized-lipase can be Novozym435, Lipozyme 435, Lipozyme TL IM and At least one in Lipozyme RM IM.
The temperature of the heated and stirred is preferably 75~85 DEG C, and the heated and stirred is used to make caffeic acetate fill with glycerol Divide mixing, preferably stir 20~30min.
The cooling is preferably decreased to 55~75 DEG C.It is preferred that stirring after cooling after 20~30min makes system temperature constant again Add enzyme.
The time of the isothermal reaction is preferably 0.5~48h of stirring reaction.
The separation preferably includes following steps:Water dissolution reactant mixture, sucking filtration is added to be extracted to filtrate with dichloromethane Obtain upper layer of extraction liquid, crystallisation by cooling after vacuum concentrated by rotary evaporation.
Gained crystal is preferably by water washing and drying carries out purification.
The enzymatic synthesis method of the present invention, is prepared with glyceride transesterification reaction by solvent-free system enzymatic caffeic acetate The mono- coffee acid glycerides of 1-, realize the preparation of water soluble coffee acid derivative.In addition, the mono- coffee acid glycerides of 1- are a kind of new Phenol fat, be functional grease, with caffeinic various physiologically actives, which is respectively provided with stronger in water solublity and alcohol-soluble system Antioxidant activity, overcomes the weakness of caffeic acid poorly water-soluble, will further expand caffeinic application, while the mono- coffees of 1- Coffee acid glyceride can be applied to food (especially as antioxidant as a kind of potential natural Water-soluble antioxidant material It is the emulsified foods such as milk, functional grease) and the field such as cosmetics, with huge economy and social value.
The present invention is had the following advantages and beneficial effect relative to prior art:Preparation method of the present invention is using without molten Agent system enzymatic reaction, relative to prior art, reaction yield is high, the response time is short, and Product Byproduct is few, reaction condition temperature With, enzyme not easy in inactivation, and the product for producing has more preferable quality at aspects such as color and luster, local flavors, using immobilized-lipase, can To realize recycling and reusing for enzyme, so as to reduce production cost.
Description of the drawings
Fig. 1 is the liquid phase figure of the sample for reacting 0h (A) and 12h (B).
Fig. 2 is the mass spectrum of the mono- coffee acid glycerides of 1-.
Fig. 3 is the mono- coffee acid glycerides of 1-1H-NMR (A) and13C-NMR (B) figure.
Fig. 4 be the mono- coffee acid glycerides (1-MCG) of 1-, caffeic acetate (EC), caffeic acid (CA) DPPH free radicals it is clear Except the influence curve of vigor.
What Fig. 5 was represented be the mono- coffee acid glycerides (1-MCG) of 1-, caffeic acetate (EC), caffeic acid (CA) ABTS from The influence curve of vigor is removed by base.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited In this.
Reagent used in the following example can be obtained from commercial channel.
Embodiment 1:The preparation of water soluble coffee acid Structure grease
The caffeic acetate of 3mmol with 9mmol glycerol in reactor, 80 DEG C, 300rpm magnetic agitation 30min, afterwards After 65 DEG C of magnetic agitation 20min, 6% (w/w) immobilized-lipase Lipozyme TL IM are added to react 48h at 65 DEG C.With 40mL distills water dissolution reactant mixture, and decompression sucking filtration obtains filtrate, extracts filtrate, extraction 3~5 with 40mL dichloromethane every time It is secondary, upper layer of extraction liquid is collected, 50 DEG C of vacuum concentrated by rotary evaporations obtain about 10mL concentrated solutions crystallisation by cooling in 4 DEG C of refrigerators, afterwards Decompression sucking filtration obtains white crystal, and is washed with cold distilled water more than 3 times, is dried, obtains water solublity under room temperature low moisture environments Caffeic acid Structure grease powder.
Embodiment 2:The preparation of water soluble coffee acid Structure grease
The caffeic acetate of 3mmol with 30mmol glycerol in reactor, 80 DEG C, 300rpm magnetic agitation 30min, afterwards After 55 DEG C of magnetic agitation 20min, 12% (w/w) immobilized-lipase Lipozyme 435 is added to react 36h at 75 DEG C.Use 90mL Distillation water dissolution reactant mixture, decompression sucking filtration obtain filtrate, every time with about 90mL dichloromethane extraction filtrate, extraction 3~5 It is secondary, upper layer of extraction liquid is collected, 55 DEG C of vacuum concentrated by rotary evaporations obtain about 15mL concentrated solutions crystallisation by cooling in 4 DEG C of refrigerators, afterwards Decompression sucking filtration obtains white crystal, and is washed with cold distilled water more than 3 times, is dried, obtains water solublity under room temperature low moisture environments Caffeic acid Structure grease powder.
Embodiment 3:The preparation of water soluble coffee acid Structure grease
The caffeic acetate of 3mmol with 90mmol glycerol in reactor, 80 DEG C, 300rpm magnetic agitation 30min, afterwards After 65 DEG C of magnetic agitation 20min, 10% (w/w) immobilized-lipase Lipozyme RM IM are added to react 48h at 65 DEG C.With 100mL distills water dissolution reactant mixture, and decompression sucking filtration obtains filtrate, every time with about 100mL dichloromethane extraction filtrate, extraction Take 3~5 times, collect upper layer of extraction liquid, 45 DEG C of vacuum concentrated by rotary evaporations obtain about 20mL concentrated solutions and knot is cooled down in 4 DEG C of refrigerators Crystalline substance, the sucking filtration that reduces pressure afterwards obtain white crystal, and are washed with cold distilled water more than 3 times, be dried, obtain under room temperature low moisture environments Water soluble coffee acid Structure grease powder.
Embodiment 4:The Structural Identification of water soluble coffee acid Structure grease
(1) the water soluble coffee acid Structure grease for preparing embodiment 1 is dissolved in methanol (1mg/ml), and using efficient Liquid chromatograph is detected to which.Sample configures concrete operations:The first of the mono- coffee acid glycerides of 1- of 1mg/ml is prepared accurately Alcoholic solution, and with 0.22 μm of organic membrane filtration, be stored in the sample bottle of 2mL, it is to be measured.
Wherein high performance liquid chromatography is 2998 types of Waters, and testing conditions are:Chromatographic column:Symmetry C18 are anti-phase Chromatographic column, 4.6 × 250mm, 5 μm;Column temperature:25℃;Detection wavelength:325nm;Mobile phase:Mobile phase A:Pure methanol, Mobile phase B: 0.75% acetic acid;Flow velocity:1mL/min;Gradient elution program:0~15min, 35%A~75%A (65%~25%B), 15~ 19min, 75%A~35%A (25%~65%B), 19~24min, 35%A (65%B).As a result see Fig. 1.
(2) using Agilent 1290/maXis impact high-resolution mass spectrometers to water soluble coffee acid Structure grease Molecular weight and molecular formula are identified.Testing conditions are:Ion source:ESI+And ESI-;Capillary voltage:3.5kv;Taper hole voltage: 2kv;Mass-to-charge ratio sweep limitss:200~1000m/z.
Method according to above high performance liquid chromatography prepares sample and mobile phase, after sample introduction, the anti-phase colors of sample Jing SB-C18 After spectrum post (1.8 μm of 2.1 × 50mm of RRHD) is separated, in sample material according to polarity from sequentially entering high score to weak order by force Distinguish in mass spectrograph, ionize Jing after electro-spray ionization, charged particle enters ion hydrazine mass analyzer, detects charged particle, root According to the liquid phase appearance time of single coffee acid glyceride, so that it is determined that the molecular ion peak and fragment peak of single coffee acid glyceride, from And determine its molecular weight and molecular formula.As a result see Fig. 2.Product formula is C as seen from the figure12H14O6, molal weight is 254g/ mol。
(3) using 600 nuclear magnetic resonance analyser identification and analysis coffee acyls of Bruker Avance III HD on the glycerol backbone Position, be dissolved in deuterated dimethyl sulfoxide, use respectively1H/13C-NMR is detected and is mutually authenticated that testing result is shown in figure 3。
Concrete operations are that the 1- of at least 20mg purity more than 95% mono- coffee acid glyceride sample is dissolved in 0.75mL deuteriums For dimethyl sulfoxide, being sufficiently mixed is completely dissolved sample, draws the solvent of all sample dissolutions in nuclear-magnetism with 1mL liquid-transfering guns In detection pipe, nuclear magnetic tube is placed on Bruker Avance III HD 600M instrument sample platforms, instrument automatically into magnetic field simultaneously Start detection.
Determine that product is the sweet ester of the mono- caffeic acids of 1-, wherein the result of detailed nuclear-magnetism is as follows:
1H-NMR (600M) result is:3.38 (bimodal, 12a), 3.41 (bimodal, 12b), 3.70 (multiplet, 11), 4.00 (bimodal, 10a), 4.15 (bimodal, 10b), 4.65 (unimodal, O-3), 4.91 (unimodal, O-4), 6.26 (bimodal, 8), 6.77 is (double Peak, 1), 7.00 (it is bimodal, 6), 7.04 (unimodal, 4), 7.49 is bimodal, 7), 9.57 (unimodal, O-1), 9.14 (unimodal, O-2);
13C-NMR (600M) result is:63.13(12),66.09(10),66.91(11),114.51(4),115.25(8), 116.24(1),121.78(6),126.01(5),145.33(3),146.05(7),148.85(2),167.07(9)。
Structural formula is as follows:
Embodiment 5:The antioxidant activity research of water soluble coffee acid Structure grease
DPPH, ABTS method is respectively adopted to be detected, it is specific as follows:
(1) DPPH methods:Prepare DPPH free radical methanol solutions so as to 517nm locate absorbance be 0.5 ± 0.02 work Liquid.In reaction system, the 1- that the embodiment 1 of 0.3mL variable concentrations (0.02,0.05,0.1 and 0.2mM) is prepared is mono- The DPPH free radical working solutions of coffee acid glyceride solution and 2.7mL are added in brown reagent bottle, after being sufficiently mixed with it is ultraviolet- Visible spectrophotometer is surveyed once per 5min, determines change of its absorbance in 30min in 517nm mensuration absorbances Situation, investigates Scavenging activities of the 1-MCG of variable concentrations to DPPH free radicals, as a result sees Fig. 4.
(2) ABTS methods:ABTS solution is prepared with the phosphate buffer of pH 7.4 so as to be 0.5 in the absorbance of 734nm ± 0.02, obtain ABTS+Working solution.In reaction system, by 0.3mL variable concentrations (0.02,0.05,0.1 and 0.2mM) The mono- coffee acid glyceride solution of 1- and the ABTS of 2.7mL that embodiment 1 is prepared+Working solution is added to brown reagent bottle In, after being sufficiently mixed, its absorbance is determined in 734nm ultraviolet-visible spectrophotometers, survey once per 5min, determine which Situation of change of the absorbance in 30min, investigates the 1-MCG of variable concentrations to ABTS+Scavenging activity, as a result see Fig. 5.
As a result show, the water soluble coffee acid Structure grease of the present invention has stronger removing DPPH, ABTS free radical Ability, and antioxidation can be played in aqueous solution systems and alcohol-soluble system.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention not by above-described embodiment Limit, other any spirit without departing from the present invention and the change, modification, replacement made under principle, combine, simplification, Equivalent substitute mode is should be, is included within protection scope of the present invention.

Claims (10)

1. a kind of water soluble coffee acid Structure grease, it is characterised in that chemical name is the mono- coffee acid glycerides of 1-, chemical constitution As shown in following formula ():
2. the enzymatic synthesis method of the sour Structure grease of water soluble coffee described in a kind of claim 1, it is characterised in that concrete to wrap Include following steps:
Caffeic acetate is mixed with glycerol, heated and stirred, lowered the temperature, add immobilized-lipase, isothermal reaction to separate, obtain Water soluble coffee acid Structure grease.
3. the enzymatic synthesis method of water soluble coffee according to claim 2 acid Structure grease, it is characterised in that:Coffee used Coffee acetoacetic ester is 1 with the mol ratio of glycerol:3~1:30.
4. the enzymatic synthesis method of water soluble coffee according to claim 2 acid Structure grease, it is characterised in that:It is described solid The consumption of immobilized lipase is the 2~12% of caffeic acetate and glycerol gross mass.
5. the enzymatic synthesis method of water soluble coffee according to claim 2 acid Structure grease, it is characterised in that:Described Immobilized-lipase be Novozym435, Lipozyme 435, Lipozyme TL IM and Lipozyme RM IM at least It is a kind of.
6. the enzymatic synthesis method of water soluble coffee according to claim 2 acid Structure grease, it is characterised in that:It is described to add The temperature of thermal agitation is 75~85 DEG C.
7. the enzymatic synthesis method of water soluble coffee according to claim 2 acid Structure grease, it is characterised in that:The drop Temperature refers to and is reduced to 55~75 DEG C.
8. the enzymatic synthesis method of water soluble coffee according to claim 2 acid Structure grease, it is characterised in that:The perseverance The time of temperature reaction is 0.5~48h of stirring reaction.
9. the enzymatic synthesis method of water soluble coffee according to claim 2 acid Structure grease, it is characterised in that:Described point From comprising the following steps:Water dissolution reactant mixture, sucking filtration is added upper layer of extraction liquid to be obtained by extraction to filtrate with dichloromethane, Crystallisation by cooling after vacuum concentrated by rotary evaporation.
10. water soluble coffee acid application of the Structure grease in food and cosmetic field described in claim 1.
CN201611010656.7A 2016-10-26 2016-11-17 Water-soluble caffeoyl structural grease, and preparation method and application thereof Pending CN106588664A (en)

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Application publication date: 20170426