Current Organic Chemistry - Volume 21, Issue 2, 2017

In the last quarter century, immobilization of lipases has rapidly grown into a field of converging knowledge on material science, chemical engineering, biochemistry, etc. The majority of the cumulative work on lipase immobilization has been done on silica (Si) based supports. Researchers have investigated the effect of different Si architectures such as monolith, particles and aerogels on the properties of the i Read More

The esterification is well-established type of reaction in organic synthesis used for manufacturing various valuable esters used prevalently as ingredients of food, skincare products, pharmaceuticals and fuels. In recent decades biocatalytic synthetic routes based on using enzymes as catalysts have received a lot of attention in scientific researches and industry. Main advantages of enzymatic esterifications are high sel Read More

The use of enzymes in food processing represents a historically well-established approach that gets its deepest roots in thousands of years BC. In fact, even in an unconscious way, the mankind always applied enzyme- based bioprocesses for example in beer brewing, bread baking, and cheese and wine making. Nevertheless, throughout the centuries, process improvement or design and implementation of novel approaches has Read More

Due to their physiological and functional properties, novel fructooligosaccharide (FOSs) and levan production has gained significant interest. Levansucrase (EC 2.4.1.10, LS), a glycosyl transferase, catalyzes the transfer of fructose from a non-activated sucrose donor, to an acceptor molecule, typically via a β-(2-6)-glycosidic bond. Significant prebiotic products of LS-catalyzed transfructosylation reaction include β-(2-6 Read More

Cyclodextrins are cyclic oligosaccharides constituted by glucopyranose units linked by -(1,4) bonds that show a characteristic donut shape with a hydrophobic cavity and a hydrophilic outer surface. Cyclodextrins are capable of forming water-soluble host:guest complexes with lipophilic molecules that hide in the their cavity. The aim of the review is to describe the historical background, the structure and proprieties of na Read More

The present study describes the selective halogenation at the β- or meso-position of the porphyrin macrocycle. The reactions of deuteroporphyrin IX dimethyl ester, mesoporphyrin III dimethyl ester and their Cu(II) and Ni(II) complexes with N-bromosuccinimide or phenylselenyl chloride were investigated. It could be observed that when the bromination of deuteroporphyn IX dimethyl ester using NBS took place, the isolated pro Read More

Background: 1,2,4-Triazine is a prominent structural core system present in numerous natural and synthetic biologically active compounds. The existing synthetic methodologies have mostly focused on 3,6- disubstituted-1,2,4-triazines and 3,5,6-trisubstituted-1,2,4-triazines. However, until now only a few methods have been developed for making 3,5-disubstituted-1,2,4-triazines. Objective: The primary objective of the study Read More