随着人们生活水平提高,健康饮食意识逐渐增强,食用野菜、野生菌等成为一种时尚。但大部分人对野生植物并不熟悉,误食导致中毒或过敏反应时有发生,反应的严重程度可从轻度的局部反应到全身的过敏反应[1]。灰灰菜(学名:Chenopodum album l...随着人们生活水平提高,健康饮食意识逐渐增强,食用野菜、野生菌等成为一种时尚。但大部分人对野生植物并不熟悉,误食导致中毒或过敏反应时有发生,反应的严重程度可从轻度的局部反应到全身的过敏反应[1]。灰灰菜(学名:Chenopodum album linn)又名藜,别名野灰菜,灰蓼草等,为藜科一年生草本植物,多生于田间路边,旷野宅旁等处;具有清湿热、降压、杀虫解毒等功效,常用于治疗痢疾、腹泻,全草可入药,亦可作为野菜食用。而食用后出现过敏反应的临床报道却很少见,2018年5月我科成功救治1例灰灰菜过敏反应的患者,现报道如下。展开更多
The objective of this research was to isolate a dichlorvos (2,2-dichlorovinyl dimethyl phosphate)-degrading strain of Ochrobactrum sp., and determine its effectiveness in remediation of a dichlorvos-contaminated soil....The objective of this research was to isolate a dichlorvos (2,2-dichlorovinyl dimethyl phosphate)-degrading strain of Ochrobactrum sp., and determine its effectiveness in remediation of a dichlorvos-contaminated soil. A dichlorvos-degrading bacterium (strain DDV-1) was successfully isolated and identified as an Ochrobactrumsp. based on its 16S rDNA sequence analysis. Strain DDV-1 was able to utilize dichlorvos as a sole carbon source, and the optimal pH and temperature for its cell growth and degradation were 7.0 and 30 ℃, respectively. Also, the growth and degradation of strain DDV-1 showed the same response to dissolved oxygen. In addition, the soil degradation test indicated that in soil spiked with 100 mg L-1 or 500 mg L-1 dichlorvos and inoculated with 0.5% or 1.0% (v/v) strain DDV-1, complete degradation of dichlorvos could be achieved in 24 h. The present study showed that strain DDV-1 was a fast dichlorvos-degrading bacterium in soil. However, further research will be needed to clarify the degradation pathway and the properties of the key enzymes involved in its biodegradation.展开更多
文摘随着人们生活水平提高,健康饮食意识逐渐增强,食用野菜、野生菌等成为一种时尚。但大部分人对野生植物并不熟悉,误食导致中毒或过敏反应时有发生,反应的严重程度可从轻度的局部反应到全身的过敏反应[1]。灰灰菜(学名:Chenopodum album linn)又名藜,别名野灰菜,灰蓼草等,为藜科一年生草本植物,多生于田间路边,旷野宅旁等处;具有清湿热、降压、杀虫解毒等功效,常用于治疗痢疾、腹泻,全草可入药,亦可作为野菜食用。而食用后出现过敏反应的临床报道却很少见,2018年5月我科成功救治1例灰灰菜过敏反应的患者,现报道如下。
基金Project supported by the National High Technology Research and Development Program of China (863 Program)(Nos.2001AA214121, 2002AA246081 and 2003AA241150)the National Key Technologies Research and Development Program of China during the 9th Five-Year Plan Period (No. 2002BA516A01)the National Natural Science Foundation of China (No. 30400013).
文摘The objective of this research was to isolate a dichlorvos (2,2-dichlorovinyl dimethyl phosphate)-degrading strain of Ochrobactrum sp., and determine its effectiveness in remediation of a dichlorvos-contaminated soil. A dichlorvos-degrading bacterium (strain DDV-1) was successfully isolated and identified as an Ochrobactrumsp. based on its 16S rDNA sequence analysis. Strain DDV-1 was able to utilize dichlorvos as a sole carbon source, and the optimal pH and temperature for its cell growth and degradation were 7.0 and 30 ℃, respectively. Also, the growth and degradation of strain DDV-1 showed the same response to dissolved oxygen. In addition, the soil degradation test indicated that in soil spiked with 100 mg L-1 or 500 mg L-1 dichlorvos and inoculated with 0.5% or 1.0% (v/v) strain DDV-1, complete degradation of dichlorvos could be achieved in 24 h. The present study showed that strain DDV-1 was a fast dichlorvos-degrading bacterium in soil. However, further research will be needed to clarify the degradation pathway and the properties of the key enzymes involved in its biodegradation.
