000 02658nam a2200253 a 4500
001 vtls000075792
003 KUKTEM
005 20251114204553.0
008 131030t2013 my da f abm 000 0 eng d
020 _aTHE0002215(Local)
039 9 _a201905241012
_bshamsul
_y201310301403
_znabilah
040 _aUMP
090 _aQK495.O98 A37 2013 rs Bc.
100 0 _aSiti Aishah Muhmed
245 1 0 _aQuantification of bioactive compounds from Averrhoa Bilimbi /
_cSiti Aishah Muhmed
260 _aKuantan, Pahang :
_bUMP,
_c2013
300 _axv, 84 p. :
_bill. ;
_c30 cm. +
_e1 CD-ROM
502 _aProject paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang – 2013
504 _aBibliography : p. 58-60
520 3 _aAverrhoa bilimbi has been widely used in traditional medicine, thus, this fruits have received much attention because of its nutritional and antioxidant properties. The purposes of this study are to determine the bioactive compounds in averrhoa bilimbi and to study their optimum parameters during extraction. Antioxidant activity of the averrhoa bilimbi extract was determined based on 2,2-diphenyl-1-picrylhydrazyl freeradical (DPPH·), total phenolic content was measured using Folin–Ciocalteu reagent, while flavonoids is determined spectrophotometrically. Solvent extraction selected is methanol (50%) where this condition has yielded total flavonoids content is about 568.75 μg/ml QE. The highest antioxidant capacities measured is 80.02 % and total phenolic content shows about 175.3 mg/mL GAE.In this study, 60 minutes extraction time generally showed the highest effect on total flavonoids which is 496.25 μg/ml QE. Averrhoa bilimbi extraction had total phenolic about 164.7 mg/mL GAE and antioxidant activity is around 74.5%. 70° C extraction temperature shown the best extraction for total phenolics at 127.7 mg/ml GAE, while achieved highest total flavonoids at 656.25 μg/ml QE and the highest for DPPH radical scavenging activity is found about 70.05%. From the effect of agitation speed, 300 rpm achieved the highest value for total phenolics, total flavonoids and antioxidant capacity, DPPH which is about 193.3 mg/ml GAE, 717.75 μg/ml QE, and 77.03% respectively. Overall, based on the ideal extraction conditions chosen, optimum level of TPC, TFC and antioxidant capacity were obtained in averrhoa bilimbi fruit extract. The selected extraction conditions could be used for further studies and functional food product development.
650 0 _aOxalidaceae
650 0 _aExtraction (Chemistry)
999 _aVIRTUA40
_c4294
_d4300
999 _aVTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5020*5040*5200*6500*6501*9992