ICS83.180
Classification number: G39
Registration number: 16404-2005
Light Industry Standard of the People's Republic of China
QB/T1995-2005
Replaces QB/T1995-1994
Industrial gelatin
Industrial gelatin
Issued on July 26, 2005
Implementation on January 1, 2006
Issued by the National Development and Reform Commission of the People's Republic of China Foreword
This standard is a revision of QB/T1995-1994 "Industrial gelatin". Compared with QB/T1995-1994, this standard has the following major revisions: The classification method and some technical indicators of industrial gelatin have been adjusted: The water content of the sample itself is no longer considered during testing; QB/T1995-2005
renamed the jelly strength to the freezing strength, deleted the determination of freezing concentration, added the determination of pH and heavy metals (in terms of Pb), revised the determination methods of moisture, freezing strength, ash content and water-insoluble matter, etc.; revised the inspection rules and marking, packaging, transportation and storage. This standard was proposed by the China Light Industry Federation. This standard is under the jurisdiction of the Gelatin Branch of the China Daily Chemical Industry Association. This standard was drafted by the National Light Industry Three-Gel Product Quality Supervision and Inspection Center (Beijing), and Shanghai Shuangfenggu Gelatin Co., Ltd., Wenzhou Sanhesheng Gelatin Co., Ltd., Zhejiang Pingyang County Sanming Food Additive Factory, Zhejiang Feipeng Gelatin Co., Ltd., and Jiangsu Hai'an County Shenyu Gelatin Co., Ltd. participated in the drafting.
This standard was first issued in 1981, revised for the first time in 1994, and this is the second revision. From the date of implementation, this standard replaces the light industry standard QB/T1995-1994 "Industrial Gelatin" issued by the former China Light Industry Association. 1 Scope
Industrial Gelatin
QB/T1995-2005
This standard specifies the requirements, test methods, inspection rules and marking, packaging, transportation and storage of industrial gelatin. This standard applies to industrial gelatin produced from animal skins, bones, etc. as raw materials. 2 Normative References
The clauses in the following documents become the clauses of this standard through reference in this standard. For all referenced documents with a notified date, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard GB/T191 Pictorial marking for packaging, storage and transportation
GB6783-1994 Food additive gelatin
3 Requirements
3.1 Production process requirements
Chemicals that can increase viscosity should not be added to various types of industrial gelatin. 3.2 Sensory requirements
The product is light yellow or gray-brown fine particles, odorless, and free of impurities visible to the naked eye. 3.3 Physical and chemical indicators
Should meet the requirements of Table 1.
Water/% (mass fraction)
Blaine viscosity (12.5% solution)/(mPa-s)Frost strength (12.5% solution)/(Bloomg)Ash/% (mass fraction)
PH (1% solution)
Water insoluble matter/% (mass fraction)
Heavy metal (in terms of Pb)/(mg/kg)
4Test method
Indicator requirements
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Unless otherwise specified, only reagents confirmed as analytically pure and distilled water or deionized water or water of equivalent purity are used in the analysis. The solutions required for the determination are all aqueous solutions unless otherwise specified, and their concentrations are expressed in mass fractions. The water content of the sample itself is not considered during the test. 4.1 Preparation of test solution
Weigh a certain amount of industrial gelatin, accurate to 0.1g, put it into a dry and clean container, add a certain amount of water, and place it at a room temperature of about 20℃ for 2h to allow it to fully absorb water and swell. Then place the container in a water bath at 65℃ and dissolve it into a uniform liquid within 15min. Finally, add water to reach the specified concentration.
4.2 Water
4.2.1 Principle
Bake the industrial gelatin at 105℃ to constant weight, and calculate the water content of the industrial gelatin based on the reduction in mass. 4.2.2 Instruments
4.2.2.1 Glass weighing bottle or aluminum box or stainless steel box. 4.2.2.2 Drying oven: controllable temperature at (105±2)℃4.2.2.3 Analytical balance.
4.2.3 Analysis steps
4.2.3.1 Place a glass flat weighing bottle (or aluminum box or stainless steel box) with known constant weight in a drying oven at (105±2)℃, with the bottle cap tilted on the bottle side, heat for 0.5h~h, and take it out. Cover it, cool it in a desiccator for 0.5h, weigh it, and repeat the drying to constant weight, accurate to 1mg.
4.2.3.2 Weigh (1±0.1)g of industrial gelatin, accurate to 1m, put it in a weighing bottle, cover it, weigh it accurately, and place it in a (105±2)℃ oven, with the bottle cap tilted on the bottle side, heat it for 2h~4h, cover the weighing bottle tightly in the oven, take it out and place it in a desiccator, cool it to room temperature, and weigh it on an analytical balance. .
4.2.3.3 Move the weighing bottle to the oven again and dry for 0.5h, then take it out and place it in a desiccator, cool it to room temperature, and weigh it on an analytical balance. The difference between the two masses is less than 2m, which is constant weight. 4.2.4 Calculation of results
The moisture content in the sample is expressed in %, calculated according to formula (1). Xm-m2x100
Where:
X, — the moisture content in the sample, %: m
m — the mass of the weighing bottle and the sample after drying, in grams (g): m. — the mass of the weighing bottle, in grams (g). The calculation result is expressed to one decimal place. 4.2.5 Precision
The absolute difference between two independent determination results obtained under repeatability conditions is not greater than 0.4%. 4.3 Blaine viscosity
4.3.1 Principle
At 60℃, measure the time it takes for 100mL of industrial gelatin solution (12.5%) to flow through a standard capillary, and then convert it into a viscosity value. 4.3.2 Instrument
4.3.2.1 Assembly Blaine viscometer: volume 100mL, mainly composed of the upper funnel and the standard capillary at the bottom (see Figure 1). When installing, the instrument should have a constant temperature jacket to keep it at a constant temperature of (60±0.1)℃. 4.3.2.2 Super thermostat: The constant temperature can be adjusted to (600.1)℃. 4.3.2.3 Stopwatch: accurate to 0.1s.
4.3.2.4 Erlenmeyer flask: 250mL
4.3.2.5 Water bath: adjustable to (65±1)℃C4.3.2.6 Thermometer: accurate to 0.1℃
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4.3.3 Analysis steps
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Figure 1 Blaine viscometer
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QB/T1995-2005
Unit: mm
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4.3.3.1 Prepare industrial gelatin solution (12.5%) in a conical flask. The amount required for one measurement is 100 mL. Cool the gelatin solution to about 61°C. 4.3.3.2 Turn on the super thermostat to make the temperature of the water flowing through the viscometer jacket (60±0.1)°C. 4.3.3.3 Use your finger to hold the end of the capillary tube, and avoid air or foam from entering. Quickly pour the glue into the viscometer until it exceeds the upper scale line by 2 cm~3 cm
4.3.3.4 Insert the thermometer into the viscometer. When the temperature stabilizes at (60±0.1)C, adjust the glue level to the upper scale line. e
4.3.3.5 Press the stopwatch when your finger moves away from the end of the capillary tube. Stop the stopwatch when the glue level reaches the lower scale line. Record the time to the nearest 0.1s.
4.3.4 Calculation of results
The Blaine viscosity n of the sample is expressed in milliPascal seconds (mPas) and is calculated according to formula (2). n=I.02At-1.02B
Wherein:
Blaine viscosity of the sample, in millipascal seconds (mPas): 1.02—
Gelatin solution (12.5%) at 60°C, in grams per milliliter (g/mL): Flow time, in seconds (s):
AB—Viscometer constant, determined by calibration. The calculated result is expressed to one decimal place. 4.3.5 Precision
The absolute difference between two independent results obtained under repeatability conditions should not exceed 0.3 mPa·s. General Clothing
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4.3.6 Viscometer calibration
Perform according to 5.4.6 of GB6783-1994.
4.4 Gel strength
4.4.1 Principle
Under strictly specified conditions, when a cylinder with a diameter of 12.7 mm is pressed 4 mm below the surface of a jelly containing 12.5% gelatin, the force applied represents the gel strength, in Bloomg units. 4.4.2 Instruments
4.4.2.1 Gel strength instrument: "LFRA" tissue analyzer or domestically produced gel strength tester. 4.4.2.2 Cylinder: diameter (12.700 ± 0.013) mm. 4.4.2.3 Gel strength bottle: capacity 150 mL, inner diameter 59 mm, height 85 mm4.4.2.4 Constant temperature bath: controllable temperature is (10 ± 0.1) °C. 4.4.2.5 Water bath: controllable water bath temperature is (65 ± 1) °C. 4.4.3 Analysis steps
4.4.3.1 Prepare 120mL of industrial gelatin solution (12.5%) in a freezing bottle, cool to about 30℃, cover, and cool in a (10±0.1)℃ low temperature tank for 16h~18h.
4.4.3.2 Take the freezing bottle out of the constant temperature water tank, wipe the outside dry, remove the stopper, and quickly place it on the round table of the freezing instrument. Select 4mm for the "depth" and 0.5mm/s or 1mm/s for the "speed" of the freezing instrument to measure the freezing strength. The sample test should be completed within 2min. 4.4.4 Result expression
Read the measured freezing strength value directly from the freezing instrument, expressed in Bloomg. The result is rounded to three significant figures.
4.4.5 Precision
The absolute difference between two independent results obtained under repeatability conditions should not exceed 10Bloomg. 4.5 Ash Content
4.5.1 Principle
The inorganic matter remaining after gelatin is burned at high temperature is called ash content. Ash content is determined by burning weight method. 4.5.2 Apparatus
4.5.2.1 High temperature furnace: the temperature can be controlled within the range of (600 ± 10) ℃. 4.5.2.2 Porcelain.
4.5.2.3 Analytical balance.
4.5.2.4 Desiccator.
4.5.3 Analysis Steps
4.5.3.1 Burn to constant weight in advance.
4.5.3.2 Weigh 1g of sample, accurate to 1mg, and place in. （）EE
4.5.3.3 Place the sample in an electric furnace or a 300℃ electric heating plate and heat until the organic matter is basically burned off. The internal matter should not splash out and the overflowing gas should not be burned.
4.5.3.4 Place the sample in a (600±10)℃ high-temperature furnace and burn until the residue is completely white or light yellow ash. 4.5.3.5 Take it out, cool it for about 5 minutes, and then place it in a desiccator to cool it to room temperature and weigh it. 4.5.3.6 Repeat the operations of 4.5.3.4 and 4.5.3.5 until the difference between the two weighings is less than 2mg. 4.5.4 Calculation of results
The ash content in the sample is expressed in %, calculated according to formula (3). Xz--m-mox100
Wherein:
X, — ash content in the sample, %;
m——mass of crucible and ash, in grams (g); mo——mass of crucible, in grams (g); m——mass of crucible and sample, in grams (g). The calculated result is expressed to one decimal place. 4.5.5 Precision
QB/T1995-2005
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The absolute difference between two independent results obtained under repeatability conditions should not be greater than 0.2%. 4.6 pH
4.6.1 Principle
Limited Service
At 35℃, the pH of industrial gelatin solution (1%) is determined using a pH meter. 4.6.2 Instruments and reagents
4.6.2.1 pH meter: 0.1 scale.
4.6.2.2 Potassium dihydrogen phosphate solution (pH 6.0). 4.6.3 Analysis steps
4.6.3.1 Calibrate the pH meter with potassium dihydrogen phosphate solution (pH 6.0). 8A
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4.6.3.2 Prepare industrial gelatin solution (1%) (the water used is double distilled water), and measure the pH of the solution at 35°C with a pH meter. 4.6.4 Result expression
Read the pH of the industrial gelatin solution directly from the pH meter. mm
The result is expressed to one decimal place
4.6.5 Precision
The absolute difference between two independent results obtained under repeatability conditions should not be greater than 0.1pH. 4.7 Water-insoluble matter
4.7.1 Principle
The amount of insoluble matter is obtained by filtering the glue solution with glass. 4.7.2 Instrument
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4.7.3 Analysis steps
4.7.3.1 Dry the glass at 105℃～110℃ to constant weight (m). 4.7.3.2 Weigh (10±1)g (m) of the sample, accurate to 0.1g, pour into a beaker, add 500mL of water, place at room temperature for 2h, then dissolve in a (65±1)℃ water bath, the dissolution time shall not exceed 0.5h4.7.3.3 Filter the glue solution through the glass. 4.7.3.4 Wash the residue on the glass with hot water 3 times. 健出8
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4.7.3.5 Dry the glass in an oven at 105℃~110℃. 新市铁器合研
4.7.3.6 Take out the glass from the oven and cool it in a desiccator to room temperature. 新公制广4出S4.7.3.7 Take out the glass and weigh it.
4.7.3.8 Repeat 4.7.3.5~4.7.3.7 until constant weight (m,). 4.7.4 Calculation of results
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The content of water-insoluble matter in the sample, X, is expressed in %, and is calculated according to formula (4). X,-m-mx100
Where:
X,-the content of water-insoluble matter in the sample, %: the mass of the glass crucible and the residue, in grams (g): m2
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QB/T1995-2005
m——the mass of the glass crucible, in grams (g) m—the mass of the sample, in grams (g). The calculation result is expressed to two decimal places. 4.7.5 Precision
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4.8 Heavy Metals (measured in lead)
4.8.1 Principle
Metal ions and hydrogen sulfide test solution form colored compounds, the depth of which is proportional to the concentration of heavy metal ions, and are determined by colorimetry. 4.8.2 Reagents
4.8.2.1 Concentrated hydrochloric acid.
4.8.2.2 Concentrated nitric acid.
4.8.2.3 Acetic acid solution (6%).
4.8.2.4 Lead nitrate.
4.8.2.5 Hydrogen sulfide test solution
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Take cold steamed filling water, pass hydrogen sulfide gas into it, and make it saturated. It should be placed in a brown glass bottle and stored in a cool and dark place. Original 64.8.2.6 Lead nitrate solution
Year water test solution
Accurately weigh 0.1598g of lead nitrate dried to constant weight at 105°C, put it in a 1000mL volumetric flask, add 5mL of concentrated nitric acid and 50mL of distilled water, dissolve it, add appropriate amount of distilled water to 1000mL, shake well to obtain (1mL is equivalent to 0.1mg of lead): 4.8.2.7 Lead standard solution
Accurately measure 10mL of lead stock solution, place it in a 100mL volumetric flask, add distilled water to dilute to the mark, shake to obtain (1mL is equivalent to 10μg of lead). This solution should be prepared as needed.
4.8.3 Analysis steps
4.8.3.1 Take all the ash of 1g of the sample in 4.5, add 2mL of concentrated hydrochloric acid and 0.5mL of concentrated nitric acid, place it on a water bath and evaporate to dryness, add 5mL of water and evaporate to dryness again, add 5mL of acetic acid solution (6%) and 20mL of water, warm for several minutes, and add appropriate amount of water to 50mL. 4.8.3.2 Take two 50mL Nessler colorimetric tubes, add a certain amount of lead standard solution and 2mL of acetic acid solution (6%) to tube A, and dilute to a total of 25mL with distilled water: add 25mL of the above test solution to tube B. Then add 10mL of hydrogen sulfide test solution to tubes A and B respectively, shake well, place in the dark for 10 minutes, and place on a white porcelain plate or white paper at the same time, see through from above, and compare the colors of the two tubes. If the color of the test solution is the same as the color of the quantitative lead standard solution, the heavy metal content of the glue is obtained. 5 Inspection rules
5.1 Factory inspection
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5.1.1 Before the product leaves the factory, the quality inspection department of the manufacturer shall inspect each batch according to the provisions of this standard. Only products that pass the inspection and issue the quality inspection certificate can be sold. B
5.1.2 Factory inspection items include moisture, Blaine viscosity, freezing strength, ash content, pH, and water insoluble matter. 5.2 Type inspection
bzxZ.net5.2.1 Type inspection items include all items required by 3.2~3.3 of this standard. 5.2.2 Type inspection shall be conducted every six months during normal production. Type inspection shall also be conducted when one of the following situations occurs. a) When new products are identified and finalized:
b) When raw materials and processes are changed:
c) When the national quality supervision agency proposes a requirement for type inspection. 5.3 Sampling plan
After inspecting the outer packaging, a certain number of products with the same batch number shall be randomly selected for sampling according to the provisions of Table 2. Music and Dance
5.4 Judgment rules
QB/T1995-2005
When one of the test results does not meet the requirements of this standard, samples of twice the amount should be re-drawn from the original sampling batch for re-testing. If one of the indicators in the re-testing results is still unqualified, the batch of products shall be judged as unqualified. Table 2
Number of packages for each batch of products
51~100
101500
501~1000
6 Marking, packaging, transportation, storage
6.1 Marking
Number of samples to be sampled
Unit: piece
The product packaging should be firmly marked with the product name, manufacturer name, factory address, trademark, product model, batch number, production date, main parameters of the product, net content, and the packaging bag should have the product quality certificate and the adopted standard number. The packaging, storage and transportation icons should comply with the requirements of GB/T191.
6.2 Packaging
The product packaging is divided into two layers, the inner layer is a film bag, which should be tightly sealed, and the outer layer should be clean, dry and firm, and comply with the corresponding hygiene standards and relevant regulations.
6.3 Transportation
During transportation, the product should be transported in a clean, ventilated and covered vehicle to prevent moisture and heat, and should not be mixed with toxic substances. 6.4 Storage
The product should be stored in a dry, ventilated and clean indoor warehouse to avoid moisture. It should not be stored together with toxic and easily contaminated items. G
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Jian Yin Guo
Station Record:
Full Product Auto Daily Household Import Product Business Opportunity Gas Hai Sheng Ma In Guo Product Gas Fang Huo Guo Store Use Huan Tong He Product Theft Installation Electric Product Mei Ai a
Full Combination Solid, New Break Steal Body Letter Shoes Gas An Qi Kai Domestic, Feng Shu Guo Hua Jian Si Product Store Skin Guan
People's Republic of China
When Please Number Down Installation Energy Si Fa Shan Tool Machine Xin Printing Hand Production Certificate Ji Light Industry Industry Standard Pocket A8
Industrial Gelatin
Net Taste Media High Auction Cannot Sell Jin Si's Temporary QB/T1995-2005 Product Parent| |tt||Published and distributed by China Light Industry Press
Address: No. 6 East Chang'an Avenue, Beijing
Postal code: 100740
Issuing phone number: (010) 65241695
Website: http://chlip.com.cn/E-mail:
[email protected]Editorial address of the Editorial and Publishing Committee of Light Industry Standardization: No. 12 Guanghua Road, Chaoyang District, Beijing
Postal code: 100020
Tel: (010) 65811585
All rights reserved. Infringements will be prosecuted
Book number: 155019: 2831
Print run: 1-200 copies4 Storage
The product should be stored in a dry, ventilated, clean indoor warehouse to avoid moisture. It should not be stored together with toxic or easily contaminated items. G
18016）
G00seueTO
Ji Jin Shi Shi Fu Jing Jing Jing Price Slide Sound More Reason Blue Use Jian Zhong Batch Zhen Er Tuan Mei Jia Ben Cold No Business Have Fruit Finished Product World
Jian Yin Guo
Station Record:
Full Product Auto Daily Household Import Product Business Opportunity Gas Hai Sheng Ma In Guo Product Gas Fang Huo Guo Store Use Huan Tong He Product Theft Installation Electric Product Mei Ai a
Full Combination Solid, New Break Steal Body Letter Shoes Gas An Qi Kai Domestic, Feng Shu Guo Hua Jian Si Product Store Skin Guan
People's Republic of China
When Please Number Down Installation Energy Si Fa Shan Tool Machine Xin Printing Hand Production Certificate Ji Light Industry Industry Standard Pocket A8
Industrial Gelatin
Net Taste Media High Auction Cannot Sell Jin Si's Temporary QB/T1995-2005 Product Parent| |tt||Published and distributed by China Light Industry Press
Address: No. 6 East Chang'an Avenue, Beijing
Postal code: 100740
Issuing phone number: (010) 65241695
Website: http://chlip.com.cn/E-mail:
[email protected]Editorial address of the Editorial and Publishing Committee of Light Industry Standardization: No. 12 Guanghua Road, Chaoyang District, Beijing
Postal code: 100020
Tel: (010) 65811585
All rights reserved. Infringements will be prosecuted
Book number: 155019: 2831
Print run: 1-200 copies4 Storage
The product should be stored in a dry, ventilated, clean indoor warehouse to avoid moisture. It should not be stored together with toxic or easily contaminated items. G
18016）
G00seueTO
Ji Jin Shi Shi Fu Jing Jing Jing Price Slide Sound More Reason Blue Use Jian Zhong Batch Zhen Er Tuan Mei Jia Ben Cold No Business Have Fruit Finished Product World
Jian Yin Guo
Station Record:
Full Product Auto Daily Household Import Product Business Opportunity Gas Hai Sheng Ma In Guo Product Gas Fang Huo Guo Store Use Huan Tong He Product Theft Installation Electric Product Mei Ai a
Full Combination Solid, New Break Steal Body Letter Shoes Gas An Qi Kai Domestic, Feng Shu Guo Hua Jian Si Product Store Skin Guan
People's Republic of China
When Please Number Down Installation Energy Si Fa Shan Tool Machine Xin Printing Hand Production Certificate Ji Light Industry Industry Standard Pocket A8
Industrial Gelatin
Net Taste Media High Auction Cannot Sell Jin Si's Temporary QB/T1995-2005 Product Parent| |tt||Published and distributed by China Light Industry Press
Address: No. 6 East Chang'an Avenue, Beijing
Postal code: 100740
Issuing phone number: (010) 65241695
Website: http://chlip.com.cn/E-mail:
[email protected]Editorial address of the Editorial and Publishing Committee of Light Industry Standardization: No. 12 Guanghua Road, Chaoyang District, Beijing
Postal code: 100020
Tel: (010) 65811585
All rights reserved. Infringements will be prosecuted
Book number: 155019: 2831
Print run: 1-200 copies
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