Comparative assessment of total polyphenols, antioxidant and antimicrobial activity of different tea varieties of Bangladesh
Objective: To determine the total polyphenol content, antioxidant activity and antibacterial properties of the extracts of different Bangladeshi tea varieties such as flowery broken orange pekoe, broken orange pekoe, red dust and green tea. Methods: Total phenolic and flavonoid contents were determi...
Published in: | Asian Pacific Journal of Tropical Biomedicine |
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Wolters Kluwer Medknow Publications
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ftdoajarticles:oai:doaj.org/article:623f17df1a384cd0a63fc65cdf540249 2023-05-15T15:08:26+02:00 Comparative assessment of total polyphenols, antioxidant and antimicrobial activity of different tea varieties of Bangladesh Yead Morshed Nibir Ahmed Faisal Sumit Anwarul Azim Akhand Nazmul Ahsan Mohammad Shahnoor Hossain 2017-04-01T00:00:00Z https://doi.org/10.1016/j.apjtb.2017.01.005 https://doaj.org/article/623f17df1a384cd0a63fc65cdf540249 EN eng Wolters Kluwer Medknow Publications http://www.sciencedirect.com/science/article/pii/S2221169116308309 https://doaj.org/toc/2221-1691 2221-1691 doi:10.1016/j.apjtb.2017.01.005 https://doaj.org/article/623f17df1a384cd0a63fc65cdf540249 Asian Pacific Journal of Tropical Biomedicine, Vol 7, Iss 4, Pp 352-357 (2017) Tea extracts Antioxidant activity Antibacterial activity Total phenolic content Arctic medicine. Tropical medicine RC955-962 Biology (General) QH301-705.5 article 2017 ftdoajarticles https://doi.org/10.1016/j.apjtb.2017.01.005 2022-12-31T11:52:43Z Objective: To determine the total polyphenol content, antioxidant activity and antibacterial properties of the extracts of different Bangladeshi tea varieties such as flowery broken orange pekoe, broken orange pekoe, red dust and green tea. Methods: Total phenolic and flavonoid contents were determined by Folin–Ciocalteu and aluminum chloride colorimetric assay, respectively. The antioxidant capacity was determined by ferric ion reducing antioxidant power and phosphomolybdenum method. Antibacterial activity was evaluated by disc diffusion method in agar plate and subsequently, the minimum inhibitory concentration was determined by broth dilution method. Results: Total phenolic and flavonoid contents were significantly higher (P < 0.05) in green tea compared to other three black tea varieties. The green tea also showed a higher free radical scavenging and antioxidant activities than all the other tea varieties tested (P < 0.05). In addition, the extracts of all four tea varieties showed inhibitory activity against several pathogenic bacteria and also the same trend of higher antimicrobial activity of green tea than other tea varieties was observed. Conclusions: Taken together, the results of this study demonstrated that Bangladeshi tea, especially the green tea, may act as a substitute for natural antioxidants and as a promising antibacterial agent for beneficial influence in human health. Article in Journal/Newspaper Arctic Human health Directory of Open Access Journals: DOAJ Articles Arctic Asian Pacific Journal of Tropical Biomedicine 7 4 352 357 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Tea extracts Antioxidant activity Antibacterial activity Total phenolic content Arctic medicine. Tropical medicine RC955-962 Biology (General) QH301-705.5 |
spellingShingle |
Tea extracts Antioxidant activity Antibacterial activity Total phenolic content Arctic medicine. Tropical medicine RC955-962 Biology (General) QH301-705.5 Yead Morshed Nibir Ahmed Faisal Sumit Anwarul Azim Akhand Nazmul Ahsan Mohammad Shahnoor Hossain Comparative assessment of total polyphenols, antioxidant and antimicrobial activity of different tea varieties of Bangladesh |
topic_facet |
Tea extracts Antioxidant activity Antibacterial activity Total phenolic content Arctic medicine. Tropical medicine RC955-962 Biology (General) QH301-705.5 |
description |
Objective: To determine the total polyphenol content, antioxidant activity and antibacterial properties of the extracts of different Bangladeshi tea varieties such as flowery broken orange pekoe, broken orange pekoe, red dust and green tea. Methods: Total phenolic and flavonoid contents were determined by Folin–Ciocalteu and aluminum chloride colorimetric assay, respectively. The antioxidant capacity was determined by ferric ion reducing antioxidant power and phosphomolybdenum method. Antibacterial activity was evaluated by disc diffusion method in agar plate and subsequently, the minimum inhibitory concentration was determined by broth dilution method. Results: Total phenolic and flavonoid contents were significantly higher (P < 0.05) in green tea compared to other three black tea varieties. The green tea also showed a higher free radical scavenging and antioxidant activities than all the other tea varieties tested (P < 0.05). In addition, the extracts of all four tea varieties showed inhibitory activity against several pathogenic bacteria and also the same trend of higher antimicrobial activity of green tea than other tea varieties was observed. Conclusions: Taken together, the results of this study demonstrated that Bangladeshi tea, especially the green tea, may act as a substitute for natural antioxidants and as a promising antibacterial agent for beneficial influence in human health. |
format |
Article in Journal/Newspaper |
author |
Yead Morshed Nibir Ahmed Faisal Sumit Anwarul Azim Akhand Nazmul Ahsan Mohammad Shahnoor Hossain |
author_facet |
Yead Morshed Nibir Ahmed Faisal Sumit Anwarul Azim Akhand Nazmul Ahsan Mohammad Shahnoor Hossain |
author_sort |
Yead Morshed Nibir |
title |
Comparative assessment of total polyphenols, antioxidant and antimicrobial activity of different tea varieties of Bangladesh |
title_short |
Comparative assessment of total polyphenols, antioxidant and antimicrobial activity of different tea varieties of Bangladesh |
title_full |
Comparative assessment of total polyphenols, antioxidant and antimicrobial activity of different tea varieties of Bangladesh |
title_fullStr |
Comparative assessment of total polyphenols, antioxidant and antimicrobial activity of different tea varieties of Bangladesh |
title_full_unstemmed |
Comparative assessment of total polyphenols, antioxidant and antimicrobial activity of different tea varieties of Bangladesh |
title_sort |
comparative assessment of total polyphenols, antioxidant and antimicrobial activity of different tea varieties of bangladesh |
publisher |
Wolters Kluwer Medknow Publications |
publishDate |
2017 |
url |
https://doi.org/10.1016/j.apjtb.2017.01.005 https://doaj.org/article/623f17df1a384cd0a63fc65cdf540249 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Human health |
genre_facet |
Arctic Human health |
op_source |
Asian Pacific Journal of Tropical Biomedicine, Vol 7, Iss 4, Pp 352-357 (2017) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2221169116308309 https://doaj.org/toc/2221-1691 2221-1691 doi:10.1016/j.apjtb.2017.01.005 https://doaj.org/article/623f17df1a384cd0a63fc65cdf540249 |
op_doi |
https://doi.org/10.1016/j.apjtb.2017.01.005 |
container_title |
Asian Pacific Journal of Tropical Biomedicine |
container_volume |
7 |
container_issue |
4 |
container_start_page |
352 |
op_container_end_page |
357 |
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1766339803574435840 |