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A composite carbon-based solid acid-supported palladium catalyst (Pd/C-SO(3)H) for hydrogenolysis of plant-derived polymeric proanthocyanidins
A composite catalyst, Pd/C-SO(3)H, has been prepared to depolymerize plant-derived polymeric proanthocyanidins (PPC). Different reaction conditions were explored and the catalyst was shown to have good performance and recyclability, as well as good thermal and acid–base stability. UV, FTIR and (1)H...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054284/ https://www.ncbi.nlm.nih.gov/pubmed/35517777 http://dx.doi.org/10.1039/d0ra03518a |
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author | Zhu, Hongfei Ni, Liwen Ren, Shixue Fang, Guizhen Li, Shujun |
author_facet | Zhu, Hongfei Ni, Liwen Ren, Shixue Fang, Guizhen Li, Shujun |
author_sort | Zhu, Hongfei |
collection | PubMed |
description | A composite catalyst, Pd/C-SO(3)H, has been prepared to depolymerize plant-derived polymeric proanthocyanidins (PPC). Different reaction conditions were explored and the catalyst was shown to have good performance and recyclability, as well as good thermal and acid–base stability. UV, FTIR and (1)H NMR analyses showed that the depolymerization products (oligomeric proanthocyanidins, OPC) retained a condensed flavanol polyphenol structure and that the basic structural units of the polymers had not been destroyed. The antioxidant activity of the OPC was better than that of the PPC, and also better than that of 2,6-di-tert-butyl-4-methylphenol, which is widely used in industry, including as a food additive. OPC could, therefore, be developed as a commercially useful radical chain-breaking antioxidant. The preparation of Pd/C-SO(3)H provides an example of the design and development of a new composite catalyst that has high practical value. The study also provides a new technical route for the depolymerization of PPC and thus makes a useful contribution to the high-value utilization of renewable plant resources. |
format | Online Article Text |
id | pubmed-9054284 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90542842022-05-04 A composite carbon-based solid acid-supported palladium catalyst (Pd/C-SO(3)H) for hydrogenolysis of plant-derived polymeric proanthocyanidins Zhu, Hongfei Ni, Liwen Ren, Shixue Fang, Guizhen Li, Shujun RSC Adv Chemistry A composite catalyst, Pd/C-SO(3)H, has been prepared to depolymerize plant-derived polymeric proanthocyanidins (PPC). Different reaction conditions were explored and the catalyst was shown to have good performance and recyclability, as well as good thermal and acid–base stability. UV, FTIR and (1)H NMR analyses showed that the depolymerization products (oligomeric proanthocyanidins, OPC) retained a condensed flavanol polyphenol structure and that the basic structural units of the polymers had not been destroyed. The antioxidant activity of the OPC was better than that of the PPC, and also better than that of 2,6-di-tert-butyl-4-methylphenol, which is widely used in industry, including as a food additive. OPC could, therefore, be developed as a commercially useful radical chain-breaking antioxidant. The preparation of Pd/C-SO(3)H provides an example of the design and development of a new composite catalyst that has high practical value. The study also provides a new technical route for the depolymerization of PPC and thus makes a useful contribution to the high-value utilization of renewable plant resources. The Royal Society of Chemistry 2020-06-01 /pmc/articles/PMC9054284/ /pubmed/35517777 http://dx.doi.org/10.1039/d0ra03518a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Zhu, Hongfei Ni, Liwen Ren, Shixue Fang, Guizhen Li, Shujun A composite carbon-based solid acid-supported palladium catalyst (Pd/C-SO(3)H) for hydrogenolysis of plant-derived polymeric proanthocyanidins |
title | A composite carbon-based solid acid-supported palladium catalyst (Pd/C-SO(3)H) for hydrogenolysis of plant-derived polymeric proanthocyanidins |
title_full | A composite carbon-based solid acid-supported palladium catalyst (Pd/C-SO(3)H) for hydrogenolysis of plant-derived polymeric proanthocyanidins |
title_fullStr | A composite carbon-based solid acid-supported palladium catalyst (Pd/C-SO(3)H) for hydrogenolysis of plant-derived polymeric proanthocyanidins |
title_full_unstemmed | A composite carbon-based solid acid-supported palladium catalyst (Pd/C-SO(3)H) for hydrogenolysis of plant-derived polymeric proanthocyanidins |
title_short | A composite carbon-based solid acid-supported palladium catalyst (Pd/C-SO(3)H) for hydrogenolysis of plant-derived polymeric proanthocyanidins |
title_sort | composite carbon-based solid acid-supported palladium catalyst (pd/c-so(3)h) for hydrogenolysis of plant-derived polymeric proanthocyanidins |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054284/ https://www.ncbi.nlm.nih.gov/pubmed/35517777 http://dx.doi.org/10.1039/d0ra03518a |
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