Valorization of Waste Textile Dyeing by Immobilized Fungus Daedalopsis Eff. Confragosa in Sawdust

This study aims to determine optimal valorization of textile dyeing by immobilized fungus Daedalopsis Eff. Confragosa in sawdust as well as the quality of the valorization, which covers Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), Total Suspended Solids (TSS), pH, color, and level of toxicity. This fungus is obtained from plantation areas in Negara, Bali. Textile dyeing wastewater is taken from the Mama & Leon textile dyeing industry, Tabanan Bali. The optimum condition needed to process the dyeing waste is at pH 4 with eight days of incubation. Field-scale textile waste treatment in a reactor containing the immobilized fungus Daedaleopsis eff. confragosa in sawdust for eight days can reduce color, TSS, COD, and BOD by 79.78%, 779.11%, 88.307%, and 82.932%. Furthermore, textile waste processing results in a lower level of toxicity compared to the one before processing. The level of toxicity of wastewater before it is treated is mildly toxic. Meanwhile, the level of toxicity after treatment is non-toxic. Thus, a further study to test the result of the study on a large scale is important to ensure that this method is applicable for a practical purpose

Aktivitas Antioksidan Bunga Pacar Air Merah (Impatiens balsamina L.) dan Bunga Gemitir (Tagates erecta L.) dari Limbah Canang

Bunga pacar air (Impatiens balsamina L.) dan bunga gemitir (Tagates erecta L.) merupakan tanaman hias yang biasa digunakan dalam pembuatan canang di Bali. Antioksidan adalah parameter yang penting untuk memastikan kesehatan pada tubuh manusia. Telah dilakukan penelitian mengenai aktivitas antioksidan bunga pacar air merah (Impatiens balsamina L.) dan  bunga gemitir (Tagates erecta L.) dari limbah canang untuk mengetahui kandungan antioksidan yang dimiliki oleh bunga pacar air (Impatiens balsamina L.) dan bunga gemitir (Tagates erecta L.) dari limbah canang dengan melihat nilai IC­50 menggunakan DPPH sebagai sumber radikal. Hasil penelitian menunjukkan bahwa bunga pacar air merah (Impatiens balsamina L.) dan bunga gemitir (Tagates erecta L.) dari limbah canang memiliki aktivitas antioksidan yang lemah dan sedang dengan nilai IC50 secara berturut-turut adalah 327,01 ppm dan 118,68 ppm