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Accumulation of inorganic arsenic, and growth rate by changing of phosphate concentration in Hizikia fusiforme
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인산염 농도 변화에 따른 톳 (Hizikia fusiforme)의 무기비소 (As (V)) 축적 및 생장률 변동

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Type
Academic journal
Author
Journal
한국환경생물학회 환경생물 환경생물 제37권 제2호 KCI Accredited Journals
Published
2019.1
Pages
189 - 195 (7page)

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Accumulation of inorganic arsenic, and growth rate by changing of phosphate concentration in Hizikia fusiforme
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In this study, we performed an analysis of the accumulation of inorganic arsenic and growth rate with changes in phosphate concentration in Hizikia fusiforme. When exposed to inorganic arsenic for fourteen days, we found that the collection of inorganic arsenic hardly increased at high phosphate concentrations (2 mg L-1). However, when the phosphate concentration was low (0.02 mg L-1), accumulation of inorganic arsenic increased. Additionally, H. fusiforme decreased in a growth rate of 14.5% in low phosphate concentration (0.02 mg L-1) and fell in a growth rate of 30% when exposed to inorganic arsenic (10 μg L-1). H. fusiforme cannot distinguish between phosphate and inorganic arsenic. Thus, when phosphate concentration was lower, the inorganic arsenic accumulation increased, and accumulated inorganic arsenic inhibited photosynthesis and cell division, reducing the growth rate. H. fusiforme is known to have higher inorganic arsenic accumulation than other seaweeds. Therefore, various studies are needed to secure the food safety of H. fusiforme which is an essential aquaculture species in Korea.

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Almela C / 2006 / Total arsenic, inorganic arsenic, lead and cadmium contents in edible seaweed sold in Spain / Food Chem. Toxicol 44:1901~1908 google schola Areco MM / 2010 / Copper, zinc, cadmium and lead biosorption by Gymnogongrus torulosus. Thermodynamics and kinetics studies / Colloid Surf. B-Biointerfaces 81:620~628 google schola Besada V / 2009 / Heavy metals in edible seaweeds commercialised for human consumption / J. Mar. Syst 75:305~313 google schola Borak J / 2007 / Seafood arsenic : implications for human risk assessment / Regul. Toxicol. Pharmacol 47:204~212 google schola Dhargalkar VK / 2009 / Southern ocean seaweeds : A resource for exploration in food and drugs / Aquaculture 287:229~242 google schola

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