Determination of heavy metals in sea cucumber varieties in Sabah

Revathi Thilakar, (2011) Determination of heavy metals in sea cucumber varieties in Sabah. Universiti Malaysia Sabah. (Unpublished)

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Abstract

In Malaysia, the sea cucumbers have great value for their medicinal reimbursement and also as culinary delicacies. They are widely exploited due to their medicinal properties as some traditional medicines are processed from sea cucumber. This is due to the fact that sea cucumbers are useful in treatment of stomach ulcers, wound healing and as a pain killers. Sea cucumber fisheries are known to be important in Sabah, as it contributes to the livelihood for the supplement of income and significantly to foreign exchange. The main objective of this study was to determine the presence of heavy metals such as As, Pb, Cd, Zn, Cr, Cu and Mn concentration in the body wall of sea cucumber found around Sabah, to compare the concentration of each heavy metals between the different varieties of sea cucumber and to determine the safety level of metal accumulation in the sea cucumbers based on the Food Act and Regulations of Malaysia and other countries. The samples used in this study included Holothuria edulis, Holothoria leueospilota, Actinopyga lecanora, Phyllophogius spiculata, Stichopus vastus, Bohadachio vitiensis, Thelenota anax and Thelenota ananas. Heavy metal determination was done by using inductively coupled plasma mass spectrometer (ICP-MS). The outcome indicates that all the metal of study is present in the body wall of the selected sea cucumbers. Therefore the most abundant metal among all sea cucumbers were zinc, except manganese in Phyllophogius spiculata. The metal comparison between the sea cucumber species indicates that the highest concentration of Arsenic is found in Holothoria leueospilota with 2.43±0.01mg/g, Zinc in Stichopus vastus with 28.37±0.01mg/g, Manganese in Phyllophogius spiculata with 32.67±0.01mg/g and the species Thelenota ananas show the highest concentration of Lead with 0.24±0.01mg/g, Cadmium with 2.43±0.01mg/g, Copper with 1.35±0.01mg/g, and Chromium with 3.33±0.01mg/g. This shows that Thelenota ananas has the higher level of metal absorbance compared to other samples. To conclude, the metal concentration in all the samples are at the safe level when compared to the Food Act and Regulations of Malaysia and other countries. Therefore, the sea cucumbers found in Sabah are safe for human consumption.

Item Type:Academic Exercise
Uncontrolled Keywords:heavy metals, sea cucumber, Sabah
Subjects:T Technology > TD Environmental technology. Sanitary engineering
T Technology > TX Home economics > Nutrition. Foods and food supply
Divisions:SCHOOL > School of Food Science and Nutrition
ID Code:5964
Deposited By:IR Admin
Deposited On:16 May 2013 09:14
Last Modified:16 May 2013 09:14

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