02552nam a2200253 a 4500 vtls000075089 KUKTEM 20251114204549.0 131007t2012 my da f m 000 0 eng d THE0004950(Local) 201905131540 SHAHRILJ 201311141201 nabilah 201310231019 nabilah 201310071514 nabilah 201310071511 nabilah UMP TP1180.B55 K435 2012 rs Bc. Mohd Khairul Nizam Baharudin Study the reaction mechanism of the production of novel biopolymer [poly (3-Hydroxybutyrate) (PHB)] from the palm oil seed / Mohd Khairul Nizam Baharudin Kuantan, Pahang : UMP, 2012 xiv, 60 p. : ill. ; 30 cm. + 1 CD-ROM Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang – 2012 Bibliography : p. 51-54 Poly(3-hyroxybutyrate) (PHB), is a biodegradable plastic that recognized as a potential alternative to substitute conventional petrochemical-based plastic. This biodegradable plastic is derived from bacterial fermentation using various carbon sources. Since the cost of carbon substrates has been identified as the major constrain in PHB production, inexpensive and renewable carbon substrate were currently investigated as alternative to conventional sugar-based substrate. Palm oil, massive-readily edible plant oil, may be an alternative substrate to conventional carbon source for PHB production. PHB is synthesized by Alcaligenes eutrophus in a production medium containing palm oil. Highest cell-dry weight was obtained by A. eutrophus when 20 g/L of palm oil and 0.6 g/L of urea were used. Cell-dry weight increased when the addition of starter inoculum volume increased up to 10 mL. Highest cell-dry weight was obtained at 48 to 60 hour of incubation. In a cell growth kinetic study, the total cell-dry weight obtained in presence of 20 g/L palm oil was greater than 12g/L and 16 g/L. Bacteria fermentation in the presence of 0.6 g/L urea shows greater total cell-dry weight compared to fermentation system without any addition of urea. This study proved that palm oil is a feasible and excellence carbon substrate for PHB biosynthesis by A. eutrophus. In this study, the evaluation of optimum condition for PHB biosynthesis by bacterial fermentation was accomplished. Biodegradable plastics Biopolymers Biodegradation 0 0 0 1 10000 10000 2019-09-04 0 TP1180.B55 K435 2012 rs Bc. 0000074901 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 10000 10000 2019-09-04 0 CD 7150 | TP1180.B55 K435 2012 rs Bc. 0000074902 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 4178 4184 VTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5020*5040*5200*6500*6501*9992