Home
GSC Biological and Pharmaceutical Sciences
Peer-reviewed Journal | Impact factor 8.1 | ISSN: 2581-3250 | CAS Source Indexed | Crossref DOI

Main navigation

  • Home
    • Journal Information
    • Editorial Board Members
    • Reviewer Panel
    • Abstracting and Indexing
    • Journal Policies
    • Our CrossMark Policy
    • Publication Ethics
    • Issue in Progress
    • Current Issue
    • Past Issues
    • Instructions for Authors
    • Article processing fee
    • Track Manuscript Status
    • Get Publication Certificate
    • Join Editorial Board
    • Join Reviewer Panel
  • Contact us
  • Downloads

Research and review articles are invited for publication in September 2026 - Vol. 36, Issue 3 

🌟 GSC Biological and Pharmaceutical Sciences (GSCBPS) 🌟

Low Publication Charges | Fast Editorial Processing | Crossref DOI Linking | Transparent Peer-Review Process

Publishing quality research in Biological Sciences, Pharmaceutical Sciences, Medicine, Healthcare and Allied Life Sciences.

e-ISSN: 2581-3250 | Impact Factor: 8.1 | Established: 2017 | Charges: USD 35 / INR 2100

📄 Submit Manuscript 👉 Author Guidelines 📚 Published Articles 

Comparative study of catechin levels from green tea, oolong tea and black tea product with various treatments

Breadcrumb

  • Home
  • Comparative Study of Catechin Levels From Green Tea, Oolong Tea and Black Tea Product With Various Treatments
  • Comparative study of catechin levels from green tea, oolong tea and black tea product with various treatments

Syamsu Nur 1, *,  Andi Nur Aisyah 2, Alfat Fadri 3, Sharfianty 3, Amriani Sapra 2 and Fitriyanti Jumaetri Sami 1

1 Departmen of Pharmaceutical Chemistry, Sekolah Tinggi Ilmu Farmasi Makassar, Indonesia, 90242.
2 Departmen of Pharmaceutical Techlogy, Sekolah Tinggi Ilmu Farmasi Makassar, Indonesia, 90242.
3 Bachelor Students, Sekolah Tinggi Ilmu Farmasi Makassar, Indonesia, 90242.
 

 

Research Article
GSC Biological and Pharmaceutical Sciences, 2021, 14(01), 001-010.
Article DOI: 10.30574/gscbps.2021.14.1.0416
DOI url: https://doi.org/10.30574/gscbps.2021.14.1.0416
Received on 23 December 2020; revised on 02 January 2021; accepted on 04 January 2021
 
Background: Tea is a refreshing drink that contains polyphenol compounds, namely catechins that are used for medicine and cosmetics. This study was to assess the content of catechin compounds in green tea, oolong and black tea products from Indonesia, China and Taiwan.
Methods: Some tea products are brewed at varying temperatures (75±2; 85±2 and 95±20 C) and times (5; 10 and 15 minutes). Identification of catechin compounds was carried out using chemical reagents and UV spectrophotometry. The level of cathecin in tea products were analyzed by spectrophotometer at 280 nm wavelength.
Results: The results obtained indicate that green tea, oolong tea and black tea contain epigallocatechin-3-gallate (EGCG) compounds according to the color change based on chemical reagents and for UV spectrum analysis which has λmax in the range 268-274 nm. The results of quantitative tests using UV-Vis spectrophotometry showed that the green tea samples gave the highest levels of catechins followed by oolong tea and black tea with brewing temperature at 95±20 °C.
Conclusion: The catechin content of tea obtained from various products varies according to the type of processing method and the brewing temperature. Therefore, this study is expected to provide information related to catechin content to the public and researchers.
 
Green Tea; Oolong Tea; Black Tea; Catechin; UV Spectrophotometry
 
https://gscbps.gsconlinepress.com/sites/default/files/fulltext_pdf/GSCBPS-2020-…

Preview Article PDF

Syamsu Nur, Andi Nur Aisyah, Alfat Fadri, Sharfianty, Amriani Sapra and Fitriyanti Jumaetri Sami. Comparative study of catechin levels from green tea, oolong tea and black tea product with various treatments. GSC Biological and Pharmaceutical Sciences, 2021, 14(1), 001-010. Article DOI: https://doi.org/10.30574/gscbps.2021.14.1.0416


📝 Copyright, Licensing and Permissions: © Copyright Author(s). This article is published under the 🌐 Creative Commons Attribution 4.0 International License (CC BY 4.0) , which permits unrestricted use, distribution, adaptation, and reproduction in any medium, provided the original author(s) and source are properly credited, a link to the license is provided, and any changes made are indicated.


⚠️ Disclaimer: The statements, opinions, interpretations, and data presented in this publication are solely those of the individual author(s). GSC Biological and Pharmaceutical Sciences (GSCBPS), the editors, reviewers, editorial board, and publisher disclaim responsibility for any errors, omissions, or consequences arising from the use of the information contained in this article.


🏆 Get Publication Certificate 📄 Download Letter of Acceptance 🔗 Verify Crossref DOI 📘 View Issue Cover Page 👨‍🔬 Editorial Board 📑 Table of Contents 

🚀 Publish Your Research in International Peer Reviewed Open Access Journal - GSC Biological and Pharmaceutical Sciences (GSCBPS)

Submit your manuscripts from Biological Sciences, Pharmaceutical Sciences, Medicine, Healthcare, Biotechnology and Allied Life Sciences etc.

🌍 International Journal   |   👨‍🔬 Transparent Peer Review Process   |   🌐 Open Access Publishing   |   🔗 Crossref DOI 
⚡ Fast Editorial Processing   |   💰 Low Publication Charges

📝 Submit Your Manuscript 📘 Author Guidelines 💰 Publication Charges 

✅ No Submission Fee •  📜 Free Publication Certificate • 🌍 Global Visibility

⭐ Popular Pages


  • 🌍 International Journal
  • 🌐 Open Access Journal
  • 👨‍⚖️ Peer-Reviewed Journal
  • 💰 Low APC Journal
  • 🚀 Fast Publication Journal
  • ⚡ Fast-Track Peer-Review
  • 🔗 Crossref DOI Journal
  • 📖 Refereed Journal
  • 📈 High Impact Journal
  • 🧬 International Biology Journal
  • 💊 International Pharmacy Journal
  • 📝 Publish Research Paper

✍️ Author Resources


  • 📝 Publish Research Paper
  • 📖 Author Guidelines
  • 🎯 Aims and Scope
  • 💳 Article Processing Charges
  • 📤 Submit Manuscript
  • 📄 Cover Letter
  • ✍️ Author Declaration Form
  • 📄Track Manuscript Status
  • 📜 Get Publication Certificate
  • 📚 Journal Past Issue Archive
  • 🔎 Journal Indexing

⚖️ Journal Policies


  • ⚖️ Publication Ethics
  • 🛡️ Plagiarism Policy
  • 👨‍🔬 Peer Review Policy
  • 👨‍⚖️ Peer Review Process
  • 📖 Open Access Publishing
  • 📜 Copyright & Licensing
  • 🔗Author Self-Archiving Policy
  • 👥 Authorship Policy
  • 📊 Data Sharing Policy
  • 🤖 AI Usage Policy

Copyright © 2026 GSC Biological and Pharmaceutical Sciences - All rights reserved

Developed & Designed by VS Infosolution