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GB/T 20194-2018 English PDF

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Q: Should I purchase the latest version GB/T 20194-2018?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20194-2018 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$239.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 20194-2018: Determination of starch in feeds -- Polarimetry
Status: Valid

GB/T 20194: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20194-2018	239	Add to Cart	3 days	Determination of starch in feeds -- Polarimetry	Valid
GB/T 20194-2006	394	Add to Cart	3 days	Animal feeding stuffs -- Determination of starch content -- Polarimetric method	Obsolete

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Basic data

Standard ID: GB/T 20194-2018 (GB/T20194-2018)
Description (Translated English): Determination of starch in feeds -- Polarimetry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B46
Classification of International Standard: 65.120
Word Count Estimation: 12,131
Date of Issue: 2018-05-14
Date of Implementation: 2018-12-01
Older Standard (superseded by this standard): GB/T 20194-2006
Quoted Standard: GB/T 601; GB/T 6003.1; GB/T 6682; GB/T 14699.1; GB/T 20195
Adopted Standard: ISO 6493-2000, MOD
Regulation (derived from): National Standards Announcement No. 6 of 2018
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies the optical rotation method for the determination of starch content in animal feed. This standard applies to the determination of starch content in feed ingredients, compound feeds, concentrate supplements, concentrate feeds, and additive premixes. This standard does not apply to products containing substances other than starch that are optically active during the analysis and are insoluble in 40% ethanol, such as potato pulp, beet silk, leaves, roots, crowns, yeast, soy products, lupine As well as glucose-rich products (such as chrysanthemum and Jerusalem artichoke), the amount of starch can be determined enzymatically. This standard does not apply to the quantitative determination of starch with amylose exceeding 40%, such as high amylose corn starch HylonVII.

GB/T 20194-2018: Determination of starch in feeds -- Polarimetry

---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.
Determination of starch in feeds.Polarimetry ICS 65.120 B46 National Standards of People's Republic of China Replace GB/T 20194-2006 Determination of starch content in animal feeds - Optical method (ISO 6493.2000, Animalfeedingstuffs- Determinationofstarchcontent-Polarimetricmethod, MOD) Published on.2018-05-14 2018-12-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 20194-2006 "Determination of Starch Content in Feeds by Rotation". Compared with GB/T 20194-2006, the main technical contents of this standard are as follows. --- The consistency relationship between this standard and ISO 6493.2000 is adjusted to be modified; --- "Scope" added "This standard applies to feed ingredients, compound feed, concentrate feed, concentrate feed and additive premix Determination of medium starch content" (see Chapter 1, Chapter 1 of the.2006 edition); --- Added "GB/T 601" to the "normative reference document" (see Chapter 2, Chapter 2 of the.2006 edition); --- Amend zinc acetate trihydrate to zinc acetate dihydrate (see 5.6.2, 5.6.2 of.2006 edition); --- Clarified hydrochloric acid to be calibrated (see 5.3 and 5.4,.2006 editions 5.4 and 5.5); --- Fixed the calculation formula (see Chapter 9, Chapter 10 of the.2006 edition); --- Increased the specific rotation of barley (see Chapter 9). This standard uses the redrafting method to modify the use of ISO 6493.2000 "measurement of the amylose content of animal feed". This standard is structurally modified compared to ISO 6493.2000. Chapters of this standard and ISO 6493.2000 are listed in Appendix A. The bar number comparison list. There are technical differences between this standard and ISO 6493.2000. Appendix B gives the corresponding technical differences and their causes. Watch list. This standard is proposed and managed by the National Feed Industry Standardization Technical Committee (SAC/TC76). This standard was drafted. Guoliang Wuhan Scientific Research and Design Institute Co., Ltd. [National Feed Quality Supervision and Inspection Center (Wuhan)]. The main drafters of this standard. Huang Ting, Wang Sisi, Gao Junfeng, He Xukong, Wang Jun, Yang Lin. The previous versions of the standards replaced by this standard are. ---GB/T 20194-2006. Determination of starch content in animal feeds - Optical method

1 Scope

This standard specifies the optical rotation method for the determination of starch content in animal feed. This standard applies to the determination of starch content in feed ingredients, compound feeds, concentrate feeds, concentrate feeds and additive premixes. This standard does not apply to products containing substances other than starch that are optically active during the analysis and are insoluble in 40% ethanol. Products such as potato pulp, silk, leaves, roots, crowns of yeast, yeast, soy products, lupins and products rich in glucose (such as chicory roots and chrysanthemums) 芋), at this time, the starch content can be determined by an enzymatic method. This standard does not apply to the quantitative determination of starch with more than 40% amylose, such as high linear corn starch HylonVII. Caution - When the product is treated, the temperature and humidity are too high, and the starch measurement may be too low.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. Preparation of standard solution by GB/T 601 chemical reagent titration analysis (capacity analysis) GB/T 6003.1 wire woven mesh test sieve (GB/T 6003.1-2012, ISO 3310-1..1990, IDT) GB/T 6682 Analytical laboratory water specifications and test methods (GB/T 6682-2008, ISO 3696.1987, IDT) GB/T 14699.1 Feed sampling (GB/T 14699.1-2005, ISO 6497.2002, IDT) Preparation of GB/T 20195 animal feed samples (GB/T 20195-2006, ISO 6498.1998, IDT)

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Starch starch A branched long chain (amylose) of a glucose unit linked by an α-1,4 bond and/or an α-1,6 of a glucose unit linked by an α-1,4 bond A natural plant-derived polymer composed of long chain branches (amylopectin). 3.2 Starch content starch content The mass fraction of starch and its polymer degradation products insoluble in 40% ethanol determined according to this standard. Note. Starch content is expressed in grams per kilogram.

4 Principle

The sample was decomposed with dilute hydrochloric acid to gelatinize and partially hydrolyze the dissolved starch. Determine the total optical rotation of the clear solution and dissolve it in 40% B The other substances of the alcohol and the optical rotation caused by the dilute hydrochloric acid treatment were corrected. Multiply the corrected polarimeter with a known coefficient Calculated starch content. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 20194-2018_English be delivered?

Answer: Upon your order, we will start to translate GB/T 20194-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 20194-2018_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 20194-2018_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 20194-2018?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20194-2018 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.