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Article

Low Temperatures Affect the Physiological Status and Phytochemical Content of Flat Leaf Kale (Brassica oleracea var. acephala) Sprouts

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Department of Food Technology, University Center Koprivnica, University North, Trg Dr. Žarka Dolinara 1, 48 000 Koprivnica, Croatia
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Department for Molecular Biology, Ruđer Bošković Institute, Bijenička 54, P.O. Box 180, 10 002 Zagreb, Croatia
3
Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10 000 Zagreb, Croatia
*
Author to whom correspondence should be addressed.
Academic Editor: Sabine Martina Harrison
Foods 2022, 11(3), 264; https://doi.org/10.3390/foods11030264
Received: 27 December 2021 / Revised: 14 January 2022 / Accepted: 17 January 2022 / Published: 19 January 2022
(This article belongs to the Special Issue Sprouts and Microgreens: Phytochemicals, Health Benefits and Safety)
Consumption of plants in the juvenile stage becomes popular because sprouts are easy to grow, and they can be a tasty source of micro- and macro-nutrients and various phytochemicals. However, some environmental factors during sprout growth can affect their characteristics. In this article, we investigated how low temperatures during cultivation (8 °C) and additional exposure to freezing temperatures (−8 °C) affect the physiological status and phytochemical content of kale (Brassica oleracea var. acephala) sprouts compared to the control grown at 21 °C. We conducted five independent laboratory experiments and found that low temperature significantly increased proline content and decreased sprouts yield. In addition, low temperature caused a significant decrease in carotenoid and flavonoid content, while phenolic acid content and total glucosinolates content increased, but individual glucosinolates were differentially affected. Our results indicate that low temperatures affect the physiological status of kale sprouts and affect the content of phytochemicals. View Full-Text
Keywords: flat leaf kale; low temperature; phytochemicals; carotenoids; polyphenols; glucosinolates flat leaf kale; low temperature; phytochemicals; carotenoids; polyphenols; glucosinolates
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MDPI and ACS Style

Šamec, D.; Ljubej, V.; Redovniković, I.R.; Fistanić, S.; Salopek-Sondi, B. Low Temperatures Affect the Physiological Status and Phytochemical Content of Flat Leaf Kale (Brassica oleracea var. acephala) Sprouts. Foods 2022, 11, 264. https://doi.org/10.3390/foods11030264

AMA Style

Šamec D, Ljubej V, Redovniković IR, Fistanić S, Salopek-Sondi B. Low Temperatures Affect the Physiological Status and Phytochemical Content of Flat Leaf Kale (Brassica oleracea var. acephala) Sprouts. Foods. 2022; 11(3):264. https://doi.org/10.3390/foods11030264

Chicago/Turabian Style

Šamec, Dunja, Valentina Ljubej, Ivana R. Redovniković, Stjepana Fistanić, and Branka Salopek-Sondi. 2022. "Low Temperatures Affect the Physiological Status and Phytochemical Content of Flat Leaf Kale (Brassica oleracea var. acephala) Sprouts" Foods 11, no. 3: 264. https://doi.org/10.3390/foods11030264

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