[Decolorization of chitin from Catharsius molossus discards].

Objective: Decolorization of crude chitin from Catharsius molossus was studied in order to prepare chitosan with white color and high viscosity.

Methods: Some factors affecting decolorization such as the kind of decolorant reagent, H2O2 concentration, pH, solid-liquid ratio, temperature and other factors were studied by single factor test and orthogonal design.

Results: The best decolorization process of chitin from Catharsius molossus was as follows:treated with 15 times of 15% H2O2 at 45 degrees C.

Preparation of melanin from Catharsius molossus L. and preliminary study on its chemical structure.

A great deal of melanin was found in the waste alkali liquor produced by extraction of chitin from Catharsius molossus L. Discarding the lye could harm the environment and cause waste of resources. In this paper, melanin from C.

[Preparation and preliminary characterization of chitosan from Catharsius molossus discards].

Objective: To study preparation and characterization of chitosan from Catharsius Molossus processing discards and explore the feasibility of utilization of insects residue.

Methods: Preparation technique of chitosan was studied by orthogonal design,and properties were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), etc.

Results: Preparation techniques were as follows: demineralizing: soaked for 30 min at 80 degrees C with 1.

[A review on liquid-filled hard gelatin capsules].

Novel dosage forms emerges more and more in recent years. One of them is liquid-filled hard gelatin capsules, which adopt gelatin or the hydroxypropyl methyl cellulose (HPMC) as capsule shell. The liquid-filled hard gelatin capsule is increasingly getting attention because of its new-concept dosage form design, which deliver liquid drugs by solid form.