January 11, 2016
Research and
Development Council
Youth for
Environment in School Organization
Rationale
The
school is one of the most high producers of waste paper in the community,
unfortunately these materials were not properly utilized in which in most
practice to get rid of these waste materials is through burning. Trust
International Paper Corp. (TIPCO) said that the rate of wastepaper recovery in
the Philippines is only 26 percent, the lowest among Asian nations, with Korea
ranked first (Enriquez, 2002). This is due to no diverse introduction as to how
to reutilize these materials into more beneficial products. The research and
development of the youth for environment in school organization have decided to
find solutions that may somehow regain the value of the waste papers in order
to produce a highly beneficial products.
White
Oyster Mushroom (Pleurotus ostreatus)
Production: Utilizing Cellulose Based Residues is a prototype experiment that
investigates the feasibility of utilizing waste papers to grow edible mushrooms. This experiment was done last March 1, 2012. Pleurotus ostreatus is an edible
mushroom that is not yet locally popular. This was chosen to be the experimental
fungi because it has this invasive characteristic. Spawn was solicited from
the Department of Agriculture. Health benefits, on the other hand, white oyster
mushroom shows great contribution in lowering cholesterol (Bobek, 1991). Research and Development Council of the YES-O
headed by the research adviser determined that the mycelium of the fungi shows
considerable inhibition of bacterial growth with absolute clearing within its
zone of inhibition 24 mm on average, which means no any other bacterial growth
observed inside and outside of the agar plate. Just recently, a laboratory test is done at the Institute of Chemistry at the University of the Philippines –
Diliman, white oyster mushroom shows sugar suppression activity,
alpha-glucosidase assays reveal that by organic extraction using ethanol white
oyster mushroom could inhibit 22% of the total enzymatic activity. This is
highly significant compared to the local herbs used to lower blood sugar for a
diabetic patient, but this is insignificant when it is compared to acarbose
that is used to inhibit enzymatic activity. It is then the road map of the
research and development of the YES-O to investigate the local type edible
fungi in the locality and to utilize paper as a substrate.
Why paper?
Paper is
a cellulose-based material which individual glucose (C6H12O6)
is being firmly connected by Beta 1,4 bond. Cellulose, therefore, is a sugar
polymer in which only a specific enzyme could act against the bond to allow
individual glucose units to break free from the chain and become an available
source of energy to some forms of living organisms. The council has
hypothesized that by applying thermal technique the cellulose becomes more
accessible to the fungi’s mycelia.
A Paper the substrate was thermally pre-treated for 45 minutes in boiling water then
allowed to cool. Excess water was allowed to drip off the paper until the desired
wetness achieved. Mushroom spawn was
placed at the center of the roll and was incubated for three weeks. Mushroom
mycelia cover the entire surface until small fruiting bodies appeared and
gradually developed into mature mushroom fruit body. The desired moisture and
humidity were artificially maintained to mimic the natural growing environment of
the fungi.
Initial Result
There is no additional nutrient added to the substrate
unlike to the other natural substrate like the rice straw that the nutrients of
the plant can be accessed by the mushroom mycelia. This perhaps is the reason why the mushroom
fruiting body cannot grow that much compared to the mushroom growing in the
natural substrate.
In this view, the research team planned to re initiate
the experiment utilizing available source of common nutrient requirements and
using again the paper substrate. Further analysis regarding on the mushrooms
bioactive compounds will be initialized when there’s enough fruiting body
produced.