Pengaruh Derajat Keasaman (pH) Media Tanam dan Waktu Panen pada Fortifikasi Selenium Jamur Tiram Putih (Pleurotus ostreatus)

Abstract

White oyster mushroom (Pleurotus ostreatus) is a very popular  food. Selenium is one of  the essential micro­nutrients for human. The intake of selenium is low. The aim of  this research is to analyze some factors  that affect to selenium fortification on white oyster mushrooms. White oyster mushrooms are saprophytic plants that absorb their food from their growing media, so the growth periode and  their fruit body content is influ­enc­ed by the composition and the acidity (pH) of  their growing media. This paper describes about the effect of acidity (pH) and the harvesting time on the selenium content of oyster mushroom. From the results, we conclu­d­­ed that  the most rapid growth of mycelium occurred on the oyster mushroom that  grown on growing media with pH 8. The selenium content of mushroom fruit body are influenced by their mycelia growing period, the oyster mushroom that grown on growing media with pH 6 had the highest selenium content ,and  there is sig­ni­ficant difference between the content of selenium of the mushroom fruit body that collected from the first and second harvesting time.