Research Publications (Food Safety)

Abstract

The aim of the present study was to analyze the response to exposure to pollutants (trace elements and organic pollutants) using biomarkers (micronucleated cells and glutathione S-transferase and catalase activity) in uçá crab Ucides cordatus. The study was carried out at four sites: Cacha Prego (CP) and Ponta Grossa (PG), areas with low anthropic activity; and Ilha de Maré (IM) and Pitinga (PT), areas affected by industrial activity.

Evaluation of the arsenic content in food has always been an important issue due to its high toxicity. This is especially relevant for Vietnam, a country with high arsenic contamination. The present study focuses on the development of a model function to predict As uptake in the vegetable Brassica perviridis as a function of the conditions of plant growth and soil parameters.

In agriculture, there is a constant search for increased productivity, which leads to increased use of fungicides, insecticides, and inoculants, among other products to perform seed treatment before planting. After treatment, the machines and equipment are sanitized, generating a liquid residue with potentially negative environmental impacts.

Tricyclazole is a fungicide, widely used to control the blast disease of paddy. Parboiling, a step involved in the post-harvest processing of rice, releases fungicide residues, which enter water bodies and eventually reach aquatic organisms like fish. A preliminary analysis of the parboiled rice mill effluent showed the presence of the fungicide, Tricyclazole. In the present study, a 120-h bioassay was conducted to evaluate the effect of tricyclazole on A.

Heavy metal toxicity to plants can be lessened by adding soil amendments like nano-zeolite (NZ) and biochar (BC). The goal of the current research was to determine how BC and NZ may be used to reduce Pb toxicity in wheat (Triticum aestivum L.).

The wet procedure is one of the prominent methods to produce phosphoric acid but unfortunately, remains the undesired components such as heavy metals in the final product. The aim of this work is to employ 4A zeolite adsorbent for the adsorption of lead and arsenic from the wet-process phosphoric acid. The Taguchi methodology was used to improve the processing quality and optimize design factors.

Wadi El Natrun is an elongated narrow depression in the Western Desert of Egypt. The depression characterized by many ancient alkaline salt lakes. These lakes are filled with water in winter and dried up in summer. Recently, some lakes become permanently dried, while others become submerged throughout the year as El Bieda Lake. El Bieda Lake has undergone ecological changes due to the prolonged extraction of minerals and the continual discharging of freshwater.

Biochar is an attractive and environmental friendly heavy metal sorbent, but is full-scale application is usually restricted by the limited sorption sites and surface area. Phosphate groups could strongly complex with heavy metal ions. Therefore, in the present study, phytic acid (PA) modified biochar (P-WBC) was prepared via the hydrolysis carbonization of wheat straw and PA at 300 °C and 700 °C.

Heavy metals are natural components that are formed as a result of biotic activities, accumulate in the ecosystem because they cannot be biodegraded, and thus cause environmental stress.

Assessment of heavy metal (HM) transfer across the food chain has attracted much interest. This study investigated the trophic transfer and toxicokinetics of lead (Pb) and zinc (Zn) in the soil-barley-aphid-ladybird system. At the following rates of 0, 5, 10, 20, and 40% (w/w), sewage sludge from the wastewater treatment plant was applied to the soil.

Industrial and pharmaceutical activities are contributing to global environmental contamination. These pollutants having various physicochemical properties are harmful to aquatic organisms and ecosystems. Among daily discharged pollutants, heavy metals can be removed from wastewater by sorption process using natural clay minerals. Quick clays (QCs) are unique glaciomarine clays with unstable structures contributing to their high cation exchange affinity.

This work aims to propose a new approach for enhancement the reclamation of soil spiked with metal ions, specifically lead and chromium by applying electro-kinetic method. Different tests were carried out on Iraqi silty clay soil that had been polluted with either lead or chromium in concentration of 1500 mg/kg (single system) and in the form of binary system consisted of lead and chromium at concentrations of 750 mg/kg for each metal.

In this work, after carbonization of two biomass wastes, rice husk and coconut husk, they were modified by hydrothermally synthesized cryptomelane manganese and prepared into a solar interfacial evaporation system to explore their evaporation performance and stabilization performance of cadmium. The results demonstrate that the cryptomelane-modified biochar can obtain an evaporation rate of 1.247 kg m−2 h−1 and a photothermal conversion efficiency of 89.36% under one sun (1 kW m−2).

Ni and Cd are widely used together in the manufacture of cells and batteries. The incorrect disposal of these products can result in environmental contamination, posing risks to the organisms exposed to these contaminants. However, the effects of the mixture of Ni and Cd in freshwater fishes are still unclear in the current literature, especially in relation to biomarkers of oxidative stress.

Cadmium (Cd) is an unessential metal for plants that is popular in agricultural soil due to the activities of humans, such as urban refuse, phosphate fertilizers, and polluted irrigation water. Cd poses a severe threat to human health; therefore, remediation and prevention of Cd accumulation in plants on Cd-contaminated soils are required. The study was conducted by using the coupled impact of microorganisms (Trichoderma sp.

The irrational use of pesticides has raised a negative influence on the environment and food security. Therefore, it is imperative to comprehend the current status of pesticide residues in the soil for agricultural production and their impact on the ecological environment.

Heavy metals are defined by their high atomic mass. When essential to organisms, metal presence improves plant development; if nonessential, metal presence is toxic. This study aimed to evaluate the biological effects of heavy metals (copper, lead, nickel, aluminum, and cadmium) on Lactuca sativa germination, growth, cytogenotoxicity, and physiology. Seeds of L.

The current development model of the agricultural sector in Brazil has considerable potential to cause negative environmental impacts, including the pollution of aquatic ecosystems, as it may contribute to the intensification of erosive processes on deforested soils, to the leaching of eroded materials, and to the consequent siltation of waterbodies with soil particles containing environmental pollutants.

This study investigated several pre-treatments as strategies to increase the efficacy of the removal of metals when using exopolymeric substances (EPS) produced by Bacillus cereus. The pre-treatments used include heat (autoclaving, boiling) and chemical agents (sulphuric acid, sodium hydroxide, and methanol).

Biochar, as a sustainable amendment, effectively remediates soils contaminated with potentially toxic metals. However, the immobilization efficiencies of biochar can vary according to the soil properties.

This study aimed to explore the possibility of “repairing while producing” Cd-contaminated limestone soil and to investigate the combined effect of biochar-Sedum plumbizincicola. A pot experiment was conducted to examine the effect of Cd-contaminated limestone soil remediation and Cd absorption by Lactuca sativa. Six treatments were examined: monocropping of Lactuca sativa and intercropping of Lactuca sativa with Sedum plumbizincicola in Cd-contami

Soil leaching is a viable technology to achieve rapid remediation and reuse of contaminated sites. However, there is still a need to find leaching reagents that can achieve high removal rates of heavy metals with low environmental impact. Based on this, single and combined reagents were used to leach contaminated soil.

The use of waste as a material that can be useful in other areas can reduce both waste generation and the need for resources. Welding powder with high heavy metal content should be used for other purposes. For this reason, the welding powder, which is frequently used in the metal industry and released after the welding process, is desired to be used as an agent against microorganisms in this study. Several biological activities of welding powder and its sintered forms also investigated.

This research was focused on the eco-friendly treatment of deep-sea mining tailings in the sea areas and mainly dealt with evaluating the optimal conditions by comparing aluminum sulfate (AS), which had been proven recently to have an effect as a heavy metal extractant, with ethylenediaminetetraacetic acid (EDTA) in terms of environmental and economic feasibility.