GB/T 5009.77-2003 Analytical methods for hygienic standards of edible hydrogenated oils and margarine
Some standard content:
1 67. 040
National Standard of the People's Republic of China
GB/T5009.77-2003
Analysis method of hygienic standard of edible hydrogenated oil and margarine
Promulgated on August 11, 2003
Implemented on January 1, 2004
Ministry of Health of the People's Republic of China
Standardization Administration of China
G3/T5009.77—2003
This standard was drafted by the Ministry of Health of the People's Republic of China, the Shanghai Municipal Biosafety Station, and the Hunan Provincial Food and Drug Administration. 1
GB/T 5009.77--2003
Analysis methods for edible hydrogenated oil and margarine hygienic standard VI Standard specifies the analysis methods for various hygienic indicators of edible hydrogenated oil and margarine. No standard is applicable to the determination of hygienic indicators of edible hydrogenated oil and margarine. 2 Normative references
The documents listed below become clauses of this standard through the application of this standard. The documents with a specified date and all subsequent corrections (excluding the internal rate of continuation) or revisions are not consistent with this standard. However, the parties to this standard have studied whether the latest version of the document can be used. For all undated referenced documents, their updated versions shall apply to this standard. GB5009.-C Determination of moisture in foods
T0.6-23 Determination of moisture in foods
B/T5911-3 Determination of total potassium and inorganic salts in foods
GH/3004.12-2ca Determination of moisture in foods
GB:T 5009.13 2003
GB/T 5303.37
3 Sensory inspection
3.1 Colorimetry
3.1.1 Instrument
Size: 51rur.
3.1.2 Analysis steps
Use the analytical method of the sanitary standard for petroleum hygienic materials to pick up a small piece of the sample (11% product) from a clean environment and place it under medium heat. Observe it under natural light at room temperature, and then observe its reflected light against a colored background. The following indicators can be used: white, easterly white, cream, lemon, strong yellow, yellow, orange, etc.
3.2 Appearance
3.2.1 Analytical steps
3.2.1.1 Hold the clean glass and gently stir the test piece in the above five levels to test its residual volume. And record the following words: solid, solid, semi-solid, cavity, fluid, etc. 3.2.1.2 Use a clean tip to pick up a small piece of sample and place it in a clean container. Use your index finger to touch the surface of the sample and feel how it feels on both fingers. Then press the button to record the words: small, granular, delicate, etc. 3.3 Smell and taste
3. Collector
mL beaker.
3. 3. 7 Analysis steps
Place the glass in a 5\ cup and heat over low heat to 30, stir quickly with a glass whisk, smell its odor and take a small sample with a glass whisk. Taste its flavor, and then describe it by smell, such as burnt smell, sour smell, bright smell, oh smell, half-full smell, etc. The signature flavor can be described by taste, such as tempting, sour, spicy, mature, flat, and sweet. G/T 5009.77-2003
4 Physical and chemical tests
4.1 Acid value
4.1.1 Reagents
4.1.1.1 Phenolic acid indicator: 0.4% ethanol. 4.1.1.2 Acetaldehyde, ethanol mixture: acetaldehyde + ethanol (2 + 1) + 3.1>)mui/L hydrogen peroxide and precipitate until the indication is obtained.
4.1.1.3 0.100mal/L potassium hydroxide emulsion 4. 1, 2 Analysis steps
Weigh 11 samples and perform the following operations according to G/T500.37.-203. 4.1.3 Calculation of results According to the formula (1), X=Yxexbt.1, Acid value: V——Volume of potassium oxychloride standard solution for titration, in milliliters (mL); Concentration of potassium oxide standard solution, in milliliters (mn). 56.3-The number of milligrams of potassium oxide contained in 1 mL of standard sodium iodide (9.100 mol/L); -The mass of the test sample, in grams (g).
4.2: Transformation value Www.bzxZ.net
20032.2 operation,
according to GB/T 5009.37
4.3 Moisture
The self-drying method of GB/T5009.3--2003 is used for the determination of the content of margarine according to the vacuum drying method in H1509.32(3).
4.4 Fat
Volume method.
4.4. Non-principle
After the moisture content of the sample is determined, the residue is extracted with acetaldehyde and the ester content is obtained from the residual content. 4.4.2 Equipment
Electric onion drying,
No. 3 sand always drain,
Oil filter.
Put down the dryer.
4.4.3 Step by step
Take the sample after the moisture is constant, such as 10m. acid-free, stir the sample with a pan, other fat is dissolved, and then the oil is selected in a frying funnel that must be weighed first, and then 100mL of ethyl is used to wash the residual blood, and all are transferred to the sand funnel, draw out clean, and gradually dry the sand funnel at 15℃-105℃ for 2h, cool, and weigh to the same weight. 4. 4. 4 Calculation of results
See formula),
X = -ad-- X -- m = mx Ino
X-: fat content in artificial oil, g/100g (g/100g) X--water content in artificial milk pool, unit is g/100g/101m, ...-the mass of the sand core after filtration, unit is g) Trtg
the mass of the core before filtration, unit is g
the sampling mass, unit is light (g):
When testing artificial milk for sugar secretion, the extraction method of GB/15203.6-2003 shall be implemented. 4.5
4.5.1 The test shall be carried out according to G3/T500U.11-233.
4.5.2 Analysis steps
4.5.2.1 Sample treatment
CB/I5009.77—2003
Take 5.0% sample from evaporation plant or strong base, confirm acid mold 10% product, add iron 2R, dry on water, then move to low heat and heat continuously until the content is carbonized. Then add 10% acid product, carbonize at 55℃, the composition is white, add 10% acid 50mL, transfer 15ml at a time. Determine by salt method in triangular flow. Time-limited blank experiment, 4.5.2.2 Determination method
According to GB/T5:103.11—200, the first operation method is implemented: d.6 lead
4.6,! Atomic slow absorption spectrophotometry, according to GB/15009, 12-20034 method 1. The original absorption spectrophotometry is carried out in accordance with 4.6.2 double sulfur knee. Seven color method is carried out in accordance with B/T5309.12-20034 method 4. Double shock ratio method. 4.7 Spectroscopy
4. 7. 1 The first method
Atomic absorption spectrophotometry
4. 7. 1. 1 Preparation
After the sample has been treated, it is placed in an absorption spectrophotometer and the 232,Cnm resonance line is absorbed. Its absorption is proportional to the value of the standard sample and the quantitative result is compared with that of the standard sample
4.7.1.2 Reagents
Requirements: Use pure or high-purity test materials. 4.7.1.2. Standard solution: Accurately weigh 0.03% commercially pure sample, dissolve in nitric acid at a rate of 1:1, and then dilute with 1:1 distilled water to [0.1%] mg/mL. 4.7.1.2.2 Standard solution: Absorb 10.03% standard solution: Place in 100 mL of water and dilute immediately. This melting point is equivalent to 2.7.1, 2.3.5mof/L hydrochloric acid. Dilute to 96m with water. 4.7.1.2.41% (press to fractional salt: 2.
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