Moringa oleifera: A new challenge reducing heavy metal toxicity: A review

Author(s):  
Kanitta Jiraungkoorskul ◽  
Wannee Jiraungkoorskul

Various parts of Moringa oleifera i.e., fruit, seed, leave, flower, bark, and root, have been used extensively in traditional medicine. One of these usages is the reducing of heavy metal toxicity. The mechanism of metal removal property by using the characteristic of its surface morphology and functional groups to uptake the heavy metal. Moreover this plant reduced the metal toxicity in living organism by its antioxidant properties. The advantage utilization of this plant is very interesting as it can easily be cultivated worldwide. Its biosorbent properties are inexpensive, availability, profitability easy of operation, effectiveness in reducing the concentration of heavy metal ions to very low levels. Besides, this plant is reported to have various chemical constituents that have the biological activities including the depletion of metal concentration and the antioxidant properties that are potential to reduce the oxidative stress induced by heavy metal.


2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Precious Barnes ◽  
Joshua Kwame Yeboah ◽  
Wilson Gbedema ◽  
Roland Osei Saahene ◽  
Benjamin Amoani

Heavy metal toxicity contributes to liver and kidney dysfunction and damage through oxidative stress mechanisms; however, from previous studies, extracts from the Vernonia amygdalina plant have shown to possess potent antioxidant properties. This study was aimed at uncovering the potential ameliorative effects of ethanolic extract from Vernonia amygdalina plant in heavy metal toxicity-induced liver and kidney dysfunction. For this study, 44 Sprague Dawley rats were divided into three groups. The control group received a basal diet and water only while the treatment groups received varied dosages of the heavy metals. The copper (Cu) and lead (Pb) groups had five subgroups. The Cu only and Cu recovery subgroups were administered with 16 mg/kg Cu intraperitoneally daily for 14 days, whereas the Pb only and Pb recovery subgroups were administered with 13 mg/kg Pb intraperitoneally daily for 14 days. Subsequently, the Pb only and Cu only subgroups were sacrificed. The three Pb and Cu treatment subgroups received oral graded doses (100 mg/kg, 200 mg/kg, and 300 mg/kg) of the extract for 21 days. The Cu recovery and Pb recovery subgroups were left to recover for 21 days. After histological examinations, the Pb and Cu pretreatment groups showed evidence of focal necrosis accompanied by inflammatory cell infiltrations. The serum levels of liver biomarkers AST, ALT, and GGT, as well as urea and creatinine, were significantly elevated (P=0.01) following copper and lead exposure. Upon posttreatment of the rats with the extract, the physiological levels of the biomarkers were restored and tissue architecture of the organs improved. Thus, the ethanolic extract of Vernonia amygdalina is capable of ameliorating the effects of heavy metal toxicity through potent antioxidative mechanisms.



2014 ◽  
Vol 21 (15) ◽  
pp. 9278-9286 ◽  
Author(s):  
Fei Wang ◽  
Jun Yao ◽  
Huilun Chen ◽  
Zhengji Yi ◽  
Chan Yu ◽  
...  


2018 ◽  
Vol 150 ◽  
pp. 02008 ◽  
Author(s):  
Eman N. Ali ◽  
Hong Tien Seng

The consumption of water nowadays is increasing and the wastewater from variety of industry and domestic are increasing as well. If this wastewater is being untreated, it will be wasted and the chemicals inside the water especially heavy metal are harmful to the living organism. There are few conventional method used to treat the wastewater but most of them are costly, hence, natural coagulant is introduced in this study. One of the multipurpose tree Moringa oleifera, (MO) which is environmental friendly and low cost become a choice for removal of heavy metal from wastewater. The Moringa oleifera press cake (MOPC) are able to remove the heavy metal but the removal efficiency for different metals need to be investigated. Therefore, experiment on heavy metal removal by Moringa oleifera press cake was conducted. The wastewater samples and MOPC were collected from Balok River, Kuantan and Mitomasa Sdn. Bhd, Kuala Lumpur respectively. MOPC was immersed in distilled water to remove the oil and different concentration of MOPC solution were made. Jar test were carried out with different concentration of MOPC solution. The initial and final heavy metal (Fe, Cu, and Cr) concentration were measured by Atomic Absorption Spectrometer and the removal percentage was calculated. The MOPC removed 69.99% Fe, 88.86 % Cu and 93.73% Cr at optimum concentration of 10000 ppm, 5000 ppm and 15000 ppm, respectively. The MOPC also reduced 34.94% of COD and 81.6 % of turbidity. However, BOD of wastewater increased from 9.0 ppm to 18.3 ppm. The pH values was not changed with the addition of MOPC. The removal of heavy metal was increased proportionally with MOPC concentration until optimum removal was obtained.





Chemosphere ◽  
2021 ◽  
Vol 271 ◽  
pp. 129458
Author(s):  
Sheikh Mansoor ◽  
Navneet Kour ◽  
Sweeta Manhas ◽  
Sheikh Zahid ◽  
Owais Ali Wani ◽  
...  


1987 ◽  
Vol 33 (6) ◽  
pp. 551-554 ◽  
Author(s):  
Ken F. Jarrell ◽  
Michelle Saulnier ◽  
Art Ley

The effect of ammonium chloride, sodium butyrate, sodium propionate, and the heavy metals nickel, zinc, and copper on methanogenesis by pure cultures of Methanospirillum hungatei, Methanosarcina barkeri, Methanobacterium thermoautotrophicum, and Methanobacterium formicicum at pH 6.5 was studied. The latter three strains were resistant to > 60 g/L of the volatile fatty acids and to > 10 g/L of NH3 N. Methanospirillum hungatei was somewhat more sensitive with 50% inhibition of methanogenesis occurring at 4.2 g/L NH3 N, 27 g/L butyrate, and 41 g/L propionate. All strains were very sensitive to both copper (1–5 mg/L) and zinc (1–10 mg/L), but much more resistant to nickel. Zinc and copper concentrations 30 to 270 times higher were required to cause inhibition of Msp. hungatei incubated in sewage sludge compared with buffer, indicating a strong protective environment was afforded the methanogens against heavy metal toxicity in the sludge.





2017 ◽  
Vol 33 (7) ◽  
pp. 684-693 ◽  
Author(s):  
Tuo Liu ◽  
Ruilin Wang ◽  
Hui Cao ◽  
Aijun Lin


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