Toxicological parameters of aqueous residue after using Plectranthus neochilus for 2,4-D phytoremediation

Chemosphere ◽  
2020 ◽  
pp. 128638
Author(s):  
Bruna Piaia Ramborger ◽  
Maria Elizabeth Gomes Paz ◽  
Ketelin Monique Cavalheiro Kieling ◽  
Murilo Ricardo Sigal Carriço ◽  
Gabriel de Paula Gollino ◽  
...  
Keyword(s):  
2020 ◽  
Vol 14 (4) ◽  
pp. 295-311
Author(s):  
Ada Gabriel ◽  
Mamman Mohammed ◽  
Mohammed G. Magaji ◽  
Yusuf P. Ofemile ◽  
Ameh P. Matthew ◽  
...  

Background: Snakebite envenomation is a global priority ranked top among other neglected tropical diseases. There is a folkloric claim that Uvaria chamae is beneficial for the management of snakebite and wounds in African ethnobotanical surveys. Besides, there are many registered patents asserting the health benefits of U. chamae. Objective: This study aimed to investigate U. chamae’s potentials and identify candidates for the development of tools for the treatment and management of N. nigricollis envenomation. Methods: Freshly collected U. chamae leaves were air-dried, powdered, and extracted in methanol. The median lethal dose of the extract was determined and further fractionated with n-hexane, n-butanol and ethyl acetate. Each fraction was tested for neutralizing effect against venom-induced haemolytic, fibrinolytic, hemorrhagic, and cytotoxic activities. Results: U. chamae fractions significantly (p<0.05) neutralized the haemolytic activity of N. nigricollis venom in n-butanol; 31.40%, n-hexane; 33%, aqueous residue; 39.60% and ethyl acetate; 40.70% at the concentration of 100mg/ml of each fraction against 10mg/ml of the snake venom when compared to the positive control. The fibrinolytic activity of N. nigricollis venom was significantly (p<0.05) neutralized in n-hexane at 73.88%, n-butanol; 72.22% and aqueous residue; 72.22% by the fractions of U. chamae. In addition, haemorrhagic activity of N. nigricollis venom was significantly (p<0.05) neutralized by U. chamae fractions at the concentrations of 100mg/ml, 200mg/ml and 400mg/ml except for n-butanol and aqueous residues at 400 mg/ml. Conclusion: U. chamae leaves fractions possess a high level of protection against N. nigricollis venoms-induced lethality and thus validate the pharmacological rationale for its usage in the management of N. nigricollis envenomation.


2011 ◽  
Vol 48 (2) ◽  
pp. 405-410 ◽  
Author(s):  
Hye-Mi Park ◽  
Junheon Kim ◽  
Kyu-Sik Chang ◽  
Byung-Seok Kim ◽  
Yu-Jung Yang ◽  
...  

2019 ◽  
Vol 20 (4) ◽  
pp. 137-141
Author(s):  
Shuji ADACHI ◽  
Jose Antonio FERMIN JIMENEZ ◽  
Hermawan Dwi ARIYANTO ◽  
Yayoi MIYAGAWA ◽  
Hidefumi YOSHII

2020 ◽  
Author(s):  
Nawres Gharred ◽  
Noureddine Baaka ◽  
Nadir Bettache ◽  
Assia Hamdi ◽  
Amal Dbeibia ◽  
...  

Abstract The release of aqueous residues generated by the extraction process of essential oils presents a real risk of environmental pollution. This work aims to reduce this risk and produce value-added materials. The aqueous residue of Dittrichia graveolens (D. graveolens) hydrodistillation has been reused in two valorization ways: 1/ in the ecological dyeing. 2/ in biological field. First, a phytochemical study of the aqueous residue was carried out by determining the ployphenols and flavonoids content and high performance liquid chromatography (HPLC) analysis. Second, the eco-dyeing process with the aqueous residue was performed on the polyamide fabric, the process was optimized by the surface response methodology using Minitab software and was evaluated by the fastness tests for the optimal conditions. Third, the aqueous residue was assessed for its biological activities. Promising coloring power and biological potential of the aqueous residue showed that this last could be an important source for developing environmentally friendly natural dyes and bioactive products.


Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2067
Author(s):  
Noor Zafirah Ismail ◽  
Zaleha Md Toha ◽  
Musthahimah Muhamad ◽  
Nik Nur Syazni Nik Mohamed Kamal ◽  
Nur Nadhirah Mohamad Zain ◽  
...  

Clinacanthus nutans is a well-known herb that has been used as an alternative and therapeutic medicine, however more selective C. nutans extracts are needed. In this study, leaves were extracted with 80% methanol and further fractionated with n-hexane, dichloromethane, chloroform, n-butanol, and aqueous residue. Subsequently, the total phenolic content (TPC), total flavonoid content (TFC), antioxidant scavenging activity, and antiproliferative effects on breast cancer (Michigan Cancer Foundation-7 [MCF7]) and normal breast (Michigan Cancer Foundation-10A [MCF 10A]) cells of the extracts were measured. Additionally, molecular docking simulation of the major compounds from C. nutans extracts was conducted. The aqueous residue had the highest TPC and TFC, whereas the crude extract had the highest scavenging activity. Among the extracts, dichloromethane extract (CN-Dcm) was selected as it had the highest selectivity index (SI) (1.48). Then, the chosen extract (CN-Dcm) was proceed for further analysis. The compounds from CN-Dcm were identified using gas chromatography–mass spectrometry (GC-MS). The major compounds from CN-Dcm were further investigated through molecular docking studies. Palmitic acid and linolenyl alcohol were the compounds found in the CN-Dcm extract that exhibited the highest binding affinities with p53-binding protein Mdm-2. These results highlight the potential of C. nutans as a source of anticancer activities.


2004 ◽  
Vol 176 (7) ◽  
pp. 1117-1152 ◽  
Author(s):  
P. T. LACAVA ◽  
A. P. PIMENTA ◽  
J. A. CARVALHO ◽  
M. A. FERREIRA

2019 ◽  
Vol 20 (3) ◽  
pp. 115-119
Author(s):  
Shuji ADACHI ◽  
Yayoi MIYAGAWA ◽  
Hidefumi YOSHII
Keyword(s):  

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