Tropical Journal of Pharmaceutical Research
Official Journal of Pharmacotherpy Group
  Home Pharmacotherapy Group African Journals Online  

Preliminary investigation into the use of Pleurotus tuber-regium powder as a tablet disintegrant

Magnus A Iwuagwu and Anthony O Onyekweli

Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, University of Benin, Benin City, Nigeria

Trop J Pharm Res, June 2002; 1(1): 29-37

Abstract Full-Text

Some physical characteristics of the powder obtained from the mycelia of a giant edible mushroom, Pleurotus tuber-regium, has been determined. Its disintegrant ability in comparison with maize starch BP was also investigated in paracetamol tablets prepared via the wet granulation method. The results obtained showed that P. tuber-regium and maize starch BP have similar true, bulk and tapped density values. The Pleurotus powder however, showed superior flow, swelling capacity as well as water retention capacity to maize starch BP. The swelling capacity was three times that of maize starch BP Tablets prepared with P. tuber-regium powder disintegrated faster than those prepared with maize starch BP at concentrations below 10% w/w. At the disintegrant concentration of 10% w/w paracetamol tablets made from both Pleurotus powder and maize starch BP had similar disintegration times and dissolution profiles. It is believed that the ability of Pleurotus powder to swell by over three times its volume in the presence of water may explain its disintegrant ability. Pleurotus tuber-regium powder may therefore be used as an alternative to maize starch BP as a disintegrant in tableting.

Key words: Pleurotus tuber-regium, physical characteristics, paracetamol.

To whom correspondence should be addressed. E-mail:
@2002. TJPR Faculty of Pharmacy, University of Benin, Benin City, Nigeria
Tel: +234 802 3360318 Fax: +234 52 602257 E-mail:
Last updated: August 2002