جستجوی مقالات مرتبط با کلیدواژه "seed extract" در نشریات گروه "پزشکی"

Foeniculum vulgare Mill. seeds contain polyphenolic compounds which can be considered a suitable option for the green synthesis of nanoparticles.

In this study, the antibacterial activity against foodborne bacteria of ZnO nanoparticles synthesized from the aqueous extract of Foeniculum vulgare Mill. seeds was evaluated.

The synthesized ZnO nanoparticles were characterized using different analyses. The minimum inhibitory and bactericidal concentration of the nanoparticles were investigated against standard foodborne bacteria, S. aureus, Y. enterocolitica, E. coli O157:H7, and B. cereus, using the broth microdilution method.

UV-Vis spectroscopy analysis indicated an absorption peak at 231 nm which confirms the formation of ZnO nanoparticles. In addition, the X-ray diffraction pattern is consistent with the JCPDS cards, which also means the formation of ZnO nanoparticles. The results of the electron microscope revealed that the nanoparticles had a hexagonal shape with an average size of 50 nm, which is in agreement with the results obtained from the dynamic light scattering analysis. In addition, the minimum inhibitory concentration of ZnO nanoparticles against gram-negative and gram-positive bacteria, Y. enterocolitica, E. coli O157:H7, S. aureus, and B. cereus were 62.5, 62.5, 31.25 and 500 µg/ml, respectively.

ZnO nanoparticles synthesized from Foeniculum vulgare Mill. seed extract had an appropriate antibacterial effect against foodborne bacteria.

Peganum harmala is a plant that is traditionally used as an analgesic, anti-inflammatory, antibacterial, antioxidant, anti-helmintic, and antimutagenic agent. Moreover, it is used to treat a variety of human ailments, including depression. This study was conducted to investigate the antidiabetic activity of hydro alcoholic extract of this herb. A hydro alcoholic extract from seeds of this herb was prepared and administered at three doses of 30, 60 and 120 mg/kg to three groups of streptozotocin-induced diabetic rats. Two additional groups were used as negative (normal saline plus solvent) and positive control (metformin). Blood glucose levels in animals from all groups were measured at 2, 4, and 6 hours after intraperitoneal injection of the extract to rats. Blood glucose levels decreased in the diabetic rats in comparison with normal rats (P < 0.05). Our finding showed that P. harmala seed extract has good antidiabetic activity in streptozotocin-induced diabetic rats. Further studies need to isolate active compounds and to investigate their activity.

Nutmeg, Myristica fragrans Houtt, has shown anti-inflammatory properties in some studies. At present experimental study, we evaluated the effect of seed extract of nutmeg on adjuvant-induced arthritis in rats in comparison with flunixin meglumine. Experimental study was done in six groups of Wistar rats (each group 8 rats) as following: Group 1 was kept as control under similar conditions to other groups. All other rats received complete Freund''s adjuvant at dose 0.1 ml which injected under skin of foot. Group 2 was received vehicle (normal saline). Group 3 received flunixin intraperitonealy at dose of 2 mg/kg body weight of rats daily for 12 days. Group4 to 6 received extract of nutmeg at dose 100, 200 and 300 mg/kg intraperitonealy and daily for 12 days. Four rats in each group were anesthetized and blood collected for serum analysis on 12th day. The ankle joint prepared for histopathological examination. The remained rats were kept until 21th day. Levels of the cytokine TNF-α in serum was measured using ELISA kit. The serum levels of TNF-α in the group 2 were significantly increased; while nutmeg decreased the elevated TNF-α level in a dose-dependent manner but significantly with 300 mg/kg. The flunixin did not significantly decrease the levels of TNF-α. Nutmeg treated rats manifested pathological events in the ankle joints to a markedly lesser degree. Flunixin prevented pannus formation but it was ineffective in other lesions. Thus, nutmeg protected the joints against cartilage destruction and bone erosion in a dose-dependent manner.