GB/T 5511-2008
Cereals and pulses.Determination of the nitrogen content and calculation of the crude protein content.Kjeldahl method (English Version)

Standard No.

GB/T 5511-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2017-06

Replace By

GB 5009.5-2016

Latest

GB 5009.5-2016

Replace

GB/T 5511-1985

Scope

WARNING: Use of this standard may involve hazardous substances, procedures and equipment. The intent of this standard is not to state all safety issues related to the use of this standard. Before using this standard, users of this standard should establish appropriate safety measures and specify application limitations. This standard specifies the determination method of nitrogen content in grains, beans and derivative products by Kjeldahl method and the calculation method of crude protein content. This method cannot distinguish between protein nitrogen and non-protein nitrogen. If the determination of non-protein nitrogen content is important, other suitable methods can be used.

GB/T 5511-2008 Referenced Document

• GB/T 10362 Inspection of grain and oils.Determination of moisture content of maize*， 2008-11-04 Update
• GB/T 21305 Cereals and cereal products.Determination of moisture content.Routine reference method

GB/T 5511-2008 history

• 2016 GB 5009.5-2016 National food safety standard Determination of protein in food
• 2008 GB/T 5511-2008 Cereals and pulses.Determination of the nitrogen content and calculation of the crude protein content.Kjeldahl method
• 1985 GB/T 5511-1985 Inspection of grain and oilseeds--Methods for determination of crude protein

GB/T 5511-2008 Cereals and pulses.Determination of the nitrogen content and calculation of the crude protein content.Kjeldahl method was changed to GB 5009.5-2016 National food safety standard Determination of protein in food.