Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | Springer Nature Link |
|---|---|
| Author | Lee, Yeonhee Chung, Ha Sook Moon, Su Ran Park, Jihye Shin, Eunju Shin, Seungwon Koo, In Hye Hong, Hyunjin Lee, Minyoung |
| Copyright Year | 2003 |
| Abstract | The present study describes the bioactive secondary metabolites of Artemisia iwayomogy and Chrysanthemum morifolium, a traditional medicinal plant widely distributed in Korea, through activity-monitored fractionation and isolation method. The aerial parts of plants were extracted with 80% ethyl alcohol, and an aqueous suspension of the extracts was partitioned successively with n-hexane, chloroform, ethylacetate, and n-butanol, leaving a residual water-soluble fraction. Secondary metabolites, compounds 1–12 were isolated from biologically active solvent-soluble fractions, and chemical structures were identified by high resolution mass spectroscopy and nuclear magnetic resonance spectroscopic analyses. All compounds were subjected to bioassay to evaluate their antioxidant and antimicrobial activities, as judged by scavenging stable 1,1-diphenyl-2-picrylhydrazyl free radicals and disk diffusion test with a minor modification of Institute of Clinical Laboratory Standards, respectively. Kaempferol (4), quercimeritrin (8), luteolin (10), and chlorogenic acid (12) were found to be antioxidants, and the concentrations at which resulted in 50% inhibition (IC$_{50}$) were 105.16±0.09, 101.72±0.76, 91.96±0.06, and 85.31±0.14 μM, respectively, and their activities compared favorably with those observed with the standards, ascorbic acid and BHA, which had IC$_{50}$ values of 125.48±0.02 and 115.40±0.01 μM, respectively. Leucodin (5) was isolated from A. Iwayomogi for the first time as moderate antioxidant and antimicrobial naturals. |
| Starting Page | 716 |
| Ending Page | 723 |
| Page Count | 8 |
| File Format | |
| ISSN | 17382203 |
| Journal | Journal of the Korean Society for Applied Biological Chemistry |
| Volume Number | 53 |
| Issue Number | 6 |
| e-ISSN | 2234344X |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2003-01-01 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Subject Keyword | antimicrobial antioxidant phenolic acid coumarin Biological Techniques Compositae Artemisia iwayomogi Bioorganic Chemistry HR-MS, NMR Applied Microbiology flavonoid sesquiterpene lactone Chrysanthemum morifolium |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Biochemistry, Genetics and Molecular Biology |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|