How to measure protein content in food

How to measure protein content in food, Total:120 items.

The international standard classification for "How to measure protein content in food" includes: food products in general , Fruits. Vegetables , Vegetables and derived products , Textiles in general , Milk and processed milk products , Milk and milk products in general , Man-made fibres .

The Chinese standard classification for "How to measure protein content in food" includes: Food sanitation , Basic standards and general methods , Other cash crops , Vegetable processing and products , Silk and silk fabric in general , Basic standard and general method on forestry , Children foods , Chemical fibre in general .

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

GB/T 14771-1993 Method for determination of protein content in foods
GB/T 15673-2009 Determination of crude protein in edible mushroom
GB/T 44214-2024 Test method for non-protein content in silk
GB/T 5009.5-2003 Determination of protein in foods
GB/T 5009.5-1985 Method for determination of protein in foods
GB/T 35809-2018 Method for analysis of forestry biomass—Determination of protein content
GB 5009.5-2025 National Food Safety Standard Determination of Protein in Food
GB/T 5413.1-1997 Milk powder and formula foods for infant and young children-Determination of protein
GB/T 15673-1995 Method for determination of crude protein in edible fungi
GB/T 21704-2008 Determination of non-protein-nitrogen content in milk and dairy products
GB/T 38086-2019 Determination of metallothionein (MT) in biological samples

Professional Standard - Commodity Inspection

SN/T 2545-2010 Testing Method of Thermal Denaturation Protein in Animal Derived Food
SN/T 3926-2014 Determination of protein content in dairy foods,egg foods and soy foods for export - Coomassie brilliant blue method

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
CNS 5035-1986 Method of Test for Crude Protein in Food

National Health Commission of the People's Republic of China

GB 5009.5-2016 National Food Safety Standard — Determination of Protein in Foods
GB 5009.5-2010 Determination of Protein in Foods

Professional Standard - Textile

FZ/T 50018-2013 Determination of the protein content of the protein viscose fiber

Professional Standard - Agriculture

2330药典二部-2010 Appendix VII M Determination of protein content
201药典三部-2015 Content Determination Method 0731 General Principles of Protein Content Determination Method 50
220药典三部-2020 Content Determination Method 0731 Protein Content Determination Method
92药典四部-2020 0700 Other Determination Methods 0731 Determination of Protein Content
SN/T 5071-2018 Determination of 19 kinds of nonprotein nitrogen compounds infoodstuffs of origin for export - LC-MS/MS method

Group Standards of the People's Republic of China

T/CSIQ 77001-2020 Determination of α-Lactalbumin contents in dairy products— HPLC method
T/BPCT 001-2023 Determination of A2 β-casein content in cow milk and cow milk products by high performance liquid chromatography-mass spectrometry

AT-ON

ONORM DIN 10454-1993 Determination of protein content of caseins and caseinates - Reference method
ONORM DIN 10453-1993 Determination of water content of caseins and caseinates - Reference method

CZ-CSN

CSN 57 0153-1986 Testing methods for meat products and sterilized food in preserves. Determination of protein content according to Kjeldahl
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
CSN 57 0105 Cast.5-1984 Powdered and condensed milk products. Testing methods. Determination of protein content
CSN 56 0512-12-1995 Methods of milled produets analysis - Part 12: Determination of protein content
CSN 46 7092-27-1998 Testing methods for feeding stuffs - Part 27: Determination of the protein content

IN-BIS

IS 7219-1973 Methods for determination of protein in food and feed
IS 9487-1980 Specification for "ready-to-eat" protein-rich puffed foods
IS 11888-1987 Method for determination of charred particle content in casein and caseinates
IS 11963-1987 Photometric method for determination of lactose content in casein and caseinate
IS 8220-1976 Specification for concentrated nutritional supplement foods rich in protein

Bureau of Indian Standards

IS 18836-2024 Milk and Milk Products - Determination of Nitrogen Content - Determination of Protein and Non-Protein Nitrogen Content and True Protein Content Calculation (Reference Method)
IS 11888-2005 Casiens And Caseinated - Determination Of Contents Of Scorched Particles And Of Extraneous Matter

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 8968-4:2016(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 EN ISO 21415-4:2007 Wheat and wheat flour - Gluten content - Determination of dry gluten from wet gluten by a rapid drying method

German Institute for Standardization

DIN 10470:2011 Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
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 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 10454:1983-03 Determination of protein content of caseins and caseinates; reference method
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)
DIN 10470:2011-07 Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
DIN 10470 E:2010 Draft Document - Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
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-...
DIN 10466:2001-09 Determination of whey protein content in total protein of milk and milk products - Polarographic method
DIN 10466:2001 Determination of whey protein content in total protein of milk and milk products - Polarographic method
DIN 10453:1983-03 Determination of water content of caseins and caseinates; reference method
DIN 10470 E:2010-05 Draft Document - Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
DIN 10472:1996-06 Determination of casein and whey protein contents of milk and milk products - Electrophoretic method
DIN 10470:1999-07 Determining of whey protein content and casein content in total protein of milk and milk products by derivative spectroscopy
DIN EN ISO 21572 Berichtigung 1:2005 Food – Methods for the detection of genetically modified organisms and their products – Protein methods
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 21572:2004 Food – Methods for the detection of genetically modified organisms and their products – Protein methods
DIN ISO 5550 E:2020-06 Caseins and caseinates - Determination of moisture content (Reference method)
DIN ISO 5550:2020-12 Caseins and caseinates - Determination of moisture content (Reference method) (ISO 5550:2006)

CEN - European Committee for Standardization

EN ISO 8968-4:2001 Milk - Determination of Nitrogen Content - Part 4: Determination of Non-Protein Nitrogen Content

Ente Nazionale Italiano di Unificazione

UNI 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)
UNI ISO 5543:2018 Caseins and caseinates -- Determination of fat content -- Gravimetric method (Reference method)
UNI EN ISO 21572:2006 Foodstuffs - Methods for the detection of genetically modified organisms and derived products - Protein based methods

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 V03-032:2024 Foodstuffs - Determination of the nitrogen content by the Kjeldahl method and calculation of the protein content
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 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 V04-387:1985 Caseins and caseinates. Determination of protein content (reference method).
NF ISO 5550:2007 Caseins and caseinates - Determination of moisture content (reference method)

Danish Standards Foundation

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)

AR-IRAM

IRAM 15 707-1963 How to measure plant protein in food

Spanish Association for Standardization (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)
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)
UNE 34871:1986 PROCESSED CHEESE PRODUCTS. DETERMINATION OF THE PROTEIN CONTENT.

Korean Agency for Technology and Standards (KATS)

KS H 1204-2021 Testing method for crude proteins content
KS H 1204-2012 Testing method for crude proteins content
KS H 1204-2022 Testing method for crude proteins content
KS H 1204-2001 Testing method for crude proteins content
KS H ISO 5549:2021 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 ISO 5549-2006(2016) Caseins and caseinates－Determination of protein content(Reference method)

International Organization for Standardization (ISO)

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 | 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 5549:1978 Caseins and caseinates; Determination of protein content (Reference method)
ISO 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method

GCC Standardization Organization

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 2101:2010 Protein-Rich concentrated Nutrient Supplementary foods

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)

Magyar Szabványügyi Testület

MSZ KGST 2787-1980 Determination of protein content of preservative foods
MNOSZ 17619-1954 Definition of the concept of protein content in preserved foods

Kingdom of Bahrain Testing and Metrology Directorate

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)

Standards Norway

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)

VN-TCVN

TCVN 3705-1990 Aquatic products.Method for the determination of total nitrogen and protein content
TCVN 7871-3-2008 Wheat and wheat flour.Gluten content.Part 3: Determination of dry gluten from wet gluten by an oven drying method

Gosstandart of Russia

GOST ISO 8968-4-2021 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)..
GOST R 51470-1999 Caseins and caseinates. Method for determination of protein content
GOST 10846-1991 Grain and products of its processing. Method for determination of protein
GOST 23327-1978 Milk. Methods for determination of the total protein content
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 R 51464-1999 Caseins and caseinates. Method for determination of water content
GOST 34454-2018 Dairy products. Determination of protein content by the Kjeldahl method
GOST R 51454-1999 Caseins and caseinates. Method of determination of nitrate and nitrite contents
GOST ISO 5550-2017 Caseins and caseinates. Determination of moisture content (Reference method)

Swedish Institute for Standards

SS-EN ISO 8968-4:2017 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) (ISO 8968-4:2016)

PL-PKN

PN C04288-14-1987 Technical fats Methods of testing Determination of protein content

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 6356-1976 MILK AND MILK PRODUCTS Proteic substances determinat ion

Lithuanian Standards Office

LST ISO 5549:2001 Caseins and caseinates. Determination of protein content (Reference method) (identical ISO 5549:1978)

The Directorate General of Specifications and Metrology (DGSM)

OS GSO 2101:2010 Protein-Rich concentrated Nutrient Supplementary foods

South African Bureau of Standard

SANS 1159:2003 The production of pre-cooked frozen foods containing protein
SANS 21572:2005 Foodstuffs - Methods for the detection of genetically modified organisms and derived products - Protein based methods

International Dairy Federation (IDF)

IDF 78-2006 Caseins and caseinates. Determination of moisture content (Reference method)

Japanese Industrial Standards Committee (JISC)

JIS K 0602:2000 Proteins -- Serum albumin -- Methods for quantitative analysis

Others: Method for protein content in food,Method for Determination of Protein Content in Food,Method for Determination of Protein Content in Food