In order to investigate the characterizations of skin adsorption material (SAD) prepared from skin of corn stalks by High Boiling Solvent treatment, neutral proteinase and maltogenic amylase were selected as adsorbate to assess its potential applicability for enzyme immobilization. The structure of SAD and Skin were compared by FT-IR and XRD. The characterizations of the adsorption of the different enzymes onto SAD were studied. The isotherm of the maltogenic amylase was found to be linear with the Freundlich equation, and proteinase was found to be linear with the Langmuir equation in the studied concentration range. SAD could be applied the bio-active material and Skin to prepare SAD.
Abstract. Chitosan(CS) is the unique alkaline polysaccharide in nature, because of its perfect biocompatibility and degradability, it is widely used in medicine, soft release and control release. The betulinic acid is the derivative of betulin, it has many pharmacological activities, such as anti-inflammatory, antitumor, anti-malaria and anti-HIV. In this paper, the Span-80 was used as emulsifiers, the glutaraldehyde was used as crosslinker. With the method of orthogonal experiment, the preparation technology was optimized. The microspheres were characterized by SEM and its degree of crosslinking, drug-loading rate and encapsulation efficiency were tested at the same time.
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