Determination method of protein hydrolysis degree

Determination method of protein hydrolysis degree, Total:275 items.

The international standard classification for "Determination method of protein hydrolysis degree" includes: Fruits. Vegetables , food products in general , Animal feeding stuffs , Edible oils and fats. Oilseeds , Meat and meat products , General methods of tests and analysis for food products , Biology. Botany. Zoology , Latex and raw rubber , Man-made fibres , Medical Sciences and health care facilities in general , Medical equipment .

The Chinese standard classification for "Determination method of protein hydrolysis degree" includes: Melon, fruit and vegetable planting and product , Food sanitation , Basic standards and general methods , Other cash crops , Livestock and poultry feed and additive , Oil crop and product , Basic standard and general method on forestry , Cereal crop and forage crop in general , Meat processing and products , Basic standards and general methods , Food processing and products in general , Environmental Condition and General Test Method , Medical and foodstuff rubber products , Chemical fibre in general , Sanitation in general , Basic standards and general methods , Medical laboratory equipment .

Hebei Provincial Standard of the People's Republic of China

DB13/T 1098-2009 Determination of protein in feed
DB13/T 812-2006 Determination of protein solubility in soybeans and their products

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

GB 8856-1988 Method for Determination of Crude Protein in Fruit and Vegetable Products
GB/T 6432-1994 Method for the determination of crude protein in feedstuffs
GB/T 17811-1999 Determination of digestibility in animal protein feeds--Pepsin method
GB/T 19495.8-2004 Detection of genetically modified plants and derived products-Protein based methods
GB/T 35809-2018 Method for analysis of forestry biomass—Determination of protein content
GB/T 41366-2022 Livestock and poultry meat quality testing—Determination of moisture,protein and fat—Near-infrared spectroscopy method
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 15673-1995 Method for determination of crude protein in edible fungi
GB/T 5009.5-2003 Determination of protein in foods
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 5511-1985 Inspection of grain and oilseeds--Methods for determination of crude protein
GB/T 34800-2017 Detection method of activity and impurity of proteinase K
GB/T 8856-1988 Method for determination of crude protein in fruit and vegetable products
GB/T 14771-1993 Method for determination of protein content in foods

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/FDSA 0050-2024 Method for determination of the bioavailability of oral collagen protein
T/ZGKSL 009-2023 Test method for determination of collagen secreted from human cells induced by recombinant collagen
T/SDAS 895-2024 Determination of the porosity of gluten protein network in wheat dough
T/HNNMIA 7-2023 Calcined dolomite analytical methods - Determination of activity - Hydrolysis method
T/ZJBX 10-2021 Determination of the proportion of protein hydrolysates with relative molecular weight less than 1000u in protein feed

Professional Standard - Light Industry

QB/T 4363-2012 Determination of Immunoglobulin Egg Yolk (IgY) Activity in Toothpastes
QB/T 2186-1995 Determination of Nitrogen Content of Hydrolyzed Protein Liquid with Ammonia Electrode Method

Professional Standard - Chemical Industry

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

Professional Standard - Agriculture

220药典三部-2020 Content Determination Method 0731 Protein Content Determination Method
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
176药典三部-2010 Appendix Ⅵ ⅥB protein assay
92药典四部-2020 0700 Other Determination Methods 0731 Determination of Protein Content
111药典四部-2015 0700 Other Determination Methods 0731 Determination of Protein Content
NY/T 3608-2020 Determination of collagen content in livestock and poultry bone—Colorimetric method

Taiwan Provincial Standard of the People's Republic of China

CNS 2770.5-1986 Method of Test for Feeds : Determination of Crude Protein
CNS 2770-5-1986 Method of Test for Feeds : Determination of Crude Protein
CNS 3449-2007 Method of test for milk and milk products - Determination of protein

Professional Standard - Textile

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

National Health Commission of the People's Republic of China

WST 341:2011 Hemoglobin measurement reference method

Professional Standard - Hygiene

WS/T 341-2011 Reference method for haemoglobinometry in human blood
WS/T 42-1996 Blood - Determination of carboxyhemoglobin - Spectrophotometric method
WS 341-2011 Reference method for hemoglobin determination

Professional Standard - Medicine

YY/T 1790-2021 Fibrin/fibrinogen degradation products testing kit(Iatex immunoturbidimetry)

未注明发布机构

CLSI C64-2021 Quantitative Measurement of Proteins and Peptides by Mass Spectrometry

Gosstandart of Russia

GOST R 53974-2010 Enzyme preparations for food industry. Method for determination of proteolitic activity
GOST 20264.2-1988 Enzyme preparations. Methods for determination of proteolytic activity
GOST 25179-1990 Milk. Methods for determination of protein
GOST R 51464-1999 Caseins and caseinates. Method for determination of water content
GOST 34430-2018 Enzyme preparations for food industry. Method for the determination of proteolitic activity
GOST ISO 5550-2017 Caseins and caseinates. Determination of moisture content (Reference method)
GOST R 51470-1999 Caseins and caseinates. Method for determination of protein content
GOST ISO 5548-2016 Caseins and caseinates. Photometric method for determining the mass fraction of lactose
GOST R 51468-1999 Caseins. Method for determination of free acidity
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 34551-2019 Сonfectionery. Method for determination of mass fraction of protein
GOST 10846-1991 Grain and products of its processing. Method for determination of protein
GOST R 51467-1999 Caseins and caseinates. Method for determination of pH
GOST 31978-2012 Caseins and caseinates. Method for determination of pH
GOST R 52993-2008 Caseins and caseinates. Determination of moisture content (Reference method)
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 51469-1999 Caseins and caseinates. Photometric method for determination of lactose content
GOST R 51466-1999 Caseins. Method for determination of "fixed ash" mass fraction
GOST 13979.3-1968 Oilcakes oil-meals. Methods of determination of soluble proteins
GOST R 51454-1999 Caseins and caseinates. Method of determination of nitrate and nitrite contents
GOST R 54478-2011 Grain. Methods of determination quantity and quality of gluten in wheat
GOST 28075-1989 Vegetable fodder. Method for the determination of crude protein splitting
GOST 28074-1989 Vegetable fodder. Method for the determination of crude protein solubility
GOST R 51463-1999 Rennet caseins and caseinates. Method for determination of ASH content
GOST 34454-2018 Dairy products. Determination of protein content by the Kjeldahl method

American Society for Testing and Materials (ASTM)

ASTM D7818-12 Standard Test Method for Enumeration of Proteolytic Bacteria in Fresh (Uncured) Hides and Skins
ASTM F831-83 Net Protein Ratio (NPR) Test Method
ASTM D6188-17 Standard Test Method for Viscosity of Cellulose by Cuprammonium Ball Fall
ASTM F830-83 Method for preparing meat, by-products and meat products for determining protein efficiency ratio or net protein ratio
ASTM D2169-66 Method for determining the odor of whey protein

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 0602:1992 Methods for quantitative analysis of serum albumin
JIS K 0607:2000 Proteins -- Glucoseoxydase -- Methods for quantitative analysis

German Institute for Standardization

DIN 10454:1983-03 Determination of protein content of caseins and caseinates; reference method
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)
DIN 10453:1983-03 Determination of water content of caseins and caseinates; reference 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 ISO 5550:2020 Caseins and caseinates - Determination of moisture content (Reference method) (ISO 5550:2006)
DIN 10450:1983-03 Determination of free acidity of caseins; reference method
DIN EN 15948:2020-12 Cereals - Determination of moisture and protein - Method using Near-Infrared Spectroscopy in whole kernels; German version EN 15948:2020
DIN 10456:1989-04 Determination of pH of caseins and caseinates; reference method
DIN ISO 5546:2020-12 Caseins and caseinates - Determination of pH (Reference method) (ISO 5546:2010)
DIN ISO 5550:2020-06 Draft Document - Caseins and caseinates - Determination of moisture content (Reference method) (ISO 5550:2006); Text in German and English
DIN ISO 5546 E:2020-08 Caseins and caseinates - Determination of pH (Reference method)
DIN 10466:2001 Determination of whey protein content in total protein of milk and milk products - Polarographic 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 SPEC 13290:2021 Protein analysis - Evaluation criteria for thermal unfolding methods (DSF and DSC); Text in German and English
DIN EN 15948:2015-06 Cereals - Determination of moisture and protein - Method using Near-Infrared-Spectroscopy in whole kernels
DIN ISO 5545:2020-12 Rennet caseins and caseinates - Determination of ash (Reference method) (ISO 5545:2008)
DIN 10470:2011 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 10452:1983-03 Determination of ash of rennet caseins and caseinates; reference method
DIN 10470:1999 Determination of whey protein content and casein content in total protein of milk and milk products - Derivative spectroscopic method
DIN ISO 5545 E:2020-06 Rennet caseins and caseinates - Determination of ash (Reference 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 EN 15948:2012-05 Cereals - Determination of moisture and protein - Method using Near-Infrared-Spectroscopy in whole kernels
DIN ISO 5546:2020-08 Draft Document - Caseins and caseinates - Determination of pH (Reference method) (ISO 5546:2010); Text in German and English
DIN ISO 5546:2020 Caseins and caseinates - Determination of pH (Reference method) (ISO 5546:2010)
DIN 58931 E:2021-02 Haematology - Determination of haemoglobin concentration in blood - Reference method
DIN 58931 E:2009-03 Haematology - Determination of haemoglobin concentration in blood - Reference method

CZ-CSN

CSN 57 0111-3-2002 Testing methods for casein and caseinates - Determination of moisture
CSN 57 0111 Cast.10-1979 Testing methods for casein. Determination of purity
CSN 57 0111-5-2002 Testing methods for casein and caseinates - Determination of protein content
CSN 57 0111-8-2002 Testing methods for casein and caseinates - Determination of titratable acidity
CSN 570111-5-2002 Testing methods for casein and caseinates - Determination of protein content
CSN 56 0186 Cast.12-1981 Testing methods for beer. art 12. etermination of proteins
CSN 57 0111-12-2002 Testing methods for casein and caseinates - Determination of pH
CSN 57 0111-7-2002 Testing methods for casein and caseinates - Determination of ash
CSN 57 0105 Cast.5-1984 Powdered and condensed milk products. Testing methods. Determination of protein content
CSN 57 0111 Cast.6-1985 Testing methods for casein. Determination of lactose
CSN 57 0111 Cast.11-1979 Testing methods for casein. Determination of colour
CSN 570111-3-2002 Testing methods for casein and caseinates - Determination of moisture
CSN 46 7092-27-1998 Testing methods for feeding stuffs - Part 27: Determination of the protein content
CSN 570111-8-2002 Testing methods for casein and caseinates - Determination of titratable acidity

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 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 5549-2021 Caseins and caseinates — Determination of protein content(Reference method)
KS H ISO 5549-2006(2016) Caseins and caseinates－Determination of protein content(Reference method)
KS H ISO 5550-2007(2021) Caseins and caseinates－Determination of moisture content(Reference method)
KS H ISO 5550-2007(2012) Caseins and caseinates－Determination of moisture content(Reference method)
KS H ISO 5550:2007 Caseins and caseinates－Determination of moisture content(Reference method)
KS H 1204-2021 Testing method for crude proteins content
KS H ISO 5548:2020 Caseins and caseinates－Determination of lactose content－Photometric method
KS H ISO 5550-2021 Caseins and caseinates－Determination of moisture content(Reference method)
KS H ISO 5548:2006 Caseins and caseinates－Determination of lactose content－Photometric method
KS H ISO 5548-2020 Caseins and caseinates－Determination of lactose content－Photometric method
KS H ISO 5546:2006 Caseins and caseinates－Determination of pH(Reference method)
KS L 5113-2023 Testing method for whiteness of white portland cement
KS H ISO 5547-2021 Caseins — Determination of free acidity(Reference method)
KS J 4201-2023 Methods for quantitative analysis of serum albumin
KS H ISO 5547-2006(2016) Caseins－Determination of free acidity(Reference method)
KS H ISO 5547:2006 Caseins－Determination of free acidity(Reference method)
KS H ISO 5547:2021 Caseins — Determination of free acidity(Reference method)
KS I ISO 5813-2014(2019) Water quality — Determination of dissolved oxygen — Iodometric method

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
ONORM DIN 10456-1993 Determination of pH of caseins and caseinates - Reference method

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)

VN-TCVN

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

Danish Standards Foundation

DS 2253:1983 Water quality. Determination of aerobic proteclytic bacteria at 30 centigrades
DANSK DS/ISO 15323:2002 Dried milk protein products - Determination of nitrogen solubility index
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)
DS/ISO 15323:2002 Dried milk protein products - Determination of nitrogen solubility index
DANSK DS/EN 15948:2020 Cereals – Determination of moisture and protein – Method using Near-Infrared Spectroscopy in whole kernels
DS/EN 15948:2020 Cereals – Determination of moisture and protein – Method using Near-Infrared Spectroscopy in whole kernels

International Organization for Standardization (ISO)

ISO 5549:1978 Caseins and caseinates; Determination of protein content (Reference method)
ISO 15323:2002|IDF173:2002 Determination of nitrogen solubility rate of milk powder protein products
ISO 15323:2002 Dried milk protein products - Determination of nitrogen solubility index
ISO 15323:2002 | IDF 173:2002 Dried milk protein products — Determination of nitrogen solubility index
ISO 5550:2006 Caseins and caseinates - Determination of moisture content (Reference method)
ISO 5550:2006|IDF 78:2006 Caseins and caseinates — Determination of moisture content (Reference method)
ISO 5547:2008 | IDF 91:2008 Caseins — Determination of free acidity (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 5550:1978 Caseins and caseinates; Determination of water content (Reference method)
ISO 5548:2004|IDF 106:2004 Caseins and caseinates — Determination of lactose content — Photometric method
ISO 5548:2004 | IDF 106:2004 Caseins and caseinates — Determination of lactose content — Photometric method
ISO 5548:2004 Caseins and caseinates - Determination of lactose content - Photometric method
ISO 5550:2006 | IDF 78:2006 Caseins and caseinates — Determination of moisture content (Reference method)
ISO 5548:1980 Caseins and caseinates; Determination of lactose content; Photometric 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 5546:2010|IDF 115:2010 Determination of pH value of casein and caseinate (standard method)
ISO 5546:2010 | IDF 115:2010 Caseins and caseinates — Determination of pH (Reference method)
ISO 5546:2010 Caseins and caseinates - Determination of pH (Reference method)
ISO 20483:2006 Cereals and pulses - Determination of the nitrogen content and calculation of the crude protein content - Kjeldahl method
ISO 5547:2008 Caseins - Determination of free acidity (Reference method)
ISO 5547:1978 Caseins; Determination of free acidity (Reference method)
ISO 5547:2008|IDF 91:2008 Caseins — Determination of free acidity (Reference method)

PL-PKN

PN P04901-1987 Determination of keratin matters solubility in reagents for chemical damage characterictic
PN C04576 ArkusZ13-1973 Water and waste water Tests for nilrogen Determination of albuminous nitrogen
PN-EN 15948-2021-03 E Cereals -- Determination of moisture and protein -- Method using Near-Infrared Spectroscopy in whole kernels
PN B04309-1973 Cement Methods of test etermination of whltnees gree

RO-ASRO

STAS SR 13348-1-1996 Tea. Analysis methods. Determination of proteic nitrogen by the Kjeldahl method. Spectrophotometric method
STAS 21/6-1973 OILSEED RESIDUES Determination of protein of protein brut content
STAS 2213/17-1976 SWEETS Determination of total proteinic content and milk proteinic substance content
STAS 6182/44-1977 WIN E Determination of proteins
SR 5546-1997 Caseins and caseinates - Determination of pH (Reference method)
SR ISO 5549:1996 Caseins and caseinates - Determination of protein content (Reference method)

Association Francaise de Normalisation

NF ISO 5550:2007 Caseins and caseinates - Determination of moisture content (reference method)
NF ISO 5547:2008 Caseins - Determination of free acidity (Reference method)
NF V04-387:1985 Caseins and caseinates. Determination of 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 V04-388*NF ISO 5548:2008 Caseins and caseinates - Determination of lactose content - Photometric method.
NF ISO 5548:2008 Caseins and caseinates - Determination of lactose content - Photometric method
NF ISO 5546:2010 Caseins and caseinates - Determination of pH (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 V04-386:1985 Caseins. Determination of free acidity (reference method).
NF V04-386*NF ISO 5547:2008 Caseins - Determination of free acidity (Reference method)
NF ISO 5545:2008 Rennet caseins and caseinates - Determination of ash (Reference method)

International Dairy Federation (IDF)

IDF 78-2006 Caseins and caseinates. Determination of moisture content (Reference method)
IDF 91-2008 Caseins - Determination of free acidity (Reference method)
IDF 173-2002 Dried milk protein products - Determinatio of nitrogen solubility index
IDF 90-2008 Rennet caseins and caseinates - Determination of ash (Reference method)

IN-BIS

IS 7481-1974 How to measure protein efficiency ratio (PER)
IS 11963-1987 Photometric method for determination of lactose content in casein and caseinate
IS 7219-1973 Methods for determination of protein in food and feed
IS 11964-1987 Method for determination of free acidity in casein (reference method)
IS 11962-1987 Method for determination of ash content in chymosin casein and caseinate (reference method)
IS 11888-1987 Method for determination of charred particle content in casein and caseinates

Bureau of Indian Standards

IS 11920-2012 Cassein and Caseinates -Determination of Moisture Content (Reference Method)
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 11964-2012 Caseins â€” Determination of Free Acidity (Reference Method)
IS 11963-2005 Caeins and Caseinates - Determination of Lactose Content - Photometric Method
IS 11962-2012 Rennet Caseins and Caseinatesâ€” Determination of Ash (Reference Method)
IS 11888-2005 Casiens And Caseinated - Determination Of Contents Of Scorched Particles And Of Extraneous Matter
IS/ISO 11919-2012 Caseins â€” Determination of "Fixed Ash"Â (Reference Method)

Spanish Association for Standardization (UNE)

AENOR UNE 77059:2002 Water quality. Determination of aluminum. Colorimetric method with eriochromocyanin R.
AENOR UNE 34400-7:1967 Test methods for wheat flour. Determination of protein.
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 34400-7:1967 TEST METHODS OF WHEAT FLOUR. PROTEIN DETERMINATION
UNE 34080:1974 ANALYSIS METHODS FOR CHOCOLATES. DETERMINATION OF TOTAL NITROGEN. (PROTEINS).
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-EN 15948:2021 Cereals - Determination of moisture and protein - Method using Near-Infrared Spectroscopy in whole kernels
UNE-EN 15948:2015 Determination of moisture and protein content in cereals by near infrared spectroscopy

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 ISO 15323:2002 Dried milk protein products. Determination of nitrogen solubility index
BS ISO 5547:2008 Caseins - Determination of free acidity (Reference method)
BS ISO 5550:2006 Caseins and caseinates - Determination of moisture content (Reference method)
BS EN 15948:2015 Cereals. Determination of moisture and protein. Method using Near-Infrared-Spectroscopy in whole kernels
BS 6248-10:1986 Caseins and caseinates-Method for determination of fat (gravimetric reference method)
BS ISO 5548:2004 Caseins and caseinates - Determination of lactose content - Photometric methods
BS EN 15948:2012 Cereals. Determination of moisture and protein. Method using Near-Infrared- Spectroscopy in whole kernels
BS 6248-9:1984 Caseins and caseinates-Method for the determination of scorched particles
BS 4289-6:1986 Methods for the analysis of oilseeds-Determination of oil, moisture and volatile matter, and protein by infrared reflectance
BS ISO 5546:2010 Caseins and caseinates - Determination of pH (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 ISO 5545:2008 Rennet caseins and caseinates - Determination of ash (Reference method)
BS EN 15948:2020 Cereals. Determination of moisture and protein. Method using Near-Infrared Spectroscopy in whole kernels

Kingdom of Bahrain Testing and Metrology Directorate

BH GSO ISO 15323:2016 Dried milk protein products -- Determination of nitrogen solubility index
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)

The Directorate General of Specifications and Metrology (DGSM)

OS GSO ISO 15323:2014 Dried milk protein products -- Determination of nitrogen solubility index
OS GSO ISO 5548:2015 Caseins and caseinates -- Determination of lactose content -- Photometric method
OS GSO ISO 5550:2015 Caseins and caseinates -- Determination of moisture content (Reference method)

Ente Nazionale Italiano di Unificazione

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 ISO 5543:2018 Caseins and caseinates -- Determination of fat content -- Gravimetric method (Reference method)
UNI 22629:2002 Oilseeds - Vegetable proteins content - Determination of soluble proteins (Bradford method)
UNI 10414:1994 Soft wheat and durum wheat. Definition of varietal purity by electrophoresis of proteins. Rapid method.

Lithuanian Standards Office

LST ISO 5549:2001 Caseins and caseinates. Determination of protein content (Reference method) (identical ISO 5549:1978)
LST ISO 15323:2005 Dried milk protein products. Determination of nitrogen solubility index (idt ISO 15323:2002)
LST ISO 5548:2004 Caseins and caseinates. Determination of lactose content. Photometric method (idt ISO 5548:2004)

American Water Works Association (AWWA)

AWWA WQTC65752 Protein Assay in Drinking Water and Reclaimed Water

GCC Standardization Organization

GSO ISO 5550:2015 Caseins and caseinates -- Determination of moisture content (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 5548:2015 Caseins and caseinates -- Determination of lactose content -- Photometric 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)
NS-EN 15948:2020 Cereals — Determination of moisture and protein — Method using Near-Infrared Spectroscopy in whole kernels
NS-EN 15948:2015 Cereals — Determination of moisture and protein — Method using Near-Infrared-Spectroscopy in whole kernels
NS-EN 15948:2012 Cereals — Determination of moisture and protein — Method using Near-Infrared-Spectroscopy in whole kernels

CEN - European Committee for Standardization

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

BE-NBN

NBN T 91-253-1976 Water analysis methods - Determination of the albuminoid nitrogen

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)

Magyar Szabványügyi Testület

MSZ KGST 1422-1978 Determination of protein content of phosphorus and phosphorus inorganic mixtures
MNOSZ 448-28.lap-1955 Water testing - amino acid protein testing

AR-IRAM

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

CU-NC

NC 86-05-1984 Cereals. Flours Determination of Protein
NC 57-98-1-1986 Clinical Methods and Aids. Photometric Determination of Hemoglobin in Blood. Chemical Analysis Method

PT-IPQ

NP 1986-1991 Milks Determination of protein content. Kjeldahl technique

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)

NL-NEN

NEN 3145-1966 Feeding stuffs. Methodsof analysis. Determination of crude protein

Others: Determination method of degree of proteolysis,Method for Determination of Degree of Proteolysis,Method for Determination of Degree of Proteolysis,Determination method of degree of hydrolysis,Determination method of degree of hydrolysis,Method for Determination of Degree of Hydrolysis