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008 131113t2013 my da f m 000 0 eng d
020 _aTHE0002153(Local)
039 9 _a201905131702
_byusri
_y201311131417
_znabilah
040 _aUMP
090 _aQD341.P5 H39 2013 rs Bc.
100 0 _aNorhayantie A. Rahman
245 1 0 _aTotal phenolic content and antioxidant activity of some Malaysian herbs /
_cNorhayantie A. Rahman
260 _aKuantan, Pahang :
_bUMP,
_c2013
300 _axvi, 69 p. :
_bill. ;
_c30 cm. +
_e1 CD-ROM
502 _aProject paper (Bachelor of Chemical Engineering (Biotechnology)) -- Universiti Malaysia Pahang – 2013
504 _aBibliography : p. 54-59
520 3 _aHerbs have drawn much attention of people worldwide, not only because of their economic value as food products, but also for their antioxidant compounds. Thus, this study was conducted to investigate the total phenolic content and antioxidant activities on three Malaysian herbs by using Soxhlet extraction method. The herbs were Eugenia polyantha (Serai kayu), Euodia redlevi (Tenggek burung) and Limnocharis flava (Sudu itik). The total phenolic content and antioxidant compounds were extracted using distilled water at three different extraction time (4, 8 and 12 hour). The extracts were then evaluated using Folin-Ciocalteu reagent for their total phenolic content and 2, 2-Diphenyl-1-picrylhydrazyl hydrate (DPPH) assay for their antioxidant compounds. Further analyzed was done using High Performance Liquid Chromatography (HPLC) to further verifying the ascorbic acid existence in the extracts. It was found L. flava showed the highest content of total phenolic compounds (15.01 mg gallic acid equivalent (GAE) per 1 g of sample) with the antioxidant capacity standing at 20.42 mg ascorbic acid equivalent (AAE) per 1 g of sample after 8 hour extraction. While, E. polyantha showed the highest value of antioxidant capacity (21.19 mg AAE/g) with total phenolic content of 9.99 mg GAE/g. In HPLC analysis, it was found that E. polyantha and L. flava after 8 hour extraction contained 0.7625 and 0.9745 mg AAE/g of ascorbic acid respectively.
650 0 _aPhenols
650 0 _aAntioxidants
650 0 _aHerbs
_zMalaysia
650 0 _aExtraction (Chemistry)
999 _aVIRTUA40
_c4107
_d4113
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