CN101461593A - Combined enzymolysis and solid-liquid biphase bleaching method for bleaching fresh water pearl - Google Patents
Combined enzymolysis and solid-liquid biphase bleaching method for bleaching fresh water pearl Download PDFInfo
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- CN101461593A CN101461593A CNA2008101437744A CN200810143774A CN101461593A CN 101461593 A CN101461593 A CN 101461593A CN A2008101437744 A CNA2008101437744 A CN A2008101437744A CN 200810143774 A CN200810143774 A CN 200810143774A CN 101461593 A CN101461593 A CN 101461593A
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Abstract
The invention relates to a bleaching process combining the freshwater pearl enzymolysis and the solid-liquid dual-phase bleaching. The invention comprehensively uses various technological means, bleaches pearls in a proper sequence, including: original pearl pre-treatment-biological enzyme bleaching-hot water bathing in constant temperature-ultrasonic wave treatment-immersing in dodecanol sulfate solution-solid phase covering-liquid phase oxidization-fluorescent whitening-polishing, and pearl product is finally obtained. The bleaching rate for pearl with light assorted color is up to above 95%, and the bleaching rate for pearl with dark color is up to 85%. Degree of finish is enhanced from the original I-II grade to II-III grade, individual flaw rate is below 5%, defects such as yellowing, blackspot or the like are overcome, pearl value is greatly enhanced without breaking original keratin construction of pearl, without damaging brightness of the pearl, and peeling of and bubbling of pearl are avoided.
Description
[technical field] the present invention relates to the method for bleaching of a kind of pearl, relates to a kind of method for bleaching that a kind of glucose protease combines with solid-liquid biphase bleaching specifically.
[background technology] pearl is the biomineralization material of the outer embrane emiocytosis of mollusk lamellibranchiata, Pteriidae, Pinctada animal, it is the crystallization of shell keratin and calcium carbonate, the little deposit that juxtaposition forms round a common core, the gorgeous U.S. of its color and luster is beautiful.Yet also contain some other trace element and coloring matter in the pearl, because outer field shell keratin steady chemical structure is water insoluble, be difficult to by general protease mass degradation, trace element is difficult to remove, and has influenced color and luster and the quality of pearl.It is that main liquid is to bleaching that present domestic pearl bleaching technical matters mainly adopts hydrogen peroxide, a spot of employing solid phase bleaching, take physical method promptly to adopt silicate to coat processing to pearl exactly, produce strong suction-operated, impurity, dirt and the absorption of bad pigment in the pearl are removed, reach reparation, recover the effect of gloss.Adopting liquid to bleaching, is that main bleaching agent boils bleaching in order to hydrogen peroxide exactly, and its effect is exactly to make the corrosion of shell keratin, produces small hole, and trace element and coloring matter ooze out from micropore, reach bleaching effect.Use these two kinds of technology all to have many problems separately, its bleachability effect is not good enough: shallow variegated pearl is 75%, and dark variegated pearl is 65%, and fineness only is the I-II level.Because the place of production of pearl is different with collecting time, the difference of water quality, water temperature, light, cause the pearl individuality to have defectives such as gloss, color distortion and blackspot, flaw, thereby make the time of bleaching action and condition be difficult to control, tend to destroy the microcellular structure of pearl, make its abrasion, foaming, yellowing etc., the gloss of pearl is not worked, reduced the self-value of pearl.
[summary of the invention] the invention provides a kind of new method for bleaching that utilizes glucose protease and solid phase adsorption and liquid phase oxidation method for bleaching to combine in order to solve the defective of above-mentioned pearl solid phase, the independent bleaching technology of liquid phase.
The method for bleaching that this fresh water pearl enzymolysis combines with solid-liquid biphase bleaching is characterized in that step is as follows:
One, preliminary treatment:
(1) with cell tissues such as mucus on the former bead surface of cleaning fresh water flush away and pearl sacs, soaks 5～10min with saturated brine then, remove residue mucus, dirt;
(2) then mix with powdery salt and pearl, weight ratio 2:1 ratio is rubbed wiping together;
(3) be that 40～60 ℃ medicament washs with temperature again, this medicament is that 0.1～1% sodium lauryl sulfate makes by adding weight concentration in the suds, to the inferior pearl of gloss dimness, washs secondary with above-mentioned medicament;
Two, just handle:
(1) pearl is placed in weight concentration 2～3.5% aqueous solution of protease and soaked 8～10 hours, water temperature is at 50～60 ℃, and pH value is regulated and control 6～6.5;
(2) pearl after will soaking, drying dehydration is put into 45～55 ℃ insulating box constant temperature and was handled 2 hours;
(3) hot water of pearl being put into 60～70 ℃ soaked 2 hours;
(4) pull pearl out, handled 40～50 minutes with ultrasonic wave then;
(5) in being 0.1～1% sodium lauryl sulfate, weight concentration soaked 8～10 hours;
(6) pearl is put into solid phase silicate, pearl was coated 8～10 hours;
(7) pearl is put into contain the mixed solution that weight concentration is 4%～7% peroxide, polyethylene glycol, dimethyl ether, pH value is adjusted between 6.5～7.5%, bleaches, and upgrades soak once, and changes 2～4 times in 48 hours;
(8) pearl is soaked in concentration is the water liquid of 0.2～0.3g/L fluorescent whitening agent, pH value brightens between 7～8;
(9) pearl is put into vibratory finishing machine, adopting material is that little walnut shell adds paraffin, its walnut shell granularity 0.1mm, and the time is 1 hour, promptly obtains the pearl of brilliant white and beautiful white, its fineness reaches the II-III level.
The described protease of step in just handling (1) can be used one or more in glucose protease, papain, the yellow bent plum keratinase.
The described peroxide of step in just handling (7) can be in hydrogen peroxide, peroxide urea, the peromag one or more.
The described fluorescent whitening agent of step in just handling (8), best is Leucophor.
Advantage of the present invention is: integrated use various technological means, according to appropriate order, pearl is bleached, that is: former pearl preliminary treatment-biology enzyme bleaching-constant temperature-hot bath-ultrasonic wave processing-sodium lauryl sulfate immersion-solid phase cladding-liquid phase oxidation-fluorescent brightening-polishing, obtain the pearl finished product at last, shallow variegated pearl bleaching rate is reached 95%, dark variegated pearl bleaching rate is reached 85%, fineness is brought up to the II-III level by original I-II level, individual flaw is below 5%, overcome yellowing, shortcomings such as blackspot, improved pearl value greatly, do not destroy the original shell keratin of pearl structure, do not damage the gloss of pearl, avoided pearl to peel off, bubble.
[specific embodiment] the present invention is further described below in conjunction with embodiment.
The decontamination of pearl, moist bleachability are sum * 100% of pearl grain number up to standard divided by pearl.According to the pearl classification standard of nineteen ninety-five country's formulation, the pearl of selecting 5 fineness grades compares pearl after the bleaching processing and the former pearl before the processing respectively, to determine the grade of fineness raising as marker with the standard pearl.
Example 1: get 100 on the former pearl of shallow variegated pearl (pearl of not punching),
One, preliminary treatment:
(1) with cell tissues such as mucus on the former bead surface of cleaning fresh water flush away and pearl sacs, soaks 5min with saturated brine then, remove residue mucus, dirt;
(2) then mix with powdery salt and pearl, weight ratio 2:1 ratio is rubbed wiping together;
(3) be that 40 ℃ medicament washs with temperature again, this medicament is that 0.1% sodium lauryl sulfate makes by adding weight concentration in the suds, to the inferior pearl of gloss dimness, washs secondary with above-mentioned medicament;
Two, just handle:
(1) pearl is placed in the weight concentration 2% glucose aqueous solution of protease and soaked 8 hours, water temperature is at 50 ℃, and pH value is regulated and control 6～6.5;
(2) pearl after will soaking, drying dehydration is put into 45 ℃ insulating box constant temperature and was handled 2 hours;
(3) hot water of pearl being put into 60 ℃ soaked 2 hours;
(4) pull pearl out, handled 40 minutes with ultrasonic wave then;
(5) be to soak 8 hours in 0.1% the sodium lauryl sulfate in weight concentration;
(6) pearl is put into the solid phase sodium metasilicate, pearl was coated 8 hours;
(7) pearl is put into contain the mixed solution that weight concentration is 4% hydrogen peroxide, polyethylene glycol, dimethyl ether, pH value is adjusted between 6.5～7.5, bleaches, and upgrades soak once, and changes 2 times in 48 hours;
(8) pearl is soaked in concentration is the water liquid of 0.2g/L Leucophor, pH value brightens between 7～8;
(9) pearl is put into vibratory finishing machine, adopting material is that little walnut shell adds paraffin, its walnut shell granularity 0.1mm, and the time is 1 hour, promptly obtains the pearl of brilliant white and beautiful white.
By the bleaching pearl that above-mentioned processing method obtains, epidermis is complete, fineness good, beautiful in colour, does not have Huang, melanin spot, and the moist rate of the decontamination of pearl is 96%, and fineness reaches the III level.
Example 2: get 100 on the former pearl of dark variegated pearl (pearl of not punching),
One, preliminary treatment:
(1) with cell tissues such as mucus on the former bead surface of cleaning fresh water flush away and pearl sacs, soaks 10min with saturated brine then, remove residue mucus, dirt;
(2) then mix with powdery salt and pearl, weight ratio 2:1 ratio is rubbed wiping together;
(3) be that 60 ℃ medicament washs with temperature again, this medicament is that 1% sodium lauryl sulfate makes by adding weight concentration in the suds, to the inferior pearl of gloss dimness, washs secondary with above-mentioned medicament;
Two, just handle:
(1) pearl is placed in the weight concentration 3.5% glucose aqueous solution of protease and soaked 10 hours, water temperature is at 60 ℃, and pH value is regulated and control 6～6.5;
(2) pearl after will soaking, drying dehydration is put into 55 ℃ insulating box constant temperature and was handled 2 hours;
(3) hot water of pearl being put into 70 ℃ soaked 2 hours;
(4) pull pearl out, handled 50 minutes with ultrasonic wave then;
(5) be to soak 10 hours in 1% the sodium lauryl sulfate in weight concentration;
(6) pearl is put into the solid phase potassium silicate, pearl was coated 10 hours;
(7) pearl is put into contain the mixed solution that weight concentration is 7% hydrogen peroxide, polyethylene glycol, dimethyl ether, pH value is adjusted between 6.5～7.5, bleaches, and upgrades soak once, and changes 4 times in 48 hours;
(8) pearl is soaked in concentration is the water liquid of 0.3g/L Leucophor, pH value brightens between 7～8;
(9) pearl is put into vibratory finishing machine, adopting material is that little walnut shell adds paraffin, its walnut shell granularity 0.1mm, and the time is 1 hour, promptly obtains the pearl of brilliant white and beautiful white.
By the bleaching pearl that above-mentioned processing method obtains, epidermis is complete, fineness good, beautiful in colour, does not have Huang, melanin spot, and the moist rate of the decontamination of pearl is 85%, and fineness reaches II～III level.
Claims (4)
1, a kind of method for bleaching of combining with solid-liquid biphase bleaching of fresh water pearl enzymolysis is characterized in that step is as follows:
One, preliminary treatment:
(1) with cell tissues such as mucus on the former bead surface of cleaning fresh water flush away and pearl sacs, soaks 5～10min with saturated brine then, remove residue mucus, dirt;
(2) then mix with powdery salt and pearl, weight ratio 2:1 ratio is rubbed wiping together;
(3) be that 40～60 ℃ medicament washs with temperature again, this medicament is that 0.1～1% sodium lauryl sulfate makes by adding weight concentration in the suds, to the inferior pearl of gloss dimness, washs secondary with above-mentioned medicament;
Two, just handle:
(1) pearl is placed in weight concentration 2～3.5% aqueous solution of protease and soaked 8～10 hours, water temperature is at 50～60 ℃, and pH value is regulated and control 6～6.5;
(2) pearl after will soaking, drying dehydration is put into 45～55 ℃ insulating box constant temperature and was handled 2 hours;
(3) hot water of pearl being put into 60～70 ℃ soaked 2 hours;
(4) pull pearl out, handled 40～50 minutes with ultrasonic wave then;
(5) in being 0.1～1% sodium lauryl sulfate, weight concentration soaked 8～10 hours;
(6) pearl is put into solid phase silicate, pearl was coated 8～10 hours;
(7) pearl is put into contain the mixed solution that weight concentration is 4%～7% peroxide, polyethylene glycol, dimethyl ether, pH value is adjusted between 6.5～7.5%, bleaches, and upgrades soak once, and changes 2～4 times in 48 hours;
(8) pearl is soaked in concentration is the water liquid of 0.2～0.3g/L fluorescent whitening agent, pH value brightens between 7～8;
(9) pearl is put into vibratory finishing machine, adopting material is that little walnut shell adds paraffin, its walnut shell granularity 0.1mm, and the time is 1 hour, promptly obtains the pearl of brilliant white and beautiful white, its fineness reaches the II-III level.
2, a kind of method for bleaching of combining with solid-liquid biphase bleaching of fresh water pearl enzymolysis according to claim 1 is characterized in that protease is one or more in glucose protease, papain, the yellow bent plum keratinase.
3, a kind of method for bleaching of combining with solid-liquid biphase bleaching of fresh water pearl enzymolysis according to claim 1 is characterized in that peroxide is one or more in hydrogen peroxide, peroxide urea, the peromag.
4, a kind of method for bleaching of combining with solid-liquid biphase bleaching of fresh water pearl enzymolysis according to claim 1 is characterized in that fluorescent whitening agent is a Leucophor.
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| CNA2008101437744A CN101461593A (en) | 2008-11-28 | 2008-11-28 | Combined enzymolysis and solid-liquid biphase bleaching method for bleaching fresh water pearl |
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| CNA2008101437744A CN101461593A (en) | 2008-11-28 | 2008-11-28 | Combined enzymolysis and solid-liquid biphase bleaching method for bleaching fresh water pearl |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906271A (en) * | 2010-07-27 | 2010-12-08 | 三亚海润珠宝有限公司 | Pearl polishing material prepared from corncobs and preparation method thereof |
| CN102669898A (en) * | 2011-03-08 | 2012-09-19 | 广东海洋大学 | Method for slowing down yellowing of bleached southern pearl |
| CN107981159A (en) * | 2017-11-29 | 2018-05-04 | 李赵生 | A kind of multistage substep discoloration method of Zingiber herbaceous plant fruit White Chloe |
| CN108577072A (en) * | 2018-04-02 | 2018-09-28 | 浙江天使之泪珍珠股份有限公司 | A kind of bleaching process in pearl process procedure |
| CN108652151A (en) * | 2018-04-02 | 2018-10-16 | 浙江天使之泪珍珠股份有限公司 | A kind of pretreatment color-protection toning process of colored pearl |
| CN108652153A (en) * | 2018-04-02 | 2018-10-16 | 浙江天使之泪珍珠股份有限公司 | A kind of neutralisation treatment technique in pearl process procedure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864578A (en) * | 2005-05-18 | 2006-11-22 | 浙江阮仕珍珠股份有限公司 | Enzyme-aided pearl bleaching process |
| CN101273809A (en) * | 2008-04-24 | 2008-10-01 | 中国科学院南海海洋研究所 | Pearl albefaction method mediated by keratinase and combined with redox |
-
2008
- 2008-11-28 CN CNA2008101437744A patent/CN101461593A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864578A (en) * | 2005-05-18 | 2006-11-22 | 浙江阮仕珍珠股份有限公司 | Enzyme-aided pearl bleaching process |
| CN101273809A (en) * | 2008-04-24 | 2008-10-01 | 中国科学院南海海洋研究所 | Pearl albefaction method mediated by keratinase and combined with redox |
Non-Patent Citations (2)
| Title |
|---|
| 宋慧春、范雁: "珍珠的漂白技术", 水产学报 * |
| 张小丽: "珍珠加工前处理研究", 湛江海洋大学学报 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906271A (en) * | 2010-07-27 | 2010-12-08 | 三亚海润珠宝有限公司 | Pearl polishing material prepared from corncobs and preparation method thereof |
| CN101906271B (en) * | 2010-07-27 | 2014-10-01 | 三亚海润珠宝有限公司 | Pearl polishing material prepared from corncobs and preparation method thereof |
| CN102669898A (en) * | 2011-03-08 | 2012-09-19 | 广东海洋大学 | Method for slowing down yellowing of bleached southern pearl |
| CN107981159A (en) * | 2017-11-29 | 2018-05-04 | 李赵生 | A kind of multistage substep discoloration method of Zingiber herbaceous plant fruit White Chloe |
| CN107981159B (en) * | 2017-11-29 | 2021-05-11 | 云南农业大学 | Multistage stepwise decolorization method for cardamom fruit of zingiberaceae herbaceous plant |
| CN108577072A (en) * | 2018-04-02 | 2018-09-28 | 浙江天使之泪珍珠股份有限公司 | A kind of bleaching process in pearl process procedure |
| CN108652151A (en) * | 2018-04-02 | 2018-10-16 | 浙江天使之泪珍珠股份有限公司 | A kind of pretreatment color-protection toning process of colored pearl |
| CN108652153A (en) * | 2018-04-02 | 2018-10-16 | 浙江天使之泪珍珠股份有限公司 | A kind of neutralisation treatment technique in pearl process procedure |
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Open date: 20090624 |