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020 _aTHE0004007(Local)
039 9 _a201905151038
_bfauzi
_c201108030948
_dFida
_c201107132306
_dVLOAD
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_dida
_y201002031449
_zida
040 _aUMP
090 _aTP156.E8 F57 2009 rs Bc.
100 0 _aMohd Firdaus Mustakim
245 1 0 _aSoxhlet extraction of ascorbic acid from guava /
_cMohd Firdaus Mustakim
246 3 _aSoxhlet extraction of ascorbic acid from guava
_h[computer file]
260 _aKuantan, Pahang :
_bUMP,
_c2009
300 _a51 p. :
_bill. (some col.) ;
_c30 cm. +
_e1 computer disc
502 _aProject paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2009
504 _aBibliography : p. 32-35
520 3 _aNatural antioxidant has gained interest among consumers and the scientific community due to their benefits as inhibitor cardiovascular disease and cancer. In this research, the extraction of antioxidants from guava with soxhlet extraction process has been studied. The effect of drying temperature, solvent polarity, and particle sizes of guava on extraction yields were investigated. Analysis of ascorbic acid content was performed using HPLC. The drying temperatures used were 32°C, 50°C, 60°C and 70°C. The solvents utilized were methanol, ethanol, hexane and pentane. In terms of particle, it was set at 1.0 mm, 3.0 mm, 5.0 mm and 10.0 mm. The results showed that the drying temperature at 50°C gave the highest yield of ascorbic acid which is 38.353mg/l, while using methanol as solvent yield 34.123 mg/l. It indicates that the relation between solvent polarities and yield of ascorbic acid were directly proportional. The particle size of guava was inversely proportional with the extraction yield of ascorbic acid where using 1.0 mm particle size gave 23.546 mg/l amount of ascorbic acid. This study indicated that natural antioxidant from guava has a big potential as an alternative source of antioxidant in order to replace the synthetic antioxidant in current market.
650 0 _aVitamin c
650 0 _aExtraction (Chemistry)
999 _aVIRTUA40
_c2648
_d2654
999 _aVTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5040*5200*6500*6501*9992