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Phytotoxicity of phenolic acids extracted from palm oil dry solids

Othman, Radziah and Rahmani, Mawardi and Hashim, Azizah (1997) Phytotoxicity of phenolic acids extracted from palm oil dry solids. Pertanika Journal of Tropical Agricultural Science, 20 (2/3). pp. 147-155. ISSN 0126-6128

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A study on the extraction of palm oil dry solids (PODS) was conducted to identify the water-soluble compounds involved in the phytotoxicity of PODS. The aqueous extract of PODS was sequentially partitioned using various organic solvents. Each of the dried extracts was bio assayed for inhibitory activity on the growth of tomato radicles. Maximum inhibition of radicle growth was observed in the diethyl ether extract, resulting in 53.3% growth compared with control. Further separation of the ether fraction using column chromatography resulted in a single toxic fraction, RM10, which caused only 30% radicle growth. The fraction was compared with 14 synthetic phenolic compounds using thin-layer chromatography and was observed to be similar to four of the compounds. Further analysis by high performance liquid chromatography revealed that the RM10 fraction comprised vanillic acid. However, the RM10 fraction was more inhibitory to the growth of tomato radicles than synthetic vanillic acid.

Item Type:Article
Keyword:Palm oil dry solids (PODS); Phytotoxicity; Bioassay; Phenolic acid; Vanillic acid
Faculty or Institute:Universiti Putra Malaysia
Publisher:Universiti Putra Malaysia Press
ID Code:3636
Deposited By: Nasirah Abu Samah
Deposited On:30 Nov 2009 16:05
Last Modified:07 Sep 2015 11:28

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