DocumentCode
3325032
Title
Notice of Retraction
Antioxidant Activities of Crude and Fractionated Extracts from the Ascidian Styela clava
Author
Bin Chen ; Minglv Sun ; Aili Jiang ; Changhai Wang
Author_Institution
Yantai Inst. of Coastal Zone Res., Chinese Acad. of Sci., Yantai, China
fYear
2011
fDate
10-12 May 2011
Firstpage
1
Lastpage
4
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Abstract-The antioxidant activities of crude and fractionated extracts from the ascidian Styela clava were determined using 1, l-diphenyl-2-picrylhydrazyl (DPPH) system, reducing power assay and β-carotene method. Results indicated that the viscera extract showed the highest activities among three different crude extracts obtained from S. clava. In addition, the ethyl acetate soluble fraction isolated from viscera extract exhibited obvious antioxidant activities, which EC50were 54.91 and 59.86 μg/mL on DPPH radicals scavenging effect and β-carotene bleaching assay, respectively. Moreover, its reducing power was 152.0 mg/g dry weight of AscAE.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Abstract-The antioxidant activities of crude and fractionated extracts from the ascidian Styela clava were determined using 1, l-diphenyl-2-picrylhydrazyl (DPPH) system, reducing power assay and β-carotene method. Results indicated that the viscera extract showed the highest activities among three different crude extracts obtained from S. clava. In addition, the ethyl acetate soluble fraction isolated from viscera extract exhibited obvious antioxidant activities, which EC50were 54.91 and 59.86 μg/mL on DPPH radicals scavenging effect and β-carotene bleaching assay, respectively. Moreover, its reducing power was 152.0 mg/g dry weight of AscAE.
Keywords
biochemistry; pharmaceuticals; zoology; 1,1-diphenyl-2-picrylhydrazyl; DPPH system; Styela clava crude extracts; Styela clava fractionated extracts; antioxidant activities; ascidian; beta-carotene method; ethyl acetate soluble fraction; reducing power assay; viscera extract; Additives; Chemicals; Diseases; Petroleum; Stress; Temperature measurement; Viscera;
fLanguage
English
Publisher
ieee
Conference_Titel
Bioinformatics and Biomedical Engineering, (iCBBE) 2011 5th International Conference on
Conference_Location
Wuhan
ISSN
2151-7614
Print_ISBN
978-1-4244-5088-6
Type
conf
DOI
10.1109/icbbe.2011.5780437
Filename
5780437
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