Malang, IDN Times – During this time, waste money that is damaged or unused will be withdrawn by the bank for destruction. However, an interesting innovation using waste money was produced by five students of the State University of Malang. They modified the waste banknotes into a growing medium for oyster mushrooms.
The five students who produced these creations were Febriandari Annisa Murti, Muhamad Syaikhu Alam, Rani Dwi Lestari, Thoriq Aziz, Daffa’ Rizal. Waste paper money is considered to have better quality than existing planting media such as husks.
1. Waste paper money is good for planting media
2. Go through several processes before use
Waste of money that has been carried out in the process of taking cotton fiber for oyster mushroom growing media. IDN Times/Alfi Ramadana –
According to Febriandari, the processing itself goes through several stages. Initially, waste money had to go through pumping first. Then proceed with biodingking or the process of removing substances contained in waste money. Then the waste banknotes are soaked for 1-2 nights before they can be used for planting media. After going through this process, cotton fiber will be obtained from the waste.
“Later, the cotton fiber is mixed with cocopit, rice bran, lime and water. Then it is put into a container for oyster mushroom seedling seedling,” he added.
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3. The planting process takes three weeks
The process of mixing cotton fiber from waste banknotes with other materials for mushroom cultivation. IDN Times/Alfi Ramadana –
The seeding process itself takes about three weeks. After that, oyster mushrooms can be harvested and consumed. However, to be able to produce maximum mushroom harvest, the nursery process must be carried out in a sterile and clean place.
“Cotton fiber from this waste of money absorbs water faster. Then it also helps the mycelium to spread faster,” he continued.
Regardless, Febriandari admits that the most time-consuming process is the processing of waste money. The reason is to produce the best cotton fiber, processing waste money must be careful and done properly.
“For the processing of waste money, it requires a slightly complicated process. That is a bit of an obstacle,” he said.
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