Objective: The purpose of the study was to formulate and evaluate sintered gastro retentive tablets Vildagliptin using design experiments. Methods: Direct compression is process by which are compressed from powder mixture API suitable excipients done an automatic punching machine 6 mm punch. Prepared were kept in hot air oven at three different temperatures 50°C, 60°C, 70°C for periods 1, 2, 3 ...

Deposition of wax on a cold surface is a serious problem in oil production. Progress in developing more effective wax inhibitors has been impeded by the lack of an established mechanism connecting the molecular structure to inhibitor efficiency. Some comb-like polymers having long alkyl side chains are known to decrease the rate of wax formation. Among several possible mechanisms, we investigat...

Cuticular wax deposition and composition affects drought tolerance and yield in plants. We examined the relationship between wax and dehydration stress by characterizing the leaf cuticular wax of tree tobacco (Nicotiana glauca L. Graham) grown under periodic dehydration stress. Total leaf cuticular wax load increased after each of three periods of dehydration stress using a CH2Cl2 extraction pr...

The Corn an important role in agriculture, and can be used both human animal food, production of ethanol, medicines glue. However, is verified cultivation practices soil inappropriate management have led to deterioration. Thus, the importance vegetation cover incorporation organic matter these cultivated soils. objective this work was evaluate effect Carnauba bagana maintained on as mulch incor...

Wax monoesters are synthesized by the esterification of fatty alcohols and fatty acids. A mammalian enzyme that catalyzes this reaction has not been isolated. We used expression cloning to identify cDNAs encoding a wax synthase in the mouse preputial gland. The wax synthase gene is located on the X chromosome and encodes a member of the acyltransferase family of enzymes that synthesize neutral ...

Cuticular waxes act as a protective barrier against environmental stresses. In the present study, we investigated developmental and genotypic variation in wax formation of cabbage lines, with a view to understand the related morphology, genetics and biochemistry. Our studies revealed that the relative expression levels of wax biosynthetic genes in the first-formed leaf of the highest-wax line r...

Montan wax origins from ancient plant which leads a long and slow way towards becoming lignite thousands of years ago, their composition is very complex. Crude montan wax is obtained after organic solvent extraction from lignite, then deresined wax is acquired by cooling the extracted solvent toluene, last refined wax called S wax could be made after a series oxidation process, which can be use...

Heavy organics deposition is a common problem in oil industry, especially in oil production, transportation and processing. Wax or solid paraffin series are examples of heavy organics that deposit. Precipitation and crystallization of wax causes major difficulties in different processes. Based on multi-solid theory, a basic model is modified in this paper for wax precipitation in different oils...

Carnauba (Copernicia prunifera (Mill.) H.E. Moore) is a fruit of the Brazilian Caatinga and Cerrado regions. It has good nutritional characteristics, bioactive compounds, antioxidant activity. However, some processing techniques can affect its chemical characteristics. This study aims at evaluating effect freezing freeze-drying on compounds activity carnauba pulp. The pulp was submitted to thre...