TY  - JOUR
T1  - Studies on <I>in vitro</I> Antioxidant Activity of Marine Edible Seaweed 
  From East Coastal Region, Peninsular Malaysia Using Different Extraction Methods
AU - Foon, Tam Siow AU - Ai, Lian Ai AU - Kuppusamy, Palaniselvam AU - Yusoff, Mashitah M. AU - Govindan, Natanamurugaraj 
JO  - Research Journal of Applied Sciences
VL  - 9
IS  - 3
SP  - 141
EP  - 146
PY  - 2014
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2014.141.146
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2014.141.146
KW  - Edible seaweeds
KW  -phenolic compound
KW  -extraction
KW  -DPPH
KW  -FT-IR
AB  - In this present study the antioxidant activity of two edible 
  seaweeds <I>Eucheuma cottonii</I> and <I>Padina</I> sp. were determined. The 
  two extraction methods such as conventional and soxhlet were used to extract 
  secondary metabolites by using methanol as a solvent medium. Total phenolic 
  content of crude seaweed extracts were analysed by standard method. The different 
  antioxidant assays 2,2-Diphenyl-1-Picrylhydrazyl (DPPH), Ferric Reducing Antioxidant 
  Power (FRAP) and &#946;-carotene bleaching assays were studied. The DPPH and 
  FRAP assays showed positive correlation with expressed higher total phenolic 
  content of methanolic seaweed extracts. Also, &#946;-carotene bleaching assay 
  lower activity compare with BHT as reference control. IR spectra showed the 
  phenolic related functional groups are present the seaweed extract. It mainly 
  responsible for higher rate of antioxidant activity. The methanolic extracts 
  of <I>Padina</I> sp. showed better radical scavenging and higher phenolic content 
  than <I>Eucheuma cottonii</I>. Also, the soxhlet extraction showed higher yield 
  and better radical scavenging activity compared to conventional method. Moreover, 
  the studies confirmed both seaweeds are an effective candidate for the control 
  the free radical scavenging activity.
ER  -