Abstract
Plants are used to the treatment and prevention of many of
metabolic, degenerative and cardiovascular diseases. Obesity
is one of the most common metabolic diseases which is
considered one of the global health problems. The present
study aimed to screen anti-lipase effect of Portulaca oleracea,
Urtica urens, Brassica napus and Lathyrus hierosolymitanus
traditional Palestinian medicinal wild plants. Anti-lipase
activity was measured by using porcine pancreatic lipase
inhibitory test which was established by using the UV-visible
spectrophotometer method, while orlistat (anti-obesity drug)
was used as a positive control reference. The porcine pancreatic
lipase inhibitory effect for organic and aqueous extracts of Urtica
urens were 157 μg/ml and 157.1 μg/ml, respectively. While the
anti-lipase IC50 value for the organic extract of P. oleracea was
262.03 μg/ml. In addition, the aqueous extracts of Brassica napus
and Portulaca oleracea have anti-lipase activity with the IC50
values 296.87 μg/ml and 417.62 μg/ml, respectively. Meanwhile,
Lathyrus hierosolymitanus both aqueous and organic extracts
were almost inactive. The results showed that Urtica urens,
Portulaca oleracea, and Brassica napus have anti-lipase activity,
which provided evidence for their folkloric use as functional
food and medicine. These three plants could be used as antilipase
agents in the pharmaceutical and nutritional industries
or may be used as fatty food additives in order to decrease the
absorption and digestion of fats from food.