Oil characteristics of Iranian walnuts

Abstract

Fatty acid composition, iodine value, refractive index, and saponification value of walnuts from six Iranian cultivars of Juglans regia grown in one region were determined. Results do not differ considerably, except for one cultivar. These data are compared with those reported in the literature for walnuts from other origins. Acidity and peroxide value of 4 and 9 month old walnuts also were determined. All samples had low acidity; but their peroxide values were rather high, and rancidity was organoleptically detectable in most cases. © 1974, American Oil Chemists’ Society. All rights reserved.