CN102783684A - Color protection method of pomegranate juice - Google Patents
Color protection method of pomegranate juice Download PDFInfo
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- CN102783684A CN102783684A CN2012103120311A CN201210312031A CN102783684A CN 102783684 A CN102783684 A CN 102783684A CN 2012103120311 A CN2012103120311 A CN 2012103120311A CN 201210312031 A CN201210312031 A CN 201210312031A CN 102783684 A CN102783684 A CN 102783684A
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- pomegranate
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Abstract
The invention provides a color protection method of pomegranate juice. The color protection method of the pomegranate juice includes three processing steps: passivation of activity of polyphenol oxidase, beta-cyclodextrin embedding and metal ion chelation. The color protection method solves the problem that the pomegranate juice is easy to oxidize, brown and fade in processing, producing and storing processes. The pomegranate juice processed by the method has the advantages of being bright in color, not prone to brown and fade and long in color retention period and can meet production and processing requirements of series products of concentrated pomegranate juice, pomegranate drinks, pomegranate wine and the like using the pomegranate juice as basic materials.
Description
Technical field
The present invention relates to a kind of color protecting method of juice of my pomegranate.
Background technology
Pomegranate has another name called if pomegranate, red if, day slurry, Punicaceae Punica plant, fruit is attractive in appearance bright-coloured, nutritious.Asia during pomegranate originates in.China pomegranate gross area a tree name incomplete data of planting is added up about 1,000,000 mu, ranks first in the world.Pomegranate contains abundant vitamin B1, B2 and vitamin C and nicotinic acid, potassium and phytoestrogen, and is very favourable to health.With the various beverages of juice of my pomegranate modulation, have help digest, anti-hyperhydrochloria, softening blood vessel, antidiarrheal, promote the production of body fluid, multiple functions such as detoxifcation, cooling.Often drink and to prevent coronary heart disease, hypertension, can be good for the stomach and refresh oneself, whet the appetite.Its in Europe, also there are the long history of drinking in states such as U.S.A, West Asia, except tempting color and luster as cocktail must composition, also enjoy favor with its unique nutritive value.Juice of my pomegranate is nutritious, total reducing sugar 14.49%, titratable acid 0.46%, soluble solid 15 in the fruit juice-and 16%, also contain rich in amino acid, polyphenols, these have anti-aging effect to human body.
Polyphenol oxidase (PPO) is the oxidoreducing enzyme of ubiquitous one type of cupric in the fruits and vegetables body.The enzymatic browning that juice of my pomegranate takes place mainly is because the oxidation reaction of the aldehydes matter in juice of my pomegranate is rich in PPO catalysis causes.Polyphenols in the juice of my pomegranate is oxidized to quinones substance by PPO, aggregates into the dark brown material again.Be non-enzymatic browning on the other hand; Reproducibility carbonyl material in the juice of my pomegranate and the free amine group generation maillard reaction in the amine compound; This is reflected under neutral and the alkali condition very fast; This is because amino acid amino when PH raises is dissociated out, for reaction provides more reactant, accelerates brown stain speed.Secondly, the less stable of pomegranate pigment is prone to take place cis-trans isomerization and oxidative degradation.Pomegranate pigment heat-resistant stability is better, but light, oxygen, metal ion etc. all can influence its stability.The pomegranate pigment loses in the presence of solar radiation and metal ion and is exceedingly fast, is easy to fade, therefore, because the particularity of juice of my pomegranate composition when storing or process juice of my pomegranate, as not protecting look, then has a strong impact on product quality.
Summary of the invention
Technical problem to be solved by this invention provides a kind of color protecting method of juice of my pomegranate, the easy oxidizing brown stain that the solution juice of my pomegranate exists in processing, production, storage process, the problem of fugitive color.
For solving the problems of the technologies described above, the invention provides a kind of color protecting method of juice of my pomegranate, comprise the activity, the β that juice of my pomegranate are carried out the passivation polyphenol oxidase-cyclodextrin embedding, three treatment steps of metal ion-chelant.
The step of the activity of said passivation polyphenol oxidase is: in juice of my pomegranate, add different Vc sodium, the mass percent concentration that different Vc sodium accounts for juice of my pomegranate is 0.20～0.25%, is heated to 70 ~ 80 ℃, is cooled to normal temperature behind retention time 10～15min.
Different Vc sodium can effectively suppress the juice of my pomegranate brown stain that polyphenol oxidase (PPO) causes; The PPO hear resistance in various sources is generally all relatively poor; Usually handle the activity that gets final product effective passivation PPO at short time high temperature more than 70 ℃; The present invention is heated to 70 ℃ ~ 80 ℃ with juice of my pomegranate, and retention time 10min～15min is the activity of inactive enzyme effectively, suppresses the brown stain of juice of my pomegranate.
The mass percent concentration that cyclodextrin, β-cyclodextrin account for juice of my pomegranate is 0.50～0.70% to said β-the cyclodextrin embedding step is: add β in the juice of my pomegranate behind the passivation polyphenol oxidase-, stirs at normal temperatures.The speed that stirs is 1000 rev/mins, evenly stirs 20～30 min.
β-cyclodextrin is a kind of of cyclodextrin; It is by 7 glucose molecules with α-the cyclic oligosaccharide that 1,4 glycosidic bond is formed by connecting, its significant architectural feature are to have a three-dimensional tubular hydrophobic cavity; Outer surface is a hydrophily; This special hydrophobic cavity, giving β-cyclodextrin can be with some hydrophobic groupings such as the embedding of pomegranate pigment, and forms stable supermolecule inclusion compounds.The stability of pomegranate pigment under conditions such as light, heat, acid, alkali will improve greatly after the inclusion.
Said metal ion-chelant step is: at β-add disodium ethylene diamine tetraacetate in the juice of my pomegranate after cyclodextrin embedding is handled, the mass percent concentration that disodium ethylene diamine tetraacetate accounts for juice of my pomegranate is 0.02～0.025%, evenly stirs 20～30 min.
Disodium ethylene diamine tetraacetate (EDTA) is a kind of metal ion chelation agent; Can with 20 surplus metal ion species form stable chelate; Especially strong with the sequestering power that promotes the iron ion that the pomegranate pigment fades under solar radiation, can delay fading of pomegranate pigment greatly.
Juice of my pomegranate after the color protecting method of a kind of juice of my pomegranate provided by the present invention is handled has the following advantages:
(1) juice of my pomegranate of preparing keeps original local flavor, free from extraneous odour;
(2) juice of my pomegranate of preparing has kept original color and luster, anti-brown stain, fugitive color not, overcome untreated juice of my pomegranate produce, processing, preserve in because color change influences the problem of product quality;
(3) juice of my pomegranate of preparing can further be processed products such as concentrated pomegranate fruit juice, pomegranate drink, pomegranate wine according to market demands, and the pomegranate pigment stability is high, and color and luster is malleable not.
In sum, the invention solves the easy oxidizing brown stain that juice of my pomegranate exists, the problem of fugitive color in processing, production, storage process.Juice of my pomegranate after the present invention handles possesses lovely luster, be difficult for the brown stain and the advantage of fugitive color, color and luster long shelf-life not, can satisfy with the juice of my pomegranate production and processing demand of the series of products such as concentrated pomegranate fruit juice, pomegranate drink, pomegranate wine that are base-material processing.
The specific embodiment
Through specific embodiment the present invention is described further below.
Being determined as of related juice of my pomegranate absorbance among the present invention: use UV-the absorption spectrum of 2000 type spectrophotometric determination juices of my pomegranate; Experimental condition is the cuvette of 1cm; Compare with distilled water; In wavelength is 460～550nm scope, measure the absorbance of the juice of my pomegranate that has just squeezed out, the result shows that juice of my pomegranate has maximum absorption band in the 515nm wavelength.Fixed wave length is the 515nm wavelength, measures the absorbance of juice of my pomegranate, and the result is 1.714.
Embodiment 1:
A kind of color protecting method of juice of my pomegranate is got pomegranate 500g, cleans; The peeling squeezing gets juice of my pomegranate 243 g, with the juice of my pomegranate suction filtration that obtains; Get pomegranate subsider juice 240 g, the pomegranate subsider juice is placed the 500ml beaker, add different Vc sodium 0.60 g; Place insulation processing 15min in 75 ℃ of thermostat water baths, the beaker taking-up is left standstill be cooled to room temperature; Add β-cyclodextrin 1.4 g, stir at normal temperatures, the mixer rotating speed is 1000 rev/mins, evenly stirs 25min; After stirring end, add disodium ethylene diamine tetraacetate 0.06 g, stirring 20min dissolves fully to disodium ethylene diamine tetraacetate and gets final product.
Contrast test:
Get above-mentioned juice of my pomegranate filling bottle after the juice of my pomegranate color protecting method is handled as experiment product;
Other gets pomegranate 500g, cleans, and the peeling squeezing gets juice of my pomegranate 243g, with the juice of my pomegranate suction filtration that obtains, gets pomegranate subsider juice 240 g, with gained juice of my pomegranate filling bottle, as reference substance.
All place water-bath to adopt pasteurize experiment product and reference substance; Sterilization mode is 75 ℃ and keeps 30min, places insulating box then, and the control temperature is 35 ℃; Place after 7 days and take out; Place again under the daylight and shone 2 hours, in the 515nm wavelength, the absorbance of difference determination experiment article and reference substance.
Experimental result is following:
Experiment product juice of my pomegranate color and luster remains the color and luster of fresh juice of my pomegranate basically, and no browning phenomenon occurs, and absorbance is 1.525.Reference substance juice of my pomegranate color and luster has browning phenomenon to occur, and original juice of my pomegranate redness is taken off basically, and absorbance is 0.031.
Embodiment 2:
A kind of color protecting method of juice of my pomegranate is got pomegranate 500g, cleans; The peeling squeezing gets juice of my pomegranate 243g, with the juice of my pomegranate suction filtration that obtains; Get pomegranate subsider juice 240 g, the pomegranate subsider juice is placed the 500ml beaker, add different Vc sodium 0.50 g; Place insulation processing 10min in 70 ℃ of thermostat water baths, the beaker taking-up is left standstill be cooled to room temperature; Add β-cyclodextrin 1.2 g, stir at normal temperatures, the mixer rotating speed is 1000 rev/mins, evenly stirs 20min; After stirring end, add disodium ethylene diamine tetraacetate 0.05 g, stirring 30min dissolves fully to disodium ethylene diamine tetraacetate and gets final product.
Contrast test:
Get above-mentioned juice of my pomegranate filling bottle after the juice of my pomegranate color protecting method is handled as experiment product;
Other gets pomegranate 500g, cleans, and the peeling squeezing gets juice of my pomegranate 243g, with the juice of my pomegranate suction filtration that obtains, gets pomegranate subsider juice 240 g, with gained juice of my pomegranate filling bottle, as reference substance.
All place water-bath to adopt pasteurize experiment product and reference substance; Sterilization mode is 75 ℃ and keeps 30min, places insulating box then, and the control temperature is 35 ℃; Place after 7 days and take out; Place again under the daylight and shone 2 hours, in the 515nm wavelength, the absorbance of difference determination experiment article and reference substance.
Experimental result is following:
Experiment product juice of my pomegranate color and luster remains the color and luster of fresh juice of my pomegranate basically, and no browning phenomenon occurs, and absorbance is 1.518.Reference substance juice of my pomegranate color and luster has browning phenomenon to occur, and original juice of my pomegranate redness is taken off basically, and absorbance is 0.032.
Embodiment 3:
Utilize the peeling automatically of pomegranate machinery, squeezing, press filtration, disinfection equipment in 10000 tons of pomegranate wine of Anhui Chengguo Pomegranate Wine Co., Ltd.'s yearly productive capacity production line, produce as a trial according to this technology.
Get pomegranate 50kg, clean, the peeling squeezing; Get juice of my pomegranate 25.6kg,, get pomegranate subsider juice 25.2k g the juice of my pomegranate suction filtration that obtains; The pomegranate subsider juice is placed the 50kg jacketed pan, add different Vc sodium 60g, logical jacket steam heating; Keep 80 ℃, 15min is handled in insulation, and logical cold water is reduced to room temperature with feed liquid in the jacketed pan chuck then; Add β-cyclodextrin 150g, stir at normal temperatures, the mixer rotating speed is 1000 rev/mins, evenly stirs 30min; After stirring end, add disodium ethylene diamine tetraacetate 6g, stirring 30min dissolves fully to disodium ethylene diamine tetraacetate and gets final product.
Contrast test:
Get above-mentioned juice of my pomegranate 240g filling bottle after the juice of my pomegranate color protecting method is handled as experiment product;
Other gets pomegranate 500g, cleans, and the peeling squeezing gets juice of my pomegranate 243g, with the juice of my pomegranate suction filtration that obtains, gets pomegranate subsider juice 240g, with gained juice of my pomegranate filling bottle, as reference substance.
All place water-bath to adopt pasteurize experiment product and reference substance; Sterilization mode is 75 ℃ and keeps 30min, places insulating box then, and the control temperature is 35 ℃; Place after 7 days and take out; Place again under the daylight and shone 2 hours, in the 515nm wavelength, the absorbance of difference determination experiment article and reference substance.
Experimental result is following:
Experiment product juice of my pomegranate color and luster remains the color and luster of fresh juice of my pomegranate basically, and no browning phenomenon occurs, and absorbance is 1.615.Reference substance juice of my pomegranate color and luster has browning phenomenon to occur, and original juice of my pomegranate redness is taken off basically, and absorbance is 0.030.
Above-described only is three kinds of embodiments of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the principle of the invention, can also make conspicuous some conversion or alternative and remodeling, these also should be regarded as belonging to protection scope of the present invention.
Claims (5)
1. the color protecting method of a juice of my pomegranate comprises the activity, the β that juice of my pomegranate are carried out the passivation polyphenol oxidase-cyclodextrin embedding, three treatment steps of metal ion-chelant.
2. the color protecting method of a kind of juice of my pomegranate according to claim 1; It is characterized in that: the step of the activity of said passivation polyphenol oxidase is: in juice of my pomegranate, add different Vc sodium; The mass percent concentration that different Vc sodium accounts for juice of my pomegranate is 0.20～0.25%; Be heated to 70 ~ 80 ℃, be cooled to normal temperature behind retention time 10～15min.
3. the color protecting method of a kind of juice of my pomegranate according to claim 1; It is characterized in that: said β-the cyclodextrin embedding step is: add β in the juice of my pomegranate behind the passivation polyphenol oxidase-cyclodextrin; The mass percent concentration that β-cyclodextrin accounts for juice of my pomegranate is 0.50～0.70%, stirs at normal temperatures.
4. the color protecting method of a kind of juice of my pomegranate according to claim 3, it is characterized in that: the speed of said stirring is 1000 rev/mins, evenly stirs 20～30 min.
5. the color protecting method of a kind of juice of my pomegranate according to claim 1; It is characterized in that: said metal ion-chelant step is: at β-add disodium ethylene diamine tetraacetate in the juice of my pomegranate after cyclodextrin embedding is handled; The mass percent concentration that disodium ethylene diamine tetraacetate accounts for juice of my pomegranate is 0.02～0.025%, evenly stirs 20～30 min.
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| CN2012103120311A CN102783684A (en) | 2012-08-29 | 2012-08-29 | Color protection method of pomegranate juice |
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| CN2012103120311A CN102783684A (en) | 2012-08-29 | 2012-08-29 | Color protection method of pomegranate juice |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105111777A (en) * | 2015-09-08 | 2015-12-02 | 湖州新创丝织品有限公司 | Novel Chinese rose pigment applicable to textile dyes and preparation method thereof |
| CN105724991A (en) * | 2016-02-29 | 2016-07-06 | 华中农业大学 | Apple juice processing method for suppressing enzymatic browning |
| CN105747060A (en) * | 2016-02-26 | 2016-07-13 | 暨南大学 | Health beverage capable of promoting multiplication of intestinal bifidobacterium as well as preparation method and application of health beverage |
| CN106819754A (en) * | 2017-03-17 | 2017-06-13 | 西华师范大学 | A kind of suppression No. 100 methods of orange juice brown stain of brocade orange |
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| CN101167589A (en) * | 2007-11-28 | 2008-04-30 | 耿福能 | Concentrated granada juice and preparation technology thereof |
| CN101940347A (en) * | 2010-05-12 | 2011-01-12 | 邓丕毛 | Loquat pulp color fixative and methods for preparing and storing loquat pulp at normal temperature |
| CN102283412A (en) * | 2010-06-17 | 2011-12-21 | 张明 | Grenadine juice and preparation method thereof |
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| CN101167589A (en) * | 2007-11-28 | 2008-04-30 | 耿福能 | Concentrated granada juice and preparation technology thereof |
| CN101940347A (en) * | 2010-05-12 | 2011-01-12 | 邓丕毛 | Loquat pulp color fixative and methods for preparing and storing loquat pulp at normal temperature |
| CN102283412A (en) * | 2010-06-17 | 2011-12-21 | 张明 | Grenadine juice and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105111777A (en) * | 2015-09-08 | 2015-12-02 | 湖州新创丝织品有限公司 | Novel Chinese rose pigment applicable to textile dyes and preparation method thereof |
| CN105747060A (en) * | 2016-02-26 | 2016-07-13 | 暨南大学 | Health beverage capable of promoting multiplication of intestinal bifidobacterium as well as preparation method and application of health beverage |
| CN105724991A (en) * | 2016-02-29 | 2016-07-06 | 华中农业大学 | Apple juice processing method for suppressing enzymatic browning |
| CN105724991B (en) * | 2016-02-29 | 2018-06-12 | 华中农业大学 | A kind of cider processing method that can inhibit enzymatic browning |
| CN106819754A (en) * | 2017-03-17 | 2017-06-13 | 西华师范大学 | A kind of suppression No. 100 methods of orange juice brown stain of brocade orange |
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