Acute ecotoxicity (48-hr EC50) assessment of palm-based methyl ester sulphonates (MES) towards Daphnia magna

Razmah Ghazali, . and Siti Afida Ishak, . and Noorazah Zolkarnain, . and Hazimah Abu Hassan, . Acute ecotoxicity (48-hr EC50) assessment of palm-based methyl ester sulphonates (MES) towards Daphnia magna. pp. 74-80. ISSN 1511-2780

Palm-based methyl ester sulphonates (MES) is an anionic surfactant derived from palm oil through sulphonation of fatty acid methyl esters. It has good surface-active properties and biodegradability excellent detergency and is less sensitive to water hardness. It has been used in powder and liquid detergent formulations and other cleaning applications. The evaluation of MES in aquatic ecosystems is vital as they are discharged in large volumes into the environment. An attempt was made to evaluate the acute effect of palm-based MES on Daphnia magna through acute immobilisation studies (48 hr EC50). MES of various chain lengths were selected for the investigation. Based on the results the EC50 of MES (based on immobilisation) decreased (became more toxic) with increasing carbon chain length of the surfactant. This trend was also observed in many other anionic surfactants. MES is well suited for environmental-friendly detergent due to its good biodegradability and its toxicity which will not pose any environmental effect on aquatic organisms. The present study provides relevant data concerning the effects of MES surfactant on freshwater invertebrate which are useful to establish water quality criteria in a regulatory framework.

Full text available from: Official URL: http://jopr.mpob.gov.my/acute-ecotoxicity-48-hr-ec...

Abstract

Palm-based methyl ester sulphonates (MES) is an anionic surfactant derived from palm oil through sulphonation of fatty acid methyl esters. It has good surface-active properties and biodegradability excellent detergency and is less sensitive to water hardness. It has been used in powder and liquid detergent formulations and other cleaning applications. The evaluation of MES in aquatic ecosystems is vital as they are discharged in large volumes into the environment. An attempt was made to evaluate the acute effect of palm-based MES on Daphnia magna through acute immobilisation studies (48 hr EC50). MES of various chain lengths were selected for the investigation. Based on the results the EC50 of MES (based on immobilisation) decreased (became more toxic) with increasing carbon chain length of the surfactant. This trend was also observed in many other anionic surfactants. MES is well suited for environmental-friendly detergent due to its good biodegradability and its toxicity which will not pose any environmental effect on aquatic organisms. The present study provides relevant data concerning the effects of MES surfactant on freshwater invertebrate which are useful to establish water quality criteria in a regulatory framework.

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Item Type:	Article
AGROVOC Term:	Daphnia magna
AGROVOC Term:	Aquatic animals
AGROVOC Term:	Aquatic organisms
AGROVOC Term:	Aquatic environment
AGROVOC Term:	Evaluation
AGROVOC Term:	Laboratory experimentation
AGROVOC Term:	Immobilization
AGROVOC Term:	Esters
AGROVOC Term:	Surfactants
AGROVOC Term:	Biodegradability
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/24312

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