Objetivo. Evaluar en un diluyo-conservador liofilizado a base de Tris, el efecto la concentración Sero Albúmina Bovina (BSA) congelabilidad del semen caprino, sin realizar lavado seminal, comparado con control lactosa-leche descremada (DC), eliminando plasma seminal por centrifugación. Materiales y métodos. Se determinó 90 eyaculados, volumen, motilidad, concentración, viabilidad morfología esp...

In this study, the glutathione S-transferase enzyme (GST; EC 2.5.1.18) was purified with 8.35 EU/mL specific activity, 24.56 times 8% yield, from chicken liver, using ammonium sulfate precipitation and glutathione-agarose affinity chromatography. order to control purity of enzyme, SDS-PAGE performed a single band obtained. The molecular mass subunit calculated as approximately 30.9 kDa. additio...

1,2,3-Triaminoguanidinium chloride was combined with benzaldehyde and hydratropic aldehyde to furnish the corresponding tris(imines), which were converted into 1,2,3-tris(benzylamino)guanidinium salts by catalytic hydrogenation in the former, and by borane reduction in the latter case. The resulting alkyl-substituted triaminoguanidinium salts underwent a threefold carbamoylation with aryl isocy...

Background: Nowadays, cryoprotectant-free vitrification of human sperm in large or small volumes facilitated storage and use of human sperm for long time. However, this procedure was not successful in farm animals. The main finding in the studies is higher sensitivity of these kinds of sperm to sucrose osmolarities. Preliminary studies showed a reversible effect of sucrose on goat epididymal sp...

The reaction of ToMTl (ToM=tris(4,4-dimethyl-2-oxazolinyl)phenylborate) and CuBr2 in benzene at 60 °C provides ToMCuBr (1) as an entry-point into tris(oxazolinyl)phenylborato copper chemistry. ToMCuOtBu (2) ToMCuOAc (3) are prepared by the reactions with KOtBu NaOAc, respectively. is transformed (ToMCuOH)2 (4) through hydrolysis. NMR, FT-IR, EPR spectroscopies used to determine electronic struc...

Several bis- and tris-indole derivatives were isolated from a North Sea bacterium that was closely related to Vibrio parahaemolyticus (98% homology). 1,1,3-Tris(3-indolyl)butane (3) is a new compound, and 3,3-bis(3-indolyl)butane-2-one (1a), arundine (1b), and 1,1,1-tris(3-indolyl)methane (2a) were isolated from a microorganism for the first time here. Additionally, many other known compounds w...