Methods for extracting proteins from organic matter

Methods for extracting proteins from organic matter, Total:163 items.

The international standard classification for "Methods for extracting proteins from organic matter" includes: food products in general , Textiles in general , Fruits. Vegetables , Biology. Botany. Zoology , Animal feeding stuffs , General methods of tests and analysis for food products , Edible oils and fats. Oilseeds , Latex and raw rubber , Other rubber and plastics products , Man-made fibres , Milk and processed milk products , Protection against crime .

The Chinese standard classification for "Methods for extracting proteins from organic matter" includes: Food sanitation , Basic standards and general methods , Silk and silk fabric in general , Other cash crops , Environmental Condition and General Test Method , Basic standard and general method on forestry , Livestock and poultry feed and additive , Basic standards and general methods , Oil crop and product , Medical and foodstuff rubber products , Melon, fruit and vegetable planting and product , Chemical fibre in general , Cereal crop and forage crop in general , Milk and dairy products , Crime judging technology .

Professional Standard - Chemical Industry

HG/T 3645-1999 Method for the determination of aqueous extractable protein in natural rubber gloves using the Lowry method

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

GB/T 5009.5-1985 Method for determination of protein in foods
GB/T 17811-2008 Determination of pepsin digestibility in animal protein feeds - Filtration method
GB/T 14771-1993 Method for determination of protein content in foods
GB 8856-1988 Method for Determination of Crude Protein in Fruit and Vegetable Products
GB/T 15673-1995 Method for determination of crude protein in edible fungi
GB 24788-2009 Limit for the removable surface powder and water-extractable protein of medical gloves
GB/T 34800-2017 Detection method of activity and impurity of proteinase K
GB/T 35809-2018 Method for analysis of forestry biomass—Determination of protein content
GB/T 21870-2008 Medical gloves made from natural rubber latex - Determination of water-extractable protein using the modified Lowry method
GB/T 14489.2-1993 Method for determination of crude protein in oilseed
GB/T 22260-2023 Determination of anabolic steroids in feeds—Liquid chromatography-tandem mass spectrometry
GB/T 44214-2024 Test method for non-protein content in silk
GB/T 5009.5-2003 Determination of protein in foods
GB/T 19495.8-2004 Detection of genetically modified plants and derived products-Protein based methods
GB/T 17811-1999 Determination of digestibility in animal protein feeds--Pepsin method
GB/T 8856-1988 Method for determination of crude protein in fruit and vegetable products

Professional Standard - Textile

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

Taiwan Provincial Standard of the People's Republic of China

CNS 5035-1986 Method of Test for Crude Protein in Food
CNS 3449-2007 Method of test for milk and milk products - Determination of protein
CNS 3449-1988 Methods of Test for Milk and Milk Products: The Quantitive Analysis of Protein
CNS 2770.5-1986 Method of Test for Feeds : Determination of Crude Protein

Hebei Provincial Standard of the People's Republic of China

DB13/T 5127.14-2019 Determination of Toxic and Hazardous Substances in Extracts of Implantable Medical Devices - Visible-UV Spectrophotometry for Protein Migration
DB13/T 1098-2009 Determination of protein in feed

Group Standards of the People's Republic of China

T/SHNX 001-2025 Determination of lactoferrin, α-lactalbumin and β-lactoglobulin in raw bovine milk by liquid chromatography-tandem mass spectrometry
T/CSES 180-2024 Determination of Extractable Organic Fluorine in Water Quality by Combustion Ion Chromatography
T/ZJBX 10-2021 Determination of the proportion of protein hydrolysates with relative molecular weight less than 1000u in protein feed

Professional Standard - Commodity Inspection

SN/T 3926-2014 Determination of protein content in dairy foods,egg foods and soy foods for export - Coomassie brilliant blue method
SN/T 0803.9-1999 Oil bearing materials for import and export—Method for the determination of crude protein
SN/T 0800.3-1999 Cereals and feedstuffs for import and export - Method for the determination of crude protein

Professional Standard - Agriculture

176药典三部-2010 Appendix Ⅵ ⅥB protein assay
NY/T 1678-2008 Determination of protein in milk and dairy products Biuret spectrophotometry method

Heilongjiang Provincial Standard of the People's Republic of China

DB2301/T 213-2024 Technical specification for improving organic matter in the tillage layer of dryland albic soil

Professional Standard - Public Safety Standards

GA/T 819-2009 Analytical method of acid dyes on the protein fibers

Jilin Provincial Standard of the People's Republic of China

DB22/T 294-2020 Method for identification of adulteration of crude protein in corn gluten meal
DB22/T 2002-2014 Protein Rapid Detector in Milk and Milk Powder

Military Standard of the People's Republic of China-General Armament Department

GJB 8682.4-2015 Methods for chemical analysis of pyrotechnics Part 4: Extraction of organic matter in samples and residues Organic solvent extraction method

Military Standard of the People's Republic of China-Commission of Science,Technology and Industry for National Defence

GJB 5381.4-2005 Methods of chemical analysis for pyrotech. Part 4: Extract organic compound from sample and residuum. Organic solvent extraction method

Gosstandart of Russia

GOST R 57475-2017 Dried egg protein after extraction lysozyme. Specifications
GOST R 51466-1999 Caseins. Method for determination of "fixed ash" mass fraction
GOST 25179-1990 Milk. Methods for determination of protein
GOST 34551-2019 Сonfectionery. Method for determination of mass fraction of protein
GOST R 54478-2011 Grain. Methods of determination quantity and quality of gluten in wheat
GOST 25011-1981 Meat and meat products. Methods of protein determination
GOST 25179-2014 Milk and milk products. Method for determination of protein
GOST 25011-2017 Meat and meat products. Protein determination methods
GOST 10846-1991 Grain and products of its processing. Method for determination of protein
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 13979.3-1968 Oilcakes oil-meals. Methods of determination of soluble proteins

AT-ON

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

American Society for Testing and Materials (ASTM)

ASTM D8238-18 Standard Test Method for Immunological Assay to Quantify Extractable Guayule Natural Rubber (GNR) Proteins
ASTM D5712-05e1 Standard Test Method for Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method
ASTM D5712-99e1 Standard Test Method for Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method
ASTM F831-83 Net Protein Ratio (NPR) Test Method
ASTM D8238-24 Standard Test Method for Immunological Assay to Quantify Extractable Guayule Natural Rubber (GNR) Proteins
ASTM D5712-15(2025) Standard Test Method for Analysis of Aqueous Extractable Protein in Latex, Natural Rubber, and Elastomeric Products Using the Modified Lowry Method
ASTM D5712-15(2020) Standard Test Method for Analysis of Aqueous Extractable Protein in Latex, Natural Rubber, and Elastomeric Products Using the Modified Lowry Method
ASTM D8238-18(2023) Standard Test Method for Immunological Assay to Quantify Extractable Guayule Natural Rubber (GNR) Proteins
ASTM D7818-12 Standard Test Method for Enumeration of Proteolytic Bacteria in Fresh (Uncured) Hides and Skins
ASTM D5712-10 Standard Test Method for Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method
ASTM D5712-99 Standard Test Method for the Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method
ASTM D6188-17 Standard Test Method for Viscosity of Cellulose by Cuprammonium Ball Fall
ASTM D5712-05 Standard Test Method for Analysis of Aqueous Extractable Protein in Natural Rubber and Its Products Using the Modified Lowry Method

Japanese Industrial Standards Committee (JISC)

JIS K 0602:2000 Proteins -- Serum albumin -- Methods for quantitative analysis
JIS K 0605:2000 Proteins -- Trypsin -- Methods for quantitative analysis
JIS K 0606:2000 Proteins -- Transferrin -- Methods for quantitative analysis
JIS K 0603:2000 Proteins -- Immunoglobulin -- Methods for quantitative analysis
JIS K 0604:2000 Proteins -- Monoclonal IgG -- Methods for quantitative analysis
JIS K 0607:2000 Proteins -- Glucoseoxydase -- Methods for quantitative analysis

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
CSN 57 0111-2-2002 Testing methods for casein and caseinates - Methods of samphng of Chemical analysis
CSN 56 0186 Cast.12-1981 Testing methods for beer. art 12. etermination of proteins

IN-BIS

IS 7219-1973 Methods for determination of protein in food and feed
IS 7481-1974 How to measure protein efficiency ratio (PER)
IS 2006-1988 Methods for the quantitative chemical analysis of binary mixtures of protein fibers and certain other non-protein fibers

Standard Association of Australia （SAA）

AS 1871.9:1976 List of methods for examination of waters Nitrogen (albuminoid)
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)
AS N60:1970 Methods for the sampling and analysis of acid and rennet caseins

German Institute for Standardization

DIN 10454:1983-03 Determination of protein content of caseins and caseinates; reference method
DIN EN 17331:2024-05 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis
DIN EN 17331:2024 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis; German version EN 17331:2023
DIN 10470:2011 Milk and milk products - Determination of whey protein content and casein content in total protein - Derivative spectroscopic method
DIN EN 17331:2022-06 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis; German and English version prEN 17331:2022 / Note: Date of issue 2022-05-06*Intended as replacement for DIN CEN/...
DIN CEN/TS 17331:2019-07*DIN SPEC 18486:2019-07 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis; German version CEN/TS 17331:2019 / Note: To be replaced by DIN EN 17331 (2022-06).
DIN CEN/TS 17331:2019*DIN SPEC 18486:2019 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis
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 17331:2022 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis; German and English version prEN 17331:2022
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
DIN 10464:1994 Determination of casein content, casein and whey protein contents in total protein of milk and milk products - Casein-phosphorus method
DIN EN 17331 E:2022 Draft Document - Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis; German and English version prEN 17331:2022
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 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-...

Korean Agency for Technology and Standards (KATS)

KS H 1204-2012 Testing method for crude proteins content
KS H 1204-2001 Testing method for crude proteins content
KS H 1204-2022 Testing method for crude proteins content
KS H 1204-2021 Testing method for crude proteins content
KS M ISO 12243-2017(2022) Medical gloves made from natural rubber latex — Determination of water-extractable protein using the modified Lowry method
KS H ISO 5549:2021 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 Caseins and caseinates－Determination of protein content(Reference method)
KS H ISO 5549-2006(2016) Caseins and caseinates－Determination of protein content(Reference method)
KS J ISO 21572:2009 Foodstuffs-Methods for the detection of genetically modified organisms and derived products-Protein based methods
KS F 2510-2002 Testing method of organic impurities in sands aggregate for concrete
KS M 1426-2013 Testing methods for heavy metal extraction from media
KS M 1426-2004(2010) Testing methods for heavy metal extraction from media
KS M ISO 12243-2017 Medical gloves made from natural rubber latex — Determination of water-extractable protein using the modified Lowry method

Ente Nazionale Italiano di Unificazione

UNI EN ISO 6427:2014 Plastics - Determination of matter extractable by organic solvents (conventional methods)
UNI 22632:2002 Oilseeds - Vegetable proteins content - Determination of total proteins (biuret method)
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 EN ISO 8968-5:2002 Milk - Determination of nitrogen content - Determination of protein- nitrogen content
UNI CEN/TS 17331:2019 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis
UNI EN 17331:2024 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis
UNI 22609:1992 Seed and vegetable oils and derived products. Vegetable proteins. Determination of total residue hexane in protein substances.

AR-IRAM

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

International Organization for Standardization (ISO)

ISO 5549:1978 Caseins and caseinates; Determination of protein content (Reference method)
ISO 21572:2004 Foodstuffs - Methods for the detection of genetically modified organisms and derived products - Protein based methods
ISO 21572:2013 Foodstuffs - Molecular biomarker analysis - Protein-based methods
ISO/DTS 7833:2023 Nanotechnologies — Extraction method of nanomaterials from lung tissue by proteinase K digestion
ISO/TS 7833:2024 Nanotechnologies — Extraction method of nanomaterials from lung tissue by proteinase K digestion
ISO 12243:2003/Amd 1:2012 Medical gloves made from natural rubber latex — Determination of water-extractable protein using the modified Lowry method — Amendment 1
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 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method

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)

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 6427:2025 Plastics. Determination of matter extractable by organic solvents (conventional methods)
PD ISO/TS 7833:2024 Nanotechnologies — Extraction method of nanomaterials from lung tissue by proteinase K digestion
PD CEN/TS 17331:2019 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis
BS EN 17331:2023 Construction products: Assessment of release of dangerous substances. Content of organic substances. Methods for extraction and analysis
BS PD CEN/TS 17331:2019 Construction products: Assessment of release of dangerous substances. Content of organic substances. Methods for extraction and analysis
BS PD ISO/TS 7833:2024 Nanotechnologies. Extraction method of nanomaterials from lung tissue by proteinase K digestion
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)
22/30444876 DC BS EN 17331. Construction products: Assessment of release of dangerous substances. Content of organic substances. Methods for extraction and analysis

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)
DANSK DS/CEN/TS 17331:2019 Construction products: Assessment of release of dangerous substances – Content of organic substances – Methods for extraction and analysis
DANSK DS/EN 17331:2023 Construction products: Assessment of release of dangerous substances – Content of organic substances – Methods for extraction and analysis

Swedish Institute for Standards

SIS-CEN/TS 17331:2020 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis
SS-EN 17331:2023 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis

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)
UNE 34081:1975 ANALYSIS METHODS FOR CHOCOLATES. MILK PROTEINS.
AENOR UNE 34400-7:1967 Test methods for wheat flour. Determination of protein.
UNE 34400-7:1967 TEST METHODS OF WHEAT FLOUR. PROTEIN DETERMINATION
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 34080:1974 ANALYSIS METHODS FOR CHOCOLATES. DETERMINATION OF TOTAL NITROGEN. (PROTEINS).

Association Francaise de Normalisation

NF P01-039*NF EN 17331:2023 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis
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 V04-387:1985 Caseins and caseinates. Determination of protein content (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 EN 17331:2023 Construction products: assessment of the emission of dangerous substances - Organic matter content - Extraction and analysis methods

European Committee for Standardization (CEN)

EN 17331:2023 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis
CEN/TS 17331:2019 Construction products: Assessment of release of dangerous substances - Content of organic substances - Methods for extraction and analysis

Lithuanian Standards Office

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

UY-UNIT

UNIT 408-1975 Extraction method of samples from vegetable tannin materials

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)

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)

CEN - European Committee for Standardization

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

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)

PL-PKN

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

CH-SNV

SN 210 100-1987 Technical drawings - Sizes and layout of drawing sheets

VN-TCVN

TCVN 3705-1990 Aquatic products.Method for the determination of total nitrogen and protein content

American Water Works Association (AWWA)

AWWA WQTC65752 Protein Assay in Drinking Water and Reclaimed Water

Others: