This study aims to determine the level of bioaccumulation of heavy metals in shellfish in the western region of Batam Island. Batam is an area with a high potency of heavy metal pollution due to the high level of activity on the board. This research was conducted at five sampling locations. The samples in this study were species of Anadara sp, Perna viridis and Crassostrea gigas. Heavy metals released are cadmium (Cd), lead (Pb) and copper (Cu). The analysis of heavy metal was carried out using Atomic Absorption Spectroscopy (AAS). Based on the calculation results obtained by the bioconcentration factor (BCF) of heavy metals in Anadara sp, Perna viridis and Crassostrea gigas. Bioconcentration of metals in water medium obtained Pb> Cu> Cd respectively, with the BCFs of Pb and Cu at the high category, and Cd is not detected. Whereas for Anadara sp in the sedimentary medium obtained the BCFs of Cu> Cd> Pb respectively, with low category for all metals. Next, for Perna viridis and Crassostrea gigas species, the BCF was obtained as follows: Cd> Pb> Cu, with the categories of BCF is also relatively low.
Abstract. The objective of the present study was to analyze the metal content of copper and lead in Enhalus accoroides PendahuluanPerairan barat pulau Batam dipengaruhi oleh aktivitas industri perkapalan (shipyard), pelabuhan, perhotelan dan limbah domestik dan diduga telah memberikan cemaran pada perairan khususnya logam berat. Cemaran logam berat yang sering terjadi di perairan terbuka berkaitan dengan aktivitas industri, pertanian, perkebunan, dan limbah domestik (Sarong et al., 2013;Rochyatun et al., 2006). Logam berat merupakan polutan yang berbahaya karena bersifat racun (Annibaldi et al., 2015; El-Nemr et al., 2012) dan sulit terurai (El-Nemr et al., 2016). Selain itu, jika organisme laut terkontaminasi logam berat dapat menyebabkan logam tersebut berpindah ke tingkat tropik yang lebih tinggi dan dapat memasuki rantai makanan manusia melalui makanan laut yang terkontaminasi tersebut (Annibaldi et al., 2015).Peningkatan kadar logam berat akan mempengaruhi kehidupan organisme laut dimana logam berat pada kadar rendah yang sebelumnya dibutuhkan untuk proses metabolisme berubah menjadi racun. Hal ini berkaitan dengan sifat logam berat yaitu sulit terurai sehingga mudah terakumulasi dalam lingkungan perairan dan keberadaannya secara alami sulit terurai (Ika dan Said, 2011). Faktor fisika dan kimia yang mempengaruhi akumulasi logam berat
Fish play an important role in human nutrition and therefore need to be carefully and routinely monitored to ensure that there are no high levels of heavy metals being transferred to human through their consumption. This study has been carried out to determine level of heavy metals (Cu, Pb, and Cd) in water and angel fish, Chelmon rostractus collected from coast of Batam. We report levels of Cu, Cd and Pb in water and angel fish from Coast Batam using Atomic Absorption Spectroscopy (AAS). Level of heavy metals obtained in water and fishes were fluctuative. Cu was obtained in both, water and fish muscles. Level of Cu in fishes muscle still under the permissible limit, but it was exceeded permissible limit for water. Cd not detected in water, but it was obtained in fish muscles. Level of Cd in fishes from Tanjung Pinggir site was exceeded permissible limit. High level of Pb was found in water and fish muscles. Level of Pb in water and fish muscles were exceeded permissible limit. It is indicated that the coast Batam has contaminated with Cu, Pb and Cd. Key words: heavy metals, angel fish, marine pollution, Batam coastal
One of the important components in aquatic ecosystems is fish diversity, which is a key factor in determining its functionality. The coral reef fish is one of the aquatic biotas susceptible to pollutants. Besides being able to influence the composition of fish diversity, it also has an impact on its biological factors, such as its length-weight and conditions. This study aims to examine the relationship of length-weight and condition factors of four dominant fishes caught, which are ecologically and economically important, namely Lates calcarifer, Parachaetodon ocellatus, Stephanolepis cirrhifer, and Chelmon rostractus.These fish species were dominantly caught using bubu trap. The results of the length-weight relationship were b3 of all species, with an exponent value of 2.247 for the L. calcarifer; 1.932 for P. ocellatus; 2.74 for S. cirrhifer and 2.84 for C. rostractus. Fulton’s (K) condition factor for L. carifer ranged from 15.55-21.06 (average: 17.95), for P.ocellatus ranging from 27.30-35.59 (average: 30.38), for S. cirrhifer ranged from 17.58-27.23 (average: 21.29), and for C. rostractus ranging from 21.86-30.95 (average: 24.24). While the relative weight (Wr) condition factor average value of L. calcarifer is 102.53, P. ocellatus is 100.88, S. cirrhifer is 101.72, and C. rostractus is 101.11. It is concluded that the fish had an allometrict growth pattern, and condition factor values indicate good aquatic environmental conditions and a balance between prey and predatorKeywords: Length-Weight; Growth Pattern; Condition Factors
Food fraud and adulteration are the global issues, currently. One important issue is about gelatine since it comes from many sources of animals. Therefore, analytical method for gelatine must be developed and used for the authentication. This study was conducted to investigate the Volatile Compounds (VCs) of gelatine and the Maillard Reaction Products (MRPs) which are responsible to their aroma. Three gelatine standards from bovine, fish and porcine bought from Sigma Aldrich were used. A high reactivity reducing sugar namely xylose was used in the Maillard Reaction (MR). A Solid Phase Micro Extraction-Gas Chromatography-Mass Spectroscopy (SPME-GC-MS) used to evaluate the VCs in the samples. The VCs were identified by comparing the mass spectra of the compounds with database of NIST library. Moreover, retention time using the n-Alkane index were compared with literature data. There were 67 VCs have been identified. Among them, furfural, acetic acid, nonanone, dimethyl disulphide and decanone were considered as the important volatiles in gelatine due to its abundance. In the MRPs, furfural, 1-(2-furanylmethyl)-1H-pyrrole, 1-(2-furanyl)- ethanone, acetic acid and 2,2’-bifuran were predominant. Additionally, heptanol, octanal, nonanal, nonanone, dimethyl disulphide and dimethyl trisulphide could be considered as the important compounds due to its low odour threshold value. The compounds had a direct influence on the overall aroma of samples and could be potential to use in gelatine differentiation.
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