CN1058330A - Method for preparing leadless preserved eggs containing trace elements - Google Patents

Abstract

A kind of preparation method of leadless preserved eggs containing trace elements; adopt lead-free process; soak bright egg by the feed liquid that water, salt, NaOH, zinc sulfate, magnesium sulfate make, soaked bright egg dries after the formation diaphragm is smeared or dipped to liquid paraffin, and in time packing is sealed up for safekeeping.This egg had not only kept the local flavor of traditional lime-preserved egg and characteristic but also had eliminated lead as harmful matter, increase and replenished necessary trace element zinc and the magnesium of human body helping healthy.Replace the boiling water fuel saving to be beneficial to batch process with clean water.Old feed liquid reclaims, and can recycle repeatedly to have reduced production cost, reduced the environmental pollution that sewage discharge causes.

Description

Method for preparing leadless preserved eggs containing trace elements

The present invention relates to a kind of processing method of making egg again, method for preparing leadless preserved eggs containing trace elements.

Lime-preserved egg (lime-preserved egg) is the time-honored traditional local and special products typical local food of China, sugar carpel egg be unable to do without lead oxide when the processing materials, and lead oxide is a kind of noxious material, if for a long time edible leaded lime-preserved egg of people, will cause poisoning when lead runs up to some in vivo, the lead tolerance of state food law regulation lime-preserved egg is strict controlled in 3PPM for this reason.Show according to the nutrition survey result that in recent years it is comparatively general that current human body lacks zinc, children especially, health ministry was classified zinc one of as 10 kinds of food enrichments in 1986, added the zinc element in food.

Number of patent application 89105237.2 " method for preparing preserved eggs that contains zinc and coating-film fresh-keeping " is exactly a kind of unleaded lime-preserved egg that contains zinc, has cancelled the traditional handicraft of yellow mud and rice chaff bag egg, directly soaks egg with cellulose aqueous solution and dries the formation preservative film.

Outside deferrization zinc in the meals in the many areas of research, all lack necessary for human body trace element and macroelement in various degree, for ensureing that people's health also need increase needed different minerals element in food.

" contain the method for preparing leadless preserved eggs that human body must trace element " but unexposed complete technical scheme also can't be implemented as number of patent application 89103026.3, and the process-cycle longly needs infusion in 10～40 days.

The object of the present invention is to provide a kind of method for preparing leadless preserved eggs containing trace elements, not only keep the local flavor of traditional lime-preserved egg but also remove noxious material lead, introduce necessary trace element zinc and the magnesium of human body, and shortened the production cycle.Old feed liquid can recycle, and reduces cost, and reduces sewage discharge.

The present invention is achieved in that the feed liquid that is made by water, salt, NaOH, Zinc compounds, magnesium compound soaks bright egg; soaked bright egg dries the back and smears or dip the formation diaphragm with liquid paraffin; and in time packing is sealed up for safekeeping; add again in the feed liquid after the immersion by each solid for mulation * (1-(old feed liquid hydrochloric acid titer)/(new feed liquid hydrochloric acid titer)) and calculate the new amount of solid of gained, press again the content of water in the original formulation *

Quantity makes old feed liquid recycling use.

Accompanying drawing: process flow diagram of the present invention.

Below in conjunction with accompanying drawing embodiments of the invention are further described:

Zinc compounds is zinc sulfate, zinc oxide, and magnesium compound is magnesium sulfate, magnesia.

Zinc sulfate medically is being used as convergence, anticorrisive agent, be that a kind of mixed liquor of accelerating infiltrates the yolk center in lime-preserved egg processing, make lime-preserved egg evenly ripe, reduce alkaline matter and egg white injury, make the material of lime-preserved egg easy to shell, in lime-preserved egg is produced in order to replace lead oxide.As cathartic, injection uses as anticonvulsants magnesium sulfate in medical treatment, and it has the effect at black tea end in lime-preserved egg processing, makes the lime-preserved egg lovely luster, impels protein coagulation not change, and also has the effect that suppresses cancer cell.Water can be used the running water of cleaning.

Elder generation puts 2.35 kilograms of NaOH in the 50000ml water into and stirs, again with 1.9 kilograms of salt, and 0.08 kilogram of zinc sulfate, 0.026 kilogram of magnesium sulfate is put into 50000ml water respectively and is stirred, and the feed liquid of above-mentioned quantity can be soaked 1000 pieces in duck's egg.The bright egg that check is good is placed in the cylinder, be pressed with bamboo chip and weight above, again the above-mentioned feed liquid that has prepared is poured in the egg cylinder and soaked, making feed liquid exceed the egg face is advisable for 10～15 centimeters, above feed liquid refers to process blue or green shell duck's egg and is as the criterion, if the white shell duck's egg of processing also need add 6% water again to lower the concentration of feed liquid in above-mentioned feed liquid, the temperature in processing place should be controlled at about 20～25 ℃, soak that can to go out cylinder in 15 days edible, but at this moment egg is that big sugared heart color and luster is light.Can wash cleaning (must guard against water) when lime-preserved egg goes out cylinder in stoste puts the room ventilation place and in time dries, egg after drying is smeared or is dipped with the reagent solution paraffin body, egg after filming should in time be packed (whether periosteum liquid is not dry) available carton, plastic casing, plastic sheeting encapsulation, after the encapsulation of filming, place 20～25 ℃ of temperature to transfer again seven days, at this moment the sugared heart dwindles, in bright gay color edible or sale.It is 3 months that egg after the packing places the ventilation lucifugal place shelf-life about 5～20 ℃.

Also available zinc oxide, magnesia replace zinc sulfate, magnesium sulfate in the above-mentioned prescription by same proportioning, and same method is made lime-preserved egg.Also can use egg, quail egg to make lime-preserved egg.All recycle and reuse of old feed liquid of soaking.Earlier the NaOH in the virgin material formula of liquid is made basicity and measure,, get new feed liquid 25ml and be diluted to 250ml, therefrom get 25ml salt acidometric titration again, at this moment need use hydrochloric acid Xml with the titration of salt standard acid solution.Other gets old feed liquid 25ml, is diluted to 250ml, therefrom gets the salt acidometric titration of 25ml with above-mentioned same concentration, and the result need use hydrochloric acid Yml.Alkalescence ratio promptly old, new feed liquid is (Y)/(X), (Y)/(X)=(old feed liquid hydrochloric acid titer)/(new feed liquid hydrochloric acid titer), calculate the solid material of required interpolation thus, NaOH 2.35(1-(Y)/(X)) kilogram, salt 1.9(1-(Y)/(X)), zinc sulfate 0.08(1-(Y)/(X)) kilogram, magnesium sulfate 0.026(1-(Y)/(X)) kilogram, also need add old feed liquid in addition

$50000\×\left[\frac{1+(2.35+1.9+0.08+0.026)\frac{Y}{X}}{50000}\right]\mathrm{ml}$

。Increase by 1/4～1/3 formula material more generally speaking in original old feed liquid, can process a collection of bright egg again with above-mentioned immersion process again, concrete grammar is same as described above, does not repeat.So recycle, make full use of old feed liquid.

Compared with prior art: this technological operation is easy, and water can not need boiling water with general cleaning unboiled water, but fuel saving like this, and feed liquid can be prepared in Da Chi, is applicable to large-scale production.And the feed liquid of above-mentioned formulated is a clear soup, does not have marl, so also can remove from and wash egg technology, and small investment, cycle weak point, one-period is general only to need 15 days, has therefore improved economic benefit.Only needing in addition increases some formula materials, and former feed liquid still can be recycled, and has reduced cost, and old feed liquid is not re-used as sewage disposal, has reduced sewage disposal expense again, and another is increased economic efficiency.The lime-preserved egg that this prescription is made has kept the special favor of traditional lime-preserved egg, identify through Food Hygiene Surveillance section of health and epidemic prevention station, the content of zinc is 19.35mg/Kg(milligram/kilogram) (zinc content that human body needs is about 22mg/Kg), the content of magnesium is 6.5mg/Kg, plumbous content is 0.44mg/Kg less than the lead tolerance of the fresh duck's egg of 0.5mg/Kg(), main sanitary index has all reached national standard.

The deal that can regulate the zinc sulfate in the prescription for the lime-preserved egg that different zinc content is provided, adopt the prescription of 50000ml water, 1.9 kilograms of salt, 2.35 kilograms of NaOH, 0.10 kilogram of zinc sulfate, 0.03 kilogram of magnesium, the lime-preserved egg zinc content that makes is 23mg/Kg, and the content of magnesium is 7.2mg/Kg.

Claims (5)

1, a kind of preparation method of leadless preserved eggs containing trace elements is characterized in that

A. the feed liquid that is made by water, NaOH, Zinc compounds, magnesium compound is soaked bright egg, and soaked bright egg dries the back and smears or dip the formation diaphragm with liquid paraffin, and in time packing is sealed up for safekeeping;

B. add again in the feed liquid after soaking by various solid for mulation * (1-(old feed liquid hydrochloric acid titer)/(new feed liquid hydrochloric acid titer)) and calculate the new amount of solid of gained, press again the content of water in the original formulation *

Quantity makes old feed liquid recycling use.

2, preparation method according to claim 1, it is characterized in that Zinc compounds, magnesium compound in the feed liquid are zinc sulfate, zinc oxide, magnesium sulfate, magnesia, to soak 1000 pieces of blue or green shell duck's eggs is standard formula, earlier 2.35 kilograms of NaOH are put in the 50000ml water and stirred, again 1.9 kilograms of salt, 0.08 kilogram of zinc sulfate (or 0.10 kilogram of zinc sulfate), 0.026 kilogram of zinc sulfate (or 0.03 kilogram of magnesium sulfate) are put into 50000ml water respectively and stirred and make feed liquid.

3, preparation method according to claim 2 is characterized in that zinc oxide, the magnesia of available same quantity replaces zinc sulfate in the prescription, magnesium sulfate to use.

4, preparation method according to claim 1 is characterized in that water is unboiled water, the running water of cleaning, and the environment temperature of soaking bright egg is 20～25 ℃.

5, preparation method according to claim 1, NaOH 2.35(1-(Y)/(X) in addition again in the feed liquid after it is characterized in that soaking) kilogram, salt 1.9(1-(Y)/(X)) kilogram, zinc sulfate 0.08(1-(Y)/(X)) kilogram, magnesium sulfate 0.026(1-(Y)/(X)) kilogram, replenish old feed liquid

Images