Microbial biomass and species in the rhizosphere soil of Mirabilis jalapa（Linn.）（the saline-alkali soil contaminated by total petroleum hydrocarbon（TPH））were studied with the technology of phospholipid fatty ac...Microbial biomass and species in the rhizosphere soil of Mirabilis jalapa（Linn.）（the saline-alkali soil contaminated by total petroleum hydrocarbon（TPH））were studied with the technology of phospholipid fatty acids（PLFAs） analysis,to explore the effects of Mirabilis jalapa（Linn.） growth on the structure characteristics of microbial communities and degradation of TPH in the petroleum-contaminated salinealkali soil.The result showed that compared with the CK soil without Mirabilis jalapa（Linn.）,the kind change rates of PLFAs were 71.4%,69.2% and 33.3% in spring,summer and autumn,respectively,and the degradation of TPH increased by 47.6%,28.3%,and 18.9% in the rhizosphere soil in spring,summer and autumn,respectively.Correlation analysis was used to determine the correlation between the degradation of TPH and the soil microbial communities：77.8% of the microbial PLFAs showed positive correlation（the correlation coefficient r﹥0） with the degradation of TPH,and 55.6% of the PLFAs had high positive correlation with the degradation of TPH with a correlation coefficient r ≥0.8.In addition,the relative contents of SAT and MONO had high correlation with the degradation of TPH in the CK soil,and the correlation coefficients were 0.92 and 0.60,respectively;but in the rhizosphere soil,42.1% of the PLFAs had positive correlation with it,and only21.1% had high positive correlation with the degradation of TPH,the relative contents of TBSAT,MONO and CYCLO had moderate or low positive correlation with the degradation of TPH,and the correlation coefficients were 0.56,0.50 and 0.07 respectively.It was shown that the growth of mirabilis jalapa（Linn.） highly affected the microbial community structure and TPH degradation speed in the rhizosphere soil,providing a theoretical basis for the research on phytoremediation of petroleumcontaminated saline-alkali soil.展开更多
Objective:To investigate the role of Mirabilis jalapa root extracts in restoration of glucose homeostasis in alloxan-induced hyperglycemic Wistar albino rats.Methods:Experimental hyperglycemic rats were treated daily ...Objective:To investigate the role of Mirabilis jalapa root extracts in restoration of glucose homeostasis in alloxan-induced hyperglycemic Wistar albino rats.Methods:Experimental hyperglycemic rats were treated daily with 200 and 400 mg/kg of Mirabilis jalapa extracts after initial fasting for 6 h.Two-hour postprandial glucose and changes in body weight were monitored during treatment.After 14 d,the rats were sacrificed and blood was collected for biochemical assessment of serum glucose and insulin levels,lipid profile,and oxidative stress markers.Histopathological examinations of harvested pancreas were also carried out.Results:Mirabilis jalapa root extracts at 200 and 400 mg/kg increased the body weight of hyperglycemic rats.Postprandial glucose levels of the extract-treated hyperglycemic groups progressively declined during treatment compared with the untreated hyperglycemic control group(P<0.05).The lipid profile indices of the untreated negative control group were significantly elevated(P<0.05),which were reversed by treatment with Mirabilis jalapa extracts.The remarkable increases in antioxidant enzyme activities and a significant decrease in malondialdehyde levels were observed in the hyperglycemic group treated with Mirabilis jalapa extracts.Mirabilis jalapa extracts also significantly increased serum insulin levels(P<0.05).In addition,histopathological examinations of the pancreas revealed a significant cell population within the islet nests of the extract-treated hyperglycemic groups.Conclusions:Mirabilis jalapa extract can restore glucose homeostasis and show hypoglycemic and hypolipidemic effects in hyperglycemic rats.Further studies are needed to verify the active components of the plant and the underlying mechanism of action in the future.展开更多
Mirabilis jalapa (chandrakantha) leaves were used as a biosorbent for the removal of toxic metals ions cadmium (II), chromium (VI) and lead (II) from water. The physiochemical properties of the developed biosorbent we...Mirabilis jalapa (chandrakantha) leaves were used as a biosorbent for the removal of toxic metals ions cadmium (II), chromium (VI) and lead (II) from water. The physiochemical properties of the developed biosorbent were studied using FTIR. The efficiency of this developed biosorbent was tested using batch experiments under controlled conditions such as a function of pH, contact time, initial metal concentration and the optimization amount of biosorbent. The residual metallic ion concentrations of cadmium (II), chromium (VI) and lead (II) were determined using AAS. The biosorption capacity of Mirabilis jalapa was found to be pH dependant and the percentage removal of cadmium (II), chromium (VI) and lead (II) was increased with increasing adsorbate solution pH and a maximum value was reached at an equilibrium pH = 6 for cadmium (II), pH = 5.5 for chromium (VI) and pH 4.5 for lead (II) respectively. The equilibrium time required for the saturation loading of cadmium (II), chromium (VI) and lead (II) in the biosorbent was found to be about 120 min. The obtained equilibrium biosorption data was fitted to the linear forms of Freundlich isotherms. The results proved the efficiency of Mirabilis jalapa leaves powder as biosorbent for the removal of metal ions and it can be used for the development of an efficient, clean and novel technology for waste water treatment.展开更多
文摘Microbial biomass and species in the rhizosphere soil of Mirabilis jalapa（Linn.）（the saline-alkali soil contaminated by total petroleum hydrocarbon（TPH））were studied with the technology of phospholipid fatty acids（PLFAs） analysis,to explore the effects of Mirabilis jalapa（Linn.） growth on the structure characteristics of microbial communities and degradation of TPH in the petroleum-contaminated salinealkali soil.The result showed that compared with the CK soil without Mirabilis jalapa（Linn.）,the kind change rates of PLFAs were 71.4%,69.2% and 33.3% in spring,summer and autumn,respectively,and the degradation of TPH increased by 47.6%,28.3%,and 18.9% in the rhizosphere soil in spring,summer and autumn,respectively.Correlation analysis was used to determine the correlation between the degradation of TPH and the soil microbial communities：77.8% of the microbial PLFAs showed positive correlation（the correlation coefficient r﹥0） with the degradation of TPH,and 55.6% of the PLFAs had high positive correlation with the degradation of TPH with a correlation coefficient r ≥0.8.In addition,the relative contents of SAT and MONO had high correlation with the degradation of TPH in the CK soil,and the correlation coefficients were 0.92 and 0.60,respectively;but in the rhizosphere soil,42.1% of the PLFAs had positive correlation with it,and only21.1% had high positive correlation with the degradation of TPH,the relative contents of TBSAT,MONO and CYCLO had moderate or low positive correlation with the degradation of TPH,and the correlation coefficients were 0.56,0.50 and 0.07 respectively.It was shown that the growth of mirabilis jalapa（Linn.） highly affected the microbial community structure and TPH degradation speed in the rhizosphere soil,providing a theoretical basis for the research on phytoremediation of petroleumcontaminated saline-alkali soil.
基金Institutional Based Research,(TeTFund/DR&D/CE/UNIV/SOKOTO/RP/VOL 1)Usmanu Danfodiyo University,Sokoto.
文摘Objective:To investigate the role of Mirabilis jalapa root extracts in restoration of glucose homeostasis in alloxan-induced hyperglycemic Wistar albino rats.Methods:Experimental hyperglycemic rats were treated daily with 200 and 400 mg/kg of Mirabilis jalapa extracts after initial fasting for 6 h.Two-hour postprandial glucose and changes in body weight were monitored during treatment.After 14 d,the rats were sacrificed and blood was collected for biochemical assessment of serum glucose and insulin levels,lipid profile,and oxidative stress markers.Histopathological examinations of harvested pancreas were also carried out.Results:Mirabilis jalapa root extracts at 200 and 400 mg/kg increased the body weight of hyperglycemic rats.Postprandial glucose levels of the extract-treated hyperglycemic groups progressively declined during treatment compared with the untreated hyperglycemic control group(P<0.05).The lipid profile indices of the untreated negative control group were significantly elevated(P<0.05),which were reversed by treatment with Mirabilis jalapa extracts.The remarkable increases in antioxidant enzyme activities and a significant decrease in malondialdehyde levels were observed in the hyperglycemic group treated with Mirabilis jalapa extracts.Mirabilis jalapa extracts also significantly increased serum insulin levels(P<0.05).In addition,histopathological examinations of the pancreas revealed a significant cell population within the islet nests of the extract-treated hyperglycemic groups.Conclusions:Mirabilis jalapa extract can restore glucose homeostasis and show hypoglycemic and hypolipidemic effects in hyperglycemic rats.Further studies are needed to verify the active components of the plant and the underlying mechanism of action in the future.
文摘Mirabilis jalapa (chandrakantha) leaves were used as a biosorbent for the removal of toxic metals ions cadmium (II), chromium (VI) and lead (II) from water. The physiochemical properties of the developed biosorbent were studied using FTIR. The efficiency of this developed biosorbent was tested using batch experiments under controlled conditions such as a function of pH, contact time, initial metal concentration and the optimization amount of biosorbent. The residual metallic ion concentrations of cadmium (II), chromium (VI) and lead (II) were determined using AAS. The biosorption capacity of Mirabilis jalapa was found to be pH dependant and the percentage removal of cadmium (II), chromium (VI) and lead (II) was increased with increasing adsorbate solution pH and a maximum value was reached at an equilibrium pH = 6 for cadmium (II), pH = 5.5 for chromium (VI) and pH 4.5 for lead (II) respectively. The equilibrium time required for the saturation loading of cadmium (II), chromium (VI) and lead (II) in the biosorbent was found to be about 120 min. The obtained equilibrium biosorption data was fitted to the linear forms of Freundlich isotherms. The results proved the efficiency of Mirabilis jalapa leaves powder as biosorbent for the removal of metal ions and it can be used for the development of an efficient, clean and novel technology for waste water treatment.
