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GB/T 29405-2012: Inspection of grain and oils -- Determination of fat acidity of cereal and cereal products -- Instrumental analysis method
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Inspection of grain and oils -- Determination of fat acidity of cereal and cereal products -- Instrumental analysis method
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GB/T 29405-2012
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Basic data | Standard ID | GB/T 29405-2012 (GB/T29405-2012) | | Description (Translated English) | Inspection of grain and oils -- Determination of fat acidity of cereal and cereal products -- Instrumental analysis method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X11 | | Classification of International Standard | 67.060 | | Word Count Estimation | 13,115 | | Quoted Standard | GB/T 601; GB 5491; GB/T 5497; GB/T 6682-2008 | | Regulation (derived from) | National Standards Bulletin 2012 No. 42 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the photometric titration method and intelligent potentiometric titration method for the determination of fatty acid value cereals and products of terms and definitions, principles, reagents and materials, instruments and equipment | GB/T 29405-2012: Inspection of grain and oils -- Determination of fat acidity of cereal and cereal products -- Instrumental analysis method
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Inspection of grain and oils. Determination of fat acidity of cereal and cereal products. Instrumental analysis method
ICS 67.060
X11
National Standards of People's Republic of China
Inspection of grain and grain products, fatty acid value determination
Instruments Law
Issued on. 2012-12-31
2013-06-20 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
Some elements of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents.
The standard proposed by the National Food Authority.
This standard by the National Grain and Oil Standardization Technical Committee (SAC/TC270) centralized.
The standard photometric titration method drafting unit. China Grain Reserves Corporation Chengdu Grain Storage Research Institute, China Grain Reserve Management
head office.
The standard photometric titration method was mainly drafted by. Ho Chao, high Rosa, Wang Xibo, Shi Heng, Dongde Liang, Xiao Xuebin, Yang Jun, Maogen Wu, Guo
Dowling, Yang Jian, Lan Sheng Bin, Ding Jianwu, Zhang Huachang.
This standard intelligent titrator law drafting unit. Beijing foodstuff inspection, Beijing Feng Wei pioneer technology development company.
This standard intelligent titrator main drafters of the law. Zhou Guangjun, Fan Fei, Wang Caiqin, Xia Jian, Guo Qin, Liu Zhigang, Wang Haibin,
Zhang Mingzheng, Yoon Sang Long.
Inspection of grain and grain products, fatty acid value determination
Instruments Law
1 Scope
This standard specifies the determination of fatty acid value of cereal products and photometric titration method and intelligent titrator law terminology and definitions, principles, again
Agents and materials, equipment and facilities, the steps, the results of calculation and representation.
The standard photometric titration method is suitable for rice, brown rice, rice determination of fatty acid value, intelligent titrator law applies to corn, rice
Valley, brown rice, rice, wheat flour measured fatty acid values.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Preparation of GB/T 601 chemical reagent standard titration solution
GB 5491 grain and oilseeds testing for sampling, and sample method
GB/T 5497 grain and oilseeds - Determination of water test
Laboratory use specifications and test methods GB/T 6682-2008 Analysis
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Fatty acid value fatacidity
Sample content of free fatty acids. The number of milligrams to neutralize the free fatty acids in 100g dry sample potassium hydroxide required representation
That is counted in units of dry KOH mg/100g.
4 photometric titration method
4.1 Principle
Under certain conditions of temperature, with anhydrous ethanol extract a sample of free fatty acids to make thyme Fen blue indicator solution indicator hydroxide
Potassium standard solution titration. Using an optical sensor to detect light energy changes through titration system solution, automatically determine the titration end point, read the manual
Automatically record the number or volume of extract consumption of standard solution of potassium hydroxide. Meanwhile, the microprocessor system, using the built-in pattern recognition system
To control the process and the titration process titration results.
4.2 Reagents and materials
Unless otherwise specified, all reagents were of analytical grade, test water should be consistent with GB/T 6682-2008 in three water specifications.
4.2.1 ethanol.
4.2.2 95% ethanol.
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