Biodegradation of Palm-based 9,10-Dihydroxystearic Acid (DHSA) in aquatic environments

Palm-based DHSA is a new chemical developed in MPOB that has three reactive sites that would enable the preparation of many useful derivatives. New chemicals introduced into the market have to be registered and information on their environmental performance such as biodegradability has to be supplie...

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Main Authors:	Razmah, G., Siti Afida, I., Noorazah, Z., Hazimah, A.H.
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2015
Online Access:	http://journalarticle.ukm.my/9260/ http://journalarticle.ukm.my/9260/ http://journalarticle.ukm.my/9260/1/07_Razmah_.pdf

id	ukm-9260
recordtype	eprints
spelling	ukm-92602016-12-14T06:49:23Z http://journalarticle.ukm.my/9260/ Biodegradation of Palm-based 9,10-Dihydroxystearic Acid (DHSA) in aquatic environments Razmah, G. Siti Afida, I. Noorazah, Z. Hazimah, A.H. Palm-based DHSA is a new chemical developed in MPOB that has three reactive sites that would enable the preparation of many useful derivatives. New chemicals introduced into the market have to be registered and information on their environmental performance such as biodegradability has to be supplied as required under various national and international laws. Biodegradability screening tests, such as the OECD 301 series, are basic tools for assessment of the environmental fate of chemicals in aquatic environments. A substance is considered readily biodegradable when its biodegradability reaches the pass levels of 60% carbon dioxide (CO2)/theoretical carbon dioxide (ThCO2) evolution, 60% biochemical oxygen demand (BOD)/theoretical oxygen demand (ThOD) or 70% dissolved organic carbon (DOC) removal within 28 days. Palm-based DHSA was found to be readily biodegradable where its biodegradability reached 65% within 28 days test period determined via the OECD 301C Modified MITI (I) test method, which passed the 60% level of BOD/ThOD requirement as stipulated in the OECD Guidelines for testing of chemicals. This result is indicative of DHSA’s rapid degradation in aquatic environments. Hence, DHSA is not expected to accumulate in the food chains and will not pose problems in the aquatic environments although it is poorly soluble in water. Universiti Kebangsaan Malaysia 2015-09 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/9260/1/07_Razmah_.pdf Razmah, G. and Siti Afida, I. and Noorazah, Z. and Hazimah, A.H. (2015) Biodegradation of Palm-based 9,10-Dihydroxystearic Acid (DHSA) in aquatic environments. Sains Malaysiana, 44 (9). pp. 1263-1268. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid44bil9_2015/KandunganJilid44Bil9_2015.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Palm-based DHSA is a new chemical developed in MPOB that has three reactive sites that would enable the preparation of many useful derivatives. New chemicals introduced into the market have to be registered and information on their environmental performance such as biodegradability has to be supplied as required under various national and international laws. Biodegradability screening tests, such as the OECD 301 series, are basic tools for assessment of the environmental fate of chemicals in aquatic environments. A substance is considered readily biodegradable when its biodegradability reaches the pass levels of 60% carbon dioxide (CO2)/theoretical carbon dioxide (ThCO2) evolution, 60% biochemical oxygen demand (BOD)/theoretical oxygen demand (ThOD) or 70% dissolved organic carbon (DOC) removal within 28 days. Palm-based DHSA was found to be readily biodegradable where its biodegradability reached 65% within 28 days test period determined via the OECD 301C Modified MITI (I) test method, which passed the 60% level of BOD/ThOD requirement as stipulated in the OECD Guidelines for testing of chemicals. This result is indicative of DHSA’s rapid degradation in aquatic environments. Hence, DHSA is not expected to accumulate in the food chains and will not pose problems in the aquatic environments although it is poorly soluble in water.
format	Article
author	Razmah, G. Siti Afida, I. Noorazah, Z. Hazimah, A.H.
spellingShingle	Razmah, G. Siti Afida, I. Noorazah, Z. Hazimah, A.H. Biodegradation of Palm-based 9,10-Dihydroxystearic Acid (DHSA) in aquatic environments
author_facet	Razmah, G. Siti Afida, I. Noorazah, Z. Hazimah, A.H.
author_sort	Razmah, G.
title	Biodegradation of Palm-based 9,10-Dihydroxystearic Acid (DHSA) in aquatic environments
title_short	Biodegradation of Palm-based 9,10-Dihydroxystearic Acid (DHSA) in aquatic environments
title_full	Biodegradation of Palm-based 9,10-Dihydroxystearic Acid (DHSA) in aquatic environments
title_fullStr	Biodegradation of Palm-based 9,10-Dihydroxystearic Acid (DHSA) in aquatic environments
title_full_unstemmed	Biodegradation of Palm-based 9,10-Dihydroxystearic Acid (DHSA) in aquatic environments
title_sort	biodegradation of palm-based 9,10-dihydroxystearic acid (dhsa) in aquatic environments
publisher	Universiti Kebangsaan Malaysia
publishDate	2015
url	http://journalarticle.ukm.my/9260/ http://journalarticle.ukm.my/9260/ http://journalarticle.ukm.my/9260/1/07_Razmah_.pdf
first_indexed	2023-09-18T19:54:23Z
last_indexed	2023-09-18T19:54:23Z
_version_	1777406431571476480

Biodegradation of Palm-based 9,10-Dihydroxystearic Acid (DHSA) in aquatic environments

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