Metatartaric acid (Type-IV)
OIV-MA-AS313-21 Determination of the presence of metatartaric acid
Type IV method
Sorbic, benzoic, salicylic acids (Type-IV)
OIV-MA-AS313-20 Determination of sorbic, benzoic and salicylic acid content in wine by the use of high-performance liquid chromatography
Type IV method
Organic acids and sulphates (capillary electrophoresis) (Type-II-and-III)
OIV-MA-AS313-19 Determination of the principal organic acids of wines and sulphates by capillary electrophoresis
Type II method (for organic acids)
Type III method (for sulphate)
Sorbic acid (capillary electrophoresis)
OIV-MA-AS313-18 Determination of sorbic acid in wines by capillary electrophoresis
Type IV method
- Scope
The present method is used to determine the sorbic acid in wines in a range from 0 to 300 mg/l.
Shikimic acid (Type-II)
OIV-MA-AS313-17 Determination of shikimic acid in wine by HPLC and UV-detection
Type II method
Organic acid : ionic chromatography (Type-IV)
OIV-MA-AS313-16 Determination of organic acids and mineral anions in wines by ionic chromatography
Type IV method
Preamble
The development of high performance ionic chromatography in laboratories has enabled the study the determination of organic acids and mineral anions in alcoholic and non alcoholic beverages by this technique.
pH (Type-I)
OIV-MA-AS313-15 pH
Type I method
Sorbic Acid (TLC) (Type-IV)
OIV-MA-AS313-14C Sorbic acid
Type IV method
- Principle of Methods
Identification of traces by thin-layer chromatography
Sorbic acid extracted in ethyl ether is separated by thin layer chromatography and its concentration is evaluated semi-quantitatively.
Sorbic Acid (GC) (Type-IV)
OIV-MA-AS313-14B Sorbic acid
Type IV method
- Principle of Methods
Determination by gas chromatography
Sorbic acid extracted in diethyl ether is determined by gas chromatography using an internal standard.
Sorbic Acid (spectrofluorimetry) (Type-IV)
OIV-MA-AS313-14A Sorbic acid
Type IV method
- Principle of Method
Determination using ultraviolet absorption spectrophotometry