Purification of Lactic Acid Produced from Sugarcane Molasses Andrea Komesu, Patrícia F. Martins, Johnatt Oliveira, Betânia H. Lunelli, Rubens Maciel Filho, Maria Regina Wolf Maciel School of Chemical Engineering, University of Campinas (UNICAMP), Box: 6066, Zip: 13083-970, Campinas-SP, Brazil. Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo (UNIFESP), Zip Code: 099...

Now that high quality reserves are diminishing and quality specifications are becoming more strict, more processing is required to maintain quality standards. Additional environmental pressures have also reduced the attractiveness and cost effectiveness of the chemical based froth flotation process. As a result there has been a resurgence of interest in the purely physical processes of gravity ...

Natural products provide excellent potential leads for drug development because of their chemical diversity and biological functionality. However, the productivity of discovery of new, pharmacologically active natural products has traditionally been low due to inherent difficulties and costs associated with extract dereplication, i.e., isolation, purification and structure elucidation of indivi...

A purification strategy for rapidly obtaining recombinant human thyrotropin (rhTSH) was designed based on size exclusion and reversed-phase high-performance liquid chromatographic (HPLC) analysis, carried out on hTSH-secreting CHO cell conditioned medium. These analyses permitted the identification of the main contaminants to be eliminated. Considering that hTSH is highly hydrophobic and elutes...

1. Legislation and consequences. Federal Law for Preservation of Clean Air 1959, Technical Instructions 1964, Provisional Law 1965, Law for Protection from Ground Pollution; Smog Warning System. Monetary consequences. 2. Principal problems in the chemical industry. Characterization: manifold, non-uniform production; alterable products; modification of processes; temporary and quantitative fluct...