In an attempt to decrease hepatitis B antigen (HBsAg and HBeAg) in patient plasma, adsorption methond has been studied in vitro.Various adsorbents such as calcium phosphate, cationic ion exchanging resins, anionic ion exchanging resins, and several Brφnsted acid type adsorbents (silica-almina, white carbon and zeolite) were used in batch system.It was observed that acid type adsorbents such as calcium phosphate, cationic ion exchanging resins, silica-almina and white carbon were effective to the adsorption of HBAg in general. However, the adsorbent of very weak acidity (zeolite) and base type adsorbent (anionic ion exchanging resins) showed very or no effect on the adsorption of HBAg in general.It was also suggested that acidity of these adsorbents was very important for the adsorption activity for HBsAg and les so for HBeAg.
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