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Microwave-Assisted Extraction of Polyphenols from Camellia oleifera Fruit Hull
The abundant fruit hulls of tea-oil tree (Camellia oleifera) are still underutilized and wastefully discaded to pollute the environment. In order to solve this problem and better utilize the fruit hulls of C. oleifera, a microwave-assisted extraction system was used to extract their polyphenols usin...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6264374/ https://www.ncbi.nlm.nih.gov/pubmed/21623313 http://dx.doi.org/10.3390/molecules16064428 |
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author | Zhang, Liangliang Wang, Yongmei Wu, Dongmei Xu, Man Chen, Jiahong |
author_facet | Zhang, Liangliang Wang, Yongmei Wu, Dongmei Xu, Man Chen, Jiahong |
author_sort | Zhang, Liangliang |
collection | PubMed |
description | The abundant fruit hulls of tea-oil tree (Camellia oleifera) are still underutilized and wastefully discaded to pollute the environment. In order to solve this problem and better utilize the fruit hulls of C. oleifera, a microwave-assisted extraction system was used to extract their polyphenols using water as the extraction solvent. A central composite design (CCD) was used to monitor the effects of three extraction processing parameters – liquid:solid ratio (mL/g), extraction time (min) and extraction temperature (°C) – on the polyphenol yield (%). The results showed that the optimal conditions were liquid:solid ratio of 15.33:1 (mL/g), extraction time of 35 min and extraction temperature of 76 °C. Validation tests indicated that under the optimized conditions the actual yield of polyphenols was 15.05 ± 0.04% with RSD = 0.21% (n = 5), which was in good agreement with the predicted yield. Phenolic compounds in the extracts were analysed by HPLC, and gallic acid was found to be the predominant constituent. The total flavonoid content in the extracts was determined and high total flavonoid content was revealed (140.06 mg/g dry material). |
format | Online Article Text |
id | pubmed-6264374 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-62643742018-12-10 Microwave-Assisted Extraction of Polyphenols from Camellia oleifera Fruit Hull Zhang, Liangliang Wang, Yongmei Wu, Dongmei Xu, Man Chen, Jiahong Molecules Article The abundant fruit hulls of tea-oil tree (Camellia oleifera) are still underutilized and wastefully discaded to pollute the environment. In order to solve this problem and better utilize the fruit hulls of C. oleifera, a microwave-assisted extraction system was used to extract their polyphenols using water as the extraction solvent. A central composite design (CCD) was used to monitor the effects of three extraction processing parameters – liquid:solid ratio (mL/g), extraction time (min) and extraction temperature (°C) – on the polyphenol yield (%). The results showed that the optimal conditions were liquid:solid ratio of 15.33:1 (mL/g), extraction time of 35 min and extraction temperature of 76 °C. Validation tests indicated that under the optimized conditions the actual yield of polyphenols was 15.05 ± 0.04% with RSD = 0.21% (n = 5), which was in good agreement with the predicted yield. Phenolic compounds in the extracts were analysed by HPLC, and gallic acid was found to be the predominant constituent. The total flavonoid content in the extracts was determined and high total flavonoid content was revealed (140.06 mg/g dry material). MDPI 2011-05-27 /pmc/articles/PMC6264374/ /pubmed/21623313 http://dx.doi.org/10.3390/molecules16064428 Text en © 2011 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 license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Article Zhang, Liangliang Wang, Yongmei Wu, Dongmei Xu, Man Chen, Jiahong Microwave-Assisted Extraction of Polyphenols from Camellia oleifera Fruit Hull |
title | Microwave-Assisted Extraction of Polyphenols from Camellia oleifera Fruit Hull |
title_full | Microwave-Assisted Extraction of Polyphenols from Camellia oleifera Fruit Hull |
title_fullStr | Microwave-Assisted Extraction of Polyphenols from Camellia oleifera Fruit Hull |
title_full_unstemmed | Microwave-Assisted Extraction of Polyphenols from Camellia oleifera Fruit Hull |
title_short | Microwave-Assisted Extraction of Polyphenols from Camellia oleifera Fruit Hull |
title_sort | microwave-assisted extraction of polyphenols from camellia oleifera fruit hull |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6264374/ https://www.ncbi.nlm.nih.gov/pubmed/21623313 http://dx.doi.org/10.3390/molecules16064428 |
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