Antioxidant,Hypoglycemic and Hypolipidemic Activities of Sambucus williamsii Seed Oil

摘要

[Objectives]To explore the antioxidant activity of Sambucus williamsii seed oil.[Methods]DPPH scavenging method and Prussian blue method(total reducing power)were used.S.williamsii seed oil has antioxidant activity.In the DPPH scavenging free radical experiment,S.williamsii oil showed the ability to scavenge free radicals,and its scavenging ability had linear relationship with oil concentration(R=0.999 6).Besides,the IC 50 value of S.williamsii seed oil scavenging DPPH free radicals was 61.30±0.88 mg/mL.In the total reducing power measurement experiment,the S.williamsii seed oil has a reducing ability,and its reducing ability is proportional to the oil concentration,and has the concentration dependence.Through studying the inhibitory effect of S.williamsii seed oil on α-glucosidase,the hypoglycemic activity of S.williamsii seed oil was determined.The ability of samples to inhibit α-glucosidase was judged through measuring the absorbance at 400 nm of the reaction system.[Results]In the concentration range of 1.56-25.00 mg/mL,the S.williamsii seed oil can effectively inhibit α-glucosidase,and the inhibition rate was 62.66%-85.22%.The animal in vivo experiment was used to determine the hypolipidemic activity of the S.williamsii seed oil.First,a high fat modelwas established,S.williamsii seed oil was given through intragastric administration.Then,total cholesterol(TC),triglyceride(TG),high-density lipoprotein cholesterol(HDL-C),and low density lipoprotein cholesterol(LDL-C)were measured.Through comparison of high,medium and low dose groups of S.williamsii seed oil with the high fat modelcontrol group,it was found that the TC,TG,LDL-C levels were significantly decreased(P<0.01)and the HDL-C levels were significantly increased(P<0.05),indicating that S.williamsii seed oil can effectively reduce the levels of TC,TG,LDL-C in the serum of hyperlipidemic mice,and effectively inhibit the decrease of HDL-C level,thus S.williamsii seed oil can reduce blood lipids in mice,namely,has hypolipidemic effects.In addition,the greater the dose of S.williamsii seed oil,the more obvious the effect of blood lipid levels in mice,indicating that the hypolipidemic effect of S.williamsii seed oil was dose dependent.[Conclusions]S.williamsii seed oil has reducing ability,and there is a significant dose-effect relationship in the concentration range of 2-10 mg/mL.As natural plant oil,S.williamsii seed oil has the advantages of good stability,small toxic and side effects,and strong effect,and has high value of developing new antioxidants.