CN109884047A - The detection method of sugar in a kind of cereal - Google Patents
The detection method of sugar in a kind of cereal Download PDFInfo
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- CN109884047A CN109884047A CN201910305364.3A CN201910305364A CN109884047A CN 109884047 A CN109884047 A CN 109884047A CN 201910305364 A CN201910305364 A CN 201910305364A CN 109884047 A CN109884047 A CN 109884047A
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Abstract
The invention discloses a kind of detection methods of sugar in cereal, comprise the steps of, S1, sample are chosen；S2, sample process；S3, production sample solution；S4, production titer；S5, solution measurement；S6, blank solution production；S7, sugar content is calculated by formula.Its operating procedure of the method for sugar is simple in present invention detection cereal, and time for sample pretreatment is short, and starch gelatinization is thorough, has many advantages, such as quick, stabilization, and the grain sample sample defatting step time is fast, degreasing efficiency is high.
Description
Technical field
The present invention relates to sugar detection technique field, the detection method of sugar in specially a kind of cereal.
Background technique
Sugar is one of three major nutrient needed for human survival, is the guarantee for maintaining people's basic living energy, because
This, which needs to absorb a large amount of sugar from grain daily, meets daily consumption, and the sugar content in grain directly determines diet
Health problem, therefore the sugar content in grain is essential a part in state food safety verification, due to the kind of sugar
Class is more, structure is complicated and mostly isomers, and there are microheterogeneities.The prior art is logical to the detection method of sugar in cereal
The method for crossing Powerful Light Microscope or electron-microscope scanning observation sugar granule-morphology, this method detection time is long, is easy to influence
Testing result.
Summary of the invention
The purpose of the present invention is to provide a kind of detection methods of sugar in cereal, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the invention provides the following technical scheme: in a kind of cereal sugar detection method, comprising with
Lower step,
S1, sample are chosen: cereal sample to be measured being put into electric heating convection oven, electric heating convection oven is opened, to cereal sample
Originally it is dried, cereal sample is crushed using high speed disintegrator after dry, smashed cereal sample is collected, to crushing
Cereal afterwards is ground, and is screened to the cereal sample powder collected after grinding, is sieved by 100-120 mesh
Choosing takes out 20g as sample to be tested from the sample after screening；
S2, sample process: putting sample to be tested in the funnel for being placed with folded filter paper into, first right with 50 milliliters of diethyl ether solutions point 5 times
Cereal sample is rinsed, and removes the fat in grain sample, then with 100 milliliter 85% of ethanol solution to cereal sample again
It is rinsed, washes away the soluble saccharide in grain sample, the residue after flushing is moved into 250 milliliters of beaker, be used in combination
50 milliliters of 6N hydrochloric acid cleaning filter wash paper and funnel, the solution after cleaning are added in beaker；
S3, production sample solution: the beaker for filling sample is set in heating water bath pot and is heated 15 minutes, starch gelatinization is made, is taken out
Beaker, beaker be cooled to 60 DEG C hereinafter, plus 20 milliliters of amylase solutions, kept the temperature in 55-60 DEG C of heating water bath pot 1 small
When, and constantly solution is stirred；
S4, production titer: taking 1 drop sample solution to add on 1 drop iodine solution to glass plate, observe the mixed color of solution, if
Aobvious blue, then beaker is set in heating water bath pot and is heated, and adds 20 milliliters of amylase solutions, continue to add in 55-60 DEG C of water-bath
1 hour is kept the temperature in hot pot, until adding the not aobvious blue of iodine solution, the sample solution in beaker is carried out being heated to boiling, it is cooling
It is moved into 250 milliliters of volumetric flask afterwards, and adds appropriate distilled water, constant volume mixing is carried out to solution, then to the solution in volumetric flask
It is filtered, discards primary filtrate, take 50 milliliters of filtrates, be placed in 250 milliliters of conical flask, and add appropriate distilled water, be placed in water
It flows back 1 hour in bath heating kettle, Leng Houjia 2 drips methyl red indicator solution and enters in conical flask, and 25 milliliter 20% of hydrogen-oxygen is being added
Change sodium solution and be neutralized to neutrality, the solution after neutralization is transferred in 150 milliliters of volumetric flask, conical flask is washed, cleaning taper
Cleaning solution after bottle pours into 150 milliliters of volumetric flask, adds appropriate distilled water, mixes spare；
S5, solution measurement: drawing 50 milliliters of titer, and in 400 milliliters of beaker, 25 milliliters of alkaline cupric tartrate is added
Solution A and 25 milliliters of alkaline cupric tartrate second liquid carry out water proof heating to beaker, control water in one surface plate of beaker upper cover
Temperature makes the solution in beaker boil in 4 minutes, then heats 2 minutes to beaker, carries out decompression suction filtration with Buchner funnel, is used in combination
25 milliliters of ferrum sulfuricum oxydatum solutums and 25 milliliters of water are added extremely until cleaning solution is not in alkalinity in 60 DEG C of hot water washing beakers and precipitating
In beaker, it is completely dissolved cuprous oxide with glass rod stirring, blush is titrated to 0.1000N Standard Potassium Permanganate Solution；
S6, blank solution production: while measuring 50 milliliters of water and with same amount of amylase solution when sample solution processing in 400
In the beaker of milliliter, 25 milliliters of alkaline cupric tartrate solution A and 25 milliliters of alkaline cupric tartrate second are sequentially added to middle beaker
Liquid, to beaker carry out water proof heating, control water temperature, to beaker be heated to solution boiling, add 25 milliliters of ferrum sulfuricum oxydatum solutums and
25 milliliters of water are completely dissolved cuprous oxide into beaker, with glass rod stirring, are titrated to 0.1000N Standard Potassium Permanganate Solution
Blush obtains blank solution；
S7, sugar content is calculated by formula.
Preferably, the formula in S7 be X1=((A1-A2) × 0.9)/(m1 × 50/250 × V1/100 × 1000) ×
100, X1 be the content of starch in sample, and A1 is the content of reduced sugar in test sample, and A2 is reduced sugar in reagent blank
Content, 0.9 is converted into the conversion coefficient of starch for reduced sugar, and m1 is to weigh sample quality, and V1 is test sample treatment fluid
Volume.
Preferably, the production method of the 6N hydrochloric acid in S2 is that the hydrochloric acid of 50 milliliters of measurement is diluted with water to 100 milliliters.
Preferably, the amylase solution in S3 is 0.5% amylase solution, and production method is to weigh 0.5 gram of amylase, is added
100 milli liter of water.
Preferably, the production method of the iodine solution in S4 is to weigh 3.6 grams of potassium iodide to be dissolved in 20 milliliters of water, is added
1.3 grams of iodine is diluted with water to 100 milliliters after dissolution.
Preferably, the production method of the alkaline cupric tartrate solution A in S5 and S6 is the copper sulphate for weighing 34.639 grams, is added
Suitable quantity of water is dissolved, and 0.5 milliliter of sulfuric acid is added, and is added water and is diluted to 500 milliliters, is filtered with purification asbestos to solution.
Preferably, the production method of the alkaline cupric tartrate second liquid in S5 and S6 be weigh 173 grams of sodium potassium tartrate tetrahydrate with
50 grams of sodium hydroxide, adds suitable quantity of water to dissolve, and is diluted to 500 milliliters, is filtered with purification asbestos to solution.
Preferably, the production method of the ferrum sulfuricum oxydatum solutum in S5 and S6 is the ferric sulfate for weighing 50 grams, is added 200 milliliters
After water dissolution, 100 milliliters of sulfuric acid is added, 1000 milliliters are diluted with water to after cold.
Compared with prior art, the beneficial effects of the present invention are: the present invention detects its operation step of the method for sugar in cereal
Rapid simple, time for sample pretreatment is short, and starch gelatinization is thorough, have many advantages, such as quickly, stablize, and grain sample sample degreasing step
The rapid time is fast, and degreasing efficiency is high.
Specific embodiment
Technical scheme in the embodiment of the invention is clearly and completely described in face is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution: the detection method of sugar in a kind of cereal comprises the steps of,
S1, sample are chosen: cereal sample to be measured being put into electric heating convection oven, electric heating convection oven is opened, to cereal sample
Originally it is dried, cereal sample is crushed using high speed disintegrator after dry, smashed cereal sample is collected, to crushing
Cereal afterwards is ground, and is screened to the cereal sample powder collected after grinding, is sieved by 100-120 mesh
Choosing takes out 20g as sample to be tested from the sample after screening；
S2, sample process: putting sample to be tested in the funnel for being placed with folded filter paper into, first right with 50 milliliters of diethyl ether solutions point 5 times
Cereal sample is rinsed, and removes the fat in grain sample, then with 100 milliliter 85% of ethanol solution to cereal sample again
It is rinsed, washes away the soluble saccharide in grain sample, the residue after flushing is moved into 250 milliliters of beaker, be used in combination
50 milliliters of 6N hydrochloric acid cleaning filter wash paper and funnel, the solution after cleaning are added in beaker；
S3, production sample solution: the beaker for filling sample is set in heating water bath pot and is heated 15 minutes, starch gelatinization is made, is taken out
Beaker, beaker be cooled to 60 DEG C hereinafter, plus 20 milliliters of amylase solutions, kept the temperature in 55-60 DEG C of heating water bath pot 1 small
When, and constantly solution is stirred；
S4, production titer: taking 1 drop sample solution to add on 1 drop iodine solution to glass plate, observe the mixed color of solution, if
Aobvious blue, then beaker is set in heating water bath pot and is heated, and adds 20 milliliters of amylase solutions, continue to add in 55-60 DEG C of water-bath
1 hour is kept the temperature in hot pot, until adding the not aobvious blue of iodine solution, the sample solution in beaker is carried out being heated to boiling, it is cooling
It is moved into 250 milliliters of volumetric flask afterwards, and adds appropriate distilled water, constant volume mixing is carried out to solution, then to the solution in volumetric flask
It is filtered, discards primary filtrate, take 50 milliliters of filtrates, be placed in 250 milliliters of conical flask, and add appropriate distilled water, be placed in water
It flows back 1 hour in bath heating kettle, Leng Houjia 2 drips methyl red indicator solution and enters in conical flask, and 25 milliliter 20% of hydrogen-oxygen is being added
Change sodium solution and be neutralized to neutrality, the solution after neutralization is transferred in 150 milliliters of volumetric flask, conical flask is washed, cleaning taper
Cleaning solution after bottle pours into 150 milliliters of volumetric flask, adds appropriate distilled water, mixes spare；
S5, solution measurement: drawing 50 milliliters of titer, and in 400 milliliters of beaker, 25 milliliters of alkaline cupric tartrate is added
Solution A and 25 milliliters of alkaline cupric tartrate second liquid carry out water proof heating to beaker, control water in one surface plate of beaker upper cover
Temperature makes the solution in beaker boil in 4 minutes, then heats 2 minutes to beaker, carries out decompression suction filtration with Buchner funnel, is used in combination
25 milliliters of ferrum sulfuricum oxydatum solutums and 25 milliliters of water are added extremely until cleaning solution is not in alkalinity in 60 DEG C of hot water washing beakers and precipitating
In beaker, it is completely dissolved cuprous oxide with glass rod stirring, blush is titrated to 0.1000N Standard Potassium Permanganate Solution；
S6, blank solution production: while measuring 50 milliliters of water and with same amount of amylase solution when sample solution processing in 400
In the beaker of milliliter, 25 milliliters of alkaline cupric tartrate solution A and 25 milliliters of alkaline cupric tartrate second are sequentially added to middle beaker
Liquid, to beaker carry out water proof heating, control water temperature, to beaker be heated to solution boiling, add 25 milliliters of ferrum sulfuricum oxydatum solutums and
25 milliliters of water are completely dissolved cuprous oxide into beaker, with glass rod stirring, are titrated to 0.1000N Standard Potassium Permanganate Solution
Blush obtains blank solution；
S7, sugar content is calculated by formula.
It is sample that formula in S7, which is X1=((A1-A2) × 0.9)/(m1 × 50/250 × V1/100 × 1000) × 100, X1,
The content of starch in product, A1 are the content of reduced sugar in test sample, and A2 is the content of reduced sugar in reagent blank, and 0.9 is
Reduced sugar is converted into the conversion coefficient of starch, and m1 is to weigh sample quality, and V1 is the volume of test sample treatment fluid.
The production method of 6N hydrochloric acid in S2 is that the hydrochloric acid of 50 milliliters of measurement is diluted with water to 100 milliliters, the shallow lake in S3
Powder enzyme solutions are 0.5% amylase solution, and production method is to weigh 0.5 gram of amylase, add 100 milli liter of water.Iodine in S4 is molten
The production method of liquid is to weigh 3.6 grams of potassium iodide to be dissolved in 20 milliliters of water, adds 1.3 grams of iodine, is diluted with water after dissolution
To 100 milliliters.
The production method of alkaline cupric tartrate solution A in S5 and S6 is the copper sulphate for weighing 34.639 grams, add suitable quantity of water into
Row dissolution, adds 0.5 milliliter of sulfuric acid, adds water and be diluted to 500 milliliters, is filtered with purification asbestos to solution.In S5 and S6
The production method of alkaline cupric tartrate second liquid be to weigh 173 grams of sodium potassium tartrate tetrahydrate and 50 grams of sodium hydroxide, add suitable quantity of water
Dissolution, and 500 milliliters are diluted to, solution is filtered with purification asbestos.The production method of ferrum sulfuricum oxydatum solutum in S5 and S6
100 milliliters of sulfuric acid is added, is diluted with water to after cold after 200 milliliters of water dissolution is added for the ferric sulfate for weighing 50 grams
1000 milliliters.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. the detection method of sugar in a kind of cereal, it is characterised in that: it comprises the steps of,
S1, sample are chosen: cereal sample to be measured being put into electric heating convection oven, electric heating convection oven is opened, to cereal sample
Originally it is dried, cereal sample is crushed using high speed disintegrator after dry, smashed cereal sample is collected, to crushing
Cereal afterwards is ground, and is screened to the cereal sample powder collected after grinding, is sieved by 100-120 mesh
Choosing takes out 20g as sample to be tested from the sample after screening；
S2, sample process: putting sample to be tested in the funnel for being placed with folded filter paper into, first right with 50 milliliters of diethyl ether solutions point 5 times
Cereal sample is rinsed, and removes the fat in grain sample, then with 100 milliliter 85% of ethanol solution to cereal sample again
It is rinsed, washes away the soluble saccharide in grain sample, the residue after flushing is moved into 250 milliliters of beaker, be used in combination
50 milliliters of 6N hydrochloric acid cleaning filter wash paper and funnel, the solution after cleaning are added in beaker；
S3, production sample solution: the beaker for filling sample is set in heating water bath pot and is heated 15 minutes, starch gelatinization is made, is taken out
Beaker, beaker be cooled to 60 DEG C hereinafter, plus 20 milliliters of amylase solutions, kept the temperature in 55-60 DEG C of heating water bath pot 1 small
When, and constantly solution is stirred；
S4, production titer: taking 1 drop sample solution to add on 1 drop iodine solution to glass plate, observe the mixed color of solution, if
Aobvious blue, then beaker is set in heating water bath pot and is heated, and adds 20 milliliters of amylase solutions, continue to add in 55-60 DEG C of water-bath
1 hour is kept the temperature in hot pot, until adding the not aobvious blue of iodine solution, the sample solution in beaker is carried out being heated to boiling, it is cooling
It is moved into 250 milliliters of volumetric flask afterwards, and adds appropriate distilled water, constant volume mixing is carried out to solution, then to the solution in volumetric flask
It is filtered, discards primary filtrate, take 50 milliliters of filtrates, be placed in 250 milliliters of conical flask, and add appropriate distilled water, be placed in water
It flows back 1 hour in bath heating kettle, Leng Houjia 2 drips methyl red indicator solution and enters in conical flask, and 25 milliliter 20% of hydrogen-oxygen is being added
Change sodium solution and be neutralized to neutrality, the solution after neutralization is transferred in 150 milliliters of volumetric flask, conical flask is washed, cleaning taper
Cleaning solution after bottle pours into 150 milliliters of volumetric flask, adds appropriate distilled water, mixes spare；
S5, solution measurement: drawing 50 milliliters of titer, and in 400 milliliters of beaker, 25 milliliters of alkaline cupric tartrate is added
Solution A and 25 milliliters of alkaline cupric tartrate second liquid carry out water proof heating to beaker, control water in one surface plate of beaker upper cover
Temperature makes the solution in beaker boil in 4 minutes, then heats 2 minutes to beaker, carries out decompression suction filtration with Buchner funnel, is used in combination
25 milliliters of ferrum sulfuricum oxydatum solutums and 25 milliliters of water are added extremely until cleaning solution is not in alkalinity in 60 DEG C of hot water washing beakers and precipitating
In beaker, it is completely dissolved cuprous oxide with glass rod stirring, blush is titrated to 0.1000N Standard Potassium Permanganate Solution；
S6, blank solution production: while measuring 50 milliliters of water and with same amount of amylase solution when sample solution processing in 400
In the beaker of milliliter, 25 milliliters of alkaline cupric tartrate solution A and 25 milliliters of alkaline cupric tartrate second are sequentially added to middle beaker
Liquid, to beaker carry out water proof heating, control water temperature, to beaker be heated to solution boiling, add 25 milliliters of ferrum sulfuricum oxydatum solutums and
25 milliliters of water are completely dissolved cuprous oxide into beaker, with glass rod stirring, are titrated to 0.1000N Standard Potassium Permanganate Solution
Blush obtains blank solution；
S7, sugar content is calculated by formula.
2. the detection method of sugar in a kind of cereal according to claim 1, it is characterised in that: formula in S7 be X1=
((A1-A2) × 0.9)/(m1 × 50/250 × V1/100 × 1000) × 100, X1 is the content of starch in sample, and A1 is measurement
With the content of reduced sugar in sample, A2 is the content of reduced sugar in reagent blank, and 0.9 is converted into the conversion system of starch for reduced sugar
Number, m1 are to weigh sample quality, and V1 is the volume of test sample treatment fluid.
3. the detection method of sugar in a kind of cereal according to claim 1, it is characterised in that: the system of the 6N hydrochloric acid in S2
100 milliliters are diluted with water to as the hydrochloric acid that method is 50 milliliters of measurement.
4. the detection method of sugar in a kind of cereal according to claim 1, it is characterised in that: the amylase solution in S3
For 0.5% amylase solution, production method is to weigh 0.5 gram of amylase, adds 100 milli liter of water.
5. the detection method of sugar in a kind of cereal according to claim 1, it is characterised in that: the system of the iodine solution in S4
Making method is to weigh 3.6 grams of potassium iodide to be dissolved in 20 milliliters of water, adds 1.3 grams of iodine, 100 milliliters are diluted with water to after dissolution.
6. the detection method of sugar in a kind of cereal according to claim 1, it is characterised in that: the alkaline liquor in S5 and S6
The production method of stone acid copper solution A is to weigh 34.639 grams of copper sulphate, adds suitable quantity of water to be dissolved, adds 0.5 milliliter of sulfuric acid, then
500 milliliters are diluted with water to, solution is filtered with purification asbestos.
7. the detection method of sugar in a kind of cereal according to claim 1, it is characterised in that: the alkaline liquor in S5 and S6
The production method of stone acid copper second liquid is to weigh 173 grams of sodium potassium tartrate tetrahydrates and 50 grams of sodium hydroxides, adds suitable quantity of water to dissolve, and be diluted to
500 milliliters, solution is filtered with purification asbestos.
8. the detection method of sugar in a kind of cereal according to claim 1, it is characterised in that: the ferric sulfate in S5 and S6
The production method of solution is to weigh 50 grams of ferric sulfate, and after 200 milli liter of water are added, 100 milliliters of sulfuric acid of people are diluted with water after cold
To 1000 milliliters.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111198241A (en) * | 2020-03-17 | 2020-05-26 | 乐斯福(明光)有限公司 | Sugar content detection method for baking powder used in cold climate |
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| CN108130348A (en) * | 2018-03-09 | 2018-06-08 | 苏州富博宏新材料科技有限公司 | A kind of cleaning production technique for starch sugar |
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2019
- 2019-04-16 CN CN201910305364.3A patent/CN109884047A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108130348A (en) * | 2018-03-09 | 2018-06-08 | 苏州富博宏新材料科技有限公司 | A kind of cleaning production technique for starch sugar |
Non-Patent Citations (2)
| Title |
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| 中华人民共和国国家质量监督检验检疫总局: "《GB/T 5514-2008 粮油检验 粮食、油料中淀粉含量测定》", 4 November 2008 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111198241A (en) * | 2020-03-17 | 2020-05-26 | 乐斯福(明光)有限公司 | Sugar content detection method for baking powder used in cold climate |
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