Working Paper Article Version 1 This version is not peer-reviewed

Assessments of Sugars, Organic Acids, Amino Acids, Polyphenols, Macro and Trace Elements from Fresh Tree Peony Flowers

Version 1 : Received: 19 March 2019 / Approved: 20 March 2019 / Online: 20 March 2019 (15:09:50 CET)

How to cite: Zhao, J.; Xu, Y.; Zhang, Z.; He, Z.; Lan, W.; Zhang, J. Assessments of Sugars, Organic Acids, Amino Acids, Polyphenols, Macro and Trace Elements from Fresh Tree Peony Flowers. Preprints 2019, 2019030196 Zhao, J.; Xu, Y.; Zhang, Z.; He, Z.; Lan, W.; Zhang, J. Assessments of Sugars, Organic Acids, Amino Acids, Polyphenols, Macro and Trace Elements from Fresh Tree Peony Flowers. Preprints 2019, 2019030196

Abstract

Tree peony flowers are traditional ornamental and medicinal materials in China. In this study, 23 tree peony flowers at a broad color spectrum were analyzed. Gas chromatography-mass spectrometer (GC-MS) revealed that tree peony flowers are rich in sugars and organic acids. Up to 18 amino acids were identified by liquid chromatography-mass spectrometer (LC-MS), including all essential amino acids, except for methionine. The majority of amino acids were significant positively correlated with each other and were significant negatively correlated with glucose, fructose and galactose. A total of 11 polyphenols were identified in these tree fresh peony flowers by LC-MS. There was a high consistency in grouping peony flowers by using sugars and organic acids and amino acids, which differed from that based on color components and polyphenols. Tree peony flowers are also rich in K, Ca, Mg and Fe. In together, peony flowers can be a good resource of health-promoting compounds.

Subject Areas

tree peony flowers; sugars and organic acids; amino acids; polyphenols; GC-MS; LC-MS

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