1 Results Biotransformations are enzyme- and whole cell-catalysed conversions of non-natural substrates to products.They are important tools in organic synthesis,especially for the syntheses of chiral molecules,where ...1 Results Biotransformations are enzyme- and whole cell-catalysed conversions of non-natural substrates to products.They are important tools in organic synthesis,especially for the syntheses of chiral molecules,where the reactions catalysed may be asymmetric syntheses or the resolution of racemates.The main advantages associated with the use of single enantiomer compounds are increased specificity and the avoidance of adverse side effects[1].Whole cell reactions are advantegous over enzyme-catalyzed rea...展开更多
There was an obvious relationship between seed testa structure, storage material and resistance to A. flavus of peanut. Results showed that seed testa of peanut germplasm with high resistance （HR） to A. flavus infec...There was an obvious relationship between seed testa structure, storage material and resistance to A. flavus of peanut. Results showed that seed testa of peanut germplasm with high resistance （HR） to A. flavus infection had thicker wax layer, integrated and tight epidermis layer, regular vascular tissue range. However, the seed testa of peanut germplasm with high sensitivity （HS） to A. flavus had the reverse results, and results of those with medium resistance （MR） to A. flavus lay in between, but changes of testa thickness were not significant among different resistance kinds. Results also showed that some seed storage materials were closely related with resistance potential to A. flavus. It seemed that varieties with higher resistance to A. flavus had higher oleic acid and protein content, lower linoleic acid and fat content. Content of palm acid, total sugar and VE did not show positive relationship with the resistance to A. flavus.展开更多
Biogenic synthesis of inorganic nanoparticles has been emerging as an important branch of nanobiotechnology.Biogenic silver nanoparticles(AgNPs)are proved to be potential antimicrobial agents against an array of patho...Biogenic synthesis of inorganic nanoparticles has been emerging as an important branch of nanobiotechnology.Biogenic silver nanoparticles(AgNPs)are proved to be potential antimicrobial agents against an array of pathogens.Aqueous extract of shade dried leaves of Conyza ambigua was used for the synthesis of AgNPs.The UV-VIS absorption spectroscopy,SEM,XRD were carried out to assess the formation AgNPs.SEM image divulges that AgNPs are quite polydispersed,the size ranging from 56 nm.The above AgNPs were effective against A.niger,A.flavus and Sclerotium rolfsii.This study move towards biogenic synthesis of AgNPs using dried biomass appears to be cost effective,eco-friendly to that of conventional methods of nanoparticles synthesis.展开更多
文摘1 Results Biotransformations are enzyme- and whole cell-catalysed conversions of non-natural substrates to products.They are important tools in organic synthesis,especially for the syntheses of chiral molecules,where the reactions catalysed may be asymmetric syntheses or the resolution of racemates.The main advantages associated with the use of single enantiomer compounds are increased specificity and the avoidance of adverse side effects[1].Whole cell reactions are advantegous over enzyme-catalyzed rea...
文摘There was an obvious relationship between seed testa structure, storage material and resistance to A. flavus of peanut. Results showed that seed testa of peanut germplasm with high resistance （HR） to A. flavus infection had thicker wax layer, integrated and tight epidermis layer, regular vascular tissue range. However, the seed testa of peanut germplasm with high sensitivity （HS） to A. flavus had the reverse results, and results of those with medium resistance （MR） to A. flavus lay in between, but changes of testa thickness were not significant among different resistance kinds. Results also showed that some seed storage materials were closely related with resistance potential to A. flavus. It seemed that varieties with higher resistance to A. flavus had higher oleic acid and protein content, lower linoleic acid and fat content. Content of palm acid, total sugar and VE did not show positive relationship with the resistance to A. flavus.
文摘Biogenic synthesis of inorganic nanoparticles has been emerging as an important branch of nanobiotechnology.Biogenic silver nanoparticles(AgNPs)are proved to be potential antimicrobial agents against an array of pathogens.Aqueous extract of shade dried leaves of Conyza ambigua was used for the synthesis of AgNPs.The UV-VIS absorption spectroscopy,SEM,XRD were carried out to assess the formation AgNPs.SEM image divulges that AgNPs are quite polydispersed,the size ranging from 56 nm.The above AgNPs were effective against A.niger,A.flavus and Sclerotium rolfsii.This study move towards biogenic synthesis of AgNPs using dried biomass appears to be cost effective,eco-friendly to that of conventional methods of nanoparticles synthesis.
