Differentiation of fortified musts and sweet fortified wines
OIV-MA-AS5-01 Differentiation of fortified musts and sweet fortified wines
Type IV method
- Principle of the method
1.1. Method of screening
Enumerating yeasts of the species Brettanomyces bruxellensis using qPCR (Type-IV)
OIV-MA-AS4-03 Enumerating yeasts of the species Brettanomyces bruxellensis using qPCR
Type IV method
Warning to users
Phenol: All handling procedures involving phenol must be performed under a fume hood and gloves must be worn. All phenol-contaminated residues must be collected in suitable containers.
Detection of preservatives and fermentation inihibitors (Sodium Azide by HPLC) (Type-IV)
OIV-MA-AS4-02F Detection of preservatives and fermentation inhibitors
Type IV method
- Sodium Azide
1.1. Method by high performance liquid chromatography
Detection of preservatives and fermentation inihibitors (Examination of dehydroacetic acid) (Type-IV)
OIV-MA-AS4-02E Detection of preservatives and fermentation inhibitors
Type IV method
- Examination of dehydroacetic acid
1.1. Principle
Detection of preservatives and fermentation inihibitors (determination of ethyl pyrocarbonate) (Type-IV)
OIV-MA-AS4-02D Detection of preservatives and fermentation inhibitors
Type IV method
- Examination and determination of ethyl pyrocarbonate (diethyl dicarbonate)
1.1. Principle
Detection of preservatives and fermentation inihibitors (Detection of the monohalogen derivatives of acetic acid) (Type-IV)
OIV-MA-AS4-02C Detection of preservatives and fermentation inhibitors
Type IV method
- Detection of the monohalogen derivatives of acetic acid
1.1. Principle
Detection of preservatives and fermentation inihibitors (Detection of the following acids: sorbic, benzoic, p-chlorobenzoic, salicylic, phydroxybenzoic and its esters) (Type-IV)
OIV-MA-AS4-02B Detection of preservatives and fermentation inhibitors
Type IV method
- Detection of the following acids: sorbic, benzoic, p-chlorobenzoic, salicylic, phydroxybenzoic and its esters
Detection of preservatives and fermentation inihibitors (Fermentability Test) (Type-IV)
OIV-MA-AS4-02A Detection of preservatives and fermentation inhibitors
Type IV method
- Fermentability Test
1.1. Objective
Microbiological Analysis (Type-IV)
OIV-MA-AS4-01 Microbiological analysis of wines and musts- Detection, differentiation and counting of micro-organisms
Type IV method
Objective:
Simultaneous analysis of iron, copper, potassium, calcium and manganese in wines, using MP/AES (Type-IV)
OIV-MA-AS323-12 Simultaneous analysis of iron, copper, potassium, calcium and manganese in wines, using MP/AES (microwave-induced plasma atomic emission spectrometry)
Type IV method
- Scope of application
This Type IV method, based on nitrogen plasma atomic emission spectrometry, makes it possible to simultaneously determine the following elements in wines.