Effect of hydrothermal processing on total polyphenolics and antioxidant potential of underutilized leafy vegetables, Boerhaavia diffusa and Portulaca oleracea
Objective: To investigate the effect of different processing methods on antioxidant properties of acetone extract of aerial parts from Boerhaavia diffusa and Portulaca oleracea. Methods: The total phenolic and flavonoid contents were determined by Folin-Ciocalteau and aluminum chloride method, respec...
Published in: | Asian Pacific Journal of Tropical Biomedicine |
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Wolters Kluwer Medknow Publications
2014
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Online Access: | https://doi.org/10.12980/APJTB.4.2014C1108 https://doaj.org/article/9bdd9830ebae4646a3971270723c1693 |
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ftdoajarticles:oai:doaj.org/article:9bdd9830ebae4646a3971270723c1693 2023-05-15T15:12:12+02:00 Effect of hydrothermal processing on total polyphenolics and antioxidant potential of underutilized leafy vegetables, Boerhaavia diffusa and Portulaca oleracea Gunasekaran Nagarani Arumugam Abirami Prasad Nikitha Perumal Siddhuraju 2014-05-01T00:00:00Z https://doi.org/10.12980/APJTB.4.2014C1108 https://doaj.org/article/9bdd9830ebae4646a3971270723c1693 EN eng Wolters Kluwer Medknow Publications http://www.sciencedirect.com/science/article/pii/S2221169115303129 https://doaj.org/toc/2221-1691 2221-1691 doi:10.12980/APJTB.4.2014C1108 https://doaj.org/article/9bdd9830ebae4646a3971270723c1693 Asian Pacific Journal of Tropical Biomedicine, Vol 4, Iss S1, Pp S468-S477 (2014) Boerhaavia diffusa Portulaca oleracea Green vegetables Boiling and bleaching Phenolics Antioxidant capacity Arctic medicine. Tropical medicine RC955-962 Biology (General) QH301-705.5 article 2014 ftdoajarticles https://doi.org/10.12980/APJTB.4.2014C1108 2022-12-30T23:53:58Z Objective: To investigate the effect of different processing methods on antioxidant properties of acetone extract of aerial parts from Boerhaavia diffusa and Portulaca oleracea. Methods: The total phenolic and flavonoid contents were determined by Folin-Ciocalteau and aluminum chloride method, respectively. FRAP, metal chelating activity, DPPH, ABTS, nitric oxide, hydroxyl and superoxide radical scavenging activities, carotene/linoleic acid bleaching activity were used for the determination of antioxidant capacity. Results: The total phenolics in Boerhaavia diffusa (82.79–162.80 mg GAE/g extract) were found to be higher when compared to that of Portulaca oleracea (22.94–10.02 mg GAE/g extract). Hydrothermal processing enhanced the level of inhibition on synthetic radicals such as DPPH (3 439–309 549 mmol TE/g extract) and ABTS (17 808–53 818 mmol TE/g extract) as well as biologically relevant radicals such as superoxide anion (70%-90%) and nitric oxide (49%-57%). In addition, boiling of the vegetables were found to be maximum capacity of FRAP (6 404.95 mmol Fe (II)/g extract) and metal chelating activity (1.53 mg EDTA/g extract) than the respective raw samples. Conclusions: The present investigation suggests that the processing enhance the functionality and improves the availability of bioactive substances of these vegetables. In addition, they also exhibited more potent antioxidant activity. Therefore these natural weeds from the crop land ecosystem could be suggested as cost effective indigenous green vegetables for human diet and potential feed resources for animals. Further extensive studies on role and importance of those weeds in sustaining the agro biodiversity are also needed. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Asian Pacific Journal of Tropical Biomedicine 4 S468 S477 |
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Directory of Open Access Journals: DOAJ Articles |
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topic |
Boerhaavia diffusa Portulaca oleracea Green vegetables Boiling and bleaching Phenolics Antioxidant capacity Arctic medicine. Tropical medicine RC955-962 Biology (General) QH301-705.5 |
spellingShingle |
Boerhaavia diffusa Portulaca oleracea Green vegetables Boiling and bleaching Phenolics Antioxidant capacity Arctic medicine. Tropical medicine RC955-962 Biology (General) QH301-705.5 Gunasekaran Nagarani Arumugam Abirami Prasad Nikitha Perumal Siddhuraju Effect of hydrothermal processing on total polyphenolics and antioxidant potential of underutilized leafy vegetables, Boerhaavia diffusa and Portulaca oleracea |
topic_facet |
Boerhaavia diffusa Portulaca oleracea Green vegetables Boiling and bleaching Phenolics Antioxidant capacity Arctic medicine. Tropical medicine RC955-962 Biology (General) QH301-705.5 |
description |
Objective: To investigate the effect of different processing methods on antioxidant properties of acetone extract of aerial parts from Boerhaavia diffusa and Portulaca oleracea. Methods: The total phenolic and flavonoid contents were determined by Folin-Ciocalteau and aluminum chloride method, respectively. FRAP, metal chelating activity, DPPH, ABTS, nitric oxide, hydroxyl and superoxide radical scavenging activities, carotene/linoleic acid bleaching activity were used for the determination of antioxidant capacity. Results: The total phenolics in Boerhaavia diffusa (82.79–162.80 mg GAE/g extract) were found to be higher when compared to that of Portulaca oleracea (22.94–10.02 mg GAE/g extract). Hydrothermal processing enhanced the level of inhibition on synthetic radicals such as DPPH (3 439–309 549 mmol TE/g extract) and ABTS (17 808–53 818 mmol TE/g extract) as well as biologically relevant radicals such as superoxide anion (70%-90%) and nitric oxide (49%-57%). In addition, boiling of the vegetables were found to be maximum capacity of FRAP (6 404.95 mmol Fe (II)/g extract) and metal chelating activity (1.53 mg EDTA/g extract) than the respective raw samples. Conclusions: The present investigation suggests that the processing enhance the functionality and improves the availability of bioactive substances of these vegetables. In addition, they also exhibited more potent antioxidant activity. Therefore these natural weeds from the crop land ecosystem could be suggested as cost effective indigenous green vegetables for human diet and potential feed resources for animals. Further extensive studies on role and importance of those weeds in sustaining the agro biodiversity are also needed. |
format |
Article in Journal/Newspaper |
author |
Gunasekaran Nagarani Arumugam Abirami Prasad Nikitha Perumal Siddhuraju |
author_facet |
Gunasekaran Nagarani Arumugam Abirami Prasad Nikitha Perumal Siddhuraju |
author_sort |
Gunasekaran Nagarani |
title |
Effect of hydrothermal processing on total polyphenolics and antioxidant potential of underutilized leafy vegetables, Boerhaavia diffusa and Portulaca oleracea |
title_short |
Effect of hydrothermal processing on total polyphenolics and antioxidant potential of underutilized leafy vegetables, Boerhaavia diffusa and Portulaca oleracea |
title_full |
Effect of hydrothermal processing on total polyphenolics and antioxidant potential of underutilized leafy vegetables, Boerhaavia diffusa and Portulaca oleracea |
title_fullStr |
Effect of hydrothermal processing on total polyphenolics and antioxidant potential of underutilized leafy vegetables, Boerhaavia diffusa and Portulaca oleracea |
title_full_unstemmed |
Effect of hydrothermal processing on total polyphenolics and antioxidant potential of underutilized leafy vegetables, Boerhaavia diffusa and Portulaca oleracea |
title_sort |
effect of hydrothermal processing on total polyphenolics and antioxidant potential of underutilized leafy vegetables, boerhaavia diffusa and portulaca oleracea |
publisher |
Wolters Kluwer Medknow Publications |
publishDate |
2014 |
url |
https://doi.org/10.12980/APJTB.4.2014C1108 https://doaj.org/article/9bdd9830ebae4646a3971270723c1693 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Asian Pacific Journal of Tropical Biomedicine, Vol 4, Iss S1, Pp S468-S477 (2014) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2221169115303129 https://doaj.org/toc/2221-1691 2221-1691 doi:10.12980/APJTB.4.2014C1108 https://doaj.org/article/9bdd9830ebae4646a3971270723c1693 |
op_doi |
https://doi.org/10.12980/APJTB.4.2014C1108 |
container_title |
Asian Pacific Journal of Tropical Biomedicine |
container_volume |
4 |
container_start_page |
S468 |
op_container_end_page |
S477 |
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1766342925122273280 |