Abstract

EXTRACTION AND EVALUATION OF IV (WIJS METHOD) USING MERCURIC ACETATE AS ACCELERATOR OF GROUNDNUT VARIETIES OF EXTRACTED OILS

*Dr. Shashikant Pardeshi

ABSTRACT

In the present research work, use of mercuric acetate catalyst, and the absorption reaction time has been reduced to 3 min. It is the purpose of this paper to present a rapid method for estimation of unsaturation of oils. An attempt has been made to reduce the time of the Wijs method by use of mercuric acetate as a catalyst/accelerator.a rapid method is used for the measurement of iodine value, wherein mercuric acetate is directly used in the powder form. The iodine value of different extracted groundnut oils of different variety such as Joytigangapuri (Jg), Phule Pragati-JL-24 (PP-Jl-24) Kopargaon4-11 (K4-11), Sv-11, Ak -12 -24, Tg 24, Tg -1, Tg 1, Tg -17 and K 17 and K17 and K 17 and K-1 were determined by regular Wijs method for 30 minutes whereas when we apply catalytic Wijs method with use of 2 mg, 5 mg and 10 mg of mercuric acetate to perform as catalyst then it is reducing the time of analysis to 3 minutes. When catalyst is used the different values obtained for coefficient of variations are 0.37 for 2mg, 0.36 for 5mg and 0.27 for 10 mg whereas 0.1 for non-catalyst addition. The results obtained in the present work shows K4-11 have more % difference in IV in case of 2mg. The standard mean error is in the range of 0.1 -0.18.

Keywords: different groundnut seed varieties, extracted oils, Wijs method, IV (Iodine Value), mercuric acetate.