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008 100205t2009 my a f m 000 0 eng d
020 _aTHE0004339(Local)
039 9 _a201905161023
_brohana
_c201108030913
_dFida
_c201107132306
_dVLOAD
_c201002081447
_dkam
_y201002051301
_zkam
040 _aUMP
090 _aTP248.B55 N87 2009 rs Bc.
100 0 _aNurul Nadiah Manap
245 1 0 _aScreening of variables relevant to biomass yield and biopolymer yield in shake-flask fermentation for biopolymer /
_cNurul Nadiah Binti Manap
246 3 _aScreening of variables relevant to biomass yield and biopolymer yield in shake-flask fermentation for biopolymer
_h[computer file]
260 _aKuantan :
_bUMP,
_c2009
300 _a30 p. :
_bill. ;
_c30 cm. +
_e1 computer disc
502 _aProject paper (Bachelor of Chemical Engineering (Biotechnology)) -- Universiti Malaysia Pahang - 2009
520 3 _aThe production of biodegradable polymer poly (3-hydroxybutyrate) can be done by the bacteria Cupriavidus necator under depletion of nitrogen source and excess source of carbon. In this research, screening of variables which are involved in the production of PHB was done. The experiment was focusing on determining which variables do not give significant effect toward the production of PHB. The significant effect for each variable which are the agitation rate, temperature, glucose, peptone, di-sodium hydrogen phosphate, ammonium sulphate, magnesium sulphate and potassium di-hydrogen phosphate were analyzed by using the factor analysis method.Linear models were used to describe the yield as the dependent variable in terms of factors as the independent variables. Starting with the factor corresponding to the smallest eigen values and proceeding with factors corresponding to successively bigger eigen values, factors were dropped and the mean square error of the resulting linear model is compared with the mean square error of the full model using the F test. For the linear regression involving uncorrelated variables for biomass yield, concentration of di-sodium phosphate and potassium dihydrogen phosphate respectively gave significant effect toward the yield. In addition, for biopolymer yield, the concentrations of peptone, ammonium sulphate, di-sodium hydrogen phosphate and potassium dihydrogen phosphate respectively give a significant effect toward the yield.
650 0 _aBiomass chemicals
650 0 _aBiopolymers
999 _aVIRTUA40
_c683
_d689
999 _aVTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5200*6500*6501*9992