Metal Accumulation by the Polychaete Capitella capitata: Influences of Metal Content and Nutritional Quality of Detritus

1982 ◽  
Vol 39 (1) ◽  
pp. 191-196 ◽  
Author(s):  
H. L. Windom ◽  
K. T. Tenore ◽  
D. L. Rice
Keyword(s):  
Metal Concentration ◽  
Nutritional Quality ◽  
Metal Content ◽  
Metal Uptake ◽  
Food Source ◽  
Metal Accumulation ◽  
Metal Concentrations ◽  
Marine Polychaete ◽  
Capitella Capitata

Experimental chambers were used to evaluate the influence of nitrogen and metal concentration of detritus on metal accumulation by the marine polychaete Capitella capitata. During the 90-d experiments worms were fed diets of detritus derived from natural seaweeds, nitrogen supplemented seaweeds, and metal contaminated phytoplankton–zooplankton debris. Metal concentrations in Capitella grown on 19 detrital stocks derived from natural seaweeds were similar. Metal accumulation from a single seaweed detritus supplemented with varying amounts of nitrogen suggests that nutritional quality of the food source influences metal uptake. Metal accumulation in Capitella is significantly increased when fed detritus containing metal concentrations significantly elevated above natural levels.Key words: metal, accumulation, benthos, detritus, polychaetes

scholarly journals Metal accumulation and tolerance of selected plants of asbestos tailings (Stragari)

2015 ◽  
Vol 69 (3) ◽  
pp. 313-321
Author(s):  
Snezana Brankovic ◽  
Radmila Glisic ◽  
Vera Djekic ◽  
Мarija Marin
Keyword(s):  
Plant Species ◽  
Metal Content ◽  
Metal Uptake ◽  
Metal Accumulation ◽  
Limit Values ◽  
Alyssum Murale ◽  
Sanguisorba Minor ◽  
Soil Metal ◽  
Euphorbia Cyparissias ◽  
Asbestos Tailings

The aim of this study was to determine the concentrations of 11 metals in the soil of asbestos tailings in Stragari, Serbia, and in the selected plant species that grow on it, to determine the ability of the plant species in accumulation and tolerance of researched metals. Concentrations of elements researched in the soil had this order: Mg> Fe> Ca> Ni> Cr> Mn> Co> Zn> Pb> Cu> Cd. Concentrations of the metals in plants was variable, dependent on the plant species and types of metals, and graded in the order: Mg> Ca> Fe> Ni> Mn> Cr> Zn> Co> Pb> Cu> Cd. The concentrations of Ni and Cr in the investigated soil were above remediation values, as well as the maximum allowable concentration of substances in the soil according to regulation of Republic of Serbia, and the concentration of Cd and Co were above limit values for a given metals in the soil. The metal uptake does not necessarily correlate with metal content in the soil. Metal uptake by plants depends on the bioavailability of the metal in soils, which in turn depends on the retention time of the metal, as well as the interaction with other elements and substances. However, the most Mg, Fe, Mn, Pb, Cd, Co and Cr were found in species Sanguisorba minor, Ca and Cu in Eryngium serbicum, Ni in Alyssum murale, and Zn in Euphorbia cyparissias. In the Euphorbia cyparissias, it were determined the biological absorption coefficients greater than 1 for Zn and Cu, and in the species Eryngium serbicum and Sanguisorba minor greater than 2 for Cu. The results of this study emphasize the tolerance of several metal by species Sanguisorba minor, present the ability of Euphorbia cyparissias in accumulation of Zn and Cu, as well as of Eryngium serbicum and Sanguisorba minor in accumulation of Cu. Obtained results present the momentary picture of investigated locality, open a lot of questions connected with relationships soil/plant, contents of elements in both systems, their interactions and influences and represented the base for further research.

ALGAS MARINAS COMO FUENTE DE COMPUESTOS BIOACTIVOS EN BENEFICIO DE LA SALUD HUMANA: UN ARTÍCULO DE REVISIÓN/ SEAWEEDS AS SOURCES OF BIOACTIVE COMPOUNDS IN THE BENEFIT OF HUMAN HEALTH: A REVIEW

Biotecnia ◽  
2016 ◽  
Vol 18 (3) ◽  
pp. 20-27
Author(s):  
Richard Gutiérrez Cuesta ◽  
Kethia L. González García ◽  
Olga del R. Valdés Iglesias ◽  
Yasnay Hernández Rivera, ◽  
Yulexi Acosta Suárez
Keyword(s):  
Bioactive Compounds ◽  
Nutritional Quality ◽  
Functional Food ◽  
Food Source ◽  
Protein Structures ◽  
Nutritional Supplements ◽  
Asian Countries ◽  
High Quality ◽  
Ancient Times

Las algas han sido utilizadas desde tiempos remotos como alimento principalmente por países asiáticos. Son usadas en la actualidad en muchos otros países como fertilizantes, biocombustibles, fuentes de hidrocoloides entre otras aplicaciones. Su alto contenido de proteínas, lípidos poliinsaturados, fibra dietética, vitaminas y minerales las hacen una fuente atractiva de alimentos funcionales. También poseen sustancias con valor nutracéutico, como los compuestos fenólicos y las clorofilas. En Cuba se evidencia la existencia de ellas en la plataforma insular incluidas las zonas costeras y las bahías. Sin embargo, hasta el presente no existen suplementos nutricionales ni productos farmacéuticos en el mercado nacional elaborados a partir de las macroalgas. La calidad nutritiva de algas marinas junto al alto contenido de compuestos bioactivos con propiedades beneficiosas para la salud, constituyen dos razones importantes para fundamentar su consumo. Además, las algas poseen en su composición, polisacáridos que permiten su incorporación en alimentos cárnicos y en pastas, manteniendo o mejorando su calidad sensorial, nutritiva y saludable. ABSTRACTSince ancient times, algae have been used as a food source fundamentally by Asian countries. They are employed in our times as fertilizer, biogas, in hydrocolloids’ industry and others. Its composition in high quality proteins, polyunsatured lipids, dietary fiber, vitamins and minerals are determinants to declare algae as an attractive functional food. Furthermore, algae have nutraceutical substances, including phenols and chlorophylls. In Cuba, they are present in all Cuban seashore and harbors. However, no macroalgae’s nutritional supplements or pharmaceutic products in the Cuban market exist. The nutritional quality of seaweed alongside the high content of bioactive compounds with beneficial health properties, constitute two important reasons to increase consumption. Moreover, algae have in their composition protein structures that allows its incorporation into of meat and pasta foods, maintaining or improving their sensory, nutritious and healthy quality.

Heavy metal content in halophytic plants from inland and maritime saline areas

2012 ◽  
Vol 7 (2) ◽  
pp. 307-317 ◽  
Author(s):  
Dubravka Milić ◽  
Jadranka Luković ◽  
Jordana Ninkov ◽  
Tijana Zeremski-Škorić ◽  
Lana Zorić ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Content ◽  
Metal Accumulation ◽  
Heavy Metal Accumulation ◽  
Salicornia Europaea ◽  
Metal Concentrations ◽  
Heavy Metal Concentrations ◽  
Stems And Leaves ◽  
Potential Use ◽  
Halophytic Plants

AbstractWe investigated the concentration of Aluminium (Al), Cobalt (Co), Chromium (Cr), Copper (Cu), Iron (Fe), Manganese (Mn), Nickel (Ni) and Zinc (Zn) in the root and aboveground organs of four halophyte species (Salicornia europaea, Suaeda maritima, Salsola soda and Halimione portulacoides), as well as in the soil from maritime and inland saline areas. The aim of our research was to evaluate the capability of some halophyte species to absorb different heavy metals and to detect differentiation of heavy metal accumulation within populations from inland and maritime saline areas. Generally, the plant roots had significantly higher concentrations of metals when compared to stems and leaves. Zinc was the only metal with concentrations significantly higher in the leaves than in the root and stem. Populations from maritime saline areas had higher trace root and stem metal concentrations than populations from inland saline areas. Excepting zinc, populations from inland saline areas had higher heavy metal concentrations in the leaves. The factors that affected metal accumulation by halophytes included the percentage of salt in the soil. We also discuss the potential use of these halophytes in phytoremediation.

Palatability and nutritional quality of marine invertebrates in a sub-Arctic fjord

2003 ◽  
Vol 83 (6) ◽  
pp. 1215-1219 ◽  
Author(s):  
H. Lippert ◽  
K. Iken
Keyword(s):  
Nutritional Quality ◽  
Nutritional Value ◽  
Food Source ◽  
Marine Invertebrates ◽  
Feeding Preference ◽  
Feeding Preferences ◽  
Arctic Fjord ◽  
Avoidance Reactions

To investigate the palatability of abundant sub-Arctic sessile or sluggish invertebrates and their value as a food source, in situ experiments with natural consumer assemblages were performed in the Kongsfjord (Spitsbergen). These experiments were complemented with quantitative laboratory assays, using a generalist predatory starfish. Feeding preference and avoidance reactions were similar in both assays. Natural assemblages of predators in situ rejected nine out of ten species tested, and 12 out of 16 species were rejected in laboratory assays, indicating a high percentage of unpalatable invertebrates. Results were compared to the biochemical composition of the investigated species to see whether palatability and feeding preferences coincide with nutritional quality of the prey. Although nutritional quality, expressed as protein, lipid, nitrogen, carbon and water content, may account for some of the feeding preferences found, no overall relationship between nutritional value and palatability or feeding preferences was detected.

scholarly journals The effect of treatment with activated carbon on the metal content in reuse of lubricating oil waste

2018 ◽  
Vol 154 ◽  
pp. 01018
Author(s):  
Riyanto ◽  
Tri Astuti Agussetianingrum ◽  
Dwi Putri Juliantydjawi
Keyword(s):  
Activated Carbon ◽  
Metal Concentration ◽  
Metal Content ◽  
Oil Quality ◽  
Quality Standard ◽  
Lubricating Oil ◽  
Adsorption Method ◽  
Metal Concentrations ◽  
Good Material ◽  
Effect Of Treatment

The effect of treatment with activated carbon to the metal content in the reuse of lubricating oil waste has been done. Waste lubricating oil has treatment using 1-butanol and KOH as a solvent and coagulant. The research studies of the effect of activated carbon to the metals are Pb, Cr, Ca, Mg and Fe in lubrication oil waste after treatment. Waste lubricating oil treatment by the adsorption method using activated carbon with various weight are 0,5; 1,0; and 1,5 g. The metal concentrate was analysis after and before treatment using Atomic Adsorption Spectrophotometer (AAS). The analysis result shown the best weight of activated carbon for decreased of metals contains in lubricating oil waste is 1.5 g. Metal concentration of Pb, Cr, Ca, Mg and Fe in lubricating oil waste before treatment are 181.0002, 10.7198, 1019.0220, 325.8788 and 365.1329 mg/L (ppm), respectively. Metal concentration of Pb, Cr, Ca, Mg and Fe in lubricating oil waste after treatment are 47.5670, not detection, 2.6871, 44.3251 and 222.043 mg/L (ppm), respectively. Base on ASTM D5185 standard shown the Ca, Mg and Cr metals concentration according to the new lubricating oil quality standard. Pb and Fe metals concentration after process are still above the new lubricating oil quality standard. As a conclusion is activated carbon is a good material for treatment of waste lubricating oil, especially to reduce metal concentrations.

scholarly journals Heavy metal accumulation potential in pomegranate fruits and leaves grown in roadside orchards

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8990
Author(s):  
Şeyma Demirhan Aydın ◽  
Mine Pakyürek
Keyword(s):  
Heavy Metal ◽  
Metal Concentration ◽  
Metal Accumulation ◽  
Heavy Metal Concentration ◽  
Punica Granatum ◽  
Heavy Metal Accumulation ◽  
Metal Concentrations ◽  
Main Road ◽  
Heavy Metal Concentrations ◽  
Fruit Samples

This study was carried out to determine the possible heavy metal accumulation in fruits and leaves of Zivzik pomegranate (Punica granatum L.) grown in two different roadside orchards located in Pirinçli and Kapılı villages of Siirt province, Turkey. Leaf and fruit samples were collected from trees located at 0, 50, 100 m distances from the main roads. Plant samples were analyzed for cobalt (Co), nickel (Ni), cadmium (Cd), lead (Pb) and chromium (Cr) concentrations. The Co, Ni, Cd, Pb and Cr concentrations of fruit samples collected from Pirinçli village were ranged from 0.082 to 0.238 mg kg−1, from 1.160 to 1.559 mg kg−1, from 0.087 to 0.179 mg kg−1, 0.326 to 0.449 mg kg−1 and 0.606 to 1.054 mg kg−1, respectively. The Co, Ni, Cd, Pb and Cr concentrations of fruit samples from Kapılı village were between 0.085 and 0.137 mg kg−1, 1.042 and 1.123 mg kg−1, 0.037 and 0.076 mg kg−1, 0.277 and 0.520 mg kg−1 and 0.762 and 0.932 mg kg−1, respectively. Heavy metal concentrations of leaf samples from Pirinçli village varied from 0.191 to 0.227 mg Co kg−1, 2.201 to 3.547 mg Ni kg−1, 0.051 to 0.098 mg Cd kg−1, 0.535 to 0.749 mg Pb kg−1 and from 1.444 to 2.017 mg Cr kg−1. Similarly, the heavy metal concentration of leaf samples from Kapılı villages were between 0.213 and 0.217 mg Co kg−1, 2.160 and 2.511 mg Ni kg−1, 0.058 and 0.114 mg Cd kg−1, 0.579 and 0.676 mg Pb kg−1 and 1.688 and 1.518 mg Cr kg−1. The Co, Ni and Cr concentrations in fruit samples collected from 0, 50 and 100 meters to the main road in Pirinçli village were at statistically significant level, while only Ni concentration in leaf samples collected from 0, 50 and 100 meters to the main road was at significant level. In contrast, heavy metal concentrations in fruit and leaf samples collected from 0, 50 and 100 m to the main road in Kapılı village were not statistically significant level.

Food procurement in English-language Canadian public schools: Opportunities and challenges

2019 ◽  
Vol 6 (1) ◽  
pp. 75-99
Author(s):  
Shawna Holmes
Keyword(s):  
Public Schools ◽  
Food Environment ◽  
Nutritional Quality ◽  
English Language ◽  
Nutrient Content ◽  
Food Environments ◽  
School Food ◽  
Provincial Level ◽  
School Food Environment

This paper examines the changes to procurement for school food environments in Canada as a response to changes to nutrition regulations at the provincial level. Interviews with those working in school food environments across Canada revealed how changes to the nutrition requirements of foods and beverages sold in schools presented opportunities to not only improve the nutrient content of the items made available in school food environments, but also to include local producers and/or school gardens in procuring for the school food environment. At the same time, some schools struggle to procure nutritionally compliant foods due to increased costs associated with transporting produce to rural, remote, or northern communities as well as logistic difficulties like spoilage. Although the nutrition regulations have facilitated improvements to food environments in some schools, others require more support to improve the overall nutritional quality of the foods and beverages available to students at school.

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