LST6105-2012 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
LS/T 6105-2012	139	Add to Cart	3 days	Inspection of grain and oils. Determination of fat acidity value of ceral and products. Method of automatic titration analyzer	Valid

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Basic data

Detail Information of LS/T 6105-2012; LS/T6105-2012
Description (Translated English): Inspection of grain and oils. Determination of fat acidity value of ceral and products. Method of automatic titration analyzer
Sector / Industry: Food & Beverage Industry Standard (Recommended)
Classification of Chinese Standard: X11
Classification of International Standard: 67.060
Word Count Estimation: 5,518
Date of Issue: 2012-10-25
Date of Implementation: 2012-12-01
Quoted Standard: GB/T 5490-2010; GB/T 5491-1985; GB 5497; GB/T 6682; GB/T 20569; GB/T 20570; LS/T 3706
Drafting Organization: China Grain Reserve Management Corporation Chengdu Grain Storage Science Research Institute
Administrative Organization: National Food Bureau Standard Quality Center
Regulation (derived from): State-Food-Communication (2012) No.2
Proposing organization: National Food Bureau Standard Quality Center
Issuing agency(ies): National Grain Bureau
Summary: This standard specifies the principles, reagents and materials, instruments and apparatus, samples, analytical procedures, calculation and representation of results and precision of the determination of fatty acid values ??in cereals and products by the automatic titration analyzer method. This standard applies to the determination of fatty acid values ??in rice, brown rice, rice, corn and products.

LST6105-2012: Inspection of grain and oils. Determination of fat acidity value of ceral and products. Method of automatic titration analyzer

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Inspection of grain and oils.Determination of fat acidity value of ceral and products. Method of automatic titration analyzer ICS 67.060 X11 People's Republic of China food industry standard Grain and oil testing - Determination of fatty acids in cereals and products Automatic titration analyzer Released on.2012-10-25 2012-12-01 implementation National Food Bureau released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the Standard Quality Center of the National Grain Administration. This standard was drafted. Chengdu Grain Storage Science Research Institute of China Grain Reserve Management Corporation. The main drafters of this standard. Shi Heng, Yue Lu, Zhang Huachang, Dong Deliang, Mao Genwu, Wang Ke, Guo Daolin, Ding Jianwu, He Xuechao. Grain and oil testing - Determination of fatty acids in cereals and products Automatic titration analyzer

1 Scope

This standard specifies the principles, reagents and materials, instruments and utensils, samples, and materials for determining the fatty acid value of grains and products by the automatic titration analyzer method. Analysis steps, results calculations and representations and precision. This standard applies to the determination of fatty acid values in rice, brown rice, rice, corn and products.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 5490-2010 General rules for grain and oil inspection GB 5491 Inspection of grain and oil materials, sample method GB 5497 Determination of moisture content of grain and oil materials GB/T 6682 Analytical laboratory water specifications and test methods GB/T 20569 Rice storage quality judgment rules GB/T 20570 corn storage quality determination rules LS/T 3706 Grain and Oil Inspection Instrument Automatic Titration Analyzer Technical Conditions and Test Methods

3 Principle

Extract free fatty acids in grains or products with absolute ethanol under certain temperature conditions (15 ° C ~ 25 ° C), add in the extract The phenolphthalein solution indicator is titrated to a reddish color by an automatic titration analyzer (hereinafter referred to as a titrator) with a potassium hydroxide standard titration solution, according to The fatty acid value of the sample is automatically calculated from the volume of the potassium hydroxide standard titration solution consumed.

4 reagents and materials

Unless otherwise specified, all reagents are of analytical grade, and the experimental water should meet the specifications of the third grade water in GB/T 6682. 4.1 Anhydrous ethanol. 4.2 95% ethanol. 4.3 Distilled water without carbon dioxide. Boil distilled water for about 10 minutes, cover and cool. 4.4 Phenolphthalein indicator. Weigh 1.0 g of phenolphthalein in 100 mL of 95% (by volume) ethanol (4.2). 4.5 Potassium hydroxide standard stock solution. c (KOH) = 0.5 mol/L. Prepared and calibrated according to GB/T 20569 or GB/T 20570 In polyethylene plastic bottles. 4.6 Potassium hydroxide standard titration solution. c (KOH) = 0.01 mol/L. Prepared according to GB/T 20569 or GB/T 20570, stored in poly In a vinyl plastic bottle. ......

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