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Improvement of phytochemical and quality characteristics of Dracocephalum kotschyi by drying methods
This experiment was conducted to evaluate the effects of different drying methods on drying parameters and qualitative characteristics of Dracocephalum kotschyi in a completely randomized design with three replications. Treatments included shade drying as control, sun drying, cabinet drying (CD at 5...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10345690/ https://www.ncbi.nlm.nih.gov/pubmed/37457179 http://dx.doi.org/10.1002/fsn3.3351 |
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author | Zamani, Sahar Bakhshi, Davood Sahraroo, Amir Ebadi, Mohammad‐Taghi |
author_facet | Zamani, Sahar Bakhshi, Davood Sahraroo, Amir Ebadi, Mohammad‐Taghi |
author_sort | Zamani, Sahar |
collection | PubMed |
description | This experiment was conducted to evaluate the effects of different drying methods on drying parameters and qualitative characteristics of Dracocephalum kotschyi in a completely randomized design with three replications. Treatments included shade drying as control, sun drying, cabinet drying (CD at 50 and 60°C), refractance window drying (RWD), infrared drying (IRD) at 200 and 300 W, and combination of RWD+ IRD at 200 and 300 W. According to the results, IRD, RWD, and RWD+ IRD effectively maintained valuable secondary metabolites compared to the conventional drying methods. The maximum total phenol content (2.7 and 2.66 mg GAE/g dry weight), total flavonoid content (2.26 and 2.33 mg QE/g dry weight), antioxidant activity (79% and 78.33%), and essential oil content (0.65% and 0.76%) were obtained from plants dried by RWD and IRD. Samples dried by RWD, IRD, and RWD+ IRD had high color quality, acceptable green color, and less browning. Also, RWD and IRD methods effectively reduced microbial contamination of dried plants compared to the control and other methods. The minimum aerobic mesophiles, mold, yeast, and coliforms were observed at 3.11, 0, and 1.47 log CFU/g in IRD 300 W and 3.17, 1, and 1.30 log CFU/g in RWD. D. kotschyi dried at CD 50°C had the maximum microbial contamination. Generally, according to the obtained results, RWD and IRD methods are suggested for drying of D. kotschyi and similar herbs due to shortening the drying time, preserving and improving the quality properties of dried plants. |
format | Online Article Text |
id | pubmed-10345690 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-103456902023-07-15 Improvement of phytochemical and quality characteristics of Dracocephalum kotschyi by drying methods Zamani, Sahar Bakhshi, Davood Sahraroo, Amir Ebadi, Mohammad‐Taghi Food Sci Nutr Original Articles This experiment was conducted to evaluate the effects of different drying methods on drying parameters and qualitative characteristics of Dracocephalum kotschyi in a completely randomized design with three replications. Treatments included shade drying as control, sun drying, cabinet drying (CD at 50 and 60°C), refractance window drying (RWD), infrared drying (IRD) at 200 and 300 W, and combination of RWD+ IRD at 200 and 300 W. According to the results, IRD, RWD, and RWD+ IRD effectively maintained valuable secondary metabolites compared to the conventional drying methods. The maximum total phenol content (2.7 and 2.66 mg GAE/g dry weight), total flavonoid content (2.26 and 2.33 mg QE/g dry weight), antioxidant activity (79% and 78.33%), and essential oil content (0.65% and 0.76%) were obtained from plants dried by RWD and IRD. Samples dried by RWD, IRD, and RWD+ IRD had high color quality, acceptable green color, and less browning. Also, RWD and IRD methods effectively reduced microbial contamination of dried plants compared to the control and other methods. The minimum aerobic mesophiles, mold, yeast, and coliforms were observed at 3.11, 0, and 1.47 log CFU/g in IRD 300 W and 3.17, 1, and 1.30 log CFU/g in RWD. D. kotschyi dried at CD 50°C had the maximum microbial contamination. Generally, according to the obtained results, RWD and IRD methods are suggested for drying of D. kotschyi and similar herbs due to shortening the drying time, preserving and improving the quality properties of dried plants. John Wiley and Sons Inc. 2023-04-26 /pmc/articles/PMC10345690/ /pubmed/37457179 http://dx.doi.org/10.1002/fsn3.3351 Text en © 2023 The Authors. Food Science & Nutrition published by Wiley Periodicals LLC. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Articles Zamani, Sahar Bakhshi, Davood Sahraroo, Amir Ebadi, Mohammad‐Taghi Improvement of phytochemical and quality characteristics of Dracocephalum kotschyi by drying methods |
title | Improvement of phytochemical and quality characteristics of Dracocephalum kotschyi by drying methods |
title_full | Improvement of phytochemical and quality characteristics of Dracocephalum kotschyi by drying methods |
title_fullStr | Improvement of phytochemical and quality characteristics of Dracocephalum kotschyi by drying methods |
title_full_unstemmed | Improvement of phytochemical and quality characteristics of Dracocephalum kotschyi by drying methods |
title_short | Improvement of phytochemical and quality characteristics of Dracocephalum kotschyi by drying methods |
title_sort | improvement of phytochemical and quality characteristics of dracocephalum kotschyi by drying methods |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10345690/ https://www.ncbi.nlm.nih.gov/pubmed/37457179 http://dx.doi.org/10.1002/fsn3.3351 |
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