during the past two decades, the use of bioplastics as an alternative to regular plastics has received much attention in many different industries. the mechanical and degradable properties of bioplastic are important for their utilization. in this research cellulose of wheat straw and glycerol were mixed by different weight ratios and then reinforced by using date palm fibers. to prepare the bi...

Basic hydrolyses carried out on the glycopeptide antibiotic teicoplanin or its acidic hydrolysis products give rise to epimeric species which retain little antibiotic activity. The detailed structure of a sample epimer has been determined using 1H NMR spectroscopy.

slurries of rice-straw cellulose (obtained by delignification and removal of hemicelluloses from the powdered raw material) were subjected to ultrasonic waves at different intensities for various times (constant temperature). susceptibility of the samples to cellulose-hydrolysis increased initially with pretreatment time, reaching a maximum or a constant level thereafter. maximum glucose yield ...

In this research, (Carboxy-3-oxopropylamino)-3-propylsilylcellulose (COPAPSC) as an organocatalyst, has been synthesized by grafting of succinic anhydride on the NH2-modified cellulose (cellulose functionalized with 3- aminopropyltriethoxysilane). The –CO2H group-functionalized cellulose (COPAPSC) is used as a catalyst for the synthesis of coumarin derivatives from the reaction of phenolic subs...

in order to formulate an efficient and durable mucoadhesive drug delivery system, careful consideration of formulation-related parameters is critical. this study was conducted to investigate the effect of the presence of various types and concentrations of surfactants within or outside carbopol 934 (c934) as well as hydroxypropylmethyl cellulose (hpmc) solid compacts, on their duration of mucoa...

The first stage to have access to a reservoir is the drilling operation. The proper development of this operation plays a major role in increasing productivity. It must be pointed out that the drilling fluid (mud) is pivotal in achieving this objective. Among these fluids, water-based fluids are the most common ones, which have been utilized to drill approximately 80% of all wells and are m...

The purification of the lignin peroxidase from the juice of Musa paradisiaca stem using a simple procedure involving concentration by ultrafitration and anion exchange chromatography on DEAE cellulose column has been reported.The enzymatic properties of the purified enzyme have been found to be similar to the enzymes reported from the fungal sources.

Present paper examines the effect of acid type and hydrolysis conditions on morphology, size, yield and crystallinity of produced cellulose nanocrystal (CNC). Cellulose obtained from waste office paper was hydrolyzed under the same conditions by Maleic acid (MA) and Sulfuric Acid (SA) in separate treatments.  Also this cellulose was hydrolyzed under different timing and temperature by MA and SA...