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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.

Reads the DOI's public Crossref record; nothing is stored. Until Smart Scholars is accredited, every Declaration is marked as a draft in the XML itself.

✓ 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

Examining the antioxidant capabilities and enzyme-inhibiting potentials of the Stachys bombycina Boiss extracts.

10.46243/jst.2021.v6.i05.pp180-187 · JournalArticle — an article in a journal · Digital · Visual · Language · en

Published 2021-09-27

Part of Journal of Science & Technology · ISSN 2456-5660 · vol. 06 · no. 05 · pp. 180–187

Principal agents

  • Fathima Momina (author → Author)
  • Chaitanya rasad (author → Author)
  • Sushma (author → Author)
  • Longman Publishers (publisher → Publisher)

Also in the record, outside the Kernel: the abstract, the licence, 4 links, 2 references. Source: Crossref (member 25296), registered 2026-09-12, last deposited 2026-09-20.

⬇ Record (JSON) ⬇ Declaration (XML)

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.2021.v6.i05.pp180-187
Referent Type
referentType
Creation
Referent Sub-Type
referentSubType
JournalArticle — an article in a journal
Referent Name(s)
referentName(s)
Examining the antioxidant capabilities and enzyme-inhibiting potentials of the Stachys bombycina Boiss extracts. (PrincipalTitle, en)
Basic Metadata
basicMetadata
author: Fathima Momina
author: Chaitanya rasad
author: Sushma
publisher: Longman Publishers
published: 2021-09-27
part of: Journal of Science & Technology · ISSN 2456-5660 · vol. 06 · no. 05 · pp. 180–187
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
2026-09-12
relatedIdentifiersnone needed — the descriptive metadata is in this record

The record

{
    "format": "smartscholars-doi-metadata/1.0",
    "doi": "10.46243/jst.2021.v6.i05.pp180-187",
    "referent": "Creation",
    "type": "JournalArticle",
    "structural_type": "Digital",
    "modes": [
        "Visual"
    ],
    "characters": [
        "Language"
    ],
    "titles": [
        {
            "value": "Examining the antioxidant capabilities and enzyme-inhibiting potentials of the Stachys bombycina Boiss extracts.",
            "type": "PrincipalTitle",
            "lang": "en"
        }
    ],
    "identifiers": [
        {
            "type": "DOI",
            "value": "10.46243/jst.2021.v6.i05.pp180-187"
        }
    ],
    "agents": [
        {
            "role": "author",
            "name": {
                "given": "Fathima",
                "family": "Momina"
            },
            "sequence": "first"
        },
        {
            "role": "author",
            "name": {
                "given": "Chaitanya",
                "family": "rasad"
            },
            "sequence": "additional"
        },
        {
            "role": "author",
            "name": {
                "given": "",
                "family": "Sushma"
            },
            "sequence": "additional"
        },
        {
            "role": "publisher",
            "name": {
                "org": "Longman Publishers"
            }
        }
    ],
    "dates": {
        "published": "2021-09-27",
        "date_type": "PublicationDate",
        "online": "2021-09-27"
    },
    "language": "en",
    "container": {
        "type": "Journal",
        "titles": [
            {
                "value": "Journal of Science & Technology",
                "type": "PrincipalTitle"
            }
        ],
        "identifiers": [
            {
                "type": "ISSN",
                "value": "2456-5660",
                "medium": "electronic"
            }
        ],
        "volume": "06",
        "issue": "05",
        "pages": {
            "first": "180",
            "last": "187"
        }
    },
    "links": [
        {
            "url": "https://www.jst.org.in/index.php/pub/article/view/930",
            "return_type": "text/html",
            "primary": true
        },
        {
            "url": "https://www.jst.org.in/index.php/pub/article/download/930/857",
            "purpose": "text-mining",
            "return_type": "application/pdf"
        },
        {
            "url": "https://www.jst.org.in/index.php/pub/article/download/930/2567",
            "purpose": "text-mining",
            "return_type": "application/xml"
        },
        {
            "url": "https://www.jst.org.in/index.php/pub/article/view/930/857",
            "purpose": "similarity-checking"
        }
    ],
    "abstract": {
        "value": "Scope and Context: Roughly 300 species of Stachys L. are known to exist throughout the globe. Across Turkey, especially in the south and east, you may find more than 120 different taxa, with about 60 of them being endemic. Stachys species have a long history of medicinal usage, with applications ranging from the treatment of asthma and rheumatism to coughs, ulcers, genital tumors, diabetes, hemorrhoids, kidney stones, and a host of mental illnesses. S. bombycina Boiss., also known as \"arıçayçesi\" in Turkish, is a species of indigenous perennial plant that is almost endangered. We used in vitro methods comprising radical scavenging (DPPH and ABTS), an iron-chelating assay, total phenol content (TPC) and flavonoid content (TFC) analysis, and water and methanol extracts of S. bombycina were tested for antioxidant activity. Using an in vitro spectrophotometric technique, the extracts were also examined for their effects on enzyme inhibition. To further understand the extracts' phytochemical profiles, HPLC analysis was also used. Conclusion: Our findings indicate that compared to the water extract, the methanol extract of S. bombycina exhibited superior radical scavenging activity against DPPH and ABTS, with IC50 values of 605.7 ± 1.04 and 19.40 ± 0.37 μg/mL, respectively. In contrast to the methanol extract, the water extract was shown to possess a greater iron chelating activity (IC50= 917.9 ± 3.55 μg/mL). The water extract had the greatest total phenolic content (TPC) at 81.07 ± 4.71 μg GAE/mg, whereas the methanol extract had a higher total flavonoid content (TFC) at 46.93 ± 1.94 μg QE/mg. Further, the water extract exhibited a significant level of anti-BChE activity (IC50= 58.09 ± 1.18 μg/mL).",
        "lang": "en"
    },
    "license": {
        "url": "https://creativecommons.org/licenses/by/4.0/",
        "start": "2021-09-27",
        "applies_to": "vor"
    },
    "references": [
        {
            "key": "ref1",
            "doi": "10.1016/j.indcrop.2020.112089",
            "unstructured": "• Bahadori, M. B., Maggi, F., Zengin, G., Asghari, B., & Eskandani,M. (2020). Essential oils of hedgenettles (Stachys inflata, S. lavandulifolia,and S. byzantina) have antioxidant, anti-Alzheimer,antidiabetic, and anti-obesity potential: A comparative study.Industrial crops and products, 145, 1-8. https://doi.org/10.1016/j.indcrop.2020.112089• Bonesi, M., Menichini, F., Tundis, R., Loizzo, M. R., Conforti, F.,Passalacqua,  N.  G.,  Menichini,  F.  (2010). Acetylcholinesteraseand butyrylcholinesterase inhibitory activity of Pinus speciesessential oils and their constituents. Journal of enzymeinhibition and medicinal chemistry, 25(5), 622-628. https://doi.org/10.3109/14756360903389856• Bursal, E., Taslimi, P., Goren, A. C., & Gulcin, İ. (2020). Assessments ofanticholinergic, antidiabetic, antioxidant activities   and   phenoliccontent   of Stachys   annua. Biocatalysis   and   agricultural   biotechnology,28,   1-22. https://doi.org/10.1016/j.bcab.2020.101711• Chai, T., Mohan, M., Ong, H"
        },
        {
            "key": "ref2",
            "doi": "10.1016/j.fitote.2008.06.009",
            "unstructured": "• Haznagy-Radnai,  E.,  Rethy,  B.,  Czigle,  S.,  Zupko,  I.,  Weber,  E.,  Martinek,T.,  .  .  .  Mathe,  I.  (2008).  Cytotoxic activities of Stachys species.Fitoterapia, 79(7-8), 595-597. https://doi.org/10.1016/j.fitote.2008.06.009•  Haznagy‐Radnai,  E.,  Balogh,  A.,  Czigle,  S., Mathe,  I.,  Hohmann,J.,  &  Blazso,  G.  (2012).  Antiinflammatory activities    of    HungarianStachys species    and    their    iridoids. Phytotherapy    Research,    26(4),505-509. https://doi.org/10.1002/ptr.3582• Jeong, S. H., Ryu, Y. B., Curtis-Long, M. J., Ryu, H. W., Baek, Y. S., Kang,J. E., . . . Park, K. H. (2009). Tyrosinase inhibitory  polyphenols  fromroots  of Morus  lhou.  Journal  of  agricultural  and  food  chemistry,57(4),  1195-1203. https://doi.org/10.1021/jf8033286• Kang, J.-R., Kang, M.-J., Shin, J.-H., Park, J.-H., Kim, D.-i., Chung, S.-Y., & Shin, J.-H. (2017). Antioxidant and antidiabetic activities ofvarious solvent extracts from Stachys sieboldii Miq. Korean Journalof Food"
        }
    ],
    "record": {
        "registrant": "Longman Publishers",
        "registered": "2026-09-12",
        "updated": "2026-09-20",
        "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.2021.v6.i05.pp180-187</referentDoiName>
  <primaryReferentType>Creation</primaryReferentType>
  <registrationAgencyDoiName>10.0/smart-scholars-draft</registrationAgencyDoiName>
  <issueDate>2026-10-04</issueDate>
  <issueNumber>1</issueNumber>
  <referentCreation>
    <name primaryLanguage="en">
      <value>Examining the antioxidant capabilities and enzyme-inhibiting potentials of the Stachys bombycina Boiss extracts.</value>
      <type>PrincipalTitle</type>
    </name>
    <identifier>
      <nonUriValue>10.46243/jst.2021.v6.i05.pp180-187</nonUriValue>
      <uri returnType="text/html" doesContentNegotiation="true">https://doi.org/10.46243/jst.2021.v6.i05.pp180-187</uri>
      <type>DOI</type>
    </identifier>
    <identifier>
      <uri returnType="text/html">https://www.jst.org.in/index.php/pub/article/view/930</uri>
      <type>URI</type>
    </identifier>
    <identifier>
      <uri>https://www.jst.org.in/index.php/pub/article/download/930/857</uri>
      <type>URI</type>
    </identifier>
    <identifier>
      <uri returnType="application/xml">https://www.jst.org.in/index.php/pub/article/download/930/2567</uri>
      <type>URI</type>
    </identifier>
    <identifier>
      <uri>https://www.jst.org.in/index.php/pub/article/view/930/857</uri>
      <type>URI</type>
    </identifier>
    <structuralType>Digital</structuralType>
    <mode>Visual</mode>
    <character>Language</character>
    <type>JournalArticle</type>
    <principalAgent>
      <name>
        <value>Fathima Momina</value>
        <type>PrincipalName</type>
      </name>
      <role>Author</role>
    </principalAgent>
    <principalAgent>
      <name>
        <value>Chaitanya rasad</value>
        <type>PrincipalName</type>
      </name>
      <role>Author</role>
    </principalAgent>
    <principalAgent>
      <name>
        <value>Sushma</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 &amp; Technology</value>
        <type>PrincipalTitle</type>
      </name>
      <identifier>
        <nonUriValue>2456-5660</nonUriValue>
        <type>ISSN</type>
      </identifier>
      <referentCreationRole>Part</referentCreationRole>
      <referentCreationSequenceIdentifier>
        <value>06</value>
        <type>VolumeNumber</type>
      </referentCreationSequenceIdentifier>
      <referentCreationSequenceIdentifier>
        <value>05</value>
        <type>IssueNumber</type>
      </referentCreationSequenceIdentifier>
      <referentCreationSequenceIdentifier>
        <value>180-187</value>
        <type>PageNumber</type>
      </referentCreationSequenceIdentifier>
    </linkedCreation>
    <language>en</language>
    <languageOfReferentContent>
      <language>en</language>
      <languageOfReferentContentType>Original</languageOfReferentContentType>
    </languageOfReferentContent>
    <creationDate>
      <date>2021-09-27</date>
      <creationDateType>PublicationDate</creationDateType>
    </creationDate>
  </referentCreation>
</kernelMetadata>
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