Karakteristik Morfologi dan Aktivitas Enzim Polifenol Oksidase dan Peroksidase pada Organ Tanaman Salak Sidempuan (Salacca sumatrana var. Sidempuan)

Abstract

This research has been done from January to August 2009 at the Genetics Laboratory of FMIPA USU, Central Research Molecular Biology of Palm Oil Marihat, Quantity Laboratory of Pharmacy Faculty USU, and Food Chemistry of Agriculture Faculty USU. The aim was to study “The Morphology Characteristic and Activities of Polyphenol Oxidase and Peroxidase Enzyme in Plant Organs of Sidempuan Salacca (Salacca sumatrana var. Sidempuan)”. The results showed that defense mechanism and protecting diseases occur in the plants. This research used method to study the activity of polyphenol oxidase (PPO) and peroxidase (PO) in leaves and stem of Salacca, protein determination, and the description of that plants. The results showed that the highest value of activities from Peroxidase is A 0,00456 from Huta Lambung village’s and the lowest is H 0,00283 from Sibakua village’s. The highest value of activities from Polyphenol Oxidase is D 0,00463 from Sibakua village’s and the lowest is B 0,00284 from Huta Lambung village’s. Physics factor from the two village showed the highest value of temperature, dampness and pH is from Sibakua village’s and the highest value of chemical factor from Huta Lambung village’s. From the results indicated that Salacca from Sibakua village’s is better than Huta Lambung.