Objective: Verify the anticoagulant effect in vitro and in vivo of Peruvian fruit and vegetable juice and identify the coagulation pathway on which it acts. Material and Methods: Extracted juices of Ananascomosus (L.) Merr, Citrus limonunRisso, Carica papaya L., Allium sativum L., Allium cepa L. and Zingiber officinale L. Roscoe. An in vitro study with human plasma and in vivo administering juice orally to rats for 14 days. Anticoagulant activity was evaluated by measuring the prothrombin time (PT) and partial activated thromboplastin time (APTT), the Fibrinogen was also determined. Results: In vitro juices of Ananas and Zingiber prolonged PT, Carica prolonged APTT and Citrus, Allium sativum and cepa prolonged both tests. In vivo, juices of Allium cepa and Carica prolonged PT, citrus prolonged APTT, and Anannas both tests. The juices of Anannas, Citrus, Allium sativum and Zingiber decrea...

We assessed the technique using free radical 2,2-diphenyl-1-picrilhidrazil (DPPH) used to determine the antioxidant capacity of foods and synthetic compounds; for that purpose this free radical has been used in concentrations between 0.037 and 0.2 mM, likewise, to perform this evaluation the catechin and epicatechin standards have been used in a concentration range of 6.67 x 10(-3) and 2.2 x 10(-2) mM. CI(50) values for both standards were dependent on the concentration of DPPH, having observed that the above value increases with increasing concentration of DPPH, for which reason it is suggested that all research use a single concentration of DPPH in the reaction medium.

Objective: To evaluate antidiabetic activity of water and ethanol extracts from Psidium guajava L. leaves in alloxan-induced diabetic rats. Material and Methods: Hyperglycemia was induced in albino rats by administering alloxan monohydrate (100 mg/kg i.p.). Water extract at a dose of 250 mg/kg was administered at a single dose, while ethanol extracts at doses of 250 and 500 mg/kg were also administered at a single dose. Blood glucose was determined two hours after administering the extracts. Results: The addition of water and ethanol extracts of Psidium guajava L. tended to decrease the blood glucose concentration. The water extract at a concentration of 250 mg/kg was found to be more potent than ethanol extracts with the lowest mean glucose concentration of 86.67 mg/dL two hours after it was administered. The effect of ethanol extract was only observed at the concentration of 500 mg/kg ...