Detection of chitinase and thaumatin-like proteins in white wines (Type-IV)
OIV-MA-AS315-29 Detection of chitinase and thaumatin-like proteins in white wines
Type IV method
Method of determination of 1,2-propanediol and 2,3-butanediol (Type-IV)
OIV-MA-AS315-28 Method of determination of 1,2-propanediol and 2,3-butanediol
Type IV method
- Introduction
Measurable quantities of 1,2-propanediol and 2,3-butanediol are formed following fermentation processes. These compounds are practically absent in unfermented musts, yet found within certain limits in wines.
Analysis of volatile compounds in wines by gas chromatography (Type-IV)
OIV-MA-AS315-27 Analysis of volatile compounds in wines by gas chromatography
Type IV method
- Object
This method is applicable to the analysis of volatile compounds in wines containing less than 20 g/L sugar.
Method of determination of biogenic amines in wine by high-performance liquid chromatography with photodiode array detection (Type-IV)
OIV-MA-AS315-26 Method of determination of biogenic amines in wine by high-performance liquid chromatography with photodiode array detection
Type IV method
- Scope
This method is applicable to the analysis of biogenic amines in wines:
Determination of lysozyme in wine using high-performance liquid chromatography (Type-IV)
OIV-MA-AS315-25 Determination of lysozyme in wine using high-performance liquid chromatography
Type IV method
Determination of lysozyme in wine using high-performance capillary electrophoresis (Type-IV)
OIV-MA-AS315-24 Determination of lysozyme in wine using high-performance capillary electrophoresis
Type IV method
- Introduction
This method is used to detect the addition of lysozyme in wine but is not suitable for the assay or determination of lysozyme as an allergenic compound.
Quantification of potentially allergenic residues of fining agent proteins in wine (Type-I)
OIV-MA-AS315-23 Criteria for the methods of quantification of potentially allergenic residues of fining agent proteins in wine
Type of method: criteria
- Method Criteria Definitions
Trueness:
Determination of carboxymethyl cellulose in white wines (Type-IV)
OIV-MA-AS315-22 Determination of carboxymethyl cellulose (cellulose gum, CMC) in white wines
Type IV method
Determination of a-dicarbonyl compounds of wine by GC after derivatization (Type-IV)
OIV-MA-AS315-21 Method for the determination of α-dicarbonyl compounds of wine by GC after derivitatization by 1,2-diaminobenzene
Type IV method
Determination of a-dicarbonyl compounds of wine by HPLC after derivatization (Type-IV)
OIV-MA-AS315-20 Method for the determination of α-dicarbonyl compounds of wine by HPLC after derivizationation by 1,2-diaminobenzene
Type IV method