Effect of Biofortification with Iodine by 8-Hydroxy-7-iodo-5-quinolinesulfonic Acid and 5-Chloro-7-iodo-8-quinolinol on the Chemical Composition and Antioxidant Properties of Potato Tubers (Solanum tuberosum L.) in a Pot Experiment
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Published:2023-04-07
Issue:8
Volume:13
Page:4659
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ISSN:2076-3417
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Container-title:Applied Sciences
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language:en
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Short-container-title:Applied Sciences
Author:
Krzemińska Joanna1ORCID, Smoleń Sylwester2ORCID, Kowalska Iwona2, Pitala Joanna3, Sularz Olga1ORCID, Koronowicz Aneta1
Affiliation:
1. Department of Human Nutrition and Dietetics, Faculty of Food Technology, University of Agriculture in Krakow, Balicka 122, 30-149 Krakow, Poland 2. Department of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture in Krakow, Al. 29 Listopada 54, 31-425 Krakow, Poland 3. Laboratory of Mass Spectrometry, Faculty of Biotechnology and Horticulture, University of Agriculture in Krakow, Al. 29 Listopada 54, 31-425 Krakow, Poland
Abstract
Iodine deficiency impacts on the development of thyroid disease. Vegetables and fruits usually have a low iodine content; hence, it makes sense to increase their iodine content. Potato is consumed daily by millions of consumers and would, therefore, be a good target for biofortification with iodine programs. The aim of this study was to determine the effects of biofortification via the application of soil solutions of two iodoquinolines [8-hydroxy-7-iodo-5-quinolinic acid (8-OH-7-I-5QSA) and 5-chloro-7-iodo-8-quinoline (5-Cl-7-I-8-Q)] and KIO3 (as an iodine positive control) on the iodine content and basic chemical composition, macro and micronutrient content, nitrogen compounds, vitamin C, and antioxidant potential of potato tubers Solanum tuberosum L. The biofortification process had no significant effect on the tuber weight in yield. The application of I in forms of KIO3, 8-OH-7-I-5QSA, 5-Cl-7-I-8-Q resulted in an increase in the I content of tubers (1400.15; 693.65; 502.79, respectively, compared with control, 24.96 µg·kg−1 d.w.). This also resulted in a decrease in elements that are harmful to consumers, such as: Al, Ni, Cr, Ag, Pb and Tl. The enrichment of tubers with 8-OH-7-I-5QSA and 5-Cl-7-I-8-Q resulted in a significant reduction in the content of ammonium ions (from 19.16 to 14.96; 13.52 mg∙kg−1 f.w.) and chlorides (from 423.59 to 264.92; 265.31 mg∙kg−1 f.w.). Biofortification with 8-OH-7-I-5QSA improved the polyphenolic profile of the potato tuber from 197.31 to 233.33 mg GAE·100 g−1 f.w. A significant reduction in the carotenoid content of tubers after the enrichment of the plant with iodine in KIO3, 8-OH-7-I-5QSA and 5-Cl-7-I-8-Q (from 3.46 to 2.96, 2.45, and 1.47 mg∙100 g−1 d.w., respectively) was observed. It can be postulated that the production of potatoes enriched with iodoquinolines and/or KIO3 is worthwhile, as it can provide a good source of I in the diet and simultaneously reduce the risk of developing deficiencies.
Funder
National Science Centre
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
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