The author wishes to acknowledge Marianito “Vhoy” Ramos for the worthy laboratory assistance and the University of the Philippines Manila for the support. Further, an appreciation for Cristan Agaceta, Evan Dykimching, Agnes Cayco, Geraldine Aclan, Kayla Baguio, Julius Marro Ramirez, Laila Mae Tahir for the collection and initial preparation of samples studied in this research, is extended. The author also wishes to acknowledge the efforts of Zharama Llarena for the final preparation for the analysis of the samples.