Extraction of laccase produced by L. polychrous in an aqueous two-phase system, composed of polyethylene glycol and phosphate salt at pH 7.0 and 25C was investigated. The effect of PEG molecular weight, PEG concentration and phosphate concentration was determined. Laccase preferentially partitioned to the top phase. Good extraction of laccase to the top phase was observed with PEG 4000. The opt...

This study aims to identify and analyze the band gap width of carbon phase produced from corncobs mixed with PEG-4000 see surface area corncob phase. First, characterization test was carried out using Scanning Electron Microscope Energy-Dispersive X-ray (SEM-EDX) spectroscopy determine morphology Ultraviolet–Visible (UV-Vis) carbon. Then, adding Polyethylene Glycol (PEG) 4000 at a specific conc...

A lot of people in the world choose rice as their main source carbohydrate beside maize and wheat. The increasing population make demand. Increasing demand doesn’t followed by supply. In order to solve that problem, researcher try find a new paddy cultivar which is can be planted dry area. This research aims study osmotic pressure still accepted var. Sintanur, LD50 (lethal dose 50) value especi...

The elastin-derived peptide val-ala-pro-gly (VAPG) may be useful as a biospecific cell adhesion ligand for smooth muscle cells. By grafting the peptide sequence into a hydrogel material, we were able to assess its effects on smooth muscle cell adhesion and spreading. These materials are photopolymerizable hydrogels based on acrylate-terminated derivatives of polyethylene glycol (PEG). Because o...

potentiometric investigation on {h2o+nano3+peg1500} mixtures were made at t=308.15k, using electrochemical cells with two ion-selective electrodes, (na+ glass) as the cation ion-selective electrode against (no3- solvent-polymer pvc) as the anion ion-selective electrode. the mean ionic activity coefficients of nano3 were measured at different concentrations of  nano3 and peg. maximum concentrati...

We report circular dichroism measurements on the helix-coil transition of poly(L-glutamic acid) in solution with polyethylene glycol (PEG) as a crowding agent. The PEG solutions have been characterized by small angle neutron scattering and are well described by the picture of a network of mesh size ξ, usual for semi-dilute chains in good solvent. We show that the increase of PEG concentration s...

Drought is one of the major stress factors affecting growth and development plants, responsible for considerable crop yield losses worldwide. An experiment was conducted to compare three rice (Oryza sativa L.) varieties (BRRI dhan49, BRRI dhan71 dhan75) drought tolerance based on some parameters physiological status in germination stage. imposed by five levels polyethylene glycol (PEG) (0%, 10%...

Micrometer scale “colloidal” particles that propel in a deterministic fashion response to local environmental cues are useful analogs self-propelling entities found nature. Both natural and synthetic active colloidal systems often near boundaries or located crowded environments. Herein, we describe experiments which measured the influence of hydrogen peroxide concentration dispersed polyethylen...

The selection of sieving polymer for RNA fragments separation by capillary electrophoresis is imperative. We investigated the separation of RNA fragments ranged from 100 to 10,000 nt in polyethylene glycol (PEG) and polyethylene oxide (PEO) solutions with different molecular weight and different concentration. We found that the separation performance of the small RNA fragments (<1000 nt) was im...

Polyethylene glycol (PEG) inhibited aggregation during refolding of bovine carbonic anhydrase B (CAB) through the formation of a nonassociating PEG-intermediate complex. Stoichiometric concentrations of PEG were required for complete recovery of active protein during refolding at aggregating conditions. For example, a PEG (Mr = 3350) to CAB molar ratio ([PEG]/[CAB]) of 2 was sufficient to inhib...