The information generated in this study shows the potential utilization of waste banana stalks as fiber resource for handmade paper by an environment-friendly protocol. Here, instead of using chemicals like caustic soda and acid in cooking the material to produce pulp, it utilized an edible fungi, Pleurotus sajor caju, to delignify the material and render the cellulosic fibers available for handmade paper making. The information also showed the potential of producing mushroom using BS even without the normal additives of a conventional mushroom substrate.
Banana Stalk-Pleurotus (BSP) Protocol in Handmade Paper Making
Material and Substrate Preparation
The DOST conventional composition for mushroom substrate was followed: sawdust – 4500g; sugar – 45g and lime – 45g (1% of the main substrates) and rice bran – 900g (20% of the main substrate).
Percent composition of the experimental substrates using banana stalk (BS) was based on the conventional substrate composition.
Sterilization, inoculation and myceliation set up was carried out in MAIS-TESDA, Marcos, I.N. Bio-pulp and handmade paper production was done at FPRDI, UPLB.
Handmade Paper Making
The blended pulp with the desired consistency was placed into the basin. In stock preparation, consistency refers to the amount of pulp mixed with a known amount of water. This is in kilogram pulp per liter of stock in the basin. Usually thin paper requires 0.5%4.5% pulp and 1.6%-2.5% pulp for thick sheets.
Comparison between conventional and the BSP Protocol
Parameters : Conventional : BSP Protocol
- Material preparation : Mechanical pounding : None
- Chemical pulping : 15-70% caustic soda : None
- Washing, rinsing time : more time : lesser
- Disintegration & beating : needed : needed
- Bleaching / drying : optional : optional
- Stock preparation : standard : standard
- Sheet forming & couching: standard : standard
- Pressing : needed : needed
- Air drying : needed : needed
- Myceliation appears 3 days after inoculation. BS substrates performed comparably with conventional substrate.
- Pleurotus sajor caju effected 37.77 to 40% delignification in BS substrates.
- The BSP+PBSSL and conventional substrate consistently showed comparable myceliation all throughout the myceliation period.
The economic profitability of using banana stalks and the P. sajor caju protocol will depend on the targeted rate of handmade paper production. Using Pleurotus as delignifying agent in handmade paper making, gives a fanner a gross margin of PhP 4,319.64 from a 4.5 kg banana stalks in two months time.
Growing Pleurptus for mushroom production only gives a gross of PhP 642.15. Integrated use of BS for mushroom and handmade paper gave a gross margin of only PhP 369.33.
Download the full article at www.ijser.org/researchpaper/Handmade-paper-from-banana-stem.pdf
For more information, contact:
MMSU – Biology Dept.
City of Batac, Ilocos Norte