This study's goal was to reveal the effects of antioxidant supplementation on motility, motion characters, morphology, DNA integrity, and fertilizing potential cryopreserved bovine sperm. The ejaculates were collected from three Holstein bulls. At least ten per bull. immediately separated into five aliquots, diluted in Cryobos (Magapor Co. Ltd., Zaragoza, Spain) commercial extender, including 2...

b a c k g r o u n d & aim: the aim of the current study was to investigate the advantages of bayesian method in comparison to traditional methods to detect best antioxidant in freezing of human male gametes. methods  &  materials:   semen  samples  were  obtained  from  40  men  whose  sperm  had  normal criteria. a part of each sample was separated without antioxidant  as fresh and the remaini...

In this study, a sensing device employing gold-coated quartz tuning fork (QTF) modified with self-assembled monolayer (SAM) of L-cysteine was evaluated for the sensitive detection Cu2+ ions in aqueous solutions. Three copper (II) salts, CuSO4, CuCl2, and Cu(NO3)2, at four different concentrations (10−12, 10−10, 10−8, 10−6 M) small (100 μL) water sample amounts were each used as analytes to inve...

The effect of cysteine concentration and cysteine source [cysteine, methionine or 2-oxo-thiazolidine-4-carboxylate (OTC)] on the metabolism of [35S]cysteine was studied in isolated rat hepatocytes. Production of each of the major metabolites of cysteine (glutathione, sulfate, taurine) increased as cysteine or methionine, but not OTC, concentration in the medium was increased. At equimolar exoge...

pistachio green stink bug, acrosternum hegeeri, due to its inflicting damages on crop quantity and quality, is of a great economical importance in pistachio production. on the other hand, a knowledge of digestive enzymes, is quite indispensable in the study and application of new pest management technologies. results of studeies have shown that midgut in this insect is divided into four section...

objective: polyphenol oxidase or ppo (ec 1.14.18.1) is considered the enzyme responsible for quality deterioration and browning in different fruits during postharvest period. the objective of this study was to evaluate the antibrowning (inhibition of polyphenol oxidase activity) effect of cysteine, ascorbic acid, citric acid, kojic acid and glycine at two different ph (6 and 7) in  hawthorn. me...