Empty fruit bunches (EFB) were collected from an oil palm mill (FELCRA Nassaruddin Bota) at Perak. The
samples were then dried in an electrical oven for 24 h to moisture content below 10% and then grinded and passed
through meshed screen of 0.1-0.25 mm size. All samples were kept in an airtight container in order to avoid
moisture gain. The samples have been characterized and the basic characteristic of the sample is listed in Table 1.