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Improved Antioxidant Capacity of Black Tea Waste Utilizing PlantCrystals

Antioxidants are recommended to prevent and treat oxidative stress diseases. Plants are a balanced source of natural antioxidants, but the poor solubility of plant active molecules in aqueous media can be a problem for the formulation of pharmaceutical products. The potential of PlantCrystal technol...

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Autores principales: Abraham, Abraham M., Alnemari, Reem M., Brüßler, Jana, Keck, Cornelia M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7865903/
https://www.ncbi.nlm.nih.gov/pubmed/33498623
http://dx.doi.org/10.3390/molecules26030592
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author Abraham, Abraham M.
Alnemari, Reem M.
Brüßler, Jana
Keck, Cornelia M.
author_facet Abraham, Abraham M.
Alnemari, Reem M.
Brüßler, Jana
Keck, Cornelia M.
author_sort Abraham, Abraham M.
collection PubMed
description Antioxidants are recommended to prevent and treat oxidative stress diseases. Plants are a balanced source of natural antioxidants, but the poor solubility of plant active molecules in aqueous media can be a problem for the formulation of pharmaceutical products. The potential of PlantCrystal technology is known to improve the extraction efficacy and antioxidant capacity (AOC) of different plants. However, it is not yet proved for plant waste. Black tea (BT) infusion is consumed worldwide and thus a huge amount of waste occurs as a result. Therefore, BT waste was recycled into PlantCrystals using small-scale bead milling. Their characteristics were compared with the bulk-materials and tea infusion, including particle size and antioxidant capacity (AOC) in-vitro. Waste PlantCrystals possessed a size of about 280 nm. Their AOC increased with decreasing size according to the DPPH (1,1-diphenyl-2-picrylhydrazyl) and ORAC (oxygen radical absorbance capacity) assays. The AOC of the waste increased about nine-fold upon nanonization, leading to a significantly higher AOC than the bulk-waste and showed no significant difference to the infusion and the used standard according to DPPH assay. Based on the results, it is confirmed that the PlantCrystal technology represents a natural, cost-effective plant-waste recycling method and presents an alternative source of antioxidant phenolic compounds.
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spelling pubmed-78659032021-02-07 Improved Antioxidant Capacity of Black Tea Waste Utilizing PlantCrystals Abraham, Abraham M. Alnemari, Reem M. Brüßler, Jana Keck, Cornelia M. Molecules Article Antioxidants are recommended to prevent and treat oxidative stress diseases. Plants are a balanced source of natural antioxidants, but the poor solubility of plant active molecules in aqueous media can be a problem for the formulation of pharmaceutical products. The potential of PlantCrystal technology is known to improve the extraction efficacy and antioxidant capacity (AOC) of different plants. However, it is not yet proved for plant waste. Black tea (BT) infusion is consumed worldwide and thus a huge amount of waste occurs as a result. Therefore, BT waste was recycled into PlantCrystals using small-scale bead milling. Their characteristics were compared with the bulk-materials and tea infusion, including particle size and antioxidant capacity (AOC) in-vitro. Waste PlantCrystals possessed a size of about 280 nm. Their AOC increased with decreasing size according to the DPPH (1,1-diphenyl-2-picrylhydrazyl) and ORAC (oxygen radical absorbance capacity) assays. The AOC of the waste increased about nine-fold upon nanonization, leading to a significantly higher AOC than the bulk-waste and showed no significant difference to the infusion and the used standard according to DPPH assay. Based on the results, it is confirmed that the PlantCrystal technology represents a natural, cost-effective plant-waste recycling method and presents an alternative source of antioxidant phenolic compounds. MDPI 2021-01-23 /pmc/articles/PMC7865903/ /pubmed/33498623 http://dx.doi.org/10.3390/molecules26030592 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Abraham, Abraham M.
Alnemari, Reem M.
Brüßler, Jana
Keck, Cornelia M.
Improved Antioxidant Capacity of Black Tea Waste Utilizing PlantCrystals
title Improved Antioxidant Capacity of Black Tea Waste Utilizing PlantCrystals
title_full Improved Antioxidant Capacity of Black Tea Waste Utilizing PlantCrystals
title_fullStr Improved Antioxidant Capacity of Black Tea Waste Utilizing PlantCrystals
title_full_unstemmed Improved Antioxidant Capacity of Black Tea Waste Utilizing PlantCrystals
title_short Improved Antioxidant Capacity of Black Tea Waste Utilizing PlantCrystals
title_sort improved antioxidant capacity of black tea waste utilizing plantcrystals
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7865903/
https://www.ncbi.nlm.nih.gov/pubmed/33498623
http://dx.doi.org/10.3390/molecules26030592
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