The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Biological invasion of ballast water has been detected to be a great threat to marine ecosystem and human beings. However, so far less suitable method has been developed to obtain an effective, economic, safe, operational and clean onboard treatment method of ballast water. Hence porous ceramic filtration and UV radiation (PCF&UV) combination treatment is studied in the paper to propose a novel...
The present study was carried out to better understand the reactivity of nanoscale Ni/Fe particles towards the dechlorination of polychlorinated biphenyls (PCBs) contained in waste capacitor oil and the corresponding dechlorination mechanism in subcritical water. Batch experiments showed that nanoscale Ni/Fe particles could more quickly and effectively dechlorinate PCBs stepwise as compared to nanoscale...
Biodegradable polymer polycaprolactone (PCL; Mw~100,000) fiber mats containing shikonin from the plant Lithospermumerythrorhizon, widely known for its wound healing, anti-tumor, antioxidant, and anti-inflammatory properties, were prepared via electrospinning method. Incorporation of shikonin in the neat PCL solution did not affect the morphology of the resulting fibers, as both the neat and the shikonin-loaded...
The kinetic resolution of secondary alcohols catalyzed by Candidaantarctica lipase was studied using vinyl acetate as acyl donor in propylene carbonate. The effects of the reaction conditions included solvent, temperature, acyl donor and organic base. In the reactions, the enantioselectivity of Candidaantarctica lipase increased with increasing the reaction time and the addition of triethylamine...
Papain (EC 3.4.22.2) has been chemically modified using two reagents including different anhydrides of maleic and poly-maleic acids. The average ratio of modified-NH2 was tested by trinitrobenzenesulfonic acid (TNBS) method. The native and modified papain were purified by dialysis and their structures were characterized by FTIR. The factor related with the activity of the modified papain, such as...
Electrospun nylon-6 nanofibrous membrane with fiber diameters in the range of 50-200 nm were prepared and employed as affinity membrane material for papain adsorption due to their excellent chemical and thermal resistance as well as high wettability. In this work, covalent coupling of chitosan (CS) to activated nylon membrane was performed after the reaction of the nanofibrous nylon membrane with...
A facile enzymatic synthesis approach to prepare novel ester of ferulic acid through the lipase-catalyzed transesterification reaction of ethyl ferulate (EF) with tributyrin (TB) was investigated. The 1H NMR, 13C NMR and EI-MS analysis confirmed the formation of the end product, namely 1(3)-feruloyl-dibutyryl-glycerol (FDB). The influences of different enzyme source, enzyme loading, and water activity...
The application of cellulases in various industries demands highly stable enzymes, able to perform at extreme pH values and temperatures. In this study, the cellulase, which was immobilized on the chitosan-coated magnetic nanoparticles modified with alpha-ketoglutaric acid (alpha-KA-CCMNPs), exhibited a broader pH range of high activity and the loss of the activity of immobilized cellulase was lower...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.