PEROXIDE VALUE EFFECT ON DETERMINATION TOTAL TOCOPHEROL IN PALM OIL BY SPECTROPHOTOMETER

Yusuf, Yulizar and Zuki, Zamzibar and Astuti, Desy (2010) PEROXIDE VALUE EFFECT ON DETERMINATION TOTAL TOCOPHEROL IN PALM OIL BY SPECTROPHOTOMETER. In: Seminar dan Rapat Tahunan BKS-PTN Wilayah Barat ke-21, 10-11 May 2010, Universitas Riau.

	PDF (PEROXIDE VALUE EFFECT ON DETERMINATION TOTAL TOCOPHEROL IN PALM OIL BY SPECTROPHOTOMETER) - Published Version Available under License Creative Commons Public Domain Dedication. Download (359Kb)
	Postscript (PEROXIDE VALUE EFFECT ON DETERMINATION TOTAL TOCOPHEROL IN PALM OIL BY SPECTROPHOTOMETER) - Published Version Available under License Creative Commons Public Domain Dedication. Download (3727Kb)

Abstract

The study of peroxide value effect on determination total tocopherol in palm oil using spectrophotometric method was done. Peroxide value has been got by heating palm oil at 60'C with various times,0, 10, 20,30,40, and 50 minutes, and the peroxide value was determined by iodometric titration. Total tocopherol in palm oil was determined with Emmerie-Engel reagent, and the absorbance was occurred at 520 nm wave length. It is found that coefesien correlation (r) 0.9970: limit of detection (LoD) 0.7013 p"glmL : limit of quantitative (LoQ) 5.1252 p"glmL, and standar deviation (SD)7.25 x 10-3. Peroxide value that has got about 0.6366 mg ekiv alen/1000g to 6.8042 mg ekivalen /10009 and total tocopherol is about 0.066%. Based on variety analysis, it has been got Fh < Ft. So that it can be concluded that peroxide value until 6.8042 mg/ekivalen/lO00g does not effect determination of total tocopherol significantly. Keywords : palm oil, peroxide, tocopherol

Actions (login required)

View Item