Frost decreases content of sugars, ascorbic acid and some quercetin glycosides but stimulates selected carotenes in Rosa canina hips

Journal of Plant Physiology
Vlasta CunjaValentina Schmitzer

Abstract

Primary and secondary metabolites of Rosa canina hips were determined by HPLC/MS during ripening and after frost damage. Rose hips were harvested six times from the beginning of September until the beginning of December. Color parameters a*, b* and L* decreased during maturation. Glucose and fructose were the predominant sugars representing up to 92% total sugars, and citric acid was the major organic acid detected in rose hips (constituting up to 58% total organic acids). Total sugar and ascorbic acid content significantly decreased after frost damage; from 42.2 to 25.9 g 100 g(-1) DW for sugars and from 716.8 to 176.0 mg 100 g(-1) DW for ascorbic acid. Conversely, β-carotene and lycopene levels increased in frostbitten rose hips to 22.1 and 113.2 mg 100 g(-1) DW, respectively. In addition to cyanidin-3-glucoside (highest level in hips was 125.7 μg 100 g (-1) DW), 45 different phenolic compounds have been identified. The most abundant were proanthocyanidins (their levels amounted up to 90% of total flavanol content) and their content showed no significant differences during maturation. The levels of catechin, phloridzin, flavanones and several quercetin glycosides were highest on the first three sampling dates and decreased af...Continue Reading

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Citations

Jan 17, 2016·Journal of Food Science·Vlasta CunjaValentina Schmitzer
Sep 13, 2016·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Meng-Hua LiuJing-Yu He
Jul 25, 2020·Journal of the Science of Food and Agriculture·Valentina SchmitzerAna Slatnar
Sep 13, 2020·Biomedicines·Zorița DiaconeasaCarmen Socaciu
Jun 8, 2017·International Journal of Molecular Sciences·Inés MármolMaría Jesús Rodríguez-Yoldi
Dec 5, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Aliona Ghendov-MosanuMarius Niculaua
Nov 18, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Milena PolumackanyczAgnieszka Viapiana

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