Cena s DPH / bez DPH
Sponsored link
sklademVydáno: 1983-04-29
BS 684-2.33:1983
Methods of analysis of fats and fatty oils. Other methods Detection and identification of antioxidants
Formát
Dostupnost
Cena a měna
Anglicky Zabezpečené PDF
K okamžitému stažení
4154 Kč
Anglicky Tisk
Skladem
4154 Kč
| Označení normy: | BS 684-2.33:1983 |
| Počet stran: | 8 |
| Vydáno: | 1983-04-29 |
| ISBN: | 0 580 11907 6 |
| Status: | Standard |
Popis
BS 684-2.33:1983
This standard BS 684-2.33:1983 Methods of analysis of fats and fatty oils. Other methods is classified in these ICS categories:
- 67.200.10 Animal and vegetable fats and oils
This International Standard specifies a thin-layer chromatographic method for the detection and identification of the following antioxidants in animal and vegetable fats and oils:
- nordihydroguairetic acid (NDGA)
- propylgallate (PG)
- octylgallate (OG)
- dodecylgallate (DG)
- tertiobutylhydroquinone (TBHQ)
- butylhydroxyanisole (tert-butyl-4-methoxyphenol) (BHA)
- α-tocopherol
- butylhydroxytoluene (2,6-di-tert-butyl-4-methylphenol) (BHT)
The antioxidants are listed in the order of their Rf values.
The detection of α-tocopherol is sometimes difficult as the spots of this antioxidant are of a generally diffuse aspect.
The method has limits of detection of 20 mg/kg (ppm) for BHT, and 10 mg/kg (ppm) for the other antioxidants. It should be noted that BHT is not completely isolated by this method.
Describes thin-layer chromatography for nordihydroguairetic, propylgallate, octylgallate, dodecylgallate, tertiobutylhydroquinone, butylhydroxyanisole, α-tocopherol and butylhydroxytoluene.