Toxicity profiles between strains of Alexandrium tamiyavanichii

Phycotoxins are byproducts of toxic microalga that capable of causing severity on hu-mans upon consuming contaminated seafood. The threshold level for bivalve toxicity accumulation has been universally compromised by the scientist worldwide to be 80μg/STX equivalent. The amount of toxins released by...

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Main Authors:	Hamdan, Nurul Ashima, Abu Hassan, Muhamad Shafiq, Muhamad Bunnori, Noraslinda
Format:	Conference or Workshop Item
Language:	English English
Published:	2016
Subjects:	Q Science (General) QL Zoology
Online Access:	http://irep.iium.edu.my/52655/ http://irep.iium.edu.my/52655/19/52655.pdf http://irep.iium.edu.my/52655/24/NURUL%20ASHIMA%20%28ICOSMAP%29.pdf

id	iium-52655
recordtype	eprints
spelling	iium-526552017-05-12T02:19:04Z http://irep.iium.edu.my/52655/ Toxicity profiles between strains of Alexandrium tamiyavanichii Hamdan, Nurul Ashima Abu Hassan, Muhamad Shafiq Muhamad Bunnori, Noraslinda Q Science (General) QL Zoology Phycotoxins are byproducts of toxic microalga that capable of causing severity on hu-mans upon consuming contaminated seafood. The threshold level for bivalve toxicity accumulation has been universally compromised by the scientist worldwide to be 80μg/STX equivalent. The amount of toxins released by microalgae however varies according to species as some of the microalgae synthesize toxins within small number of cells while others required a blooming event for the toxins to be detected. It is also possible for the toxicity of one species being gradually decreases throughout years in culture. Alexandrium tamiyavanichii has been reported to cause toxicity in seafood products that subject to hospitalized cases in Malaysia. Genus Alexandrium has been known for the stability of the saxitoxin production yet no total loss of toxicity has been recorded. Two cultures of A. tamiyavanichii have been tested for its toxicity using high-performance liquid chromatography (HPLC) with GTX standards as the reference. Strains isolated from Kuantan Port during recent cases of paralytic shellfish poisoning (PSP) outbreaks showed extremely high in toxin content (32 937 fmol.cell-1) while the old culture of A. tamiyavanichii taken from Sebatu Malacca exhibited very low level of toxicity (0.4405 fmol.cell-1). There are many factors influencing toxicity properties of A. tamiyavanichii with highlights in nutrients deprivation and adaptation as well as bacterial influences for the old culture. Further justification is needed for both strains with consistency in culture medium in order to reason out the possibility of reduction in toxicity. 2016 Conference or Workshop Item NonPeerReviewed application/pdf en http://irep.iium.edu.my/52655/19/52655.pdf application/pdf en http://irep.iium.edu.my/52655/24/NURUL%20ASHIMA%20%28ICOSMAP%29.pdf Hamdan, Nurul Ashima and Abu Hassan, Muhamad Shafiq and Muhamad Bunnori, Noraslinda (2016) Toxicity profiles between strains of Alexandrium tamiyavanichii. In: 2nd International Conference on Oceanography and Sustainable Marine Production (ICOSMaP 2016), 23rd-25th Aug. 2016, Kuantan, Pahang. (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	Q Science (General) QL Zoology
spellingShingle	Q Science (General) QL Zoology Hamdan, Nurul Ashima Abu Hassan, Muhamad Shafiq Muhamad Bunnori, Noraslinda Toxicity profiles between strains of Alexandrium tamiyavanichii
description	Phycotoxins are byproducts of toxic microalga that capable of causing severity on hu-mans upon consuming contaminated seafood. The threshold level for bivalve toxicity accumulation has been universally compromised by the scientist worldwide to be 80μg/STX equivalent. The amount of toxins released by microalgae however varies according to species as some of the microalgae synthesize toxins within small number of cells while others required a blooming event for the toxins to be detected. It is also possible for the toxicity of one species being gradually decreases throughout years in culture. Alexandrium tamiyavanichii has been reported to cause toxicity in seafood products that subject to hospitalized cases in Malaysia. Genus Alexandrium has been known for the stability of the saxitoxin production yet no total loss of toxicity has been recorded. Two cultures of A. tamiyavanichii have been tested for its toxicity using high-performance liquid chromatography (HPLC) with GTX standards as the reference. Strains isolated from Kuantan Port during recent cases of paralytic shellfish poisoning (PSP) outbreaks showed extremely high in toxin content (32 937 fmol.cell-1) while the old culture of A. tamiyavanichii taken from Sebatu Malacca exhibited very low level of toxicity (0.4405 fmol.cell-1). There are many factors influencing toxicity properties of A. tamiyavanichii with highlights in nutrients deprivation and adaptation as well as bacterial influences for the old culture. Further justification is needed for both strains with consistency in culture medium in order to reason out the possibility of reduction in toxicity.
format	Conference or Workshop Item
author	Hamdan, Nurul Ashima Abu Hassan, Muhamad Shafiq Muhamad Bunnori, Noraslinda
author_facet	Hamdan, Nurul Ashima Abu Hassan, Muhamad Shafiq Muhamad Bunnori, Noraslinda
author_sort	Hamdan, Nurul Ashima
title	Toxicity profiles between strains of Alexandrium tamiyavanichii
title_short	Toxicity profiles between strains of Alexandrium tamiyavanichii
title_full	Toxicity profiles between strains of Alexandrium tamiyavanichii
title_fullStr	Toxicity profiles between strains of Alexandrium tamiyavanichii
title_full_unstemmed	Toxicity profiles between strains of Alexandrium tamiyavanichii
title_sort	toxicity profiles between strains of alexandrium tamiyavanichii
publishDate	2016
url	http://irep.iium.edu.my/52655/ http://irep.iium.edu.my/52655/19/52655.pdf http://irep.iium.edu.my/52655/24/NURUL%20ASHIMA%20%28ICOSMAP%29.pdf
first_indexed	2023-09-18T21:14:34Z
last_indexed	2023-09-18T21:14:34Z
_version_	1777411476571553792

Toxicity profiles between strains of Alexandrium tamiyavanichii

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