Utilization of Rice Husk Waste and Gliricidia to Pink Oyster Mushroom Production and Nutritional Content

¹ Department of Agrotechnology, University of Muhammadiyah Malang, Jl. Raya Tlogomas No. 246, Malang 65144, East Java, Indonesia
² Department of Materials and informatic, Interdisciplinary Graduate Schools of Agriculture and Engineering, University of Miyazaki, 1–1 Gakuen Kibanadai–nishi–Miyazaki, Japan
³ Department of Management, Faculty of Economics and Business, State University of Malang, Jl. Semarang No. 5, Malang 65145, East Java, Indonesia

^* Corresponding author: dian@umm.ac.id

Abstract

Pink oyster mushroom has economic value, non-cholesterol food source and high nutrition. Gliricidia leaves and rice husks are abundantly available in nature, but not utilized optimally yet. They contain nutrients for the growth and development of pink oyster mushrooms. This study aims to determine effect of gliricidia leaves and rice husks as additional supplements to growing media on the growth, yield, and nutritional content of pink oyster mushrooms. The study used completely randomized simple design consisting of six treatments, repeated four times. The treatments consisted of control, 150 g rice husk + 30 g gliricidia leaves; 120 g rice husk + 60 g gliricidia; 90 g rice husk + 90 g gliricidia; 60 g rice husk + 120 g gliricidia; 30 g rice husk + 150 g gliricidia. The data were analyzed using analysis of variance with F test. The results showed addition of gliricidia leaves and rice waste in form of rice husks as additional supplements to pink oyster mushroom growing medium was able to increase production by 2.2 times or 120 %; increase the nutritional value of mushrooms as indicated by an increase in protein, ash, and water content; and reduced fat content.