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Author Plernchai Tangkanakul
Alternative Author Gassinee Trakoontivakorn
Kasetsart Journal Natural Science
TitleLipophilic and Hydrophilic Antioxidant Capacities of Vegetables, Herbs and Spices in Eighteen Traditional Thai Dishes
ImprintVol. 48 No. 2, March - April 2014
Call# FOOD 7911

CALL # Volume Number Month Year Barcode Status

AbstractA selection of 18 local dishes commonly consumed in four regions of Thailand and 42 types of vegetables as their ingredients were analyzed for their total antioxidant capacity (TAC) and total phenolic content (TPC). The TAC was calculated by combining the hydrophilic oxygen radical absorbance capacity (H-ORAC) and the lipophilic oxygen radical absorbance capacity (L-ORAC). The H-ORAC values of all vegetables ranged from 2.87 to 607.17 ?mol Trolox equivalents (TE) per gram, whereas the L-ORAC values ranged from 0.17 to 262.02 ?mol TE.g-1. The TAC values paralleled the H-ORAC values in most vegetables because H-ORAC makes up more than 90% of TAC. All of the vegetables analyzed contained total phenolic contents ranging from 0.29 to 10.03 mg gallic acid equivalent per gram of fresh weight (GAE.g-1). The H-ORAC, L-ORAC and TPC of all dishes showed wide ranges, from 9.82 to 44.37 ?mol TE.g-1, from 0.41 to 4.85 ?mol TE.g?1 and from 0.56 to 2.22 mg GAE.g-1, respectively. To make an overall evaluation, the TAC and TPC consumed per serving size must be considered. The TAC and TPC of all dishes per serving ranged from 901 to 7,237 ?mol TE and from 49 to 326 mg GAE, respectively. Fifty percent of the studied dishes were found to contain a TAC level greater than 3,000 ?mol TE per serving. This means that a single food item of these dishes could achieve the recommended daily allowance of antioxidants currently recommended by the United States Department of Agriculture at 3,000 to 5,000 ?mol TE.
DescriptPage 214-226
local vegetables
oxygen radical absorbance capacity (ORAC)
Thai foods
total phenolic content