Content of Phenolic Compounds and Organic Acids in the Flowers of Selected Tulipa gesneriana Cultivars
2020
Agnieszka Krzymińska | Monika Gąsecka | Zuzanna Magdziak
The study focused on the determination of phenolic acids, flavonoids and organic acids in five tulip cultivars &lsquo:Barcelona&rsquo:, &lsquo:Columbus&rsquo:, &lsquo:Strong Gold&rsquo:, &lsquo:Super Parrot&rsquo: and &lsquo:Tropicana&rsquo:. The cultivars grown in field and in a greenhouse were exposed after cutting to different times of storage (0, 3 and 6 days). The phenolic profile contained 4-hydroxybenzoic, 2,5-dihydroxybenzoic, gallic, vanillic, syringic, salicylic, protocatechuic, trans-cinnamic, p-coumaric, caffeic, ferulic, chlorogenic and sinapic acids, as well as quercetin, rutin, luteonin, catechin and vitexin. The mean phenolic acid content was in the following order: &lsquo:Columbus&rsquo: and &lsquo:Tropicana&rsquo: >: &rsquo:Barcelona&rsquo: >: &rsquo:Strong Gold&rsquo: >: &rsquo:Super Parrot&rsquo:, while the levels of flavonoids were as follows: &lsquo:Strong Gold&rsquo: >: &rsquo:Barcelona&rsquo: >: &rsquo:Tropicana&rsquo: >: &rsquo:Columbus&rsquo: >: &rsquo:Super Parrot&rsquo:. The highest content of phenolic acids was confirmed for Columbus and Tropicana, while the lowest was for Super Parrot. However total phenolic content was very similar, observed between the place of cultivation, time of storage and cultivars. Malonic, succinic, acetic and citric acids were the major organic acid components in tulip petals. More organic acids (except malonic) were accumulated in tulip petals from fields than those from the greenhouse, while changes during storage were strictly correlated with cultivars.
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