Kernel Metadata Declaration — on demand
ISO 26324 asks a DOI Registration Agency to produce a Kernel Metadata Declaration for every DOI it issues. Give any DOI: its public record becomes a record in the Smart Scholars DOI Metadata Format 1.0, checked against every rule, and declared as the Kernel XML.
✓ Meets every rule of the format
The record below is complete and every controlled value is a DOI Attribute Value Set 2.3 spelling. The Declaration on the right follows DOIMetadataKernel.xsd element by element.
What the DOI identifies
Evaluation of in vitro antioxidant and free radical scavenging activity of leaf and twig endophytic fungal extract from Mappia foetida
10.46243/jst.2022.v7.i03.pp68-79 · JournalArticle — an article in a journal · Digital · Visual · Language · en
Published 2022-05-25
Part of Journal of Science & Technology · ISSN 2456-5660 · vol. 7 · no. 3 · pp. 68–79
Principal agents
- Pooja. R Pooja. R (author → Author)
- Longman Publishers (publisher → Publisher)
Also in the record, outside the Kernel: the abstract, the licence, 4 links, 10 references. Source: Crossref (member 25296), registered 2024-02-16, last deposited 2026-09-17.
System metadata — ISO 26324:2025, Annex B · DOI Handbook 10.1
Each element by the standard's name and the Handbook's (in grey), read off the record.
| DOI Name DOI name | 10.46243/jst.2022.v7.i03.pp68-79 |
| Referent Type referentType | Creation |
| Referent Sub-Type referentSubType | JournalArticle — an article in a journal |
| Referent Name(s) referentName(s) | Evaluation of in vitro antioxidant and free radical scavenging activity of leaf and twig endophytic fungal extract from Mappia foetida (PrincipalTitle, en) |
| Basic Metadata basicMetadata | author: Pooja. R Pooja. R publisher: Longman Publishers published: 2022-05-25 part of: Journal of Science & Technology · ISSN 2456-5660 · vol. 7 · no. 3 · pp. 68–79 language: en form: Digital · Visual · Language |
| Referent Identifier(s) alternateIdentifier(s) | none besides the DOI |
| Registration Authority registrationAuthorityCode | Crossref — issued by Crossref (member 25296); held here as a copy |
| Created Date issueDate | 2024-02-16 |
| relatedIdentifiers | none needed — the descriptive metadata is in this record |
The record
{
"format": "smartscholars-doi-metadata/1.0",
"doi": "10.46243/jst.2022.v7.i03.pp68-79",
"referent": "Creation",
"type": "JournalArticle",
"structural_type": "Digital",
"modes": [
"Visual"
],
"characters": [
"Language"
],
"titles": [
{
"value": "Evaluation of in vitro antioxidant and free radical scavenging activity of leaf and twig endophytic fungal extract from Mappia foetida",
"type": "PrincipalTitle",
"lang": "en"
}
],
"identifiers": [
{
"type": "DOI",
"value": "10.46243/jst.2022.v7.i03.pp68-79"
}
],
"agents": [
{
"role": "author",
"name": {
"given": "Pooja. R",
"family": "Pooja. R"
},
"sequence": "first"
},
{
"role": "publisher",
"name": {
"org": "Longman Publishers"
}
}
],
"dates": {
"published": "2022-05-25",
"date_type": "PublicationDate",
"online": "2022-05-25"
},
"language": "en",
"container": {
"type": "Journal",
"titles": [
{
"value": "Journal of Science & Technology",
"type": "PrincipalTitle"
}
],
"identifiers": [
{
"type": "ISSN",
"value": "2456-5660",
"medium": "electronic"
}
],
"volume": "7",
"issue": "3",
"pages": {
"first": "68",
"last": "79"
}
},
"links": [
{
"url": "https://www.jst.org.in/index.php/pub/article/view/418",
"return_type": "text/html",
"primary": true
},
{
"url": "https://www.jst.org.in/index.php/pub/article/download/418/369",
"purpose": "text-mining",
"return_type": "application/pdf"
},
{
"url": "https://www.jst.org.in/index.php/pub/article/download/418/2123",
"purpose": "text-mining",
"return_type": "application/xml"
},
{
"url": "https://jst.org.in/admin/uploads/JST070332.pdf",
"purpose": "similarity-checking"
}
],
"abstract": {
"value": "The present study was aimed to investigate the in vitro free radical scavenging activity of leaf extracts. In vitro free radical scavenging activities of the endophytic extracts were assessed against DPPH and hydroxylradicals. The metal chelating activity and reducing power ability of the extracts of M. foetida. were also determined. The free radical scavenging activity was found to be high in methanolic extract for DPPH and hydroxyl radicals . The difference in scavenging potential of the endophytic extracts may be due to variation in the percentage of phytoconstituents extracted in Journal of Science and Technology ISSN: 2456-5660 Volume 7, Issue 03 (MAY 2022) www.jst.org.in DOI:https://doi.org/10.46243/jst.2022.v7.i03.pp68-79 Published by: Longman Publishers www.jst.org.in P a g e 69 | 12 methanolic solvents. Thus, the result suggests that the methanolic leaf extract of M. foetida could serve as a potential source of antioxidants and can be explored as a therapeutic agent in free radical induced diseases",
"lang": "en"
},
"license": {
"url": "https://creativecommons.org/licenses/by/4.0/",
"start": "2022-05-25",
"applies_to": "vor"
},
"references": [
{
"key": "ref1",
"unstructured": "A. Tiwari. Imbalance in antioxidant defense and human diseases: multiple approach of natural antioxidants therapy. Curr. Sci., 81 (2001), pp. 1179-1187 P age 78 | 12"
},
{
"key": "ref2",
"doi": "10.1111/j.1749-6632.1998.tb09886.x",
"unstructured": "D. Harman, “Aging: phenomena and theories,” Annals of the New York Academy of Sciences, vol. 854, pp. 1–7, 1998.View at: Publisher Site | Google Scholar"
},
{
"key": "ref3",
"doi": "10.2165/00003495-199549030-00003",
"unstructured": "S. R. J. Maxwell, “Prospects for the use of antioxidant therapies,” Drugs, vol. 49, no. 3, pp. 345–361, 1995.View at: Publisher Site | Google Scholar"
},
{
"key": "ref4",
"unstructured": "E. Niki, H. Shimaski, and M. Mino, Antioxidantism-Free Radical and Biological Defense, Gakkai Syuppn Center, Tokyo, Japan, 1994"
},
{
"key": "ref5",
"doi": "10.3109/10715769509145649",
"unstructured": "C. A. Rice-Evans, N. J. Miller, P. G. Bolwell, P. M. Bramley, and J. B. Pridham, “The relative antioxidant activities of plant-derived polyphenolic flavonoids,” Free Radical Research, vol. 22, no. 4, pp. 375–383, 1995"
},
{
"key": "ref6",
"unstructured": "M. Gerber, M.-C. Boutron-Ruault, S. Hercberg, E. Riboli, A. Scalbert, and M.-H. Siess, “Food and cancer: state of the art about the protective effect of fruits and vegetables,” Bulletin du Cancer, vol. 89, no. 3, pp. 293–312, 2002"
},
{
"key": "ref7",
"unstructured": "Harborne J. Phytochemical methods London. Chapman and Hall, Ltd. Iinuma M, Tsuchiya H, Sato M, Yokoyama J, Ohyama M, Ohkawa Y, 1973"
},
{
"key": "ref8",
"unstructured": "Sofowara A. Medicinal plants and Traditional medicine in Africa.Spectrum Journal Ethnopharmacology, 1993; 90(2-3):P.249-252"
},
{
"key": "ref9",
"doi": "10.1016/0031-9422(88)80789-1",
"unstructured": "Aiyama, R., N. Hisako, K. Nokata, C. Shinohara, and S. A. Sawada. 1988. A Camptothecin derivative from Nothapodytes nimmoniana.Phytochemistry, 27:3663-4"
},
{
"key": "ref10",
"doi": "10.1093/carcin/10.6.1003",
"unstructured": "Ruch, R. J., S. J. Cheng, J. E. Klaunig. 1989. Prevention of cytotoxicity and inhibition of intracellular communication by antioxidant catechins isolated from Chinese green tea.Carcinogenesis, 10, p. 1003"
}
],
"record": {
"registrant": "Longman Publishers",
"registered": "2024-02-16",
"updated": "2026-09-17",
"issue_number": 1,
"source": "crossref-api",
"source_agency": "Crossref (member 25296)"
}
}The Kernel Metadata Declaration
DOIMetadataKernel.xsd · namespace http://www.doi.org/2010/DOISchema · Attribute Value Sets 2.3 · draft — the agency's DOI name is filled in on accreditation
<?xml version="1.0" encoding="UTF-8"?>
<!-- DRAFT declaration: Smart Scholars is not yet a DOI Registration Agency. registrationAgencyDoiName is a marker (10.0/ is no RA's prefix) and is filled in on accreditation. -->
<kernelMetadata xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.doi.org/2010/DOISchema https://www.doi.org/doi_schemas/DOIMetadataKernel.xsd" xmlns="http://www.doi.org/2010/DOISchema">
<referentDoiName>10.46243/jst.2022.v7.i03.pp68-79</referentDoiName>
<primaryReferentType>Creation</primaryReferentType>
<registrationAgencyDoiName>10.0/smart-scholars-draft</registrationAgencyDoiName>
<issueDate>2026-10-04</issueDate>
<issueNumber>1</issueNumber>
<referentCreation>
<name primaryLanguage="en">
<value>Evaluation of in vitro antioxidant and free radical scavenging activity of leaf and twig endophytic fungal extract from Mappia foetida</value>
<type>PrincipalTitle</type>
</name>
<identifier>
<nonUriValue>10.46243/jst.2022.v7.i03.pp68-79</nonUriValue>
<uri returnType="text/html" doesContentNegotiation="true">https://doi.org/10.46243/jst.2022.v7.i03.pp68-79</uri>
<type>DOI</type>
</identifier>
<identifier>
<uri returnType="text/html">https://www.jst.org.in/index.php/pub/article/view/418</uri>
<type>URI</type>
</identifier>
<identifier>
<uri>https://www.jst.org.in/index.php/pub/article/download/418/369</uri>
<type>URI</type>
</identifier>
<identifier>
<uri returnType="application/xml">https://www.jst.org.in/index.php/pub/article/download/418/2123</uri>
<type>URI</type>
</identifier>
<identifier>
<uri>https://jst.org.in/admin/uploads/JST070332.pdf</uri>
<type>URI</type>
</identifier>
<structuralType>Digital</structuralType>
<mode>Visual</mode>
<character>Language</character>
<type>JournalArticle</type>
<principalAgent>
<name>
<value>Pooja. R Pooja. R</value>
<type>PrincipalName</type>
</name>
<role>Author</role>
</principalAgent>
<principalAgent>
<name>
<value>Longman Publishers</value>
<type>PrincipalName</type>
</name>
<role>Publisher</role>
</principalAgent>
<linkedCreation>
<name>
<value>Journal of Science & Technology</value>
<type>PrincipalTitle</type>
</name>
<identifier>
<nonUriValue>2456-5660</nonUriValue>
<type>ISSN</type>
</identifier>
<referentCreationRole>Part</referentCreationRole>
<referentCreationSequenceIdentifier>
<value>7</value>
<type>VolumeNumber</type>
</referentCreationSequenceIdentifier>
<referentCreationSequenceIdentifier>
<value>3</value>
<type>IssueNumber</type>
</referentCreationSequenceIdentifier>
<referentCreationSequenceIdentifier>
<value>68-79</value>
<type>PageNumber</type>
</referentCreationSequenceIdentifier>
</linkedCreation>
<language>en</language>
<languageOfReferentContent>
<language>en</language>
<languageOfReferentContentType>Original</languageOfReferentContentType>
</languageOfReferentContent>
<creationDate>
<date>2022-05-25</date>
<creationDateType>PublicationDate</creationDateType>
</creationDate>
</referentCreation>
</kernelMetadata>
