Rommel Jun Payba, Michael Roland Tiongson ( February 1999 )
Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines
ABSTRACT
The lack of more economical and environment friendly ink products available on the market brought about this research. This research aims to provide a suitable alternative ink colorant to more expensive and less ecological inks through the use of leaf extracts from the eucalyptus tree.
The ink colorant was produced by grinding the eucalyptus leaves and filtering out the juice. The LPC ( leaf protein concentrate ) was taken from the juice by allowing it to coagulate through heating.
The LPC was then tested by mixing with different solvents at different concentrations such as acetone and ethyl alcohol. Results show tht acetone worked best at 50% concentration.
The experimental ink was compared to a commercial brand by a group of judges ( random ), and the results show that the ink has yet to undergo more testing and experimentation in order for it to have a significant impact on the ink market.