Date waste dietary fibers were examined as a hypolipidemic agent. Whit
e albino rats were fed on three experimental diets: I) high carbohydra
te diet free of fiber; II) and III) diets consisted of diet I substitu
ted with 100 g/kg of date waste dietary fibers cultured with Endomycop
sis fibuligera at zero time and after 60 h of culturing respectively f
or 8 weeks. The total lipids, total cholesterol, triglycerides and pho
spholipids in the liver of rats given diets II and III were significan
tly decreased over those rats fed the control diet throughout the feed
ing period (8 weeks). The highest decrease in content of all these par
ameters was produced by diet III. Comparing diets II and III with the
control diet I, total serum lipids and low density lipoprotein cholest
erol (LDL-cholesterol) were decreased by 32-48 %, while serum triglyce
rides and total cholesterol levels were lowered in the groups fed diet
s II and III by 23-35 % respectively. Concerning high density lipoprot
ein cholesterol (HDL-cholesterol), the decrease was only 2-6 % in rats
fed diets II and III. The highest decrease level was shown in the pho
spholipids content (51-56 %) during all of the experimental period (8
weeks).