Disadvantages of measuring protein content by nitrogen determination method

Disadvantages of measuring protein content by nitrogen determination method, Total:171 items.

The international standard classification for "Disadvantages of measuring protein content by nitrogen determination method" includes: food products in general , Milk and milk products in general , Cereals, pulses and derived products , Fruits. Vegetables , Animal feeding stuffs , Meat and meat products .

The Chinese standard classification for "Disadvantages of measuring protein content by nitrogen determination method" includes: Food processing and products in general , Food sanitation , Cereal crop and forage crop in general , Other cash crops , Livestock and poultry feed and additive , Meat processing and products .

未注明发布机构

DIN EN ISO 20483 E:2012-07 Determination of nitrogen content and calculation of crude protein content in cereals and legumes Kjeldahl method (draft)
DIN EN ISO 8968-4 E:2013-09 Determination of nitrogen content of milk and milk products Part 4: Determination of protein and non-protein nitrogen content and calculation of pure protein content (Reference Method) (Draft)

Professional Standard - Agriculture

2330药典二部-2010 Appendix VII M Determination of protein content
111药典四部-2015 0700 Other Determination Methods 0731 Determination of Protein Content
220药典三部-2020 Content Determination Method 0731 Protein Content Determination Method
201药典三部-2015 Content Determination Method 0731 General Principles of Protein Content Determination Method 50
92药典四部-2020 0700 Other Determination Methods 0731 Determination of Protein Content

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

GB/T 24899-2010 Inspection of grain and oils—Determination of crude protein in wheat—Near-infrared method
GB/T 24318-2009 Determination of total nitrogen content in animal feeding stuffs by combustion according to the Dumas principle and calculation of the crude protein content
GB/T 24901-2010 Inspection of grain and oils—Determination of crude protein in maize—Near-infrared method
GB/T 24897-2010 Inspection of grain and oils—Crude protein determination in rice—Near-infrared method
GB/T 24871-2010 Inspection of grain and oils—Crude protein determination in wheat flour—Near-infrared method
GB/T 5511-2008 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
GB/T 21704-2008 Determination of non-protein-nitrogen content in milk and dairy products
GB/T 15673-1995 Method for determination of crude protein in edible fungi

Taiwan Provincial Standard of the People's Republic of China

CNS 6511-2008 Method of test for meat and meat products - Determination of crude protein content

国家市场监督管理总局、中国国家标准化管理委员会

GB/T 41366-2022 Livestock and poultry meat quality testing—Determination of moisture,protein and fat—Near-infrared spectroscopy method

Professional Standard - Commodity Inspection

SN/T 3382-2012 Determination of non-protein-nitrogen content in milk and dairy products for export

International Organization for Standardization (ISO)

ISO 8968-4:2016 | IDF 20-4:2016 Milk and milk products — Determination of nitrogen content — Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
ISO 8968-4:2016 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
ISO 8968-5:2001|IDF 20-5:2001 Determination of milk nitrogen content Part 5: Determination of protein nitrogen content
ISO 8968-5:2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
ISO 8968-5:2001 | IDF 20-5:2001 Milk — Determination of nitrogen content — Part 5: Determination of protein-nitrogen content
ISO 8968-4:2001 Milk - Determination of nitrogen content - Part 4: Determination of non-protein-nitrogen content
ISO 8968-4:2001|IDF 20-4:2001 Determination of milk nitrogen content Part 4: Determination of non-protein nitrogen content
ISO 8968-4:2001 | IDF 20-4:2001 Milk — Determination of nitrogen content — Part 4: Determination of non-protein-nitrogen content
ISO 5983:1979 Animal feeding stuffs; Determination of nitrogen content and calculation of crude protein content
ISO 5549:1978 Caseins and caseinates; Determination of protein content (Reference method)
ISO 8968-4:2001/Cor 1:2011 Milk - Determination of nitrogen content - Part 4: Determination of non-protein-nitrogen content; Technical Corrigendum 1
ISO 20483:2013 Cereals and pulses.Determination of the nitrogen content and calculation of the crude protein content.Kjeldahl method
ISO 5983:1997 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method
ISO 17997-2:2004 | IDF 29-2:2004 Milk — Determination of casein-nitrogen content — Part 2: Direct method
ISO 17997-2:2004|IDF 029-2:2004 Bovine Casein - Determination of Nitrogen Content Part 2: Direct Method
ISO 17997-2:2004 Milk - Determination of casein-nitrogen content - Part 2: Direct method
ISO 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
ISO/TS 17837:2008 | IDF/RM 25: 2008 Processed cheese products — Determination of nitrogen content and crude protein calculation — Kjeldahl method
ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
ISO 17997-1:2004|IDF 029-1:2004 Bovine casein - Determination of nitrogen content Part 1: Indirect method (reference method)
ISO 17997-1:2004 Milk - Determination of casein-nitrogen content - Part 1: Indirect method (Reference method)
ISO 17997-1:2004 | IDF 29-1:2004 Milk — Determination of casein-nitrogen content — Part 1: Indirect method (Reference method)

British Standards Institution (BSI)

BS EN ISO 8968-4:2016 Milk and milk products. Determination of nitrogen content. Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
BS EN ISO 8968-5:2002 Milk. Determination of nitrogen content. Determination of protein-nitrogen content
BS EN ISO 8968-4:2002 Milk. Determination of nitrogen content. Determination of non-protein nitrogen content
BS EN ISO 8968-4:2016(2017) Milk and milk products — Determination of nitrogen content Part 4 : Determination of protein and non - protein nitrogen content and true protein content calculation (Reference method)
BS ISO 17997-2:2005 Milk - Determination of casein-nitrogen content - Direct method
BS ISO 17997-2:2004 Milk. Determination of casein-nitrogen content - Direct method
BS EN ISO 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
BS ISO 17997-1:2004 Milk. Determination of casein-nitrogen content - Indirect method (Reference method)
BS EN ISO 20483:2013 Cereals and pulses. Determination of the nitrogen content and calculation of the crude protein content. Kjeldahl method
BS ISO 17997-1:2005 Milk - Determination of casein-nitrogen content - Indirect method (Reference method)
DD ISO/TS 17837:2008 Milk and milk products. Determination of nitrogen content and crude protein calculation. Kjeldahl method
BS EN ISO 5983-1:2005(2009) Animal feeding stuffs — Determination of nitrogen content and calculation of crude protein content — Part 1 : Kjeldahl method

GSO

BH GSO ISO 8968-4:2022 Milk and milk products — Determination of nitrogen content — Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
GSO ISO 8968-4:2021 Milk and milk products — Determination of nitrogen content — Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
GSO ISO 8968-5:2014 Milk -- Determination of nitrogen content -- Part 5: Determination of protein-nitrogen content
OS GSO ISO 8968-5:2014 Milk -- Determination of nitrogen content -- Part 5: Determination of protein-nitrogen content
GSO ISO 20483:2013 Cereals and pulses -- Determination of the nitrogen content and calculation of the crude protein content -- Kjeldahl method
OS GSO ISO 20483:2013 Cereals and pulses -- Determination of the nitrogen content and calculation of the crude protein content -- Kjeldahl method
OS GSO ISO 5983-1:2007 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
OS GSO ISO 5983:2002 ANIMAL FEEDING STUFFS – DETERMINATION OF NITROGEN CONTENT AND CALCULATION OF CRUDE PROTEIN CONTENT
GSO ISO 5983-1:2007 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
GSO ISO 17997-2:2014 Milk -- Determination of casein-nitrogen content -- Part 2: Direct method
OS GSO ISO 17997-2:2014 Milk -- Determination of casein-nitrogen content -- Part 2: Direct method
BH GSO ISO 17997-2:2016 Milk -- Determination of casein-nitrogen content -- Part 2: Direct method
GSO ISO 17997-1:2014 Milk -- Determination of casein-nitrogen content -- Part 1: Indirect method (Reference method)
OS GSO ISO 17997-1:2014 Milk -- Determination of casein-nitrogen content -- Part 1: Indirect method (Reference method)

Standard Association of Australia （SAA）

AS ISO 8968.4:2021 Milk and milk products — Determination of nitrogen content, Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)

Association Francaise de Normalisation

NF EN ISO 8968-4:2016 Milk and dairy products - Determination of nitrogen content - Part 4: determination of protein and non-protein nitrogen content and calculation of true protein content (Reference method)
NF V04-221-4*NF EN ISO 8968-4:2016 Milk and milk products - Determination of nitrogen content - Part 4 : determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
NF V04-221-5:2002 Milk - Determination of nitrogen content - Part 5 : determination of protein-nitrogen content.
NF V04-221-4:2002 Milk - Determination of nitrogen content - Part 4 : determination of non-protein nitrogen content.
NF V03-750:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method.
NF V03-750:1999 Cereals and pulses. Determination of the nitrogen content and calculation of the raw protein content. Kjeldahl method.
NF V18-100:1977 Animal feeding stuffs.determination of nitrogen for the calcultion of crude protein content.
NF EN ISO 20483:2014 Cereals and legumes - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method
NF V03-750*NF EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
NF V04-387:1985 Caseins and caseinates. Determination of protein content (reference method).
NF V18-100-2*NF EN ISO 5983-2:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2 : block digestion and steam distillation method.
NF EN ISO 5983-1:2005 Animal feed - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
NF V04-407:2002 Meat, meat product and fishery products - Determination of nitrogen content and calculation of the protein content - Kjeldahl method.
NF EN ISO 8968-1:2014 Milk and dairy products - Determination of nitrogen content - Part 1: Kjeldahl method and calculation of crude protein content

ES-UNE

UNE-EN ISO 8968-4:2016 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method) (ISO 8968-4:2016)
UNE-EN ISO 5983-1:2007/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005/Cor 1:2008)

German Institute for Standardization

DIN EN ISO 8968-4:2016-09 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method) (ISO 8968-4:2016); German version EN ISO 8968-4:2016
DIN EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001); German version EN ISO 8968-5:2001
DIN EN ISO 8968-4:2002 Milk - Determination of nitrogen content - Part 4: Determination of the non-protein-nitrogen content (ISO 8968-4:2001); German version EN ISO 8968-4:2001
DIN EN ISO 8968-4:2016 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method) (ISO 8968-4:2016); German version EN ISO 8968-4:2016
DIN EN ISO 20483:2014-03 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2013); German version EN ISO 20483:2013
DIN 10470:2011 Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
DIN EN ISO 5983-1 Berichtigung 1:2009-07 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005); German version EN ISO 5983-1:2005, Corrigendum to DIN EN ISO 5983-1:2005-10; German version EN ISO 5983-1:20...
DIN EN ISO 5983-1:2005-10 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method (ISO 5983-1:2005); German version EN ISO 5983-1:2005
DIN EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2006); German version EN ISO 20483:2006
DIN 10464:1994-08 Determination of casein content, casein and whey protein contents in total protein of milk and milk products - Casein-phosphorus method
DIN 10464:1994 Determination of casein content, casein and whey protein contents in total protein of milk and milk products - Casein-phosphorus method
DIN 10470:1999 Determination of whey protein content and casein content in total protein of milk and milk products - Derivative spectroscopic method
DIN 10466:2001 Determination of whey protein content in total protein of milk and milk products - Polarographic method

SCC

DANSK DS/EN ISO 8968-4:2016 Milk and milk products – Determination of nitrogen content – Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
NS-EN ISO 8968-4:2016 Milk and milk products — Determination of nitrogen content — Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method) (ISO 8968-4:2016)
AENOR UNE-EN ISO 8968-4:2016 Milk and dairy products. Determination of nitrogen content. Part 4: Determination of protein and non-protein nitrogen content and calculation of true protein content (Reference method). (ISO 8968-4:2016)
DIN EN ISO 8968-4 E:2013 Draft Document - Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non protein nitrogen content and true protein content calculation (Reference method) (ISO/DIS 8968-4:2013); German version prEN ISO 8968-...
AENOR UNE-EN ISO 8968-5:2002 Milk. Determination of nitrogen content. Part 5: Determination of protein nitrogen content. (ISO 8968-5:2001)
NS-EN ISO 8968-5:2001 Milk — Determination of nitrogen content — Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)
UNE-EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content. (ISO 8968-5:2001)
UNE-EN ISO 8968-4:2002 Milk - Determination of nitrogen content - Part 4: Determination of non-protein nitrogen content. (ISO 8968-4:2001)
NS-EN ISO 8968-4:2001 Milk — Determination of nitrogen content — Part 4: Determination of non-protein nitrogen content (ISO 8968-4:2001)
DANSK DS/EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
AS 1871.9:1976 List of methods for examination of waters Nitrogen (albuminoid)
UNE-EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2006)
DANSK DS/EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
NS-EN ISO 20483:2013 Cereals and pulses — Determination of the nitrogen content and calculation of the crude protein content — Kjeldahl method (ISO 20483:2013)
BS DD ISO/TS 17837:2008 Milk and milk products. Determination of nitrogen content and crude protein calculation. Kjeldahl method
NS-EN ISO 20483:2006 Cereals and pulses — Determination of the nitrogen content and calculation of the crude protein content — Kjeldahl method (ISO 20483:2006)
DANSK DS/ISO 17997-2:2004 Milk - Determination of casein-nitrogen content - Part 2: Direct method
12/30251275 DC BS EN ISO 20483. Cereals and pulses. Determination of the nitrogen content and calculation of the crude protein content. Kjeldahl method
BS 5766-4:1981 Methods for analysis of animal feeding stuffs-Determination of nitrogen content and calculation of crude protein content
BS 5766-4:1998 Methods for analysis of animal feeding stuffs-Determination of nitrogen content and calculation of crude protein content
DIN EN ISO 20483 E:2012 Draft Document - Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO/DIS 20483:2012); German version prEN ISO 20483:2012
DANSK DS/ISO 17997-1:2004 Milk - Determination of casein-nitrogen content - Part 1: Indirect method (Reference method)

CEN - European Committee for Standardization

EN ISO 8968-4:2001 Milk - Determination of Nitrogen Content - Part 4: Determination of Non-Protein Nitrogen Content
EN ISO 5983-2:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion/steam distillation method

Danish Standards Foundation

DS/EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
DS/EN ISO 8968-4:2002 Milk - Determination of nitrogen content - Part 4: Determination of non-protein nitrogen content
DS/EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
DS/EN ISO 5983-1/AC:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
DS/EN ISO 5983-1:2005 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 1: Kjeldahl method
DS/ISO 17997-2:2004 Milk - Determination of casein-nitrogen content - Part 2: Direct method
DS/ISO 17997-1:2004 Milk - Determination of casein-nitrogen content - Part 1: Indirect method (Reference method)

ZA-SANS

SANS 8968-5:2006 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
SANS 8968-4:2006 Milk - Determination of nitrogen content Part 4: Determination of non-protein-nitrogen content

International Dairy Federation (IDF)

IDF 20-5-2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content
IDF 20-4-2001 Milk - Determination of nitrogen content - Part 4: Determination of non-protein-nitrogen content
IDF/RM 25-2008 Milk and milk products - Determination of nitrogen content and crude protein calculation - Kjeldahl method

GOSTR

GOST 34454-2018 Dairy products. Determination of protein content by the Kjeldahl method

VN-TCVN

TCVN 3705-1990 Aquatic products.Method for the determination of total nitrogen and protein content
TCVN 7253-2003 Tobacco and tobacco products.Determination of nitrogen protein content
TCVN 4328-1-2007 Animal feeding stuffs.Determination of nitrogen content and calculation of crude protein content.Part 1: Kjeldahl method

European Committee for Standardization (CEN)

EN ISO 8968-4:2016 Milk and milk products - Determination of nitrogen content - Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
EN ISO 8968-5:2001 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)
EN ISO 20483:2013 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
EN ISO 5983-2:2009 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion and steam distillation method
EN ISO 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method

Lithuanian Standards Office

LST EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Part 5: Determination of protein-nitrogen content (ISO 8968-5:2001)
LST EN ISO 8968-4:2002 Milk - Determination of nitrogen content - Part 4: Determination of non-protein nitrogen content (ISO 8968-4:2001)
LST ISO 5549:2001 Caseins and caseinates. Determination of protein content (Reference method) (identical ISO 5549:1978)
LST EN ISO 20483:2007 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2006)

KR-KS

KS H ISO 5549-2021 Caseins and caseinates — Determination of protein content(Reference method)
KS H 1204-2022 Testing method for crude proteins content

TH-TISI

TIS 2255.1-2005 Animal feeding stuff s-determination of nitrogen content and calculation of crude protein content.part 1: kjeldahl method

Korean Agency for Technology and Standards (KATS)

KS H ISO 5549-2006(2016) Caseins and caseinates－Determination of protein content(Reference method)
KS H ISO 5549:2006 Caseins and caseinates－Determination of protein content(Reference method)
KS H ISO 5549:2021 Caseins and caseinates — Determination of protein content(Reference method)
KS H 1204-2012 Testing method for crude proteins content
KS H 1204-2001 Testing method for crude proteins content
KS H 1204-2021 Testing method for crude proteins content

RU-GOST R

GOST 23327-1998 Milk and milk products. Determination of mass part of total nitrogen by Kjeldahl method and determination of mass part of protein
GOST 23327-1978 Milk. Methods for determination of the total protein content
GOST 10846-1991 Grain and products of its processing. Method for determination of protein
GOST R 55246-2012 Milk and milk products. Determination of non-protein nitrogen content by Kjeldahl method
GOST R 51470-1999 Caseins and caseinates. Method for determination of protein content

NL-NEN

NEN 3760-1984 Cheese - Determination of the nitrogen content according to Kjeldahl - Calculation of the crude protein content

BG-BDS

BGC ISO 5983:2001 Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Kjeldahl method

AT-ON

ONORM DIN 10334-1994 Determination of nitrogen content of milk according to Kjeldahl and calculation of crude protein content
ONORM DIN 10454-1993 Determination of protein content of caseins and caseinates - Reference method

PT-IPQ

NP 1986-1991 Milks Determination of protein content. Kjeldahl technique
NP 1996-2000 Cereals and pulses Determiantion of the nitrogen content and calculation of the raw protein content Kjeldhal method

RO-ASRO

STAS 2213/17-1976 SWEETS Determination of total proteinic content and milk proteinic substance content
STAS 21/6-1973 OILSEED RESIDUES Determination of protein of protein brut content
STAS SR 13325-1995 Animal feeding stuffs - Determination of total nitrogen content and calculation of crude protein content

CZ-CSN

CSN 57 0111-5-2002 Testing methods for casein and caseinates - Determination of protein content
CSN 570111-5-2002 Testing methods for casein and caseinates - Determination of protein content

AENOR

UNE-EN ISO 20483:2014 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method (ISO 20483:2013)

Others: