Physico-chemical characteristics of cannabis seed oil (Cannabis sativa L.) from different varieties grown in the conditions of the Syrdarya region

Abstract

The article considers the physico-chemical composition of cold pressed hemp oil from different varieties to ensure food safety and choose the most promising variety for cultivation in the conditions of Syrdarya region. The content of cold pressing oil in technical cannabis seeds (Cannabis sativa L) from three different varieties of Felina 32, Santica 27 and Rodnik, grown in the Syrdarya region, ranged from 29.1% to 31.70%. The protein, ash and moisture content was 23.44-26.95, 4.95-6.10 and 7.66-8.10 per cent, respectively. Some other physico-chemical results were: moisture 0.10-0.13, iodine number 148-160; density (25°C) 0.9150-0.9250 mg/ml ; acid value 1.22-1.76 mg KOH/g; peroxide value 5.5-7.8 meq O2/kg. It has been found that the investigated fatty acids hemp oils contain Linoleic acid(C18:2((cis-9,12) 54.15-59.48%, palmitic acid(C16:0), Palmitoleic acid ((C16:1(cis-10), stearic acid (C18:0), Acid (Behc8:0), Acid (C20:20:0), Archicic acid (C1:20:0:0:0), Acid (C8:0:0:0:0:0:0:0:0:0:0:0:8:8:8:0) (C22:1(cis-22:1(cis-13)) и Lignoceric acid (C24:0): 5.85-7.82, 0.10-0.18, 2.78-3.25, 11.80-12.65, 0.55-0.86, 0.20-0.32, 0.02-0.09, и 0.085-0.15 %, respectively. Flavonoids, rutins, quercetin and gallic acid were found to be 0.1-0.8, 0.5-0.12 and 1.2-2.4 mg/l. The following elements of calcium(Cd), iron(Fe), magnesium(Mg), sodium(Na), zinc(Zn), cadmium(Cd), and mercury(Hg) have been identified as 1.1-1.8, 0.4-0.9, 0.3-0.7, 0.08-0.15, 0.06-0.11 mg/100g. The results of this analytical study compared to the results found in the literature on hemp oils showed that technical cannabis (Cannabis sativa L.) for Uzbekistan is a potentially valuable non-traditional oil crop.