scholarly journals Physico-Chemical Evaluation and Hematological Responses in <i>Clarias gariepinus</i> (Burchell 1822) Juveniles Exposed to <i>Adenium obesum</i> Stem Bark Acute Bioassay

2020 ◽  
Vol 10 (02) ◽  
pp. 43-54
Author(s):  
B. O. Muyiwa ◽  
N. S. Emmanuel ◽  
F. M. Yahuza ◽  
M. Aliyu ◽  
C. U. Inegbenosun ◽  
...  
Keyword(s):  
Clarias Gariepinus ◽  
Stem Bark ◽  
Chemical Evaluation ◽  
Physico Chemical ◽  
Acute Bioassay

scholarly journals Physico-chemical evaluation of Rosmarinus officinalis L. essential oils

2005 ◽  
Vol 48 (6) ◽  
pp. 1035-1039 ◽  
Author(s):  
Ana Cristina Atti-Santos ◽  
Marcelo Rossato ◽  
Gabriel Fernandes Pauletti ◽  
Luciana Duarte Rota ◽  
Juarez Ciro Rech ◽  
...  
Keyword(s):  
Steam Distillation ◽  
Optical Rotation ◽  
Volatile Oil ◽  
Rosmarinus Officinalis ◽  
Chemical Compositions ◽  
Chemical Parameters ◽  
Alpha Pinene ◽  
Chemical Evaluation ◽  
Physico Chemical ◽  
Rosmarinus Officinalis L

Nineteen samples of Rosmarinus officinalis were extracted by steam distillation in a pilot plant and evaluated in terms of chemical compositions and physico-chemical characteristics. The volatile oil yields ranged from 0.37% (1999 harvest) to 0.49% (1998 harvest). Twenty components were identified in the oils. The major components were alpha-pinene (40.55 to 45.10%), 1,8-cineole (17.40 to 19.35%), camphene (4.73 to 6.06%) and verbenone (2.32 to 3.86%). The physico-chemical parameters averaged 0.8887 g/cm³ for specific gravity, 1.4689 for refractive index, and +11.82° for optical rotation, and there were no significant variations in either the chemical or physico-chemical data in the different years.

scholarly journals Physico-Chemical Evaluation of Rationally Designed Melanins as Novel Nature-Inspired Radioprotectors

PLoS ONE ◽  
2009 ◽  
Vol 4 (9) ◽  
pp. e7229 ◽  
Author(s):  
Andrew D. Schweitzer ◽  
Robertha C. Howell ◽  
Zewei Jiang ◽  
Ruth A. Bryan ◽  
Gary Gerfen ◽  
...  
Keyword(s):  
Chemical Evaluation ◽  
Physico Chemical

scholarly journals Taxanes Hybrid Nanovectors: From Design to Physico-Chemical Evaluation of Docetaxel and Paclitaxel Gold (III)-PEGylated Complex Nanocarriers

2017 ◽  
Vol 35 (2) ◽  
pp. 1700299 ◽  
Author(s):  
Gwendolyn Marguerit ◽  
Hanane Moustaoui ◽  
Maroua Ben Haddada ◽  
Nadia Djaker ◽  
Marc Lamy de la Chapelle ◽  
...  
Keyword(s):  
Chemical Evaluation ◽  
Physico Chemical

scholarly journals Liver histopathological changes in Clarias gariepinus exposed to ethanol extract of Adenium obesum stem bark

2015 ◽  
Vol 32 (01) ◽  
pp. 022-028 ◽  
Author(s):  
S. Abalaka ◽  
M. Fatihu ◽  
N. Ibrahim ◽  
S. Ambali
Keyword(s):  
Clarias Gariepinus ◽  
Ethanol Extract ◽  
Exposure Period ◽  
Stem Bark ◽  
Aquatic Environments ◽  
Median Lethal Concentration ◽  
Exposed Fish ◽  
Range Finding ◽  
Serum Aspartate Aminotransferase ◽  
Histopathological Effects

Abstract Introduction: Histopathological effects of ethanol extract of Adenium obesum stem bark on the liver of Clariasgariepinus was investigated over a 96-h exposure period as an effective organic piscicide. Materials and Methods: An acute static toxicity bioassay was performed after a preliminary concentration range finding test was conducted. Results: Exposed fish showed adaptation behavioural changes with those of respiratory distress and abnormal nervous signs of toxicity, which was concentration-dependent. Mortality was recorded in some of the exposed fish while a median lethal concentration of 7.15 mgL-1 was established for the extract in the exposed fish. Non-significant (p>0.05) changes were recorded in serum aspartate aminotransferase, alanine aminotransferase and alkaline phosphatase activities of the exposed ish. Moderate liver damage was observed in the exposed fish based on the degree of tissue change (DTC) grading where significant (p<0.05) differences were observed between the DTC of the exposed groups and the control. Conclusion: Ethanol extract of A. obesum stem bark was toxic to the exposed fish with evidence of hepatotoxicity and therefore, can be used to eradicate the hardy C.gariepinus from aquatic environments.

Ecotoxicological assessment of commercial glyphosate-based di-ammonium salt formulation on haematological indices of Clarias gariepinus

2021 ◽  
Vol 36 (1) ◽  
pp. 13-21
Author(s):  
A.B. Ella ◽  
E.T. Azua ◽  
C.U. Aguoru ◽  
A.A. Onekutu ◽  
F.A. Ella
Keyword(s):  
Blood Cell ◽  
Clarias Gariepinus ◽  
Haemoglobin Concentration ◽  
Negative Consequences ◽  
Ecotoxicological Assessment ◽  
Corpuscular Haemoglobin ◽  
Physico Chemical ◽  
Haematological Profile ◽  
Mean Corpuscular Haemoglobin ◽  
Total Dissolved Solid

The study evaluated sub-lethal toxicity of commercial glyphosate-based Di-ammonium formulation commonly known as ‘Touchdown’ on haematological profile of Clarias gariepinus juveniles. A total of two hundred catfish juveniles of mean weight 31.07±1.23g and mean length 19.50 ± 0.50cm were exposed to different  concentrations of Di-ammonium formulation (1.26, 2.52, 5.03 and 0.00 mg/l) for eight (8) weeks. Each concentration was treated in triplicate using a static bioassay system. Physico-chemical parameters of the test water were monitored throughout the study period. Results showed that haematocrit (HCT), red blood cell (RBC), haemoglobin (HGB), Mean Corpuscular Volume (MCV), Mean Corpuscular Haemoglobin (MCH), Mean Corpuscular Haemoglobin Concentration (MCHC) and Platelets (PLT) counts decreased significantly (p<0.05) with increase in concentrations of Touchdown. Whereas, white blood cell (WBC) counts increased significantly (p<0.05) with increasing concentrations of the glyphosate-based formulation. Water temperature, pH, Total dissolved solid (TDS) and electrical conductivity (EC) increased linearly with increasing concentration, while dissolved oxygen content decreased significantly (p<0.05). The results from this study indicated that Di-ammonium glyphosate–based formulation had negative consequences on the blood of treated fish. In view of this, the application of Di-ammonium glyphosate-based formulation should be done in a sustainable manner with proper regulations.

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