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Effect of Drying Methods on the Steroidal Alkaloid Content of Potato Peels, Shoots and Berries

The present study has found that dried potato samples yielded significantly higher levels of steroidal alkaloids such as α-solanine and α-chaconine than the corresponding fresh samples, as determined by the UPLC-MS/MS technique. Among the drying techniques used, air drying had the highest effect on...

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Autores principales: Hossain, Mohammad B., Brunton, Nigel P., Rai, Dilip K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6273710/
https://www.ncbi.nlm.nih.gov/pubmed/27023503
http://dx.doi.org/10.3390/molecules21040403
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author Hossain, Mohammad B.
Brunton, Nigel P.
Rai, Dilip K.
author_facet Hossain, Mohammad B.
Brunton, Nigel P.
Rai, Dilip K.
author_sort Hossain, Mohammad B.
collection PubMed
description The present study has found that dried potato samples yielded significantly higher levels of steroidal alkaloids such as α-solanine and α-chaconine than the corresponding fresh samples, as determined by the UPLC-MS/MS technique. Among the drying techniques used, air drying had the highest effect on steroidal alkaloid contents, followed by freeze drying and vacuum oven drying. There was no significant difference between the freeze dried and vacuum oven dried samples in their α-chaconine contents. However, freeze dried potato shoots and berries had significantly higher α-solanine contents (825 µg/g dry weight (DW) in shoots and 2453 µg/g DW in berries) than the vacuum oven dried ones (325 µg/g dry weight (DW) in shoots and 2080 µg/g DW in berries). The kinetics of steroidal alkaloid contents of potato shoots during air drying were monitored over a period of 21 days. Both α-solanine and α-chaconine content increased to their maximum values, 875 µg/g DW and 3385 µg/g DW, respectively, after 7 days of drying. The steroidal alkaloid contents of the shoots decreased significantly at day 9, and then remained unchanged until day 21. In line with the potato shoots, air dried potato tuber peels also had higher steroidal alkaloid content than the freeze dried and vacuum oven dried samples. However, a significant decrease of steroidal alkaloid content was observed in air dried potato berries, possibly due to degradation during slicing of the whole berries prior to air drying. Remarkable variation in steroidal alkaloid contents among different tissue types of potato plants was observed with the potato flowers having the highest content.
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spelling pubmed-62737102018-12-28 Effect of Drying Methods on the Steroidal Alkaloid Content of Potato Peels, Shoots and Berries Hossain, Mohammad B. Brunton, Nigel P. Rai, Dilip K. Molecules Article The present study has found that dried potato samples yielded significantly higher levels of steroidal alkaloids such as α-solanine and α-chaconine than the corresponding fresh samples, as determined by the UPLC-MS/MS technique. Among the drying techniques used, air drying had the highest effect on steroidal alkaloid contents, followed by freeze drying and vacuum oven drying. There was no significant difference between the freeze dried and vacuum oven dried samples in their α-chaconine contents. However, freeze dried potato shoots and berries had significantly higher α-solanine contents (825 µg/g dry weight (DW) in shoots and 2453 µg/g DW in berries) than the vacuum oven dried ones (325 µg/g dry weight (DW) in shoots and 2080 µg/g DW in berries). The kinetics of steroidal alkaloid contents of potato shoots during air drying were monitored over a period of 21 days. Both α-solanine and α-chaconine content increased to their maximum values, 875 µg/g DW and 3385 µg/g DW, respectively, after 7 days of drying. The steroidal alkaloid contents of the shoots decreased significantly at day 9, and then remained unchanged until day 21. In line with the potato shoots, air dried potato tuber peels also had higher steroidal alkaloid content than the freeze dried and vacuum oven dried samples. However, a significant decrease of steroidal alkaloid content was observed in air dried potato berries, possibly due to degradation during slicing of the whole berries prior to air drying. Remarkable variation in steroidal alkaloid contents among different tissue types of potato plants was observed with the potato flowers having the highest content. MDPI 2016-03-25 /pmc/articles/PMC6273710/ /pubmed/27023503 http://dx.doi.org/10.3390/molecules21040403 Text en © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hossain, Mohammad B.
Brunton, Nigel P.
Rai, Dilip K.
Effect of Drying Methods on the Steroidal Alkaloid Content of Potato Peels, Shoots and Berries
title Effect of Drying Methods on the Steroidal Alkaloid Content of Potato Peels, Shoots and Berries
title_full Effect of Drying Methods on the Steroidal Alkaloid Content of Potato Peels, Shoots and Berries
title_fullStr Effect of Drying Methods on the Steroidal Alkaloid Content of Potato Peels, Shoots and Berries
title_full_unstemmed Effect of Drying Methods on the Steroidal Alkaloid Content of Potato Peels, Shoots and Berries
title_short Effect of Drying Methods on the Steroidal Alkaloid Content of Potato Peels, Shoots and Berries
title_sort effect of drying methods on the steroidal alkaloid content of potato peels, shoots and berries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6273710/
https://www.ncbi.nlm.nih.gov/pubmed/27023503
http://dx.doi.org/10.3390/molecules21040403
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