Extracts from Erodium cicutarium L. (EC) and some standard substances present in EC extracts were tested for their antioxidative properties during Fe2+-induced triglyceride oxidation. Hydrophobic fractions such as petroleum ether (PEE), benzene (B E ) and chloroform I (ChE I) extracts as well as hydrophilic fractions i.e.
water (W E) and ethyl acetate (E A E ) showed an antioxidative effect. Among the tested substances vitamin C and some polyphenolic compounds; tannin, (+)-catechin and gallic acid exhibited antioxidative activity, stronger than the one of the mentioned extracts.
Saponins isolated from Medicago sativa L. appeared to stimulate lipolytic activity and did not influence amylolytic or proteolytic activity of Neopancreatinum (extract of pancreatic enzymes: lipase, proteases and amylases). Saponins isolated from the aerial part of Medicago sativa L. were demonstrated to stimulate lipase activity more effectively than saponins sepa rated from the root of this plant.When saponins were treated with 0.02 m HC1 at 37 °C for 1 hour their lipase stimulation ability did not change. The saponins stimulated Neopancreatinum lipolytic activity more in tensively in the presence of sodium cholate.
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