The Chemical Composition and Antioxidant Properties of Common Dandelion Leaves Compared to Sea Buckthorn

Abstract

The aim of this study was to determine the chemical composition and antioxidant activity of dandelion [Taraxacum officinale (Weber) ex Wigg.] and sea buckthorn (Hippophae rhamnoides Rousi) leaves grown in Poland (53°20′35″N, 14°58′10″E). Both the leaves of sea buckthorn and common dandelion were found to be a very good source of essential nutrients and elements. The dandelion leaves contained significantly more protein, fat, and crude fibre than those from sea buckthorn. Dandelion leaves also contained more phosphorus, potassium, calcium, iron, and zinc. Although the dandelion leaves were a good source of biologically active substances, sea buckthorn leaves exhibited a significantly higher level of antioxidant activity as measured by ABTS. Dandelion leaves were richer in tocopherols, thiamine, riboflavin, and niacin while the sea buckthorn leaves contained higher levels of L-ascorbic acid.

Enhancement of corrosion resistance of the cooling systems in desalination plants by green inhibitor

“…At higher retention times, the chromatogram shows a series of peaks that are assigned to phenolic-based compounds in the water/alcohol extract: some of these peaks have been identified including p-coumaric acid, caffeic acid and ellagic acid. These are polyphenols that were already identified in TOE 26,27,29,33 . Figure 3 shows the effect of time on the inhibition efficiency (η W %).…”

“…The TOE extract is predominantly composed of a few of organic compounds. Several studies have reported the composition of different parts of Taraxacum officinale plant for nutritional facts and presence of vitamins and active principles 25,27 . The extraction process obviously influences the composition of the solution: Jung et al 33 compared the 1 H NMR profiles of aqueous and organic extracts (for another species of Taraxacum plant, T. coreanum); Kenny et al also observed substantial differences in the extracted species while using aqueous or solvent extracting agents 29 .…”

“…This extract (TOE) was obtained from Taraxacum officinale, which is a compound used in Chinese medicine and in various modern pharmaceutical formulations 24,25 . Taraxacum officinale is well known for its antioxidant activity, having a high content of polyphenols such as sesquiterpene, lactones, phenylpropanoids, triterpenoid saponins and polysaccharides 26,27 . Most of these compounds contain heteroatom (e.g., nitrogen and oxygen) and multiple bonds in their molecules; this may contribute to facilitate the adsorption of TOE at the surface of metal pipes.…”

“…TOE can be readily and inexpensively extracted from abundant and widely disseminated resources. The extraction of active portions of the plant is processed using selective solvent methods 25,[27][28][29] . It is noteworthy that TOE is easily biodegradable.…”

The effects of nettle (Urtica dioica), spiny sowthistle (Sonchus asper) and dandelion (Taraxacum officinale) on the fish quality during storage period

“…Only few researches available about antioxidant effects of dandelion on fish (Tan et al, 2018). On the other hand, several researchers were focused on antimicrobial and antioxidant effects of mentioned herbs on food products (Aksu and Kaya, 2004;Biel et al, 2017;El-Alim et al, 1999;Frankel et al, 1996;Gülçin et al, 2004;Ivanov, 2014;Karabacak and Bozkurt, 2008;Mavi et al, 2004;Oz, 2014;Ozyurt et al, 2007;Shah et al, 2014). Biel et al, (2017) have studied on the chemical composition and antioxidant properties of common dandelion leaves contrasted with sea buckthorn and indicated that the leaves of dandelion and sea buckthorn may be used as good source of biologically active substances in the human diet.…”