scholarly journals Contamination and health risk assessment of instant noodles by heavy metals from commercial outlets in Windhoek, Namibia

2021 ◽  
Vol 21 (07) ◽  
pp. 18245-18260
Author(s):  
Omotayo Awofolu ◽  
◽  
FIS Kakoma
Keyword(s):  
Heavy Metals ◽  
Human Health ◽  
Health Risks ◽  
Risk Index ◽  
Target Hazard Quotient ◽  
Toxic Heavy Metals ◽  
Human System ◽  
Mean Concentration ◽  
Instant Noodle ◽  
Instant Noodles

With growing international trade, food safety has emerged as an important global human health issue. One of the pathways by which extraneous contaminants such as toxic heavy metals access the human system is through food ingestion. At above permissible levels, these metals pose serious danger to human health. Cultivated farm produce on contaminated soil has the propensity to uptake and accumulate such contaminants. In this study, the prevalence and possible human health risks of toxic heavy metals such as Zinc, Cadmium, Copper, Lead, and Arsenic (Zn, Cd, Cu, Pb and As) in selected Instant Noodle Brands (INBs) from commercial outlets in Windhoek, Namibia was carried out. Different brands of instant noodle samples were purchased from four different commercial outlets for four periods with one-month interval. A total of 48 samples were collected and analysed for the level of heavy metals using mineral acid digestion method. Quantification of analysed metals in digested samples was done using Inductive Coupled Plasma -Optical Emission Spectrometer (ICP-OES). The mean concentration of heavy metals in the digested instant noodle samples across the sampling periods ranged from 13.1 – 17.9 mg/kg with overall mean concentration of 14.6mg/kg; 0.05 – 0.5mg/kg with overall mean level of 0.15 mg/kg; 1.5 – 2.4 mg/kg with overall mean concentration of 1.9 mg/kg; ND – 1.3 mg/kg with overall mean level of 0.4 mg/kg and 2.3 – 3.8 mg/kg with overall mean concentration of 1.4 mg/kg for Zn, Cd, Cu, Pb and As, respectively. A strong correlation (r = 0.99) was obtained between Zn and Cd levels but average correlation (r = 0.56) between Cd and Cu as well as between Cu and As (r= 0.55). Target Hazard Quotient (THQ) values greater than 1 (one) was obtained for Pb (1.7) and As (7.3). In addition, Carcinogenic Risk Index (CRI) values of 0.71 and 0.02 were also obtained for Pb and As, respectively. Of great concerns are the potential development of non-carcinogenic health effects and carcinogenic health risks with respect to these two toxic metals. Both metals are of no physiological benefits to the human system and very toxic at low levels. Hence, proper quality assurance protocol and monitoring of the level of toxic heavy metals in instant noodles products is recommended.

scholarly journals Human Health Risks Assessment of Some Heavy Metals in Oreochromis niloticus from a Tropical Reservoir

10.4194/afs35 ◽  
2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Adefemi Ajibare ◽  
Peter Ogungbile ◽  
Patrick Ayeku ◽  
John Akande
Keyword(s):  
Health Risk ◽  
Human Health ◽  
Health Risks ◽  
Oreochromis Niloticus ◽  
Hazard Quotient ◽  
Risk Index ◽  
Target Hazard Quotient ◽  
Tropical Reservoir ◽  
Health Risk Index ◽  
Human Health Risks

This study evaluated the human health risks of Mn, Fe, Zn, Cu, Cd, Pb, Cr, Co and Ni in Oreochromis niloticus inhabiting Agodi reservoir in Ibadan, Nigeria. The metals’ concentrations were determined with atomic absorption spectrophotometer. Carcinogenic and non-carcinogenic risk of consumers from the intake of metals in the fish was evaluated by Health Risk Index (HRI), Health quotient (HQ) Target Hazard Quotient (THQ) and Target cancer risk (TR). The metal concentrations in the fish were below the recommended limit by Environmental Protection Agencies. HRI and HQ of each examined metal was greater than one, indicating that there was potential noncarcinogenic health risk associated with the consumption of the fish. However, the THQ and TR were less than one. This indicated that Oreochromis niloticus will not pose any immediate carcinogenic threat to its consumers. It is therefore recommended that only eco-friendly activities should be permitted in/around aquatic ecosystems especially Agodi reservoir in order to keep contaminants below safety limit.

scholarly journals Black Sea Whiting: Assessment of Potential Health Benefits/Risks and Differences Based on Mineral Concentrations of Meat and Roes

2019 ◽  
Vol 7 (12) ◽  
pp. 2075 ◽  
Author(s):  
Hülya Turan ◽  
Can Okan Altan ◽  
Demet Kocatepe
Keyword(s):  
Heavy Metals ◽  
Human Health ◽  
Health Risks ◽  
Metal Pollution ◽  
Hazard Quotient ◽  
Target Hazard Quotient ◽  
Pollution Indices ◽  
Potential Health ◽  
Limit Values ◽  
Human Health Risks

In this study; the human health risks of whiting meat and roes, which are frequently consumed in Turkey were evaluated in terms of minerals and heavy metals. The potential of human health risks according to consumption of whiting meats and roes were assessed by estimating of Metal Pollution Index (MPI), Estimated Weekly Intake (EWI), Target Hazard Quotient (THQ), Total Target Hazard Quotient (TTHQ) levels of heavy metals. The Cd, Hg and Pb results found in the roes were lower than the acceptable limits identified by Turkish Codex. The results showed that the investigated fish meat’s Pb levels were higher than the limit values except from in April and May. The highest Cd content was 0.22 mg.kg-1 in whiting meat in December while the lowest Cd content was 0.03 mg.kg-1 in May. The maximum value of metal pollution indices (MPI) was determined as 0.44 for whiting meat and 0.66 for roes in March. The THQ values of whiting meat and roes were lower than 1 for six months. However, the TTHQ values of whiting meat in February and March were higher than 1 indicating health risk for the consumer by consuming whiting meat.

Assessment of seasonal variations and human health risks due to heavy metals in water, soils and food crops using multi-indices approach

2021 ◽  
Vol 80 (11) ◽  
Author(s):  
Salwinder Singh Dhaliwal ◽  
Raj Setia ◽  
Vinod Kumar ◽  
Tapan Ghosh ◽  
Sagar Taneja ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Human Health ◽  
Health Risks ◽  
Seasonal Variations ◽  
Food Crops ◽  
Human Health Risks

Risk Assessment of Some Heavy Metals in Two Fish Species Oreochromis Niloticus and Clarias Gariepinus from Sharqia Province, Egypt

2021 ◽  
Vol 8 (1) ◽  
pp. 1-5
Author(s):  
Nahla S El-Shenawy ◽  
Heba N Gad EL-Hak ◽  
Mahi A Ghobashy ◽  
Maha FM Soliman ◽  
Farida A Mansour ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Human Health ◽  
Health Risks ◽  
Oreochromis Niloticus ◽  
Clarias Gariepinus ◽  
Human Health Risk ◽  
Dry Weight ◽  
Critical Problem ◽  
Potential Health

Accumulation of heavy metals in fish is considered a critical problem for human health. Therefore, the study aimed to quantify the concentrations of iron (Fe), zinc (Zn), manganese (Mn), and lead (Pb) in Oreochromis niloticus and Clarias gariepinus from two areas in Al Sharqia governorate, Egypt, from September 2017 to August 2018. A human health risk assessment was conducted to evaluate the potential hazards associated with fish consumption. Metals concentrations (mg/kg dry weight) in muscles of catfish ranged 1.88-221.26 for Fe; 1.78-19.77 for Zn; BDL-238.51 for Mn; BDL-22.75 for Pb. In muscles of tilapia fish metals concentrations ranged 7.96-149.10 for Fe; 1.20-19.77 for Zn; BDL-230.82 for Mn; BDL-25.93 for Pb. Pb had Hazard quotients (HQs) which indicated potential health risks to tilapia consumers at both study areas and catfish consumers at the Faqous area. Fishermen were at higher risk compared to the other consumers.

scholarly journals Potential Human Health Risks of Tannery Waste-contaminated Poultry Feed

2015 ◽  
Vol 5 (9) ◽  
pp. 68-77 ◽  
Author(s):  
Mohammad Latiful Bari ◽  
Hasina Akhter Simol ◽  
Nusrat Khandoker ◽  
Rokeya Begum ◽  
Ummay Nasrin Sultana
Keyword(s):  
Heavy Metals ◽  
Health Risk ◽  
Human Health ◽  
Health Risks ◽  
Daily Intake ◽  
Poultry Feed ◽  
Tannery Waste ◽  
Cr Content ◽  
Edible Parts ◽  
Potential Human Health

Background. For over a decade, solid tannery waste has been converted into protein concentrate and used as a feed ingredient because of its cheap availability. However, as chromium sulfate is commonly used in the tanning process, the chromium (Cr) content of tanned skin-cut wastes (SCW) may enter the edible parts of poultry through feed. Therefore, there is a chance that Cr and other heavy metals may be present in the edible portion of poultry and consequently transfer to humans upon poultry consumption. Objectives. In this study, skin-cut wastes (SCW)-based poultry feed and the edible parts of chicken fed with this feed were analyzed to understand the potential health risks of their use as poultry feed. Methods. In the present study, the presence of heavy metal content in SCW, poultry feed, and edible portions of different kinds of chicken was determined using atomic absorption spectrophotometer methods and the associated health risk estimation was calculated by comparing the target hazard quotient (THQ) value and reference daily intake value. Results. The results revealed the presence of Cr content ranging from 0.12–3.11 mg/kg and lead (Pb) content ranging from 8.06–22.0 mg/kg in SCW. In addition, Cr and Pb were present in the range of 0.27–0.98 mg/kg and 10.27–10.36 mg/kg, respectively, in poultry feed. However, no cadmium (Cd) was found in SCW, but the presence of Cd ranged from 0.03–0.05 mg/kg in feed. When contaminated poultry feed was fed to live poultry, the presence of Cr, Pb and Cd was observed in the edible portions (i. e. skin, liver, gizzard, and meat). Irrespective of the edible parts and chicken type, Cr values ranged from 0.1–2.440 mg/kg; Pb values ranged from 0.257–1.750 mg/kg; and Cd values ranged from below detection limit (BDL) to 0.037 mg/kg. Conclusions. The estimated daily intake value, THQ, along with the aggregate hazard index value, indicated a potential risk to consumers through consumption of contaminated chicken. Therefore, the study results clearly demonstrate heavy metals accumulation in chicken due to feeding SCW-based feed. The contaminated chicken further transfers these heavy metals to humans through ingestion. Hence, there is a potential human health risk through consumption of contaminated chicken meat.

scholarly journals Seasonal Variation of Metallic Contamination of Water and Sediments in Navigation Canal and Industrial Zone South Port Said, Egypt

2018 ◽  
pp. 1-12
Author(s):  
Nabil, A. E. Azzaz ◽  
Mokhtar, S. Beheary ◽  
Mohamed, N. Raslan ◽  
Hazem T. Abd El Hamid
Keyword(s):  
Heavy Metals ◽  
Risk Index ◽  
Winter Season ◽  
Contamination Factor ◽  
Pollution Load Index ◽  
Industrial Zone ◽  
Sediment Samples ◽  
Accumulation Index ◽  
Port Said ◽  
Mean Concentration

In the present study, water and sediment samples were collected from Navigation Canal and from Industrial Zone South Port Said to assess heavy metals contamination. It was shown that, the highest mean concentration of heavy metals in water samples was observed in summer, and the lowest mean was observed in winter. It has been made evident that the industrialization in Industrial Zone South Port Said was responsible for the present deteriorating conditions. However, it was shown that, the highest mean concentration of heavy metals in sediment samples was observed in winter, and the lowest mean was observed in summer. Pollution status was evaluated using some indices: geo-accumulation index (Igeo), contamination factor (CF), pollution load index (PLI) and ecological risk index (RI). Based on Igeo, all metal values were unpolluted. On the basis of the values of CF, sediments are high in winter and low in summer. Metals concentrations were in the following order: Ni > Fe > Mn > Pb > Cu > Zn > Co > Cd. According to CF classification, Ni contamination was considerable. RI of winter season can be classified as moderate pollution. No pollution was classified for PLI in all seasons. The decrease in PLI and RI values were indicated dilution and dispersion of metal content with increasing distance from source areas. It is suggested that PLI can give an indication about the trend spatially and temporarily. In addition, it also provides significant data and advice to the policy and decision makers on the contamination degree of the area.

Sign in / Sign up

Export Citation Format

Share Document