CN101228956B - Healthy lead-free preserved egg and preparing method thereof - Google Patents

Healthy lead-free preserved egg and preparing method thereof Download PDF

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Publication number
CN101228956B
CN101228956B CN2007101145794A CN200710114579A CN101228956B CN 101228956 B CN101228956 B CN 101228956B CN 2007101145794 A CN2007101145794 A CN 2007101145794A CN 200710114579 A CN200710114579 A CN 200710114579A CN 101228956 B CN101228956 B CN 101228956B
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bismuth
egg
preserved egg
feed liquid
liquid
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CN101228956A (en
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徐珞
李宇
徐萌
张小千
徐葆筠
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Qingdao University
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Abstract

The invention provides a sanitary lead-free preserved egg, containing vitamins, proteins and a plurality of amino acids, as well as bismuth ions which can protect gastric mucosa. The preserved egg has no copper rust taste and acerbity feeling. The egg shows tea red, hawksbill or dark green color while the yolk shows dark brown or dark green color, sometimes the yellow color. The weight proportions of the components of solid and liquid in production are: bismuth compound of 3.0 to 5.7 portions, sodium hydroxide of 43 to 57 portions, sodium chloride of 25 to 45 portions and water of 1000 portions. Different colors are formed according to the amount of the bismuth. By adopting the bismuth compound as the accelerant in the solid and liquid in which the egg is soaked, the side effect caused by intaking lead and copper can be avoided. The prepared preserved egg has nice color, good taste, and non-toxic solid and liquid; precipitate free, waster free and pollution free. The reuse of the solid and liquid lowers the production cost. The bismuth is a common gastrointestinal treatment and health care drug, which is non-toxic and beneficial for health. So the preserved egg made by the bismuth compound is a green and health care and lead free preserved egg.

Description

A kind of healthy lead-free preserved egg and preparation method thereof
Technical field
The invention belongs to the fowls egg products field, specifically a kind of harmless and wholesome healthy lead-free preserved egg and preparation method thereof.
Background technology
Lime-preserved egg is China's traditional properties egg products, and tradition processing is major ingredient with lead, in order to ensure health, the plumbous content in lime-preserved egg of China's regulation must not surpass 3ppm (3/1000000ths, be 3mg pb/Kg), because of lead is poisonous, therefore the lime-preserved egg of various unleaded new prescriptions is just come out one after another.Application number is that to disclose a kind of " preparation for processing leadfree preserved egg collocation method " be to replace the high yellow lead powder of lead tolerance with copper sulphate for 91106347.1 Chinese patent.Chinese patent ZL00117458.4 " kidney invigorating leadless preserved egg and preparation method thereof " also discloses a kind of prescription that utilizes copper sulphate, zinc sulfate processing lime-preserved egg, avoided plumbous harm effectively to human body, but said method still has distinct disadvantage, because copper is toxic side effect also, long-term eating makes the copper intake too much, can cause diarrhoea, feels sick, vomits, go into a coma.Therefore the copper poisoning phenomenon can appear in excessive edible cupric lime-preserved egg, and in addition, the cupric lime-preserved egg has patina flavor and astringent taste, and mouthfeel is bad.In application number is 200510052042.0 Chinese patent " a kind of method for preparing lead-free preserved egg ", the technology that contains zinc sulfate and ferrous sulfate in a kind of soaking agent is disclosed, though do not use the compound that contains plumbous and copper in the technology, but be difficult to process lime-preserved egg with zinc and ferrous ion, and ferrous sulfate can generate the ferrous hydroxide precipitation in alkaline feed liquid, make troubles to manufacture craft.
Summary of the invention
The present invention is exactly in order to overcome the defective in the above-mentioned technology; propose a kind of harmless and useful; heavy metals such as not leaded, copper; the lime-preserved egg that mouthfeel is good and the preparation method of this lime-preserved egg thereof; in manufacturing process, be major ingredient with the bismuth compound; bismuth compound is nontoxic, and gastrointestinal mucosa is had protective effect, thereby is a kind of wholesome healthy lead-free preserved egg.
The objective of the invention is to realize by following technical scheme: a kind of healthy lead-free preserved egg, contain vitamin, protein and several amino acids, it is characterized in that also containing the bismuth ion that gastric mucosa is had protective effect, described lime-preserved egg does not have the patina flavor, does not have puckery sense.
Bismuth is with plumbous different with copper, not only bismuth is nontoxic, and is good for one's health.In medicine " bismuth agent " commonly used, as bismuth subnitrate, bismuth subcarbonate and stomach medicine bismuth aluminate and CBS etc., bismuth aluminate is the main component of stomach trouble preparation " stomach must be controlled ", chemical composition is Bi (A1O 3), bismuth compound can form diaphragm on the mucous membrane of stomach and intestine, can strengthen the gastrointestinal mucosa barrier, makes mucosa regeneration, promotes that ulcer surface heals quickly, this shows that the lime-preserved egg that contains bismuth compound is the green health lime-preserved egg.
The bismuth that detects in the lime-preserved egg can be used AAS, with the xylenol orange colour developing, surveys absorbance in 540m μ after digesting, and calibration curve is asked the content (ppm level) of bismuth in lime-preserved egg, and also available atomic absorption method detects.
Albumen is congo red look, tortoise or blackish green, and it is dark brown or blackish green that yolk is, and yellow is arranged.When protein tea is red, cut shell egg, red, green, yellow, brown presents together, and is very gorgeous, in manufacture craft, can form different colors according to the difference with the bismuth amount.
Each ingredients weight parts of feed liquid of using when healthy lead-free preserved egg is produced is: bismuth compound 3.0~5.7, NaOH 43~57, sodium chloride 25~45, water 1000.Wherein bismuth compound is as the coagulant in the bubble egg feed liquid.
The manufacture method of above-mentioned healthy lead-free preserved egg:
1. get the close harmless duck's egg of size, being washed till the egg skin with clear water does not totally have dirt, dries, in the cylinder of packing in regular turn;
2. add 1000 parts in water in another cylinder, add NaOH earlier according to feed liquid each component weight proportion, the limit edged stirs, until whole dissolvings, add bismuth compound again, stir and make dissolving fully, the back adds sodium chloride stirs, and is feed liquid after the dissolving, puts to room temperature stand-by;
3. the above-mentioned feed liquid for preparing is put into the egg cylinder, liquid level exceeds the egg face, presses egg, in order to avoid float; Lid cylinder mouth is put the lucifuge place;
4. after duck's egg soaks 20~25 days in feed liquid, feed liquid is taken out;
5. take out the egg that soaks, dry, use the atoleine coating-film fresh-keeping, packing.
According to the requirement of different mouthfeels, can in feed liquid, add seasoning water cooking liquid 0~9 weight portion again.
The seasoning water cooking liquid is a tealeaves, or flavoring, or capsicum, or tealeaves and flavoring or capsicum and flavoring be combined into, and through poach, gets its clear liquid, adds in the feed liquid that has prepared.Can require to add different flavorings according to people's mouthfeel.
The compound of bismuth is meant that all are added in the NaOH alkaline solution, can generate bismuthates root (BiO 3 3-) compound.
The compound of bismuth is oxide or bismuth salt or the bismuthates or the bismuth complex of bismuth.
The oxide of bismuth is bismuth oxide (Bi 2O 3); Bismuth salt is bismuth nitrate (Bi (NO 3) 3) or bismuth sulfate (Bi 2(SO 4) 3) or bismuth chloride (BiCl 3) or bismuth phosphate (BiPO 4) or waltherite (Bi 2(CO 3) 3) or bismuth aluminate (Bi (AlO 3) 3) or bismuth oxalate (Bi 2(C 2O 4) 3) or CBS; Bismuthates is sodium bismuthate (Na 3BiO 3) or bismuthic acid potassium (K 3BiO 3) or bismuthic acid calcium (Ca 3(BiO 3) 2) or bismuthic acid magnesium (Mg 3(BiO 3) 2) or bismuthic acid zinc (Zn 3(BiO 3) 2) or bismuthic acid amine (NH 4) 3BiO 3Complex is bismuth citrate or ethylenediamine tetra-acetic acid bismuth (Bi-EDTA).
There are a lot of sulfydryls (SH), can combine, in the duck's egg protein structure with Cu with metal ion 2+, Bi 3+Reaction.
The sulfydryl of duck's egg protein combines with metal ion, has changed original chemical constitution, has therefore caused sex change, impels the protein gelling, thereby has formed lime-preserved egg.The adhesion of metal ion and protein sulfhydryl can be estimated from the solubility product constant (being Ksp) of metal ion sulfide, because bismuth sulfide (Bi 2S 3) solubility product constant very little, so bismuth can combine well with the sulfydryl in the duck's egg protein, so bismuth compound is to make the comparatively ideal gelling agent of lime-preserved egg.
When batching, add NaOH in the water earlier, after the stirring and dissolving, add bismuth compound again, if use is bismuth salt, as Bi (NO 3) 3, when dissolving, have Bi (OH) 3White precipitate forms, dissolving gradually again after the stirring, and this is because following reaction has taken place:
Figure G200710114579420080414D000041
BiO 3-With Bi 3+Can be in poised state, when balance is moved to the left, BiO 3-Also can become Bi 3+From reacting as seen, bismuth salt needs to consume part NaOH in course of dissolution, when this occasion, preferably uses the NaOH of high share.
Used old feed liquid can be reused after regenerating, during regeneration, measure the concentration of NaOH, bismuth compound, sodium chloride in material liquid and the old feed liquid in regular turn, calculate the amount that each component should replenish according to the concentration difference of each component in two kinds of feed liquids and the stereometer of old feed liquid, weigh up the amount that this replenishes, join in regular turn in the feed liquid, add 1/4~1/3 of original amount.
When old feed liquid is regenerated, use acid-base titration with the NaOH concentration in hydrochloric acid standard solution titration material liquid and the old feed liquid earlier, obtain the weight that to augment NaOH according to the volume of old feed liquid, bi concns can be used the EDTA complexometric titration in the old feed liquid, obtain the bismuth compound amount that to augment, add according to quantity in the old feed liquid, the content of NaCl, available argentometry titration, obtain the NaCl amount that to augment, but NaCl only is used for transferring the halogen saline taste of lime-preserved egg, so also can add by rule of thumb, adds 1/4~1/3 of original amount usually and gets final product.
Advantage of the present invention is: owing to adopt bismuth compound as the coagulant in the bubble egg feed liquid, avoided toxic and side effect effectively because of the absorption of heavy metals such as lead, copper, color and luster is beautiful, mouthfeel is good, because the bismuth agent is common gastro-intestinal therapeutic and health medicine, nontoxic and good for health, so the lime-preserved egg that makes with bismuth compound is the green health lead-free preserved egg; Feed liquid is nontoxic, no precipitation, no waste, pollution-free; The recycling of feed liquid has reduced cost.
Description of drawings
Fig. 1 is that sulfydryl in the duck's egg protein structure of the present invention is (SH) with metal ion Cu 2+And Bi 3+The reaction schematic diagram,
Fig. 2 is a technological process block-diagram of the present invention.
The specific embodiment
Embodiment 1
Harmless duck's egg is selected, and by large, medium and small classification, got 1000 pieces in the close classification duck's egg of size, being washed till the egg skin with clear water does not totally have dirt, dries.Get a Porcelain Jar, a hole is made a call in the bottom, and a blowing liquid tap is installed, and clear water is cleaned, and dries, and fastens tap, will select egg and pack in regular turn in the cylinder.
Add 60 liters in water (or 60Kg) in another same Porcelain Jar, add NaOH_3.0Kg one by one, the limit edged stirs, and waits until whole dissolvings.In this alkali lye, add 0.26Kg sodium bismuthate (Na more one by one 3BiO 3), stir to make and dissolve fully, add NaCl (table salt) 2.1Kg again, stirring makes molten, places, and is cool to room temperature.This is prepared feed liquid put into the egg cylinder, make liquid level exceed the egg face, press egg with bamboo chip, in order to avoid float through tap.With Polypropylence Sheet lid cylinder mouth, and, put the lucifuge place with the rope bundle.
Duck's egg soaks 25 days in feed liquid after, feed liquid can be emitted in another cylinder from the bottom tap, wait to regenerate.The egg that taking-up soaks dries, and uses the atoleine coating-film fresh-keeping, after the packing, is finished product.
Embodiment 2
To select to clean and dry 1000 duck's egg major parts and enter in the cylinder in an orderly manner downwards.
Get black tea, Chinese prickly ash, aniseed 0.2Kg,, cook denseer color and hot fragrance with 1Kg poach 25min, stand-by.
Claim NaOH 3.4Kg, be dissolved in the 60Kg water, claim Bi (NO again 3) 30.34Kg, divide to be added in the NaOH solution for several times, add Bi (NO 3) 3At the beginning of, have Bi (OH) 3White precipitate generates, and through stirring dissolving immediately, continues to add Bi (NO 3) 3, the limit edged is mixed, until Bi (OH) 3Precipitation is dissolving all, claims NaCl 2.7Kg, adds NaOH-Bi (NO 3) 3In the solution, stirring makes molten, cools the back and adds condiment juice such as black tea end, stirs, and feed liquid promptly prepares, and is stand-by.
Cold to the feed liquid of room temperature is put into the duck's egg cylinder, soaked the about 8cm of egg face, build, seal, placed 20 days, can go out cylinder, after lime-preserved egg dries, use the atoleine coating-film fresh-keeping, pack for sale at the lucifuge place.
Embodiment 3
Enter in the cylinder in an orderly manner downwards selecting 1000 duck's egg major parts cleaning and dry.
Get black tea 0.05Kg, bind up with gauze, with 1.0Kg poach 15min, cook denseer color, it is stand-by to get its clear liquid.
Claim NaOH 2.5Kg, be dissolved in the 60Kg water, claim Bi again 2(SO 4) 30.18Kg, divide to be added in the NaOH solution for several times, add Bi 2(SO 4) 3At the beginning of, have Bi (OH) 3White precipitate generates, and through stirring dissolving immediately, continues to add Bi 2(SO 4) 3, the limit edged is mixed, until Bi (OH) 3Precipitation is dissolving all, claims NaCl 1.5Kg, adds NaOH-Bi 2(SO 4) 3In the solution, after stirring cools solution, black tea condiment juice is added, stir, feed liquid promptly prepares, and is stand-by.
Cold to the feed liquid of room temperature is put into the duck's egg cylinder, soaked the about 9cm of egg face, build, seal, placed 22 days, can go out cylinder, after lime-preserved egg dries, use the atoleine coating-film fresh-keeping, pack for sale at the lucifuge place.
Embodiment 4
Harmless duck's egg is selected, and by large, medium and small classification, got 1000 in the duck's egg that size is close after the classification, clean, make the egg skin not have dirt, in the egg cylinder of packing into after drying with clear water.
To from bubble has the cylinder of egg, put into another egg cylinder with later old feed liquid, in being placed with old feed liquid process, survey its volume (also can claim its weight, survey its proportion).
The supplying of the mensuration of NaOH concentration and concentration thereof in the old feed liquid: the concentration of NaOH is obtained the wherein concentration of NaOH with acid-base titration with the HCl standard solution titration in the old feed liquid, measure the concentration of NaOH in the material liquid with method of the same race, from both concentration differences and the volume of old liquid material, obtain the NaOH weight that to supply in the old feed liquid, by result of calculation, take by weighing NaOH, add one by one in the egg cylinder, stir and make dissolving.
The supplying of the mensuration of bi concns and concentration thereof in the old feed liquid: with the old feed liquid 25.00ml of pipette, extract, add water 100ml, use rare HNO 3Acidifying adds 2~5 pyrocatechol violet indicator, and is too high as showing purple or aubergine explanation acidity, uses NH 3H 2O solution transfers to solution and shows pure blue, is yellow with 0.05mol/L EDTA standard solution titration to solution by blue stain, is terminal point, asks bi content.1ml 0.05mol/L EDTA solution is equivalent to 10.45mg Bi.With measuring bi content in the material liquid with quadrat method, and as above calculate the Na that should add in the old feed liquid thus 3BiO 3Or the amount of other bismuth compounds.Weigh up and answer additional amount, add in the old feed liquid, stir and make dissolving, stand-by.
NaCl's is additional in the old feed liquid:
Add 0.5Kg NaCl in the feed liquid, stirring makes molten.The formation of lime-preserved egg also shows the nothing influence, and 1/4 (or some more slightly) that can add the material liquid addition get final product.
To put into the egg cylinder by the feed liquid cold after the proportioning regeneration to room temperature, liquid level exceeds egg face 6cm, covers completely, tightens.
Duck's egg can be discarded to material water in another cylinder after the regeneration feed liquid is soaked 25 days, waits to regenerate.The egg that taking-up soaks dries back atoleine coating-film fresh-keeping, packing.
The present invention contains the bismuth that gastric mucosa is had protective effect, also contain vitamin (VitA, VitB1, VitB2, VitE), protein and several amino acids (as lysine, methionine, phenylalanine, tyrosine, valine, arginine, histidine, alanine, aspartic acid, glutamic acid etc.), and cholesterol and trace element (as calcium, phosphorus, iron etc.); Mouthfeel is good, is better than lead, copper lime-preserved egg, and puckery sense is distinguished the flavor of, do not had in no patina; The albumen color is vivid, often is reddish brown or brown congo red look sometimes, and yolk is by green Huang and then the virescence once more of fading to.Egg presents gorgeous color after cutting.Bismuth is harmless and good for health, and this kind health care lime-preserved egg not only has health-care effect but also mouthfeel good, so the title healthy lead-free preserved egg.

Claims (8)

1. the manufacture method of a healthy lead-free preserved egg is characterized in that:
1. get the close harmless duck's egg of size, being washed till the egg skin with clear water does not totally have dirt, dries, in the cylinder of packing in regular turn;
2. add 1000 parts in water in another cylinder, add NaOH 43~57 earlier according to feed liquid each component weight proportion, the limit edged stirs, wait until whole dissolvings, add bismuth compound 3.0~5.7 again, stir and make dissolving fully, the back adds sodium chloride 25~45 stirs, and becomes feed liquid, puts to room temperature stand-by;
3. the above-mentioned feed liquid for preparing is put into the egg cylinder, liquid level exceeds the egg face, presses egg, in order to avoid float; Lid cylinder mouth is put the lucifuge place;
4. after duck's egg soaks 20~25 days in feed liquid, feed liquid is taken out;
5. take out the egg that soaks, dry, use the atoleine coating-film fresh-keeping, packing.
2. the manufacture method of a kind of healthy lead-free preserved egg according to claim 1 is characterized in that adding seasoning water cooking liquid 0~9 weight portion in feed liquid.
3. the manufacture method of a kind of healthy lead-free preserved egg according to claim 2 is characterized in that the seasoning water cooking liquid is a tealeaves, or flavoring, or capsicum, or tealeaves and flavoring or capsicum and flavoring be combined into, through poach, get its clear liquid, add in the feed liquid that has prepared.
4. the manufacture method of a kind of healthy lead-free preserved egg according to claim 1 is characterized in that the compound of bismuth is meant that all are added in the NaOH alkaline solution, can generate bismuthates root (BiO 3 3-) compound.
5. the manufacture method of a kind of healthy lead-free preserved egg according to claim 4, the compound that it is characterized in that bismuth is oxide or bismuth salt or the bismuthates or the bismuth complex of bismuth.
6. the manufacture method of a kind of healthy lead-free preserved egg according to claim 5, the oxide that it is characterized in that bismuth is bismuth oxide (Bi 2O 3); Bismuth salt is bismuth nitrate (Bi (NO 3) 3) or bismuth sulfate (Bi 2(SO 4) 3) or bismuth chloride (BiCl 3) or bismuth phosphate (BiPO 4) or waltherite (Bi 2(CO 3) 3) or bismuth aluminate (Bi (AlO 3) 3) or bismuth oxalate (Bi 2(C 2O 4) 3) or structure rafter acid bismuth potassium; Bismuthates is sodium bismuthate (Na 3BiO 3) or bismuthic acid potassium (K 3BiO 3) or bismuthic acid calcium (Ca 3(BiO 3) 2) or bismuthic acid magnesium (Mg 3(BiO 3) 2) or bismuthic acid zinc (Zn 3(BiO 3) 2) or bismuthic acid amine (NH 4) 3BiO 3Complex is bismuth citrate or ethylenediamine tetra-acetic acid bismuth (Bi-EDTA).
7. healthy lead-free preserved egg that any one method that adopts claim 1-6 is produced; contain vitamin, protein and several amino acids; it is characterized in that also containing the bismuth ion that gastric mucosa is had protective effect, described lime-preserved egg does not have the patina flavor, does not have puckery sense.
8. a kind of healthy lead-free preserved egg according to claim 7 is characterized in that albumen is congo red look, tortoise or blackish green, and it is dark brown or blackish green that yolk is, and yellow is arranged.
CN2007101145794A 2007-12-29 2007-12-29 Healthy lead-free preserved egg and preparing method thereof Expired - Fee Related CN101228956B (en)

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CN102342535A (en) * 2011-09-07 2012-02-08 昆明云岭广大种禽饲料有限公司 Making method of lead-free Yunnan Pu'er tea preserved eggs
CN104905308B (en) * 2015-07-06 2017-03-22 刘奇 Preparation technology for preserved duck egg

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CN1053737A (en) * 1991-03-06 1991-08-14 德州市解放北路副食调料加工部 Compounding method of preparation for processing leadfree preserved egg
CN1288670A (en) * 2000-09-30 2001-03-28 林绍文 Kidney invigorating leadless preserved egg and its making process
CN1826978A (en) * 2005-02-28 2006-09-06 陈元孔 Method for preparing lead-free preserved egg

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CN1288670A (en) * 2000-09-30 2001-03-28 林绍文 Kidney invigorating leadless preserved egg and its making process
CN1826978A (en) * 2005-02-28 2006-09-06 陈元孔 Method for preparing lead-free preserved egg

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