Original scientific paper

Acids Extraction from Vegetable Oils for Acid Value pH-metric Determination without Titration

Elena Kardash-Strochkova ; National Physical Laboratory of Israel (INPL), Givat Ram, Jerusalem 91904, Israel
Yakov I. Tur’yan ; National Physical Laboratory of Israel (INPL), Givat Ram, Jerusalem 91904, Israel
Avi Shenhar ; National Physical Laboratory of Israel (INPL), Givat Ram, Jerusalem 91904, Israel
Ilya Kuselman ; National Physical Laboratory of Israel (INPL), Givat Ram, Jerusalem 91904, Israel

Abstract

Theoretical and experimental analysis of free fatty acids extraction from vegetable oils into a reagent containing triethanolamine for pH-metric acid value determination without titration was carried out. Practically complete extraction of the free fatty acids in the form of triethanolammonium salts was demonstrated. The obtained results allow to understand more possibilities of the pH-metric and other methods for acid value determination in different oils.

Keywords

acid value; vegetable oils; palmitic and oleic acids; dissociation constants; extraction

Hrčak ID:

103195

URI

https://hrcak.srce.hr/103195

Publication date:

28.11.2003.

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