Tannins are a diverse group of plant phenolic compounds. Condensed tannins (CTs) represent major subgroup and were extracted from tilia (Tilia L.) flowers black locust (Robinia pseudoacacia) leaves. These extracts examined for their effects on the metabolic profile chicken caeca. By using in vitro, nuclear magnetic resonance (1H-NMR), which was combined with multivariate statistics, current stu...

Societal Impact Statement Trees are essential to life on earth—playing important economic, ecological and cultural roles. However, the world is facing a biodiversity crisis, be able effectively conserve tree species with limited funds, we need know which threatened. The Global Tree Assessment has addressed this gap in knowledge through accelerating production of International Union for Conserva...

The antennae of male Periplaneta americana acquire a large number of olfactory receptors at the adult stage. Electrophysiological methods (single unit and electroantennogram recording) show that a portion of the receptors added at the adult ecdysis are sex attractant receptors. Sex attractant receptors are not present in large numbers on larval and adult female antennae. The differentiation of ...

We n&asured leaf respiration in 18 eastern deciduous forest tree species to determine if there were differences in tempera i m-respiration response functions among species or among c opy positions. Leaf respiration rates were measured in situ an4 on detached branches fordcerpensylvanicum L., A. rubrum i., Betula spp. (B. alleghaniensis Britt. and B. renta L.), Caryq glabra (Mill.) Sweet, Cornus...

The Phora of Costa Rica were reviewed and three species, all belonging to Schmitz's Group III, were recognized: P. americana Schmitz and Wirth, P. truncata new species and P. paramericana new species. Of the three species, P. americana is by far the most abundant, with the other two species being rarely collected. All specimens were collected in the central highlands of the country. The previou...

The use of vegetal extracts requires toxicological and genotoxic evaluations to establish and verify safety before being added to human cosmetic, pharmaceutical medicine, or alimentary products. Persea americana seeds have been used in traditional medicine as treatment for several diseases. In this work, the ethanolic seed extract of Persea americana was evaluated with respect to its genotoxic ...