The physical characteristics and yield of grey oyster mushroom (Pleurotus sajor-caju) cultivated on sawdust and sago hampas as substrate

Michelle Ngassy, Mering and Mohamad Hasnul, Bolhassan and Dayang Salwani, Awang Adeni (2022) The physical characteristics and yield of grey oyster mushroom (Pleurotus sajor-caju) cultivated on sawdust and sago hampas as substrate. Asia Pacific Journal of Molecular Biology and Biotechnology, 30 (2). pp. 44-53. ISSN 0128-7451

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Abstract

In Malaysia, sawdust is widely used as a substrate for the cultivation of grey oyster mushrooms (Pleurotus sajor-caju). Due to the scarcity and increasing cost of sawdust, this research investigated the feasibility of employing sago hampas as an alternative substrate for the cultivation of P. sajor-caju. In Sarawak, sago hampas were discarded into the river together with wastewater or incinerated, causing water and air pollution. In this study, P. sajor-caju was grown in five different formulations which are 100% sawdust (100SD) as control, 100% sago hampas (100SH), 75% sawdust + 25% sago hampas (75SD:25SH), 50% sawdust + 50% sago hampas (50SD:50SH), and 25% sawdust + 75% sago hampas (25SD:75SH). The substrate was mixed with rice bran and calcium carbonate at a dry matter basis in the ratio of 100:10:1. For the biological efficiency, 50SD:50SH recorded the highest yield (115.07%) compared to singular substrate 100SD (19.52%) and 100SH (37.04%). The higher lignin content and moisture-holding capacity in 100SD might not give better physical characteristics of P. sajor-caju. At the end of the study, supplementation sawdust with sago hampas especially formulation 50SD:50SH is recommended as the best formulation to reduce sawdust and utilise sago hampas as an alternative substrate for P. sajor-caju.

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