GB/T 5917-1986
Replaced
GB/T 15400-2018
Active
National standards
GB/T 15400-2018 Determination of tryptophan in feeds
GB/T 15400-2018 Determination of tryptophan in feeds
Basic Information
Standard Code:
GB/T 15400-2018
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Animal and poultry feed and additives
ICS Name:
\nFeeds
Publish Date:
2018-09-17
Implement Date:
2019-04-01
Pages:
9 pages
Scope
This standard specifies the high-performance liquid chromatography and spectrophotometry methods for determining the tryptophan content in feed. This standard is applicable to the determination of tryptophan in feed raw materials, compound feed, concentrated feed, and supplementary feed. The quantitative limit of high-performance liquid chromatography is 0.02%; when the maximum sample weighing amount is 700 mg and the dilution factor of the hydrolysis solution is 25 times, the quantitative limit of spectrophotometry is 0.04%.
Development Information
Replace the following standards
Referenced Standards
GB/T 6433-1994 Method for the determination of crude fat in feedstuffs
GB/T 6433-2006 Determination of crude fat in feeds
GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods
GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods
GB/T 14699.1-1993 Methods for sampling of feed
GB/T 14699.1-2005 Feeding stuffs—Sampling
GB/T 20195-2006 Animal feeding stuffs—Preparation of test samples
GB/T 20195-2024 Animal feed—Preparation of test samples
GB/T 6433-2025 Determination of crude fat in feeds
Related Standards
GB/T 6435-1986
Replaced
GB/T 6435-1986 Method for the determination of moisture in feedstuffs
GB 7294-1987
Replaced
GB 7294-1987 Feed additive—Vitamin K3 (menadione sodium bisulfite)
GB 7298-1987
Replaced
GB 7298-1987 Feed additive—Vitamin B6
GB 7299-1987
Replaced
GB 7299-1987 Feed additive—Dextro calcium pantothenate
GB 7300-1987
Replaced