Milk fat; Detection of vegetable fat by gas-liquid chromatography of sterols (Reference method)
Описание (англ.):
The method consists in preparing of sterol digitonides and dissolving in a mixture of formamide and dimethylformamide, extraction of the liberated sterols with pentane, separation of the sterols using a suitable gas chromatograph. If, on the chromatogram, a peak with the retention time of beta-sitosterol is obtained, the presence of vegetable fat in the sample is demonstrated. Peaks of other phytosterols may support this conclusion.
Дата регистрации:
10.01.77
Дата введения:
01.12.76
Код КГС:
Н19
Код ОКСТУ:
9209;9222
Код ОКС(МКС):
67.100.10
Код ОКП:
9209;9222
Нормативные ссылки:
DIN 10336-2-1979, NEQ*DIN 10336-1994, NEQ
Ключевые слова:
CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DAIRY PRODUCTS DETERMINATION OF CONTENT FATS GAS CHROMATOGRAPHY GAS PHASE CHROMATOGRAPHY MILK REFERENCE METHODS STEROLS CHEMICAL ANALYSIS AND TESTIN