Potential of metal contamination to affect the food safety of seaweed ( Caulerpa spp.) cultured in coastal ponds in Sulawesi, Indonesia

Perryman, Shane E.; Lapong, Imran; Mustafa, Akhmad; Sabang, Rosiana; Rimmer, Michael A.

doi:10.1016/j.aqrep.2016.12.002

Cited by 36 publications

(23 citation statements)

References 22 publications

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“…In the search for new resources to potentially produce alginates, one abundant type of brown seaweed (algae), Sargassum duplicatum from the coast of Banten of Indonesia, has been identified and have become an attractive material for food [28][29][30]. However, alginates have not been studied for biomedical applications.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Porous Hydroxyapatite and Alginate Composite Scaffolds for Bone Tissue Engineering

2018

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Objective: To prepare and characterize composite scaffolds of a hydroxyapatite (HA) and an alginate having high viscosity. Materials and Methods:HA powder was synthesized using wet chemical precipitation, the alginate powder was extracted from the Sargassum duplicatum seaweed, and the HA/alginate composite scaffolds were prepared by freeze-drying. X-ray diffraction and Fourier transform infrared techniques were utilized to characterize the HA and alginate, and electron microscopy was used to evaluate the HA and the HA/alginate composite scaffolds. The HA/alginate composite scaffold obtained from the commercially available HA and alginate powders were employed as a comparison.Results: Synthesized HAs were identified as the HA phase, which contained absorbed water, phosphate, and carbonate groups. The extracted alginate contained the carboxyl, cyclic ether and hydroxyl groups. The scaffolds prepared from the HA and alginate mixture were three-dimensional and containing interconnected pores with a diameter ranging from 150 to 300 µm and pore walls of a composite construction. Conclusion:A three-dimensional scaffold was produced using a freeze-drying method from a composite of HA and the high viscosity alginate solution. The scaffold was highly porous and showed interconnected pores, with a diameter ranging from 150 to 300 µm.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Porous Hydroxyapatite and Alginate Composite Scaffolds for Bone Tissue Engineering

2018

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“…Consumption of different macroalgal species as human food is widespread in many countries [46]. C. lentillifera is considered as a sustainable food source for human consumption due to its high nutritional value [27,48]. However, macroalgae can absorb and accumulate heavy metals quickly from the growth medium.…”

Section: Heavy Metal Contentmentioning

confidence: 99%

Capacity of Caulerpa lentillifera in the Removal of Fish Culture Effluent in a Recirculating Aquaculture System

et al. 2019

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Aquaculture is one of the fastest growing food producing industries in the world. Aquaculture effluent contains high concentrations of inorganic nutrients. Reduction of these inorganic nutrients in aquaculture effluent is crucial for fulfilling the effluent standards or reuse of aquaculture effluent. This study investigated the effective use of green macroalga Caulerpa lentillifera as a bioremediatory species for nutrient removal from aquaculture effluent by conducting an on-station experiment and measurements. The effluent of a fish culture unit was circulated through a macroalgal culture unit every four days for a total of 60 days, allowing 15 circulations. Concentrations of inorganic nutrients (NO2−-N, NO3−-N, NH3-N, and PO43−) were measured in the integrated system consisting of a fish unit, settling unit, macroalgal unit and extra tank for water circulation in triplicates. Multiple linear regression analysis revealed that the application of the bioremediation system led to a significant reduction in nutrient concentrations within one day, and slightly further in the following two days. On average over the 15 circulations, the first one day of application decreased the concentrations of NO2−-N, NO3−-N, NH3-N, and PO43− by 0.247 mg/L, 81.6 mg/L, 0.682 mg/L, and 0.352 mg/L, respectively. Furthermore, the C:N ratio of macroalgae decreased during the 60-day application period, providing evidence of the nutrient uptake by macroalgae. Based on the European Union (EU) standard and quality criteria of France and the Joint FAO/WHO Expert Committee (JFWEC), the macroalgae grown in the integrated system were at the safe level for human consumption in terms of contents of Cd, Pb, and As. The results of our study imply that recirculating aquaculture systems utilizing C. lentillifera for biofiltration have the potential for effective treatment of aquaculture effluent integrating fish and macroalgae production.

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“…The current global warming, caused by greenhouse gas emission, results in the rise of ocean temperature and CO 2 contribution to ocean acidification. Besides, heavy metals are absorbed by the seafood [1] and directly involved consumers [2,3]. Otherwise, sustainable fisheries production is a major challenge for the aquaculture industry.…”

Section: Introductionmentioning

confidence: 99%

Utilization of the light density to reduce the development of <i>Lyngbya</i> sp. and their growth on <i>Caulerpa lentillifera</i> J. Agardh in a recirculating aquature system

Quemper

Dam

Linh-Trung

et al. 2020

VJMST

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The release of pollutants is endangering ecosystems, biodiversity and seafood. Therefore, it is of the requirement to create innovative methods in seafood production. Caulerpa lentillifera J. Agardh is a well-known seaweed for its properties and edible. We cultured C. lentillifera in a recirculating aquaculture system under laboratory conditions. However, after 7 days the culture was invaded by epiphyte algae Lyngbya sp. This experiment was designed to remove those algae by using light density as a treatment. Two irradiances were tested including 20 μmol photons m-2.s-1 (low light density) and 40 μmol photons m-2.s-1 (initial light density). Every week we measured the stolon length, thallus weight, and calculated the specific growth rate. Results showed that after 30 days C. lentillifera under low light density regained their healthy green color and Lyngbya sp. was no longer present. Meanwhile, in the initial light density (40 μmol photons m-2.s-1) Lyngbya sp. covered almost all thalli of C. lentillifera, and half of them were dead. The measured results of specific growth rate (%d-1) and weight (g) of C. lentillifera in low light density conditions were better than those of C. lentillifera in the initial condition. The light density, therefore, might be used as a treatment to remove Lyngbya sp. from Caulerpa lentillifera in aquaculture.

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Potential of metal contamination to affect the food safety of seaweed ( Caulerpa spp.) cultured in coastal ponds in Sulawesi, Indonesia

Cited by 36 publications

References 22 publications

Preparation and Characterization of Porous Hydroxyapatite and Alginate Composite Scaffolds for Bone Tissue Engineering

Preparation and Characterization of Porous Hydroxyapatite and Alginate Composite Scaffolds for Bone Tissue Engineering

Capacity of Caulerpa lentillifera in the Removal of Fish Culture Effluent in a Recirculating Aquaculture System

Utilization of the light density to reduce the development of <i>Lyngbya</i> sp. and their growth on <i>Caulerpa lentillifera</i> J. Agardh in a recirculating aquature system

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