Ronamy G. Orense, Monalisa C. Sunio, Juniecelle B. Tapales, Rowena E. Zabala (March 2001)
Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines
ABSTRACT
This One Group Pretest-Posttest Study in a Completely Randomized Design determined the feasibility of producing biodegradable plastic from the casein extracted through the centrifugation of carabao’s, cow’s, and goat’s milk. It also determined and compared the biodegradability of the plastic products from each milk source when buried in soil, immersed in water, and exposed to air. The independent variable in this study was the casein extracted from these milk sources while the dependent variable was the biodegradability potential of the plastic product buried in soil, immersed in water, and exposed to air. Nine strips of plastic products formed from each milk source were grouped into triplicate, initially weighed, then subjected to natural biodegradability testing for a week.