Analysis of the Volatile Components in Flowers of &amp;lt;i&amp;gt;Paeonia lactiflora&amp;lt;/i&amp;gt; Pall. and &amp;lt;i&amp;gt;Paeonia lactiflora&amp;lt;/i&amp;gt; Pall. var. &amp;lt;i&amp;gt;Trichocarpa&amp;lt;/i&amp;gt;

Tonglin Wang,Xia Sun,Xue Li,Anqi Xie,Dongliang Zhang,Yang Li,Zemiao Liu

doi:10.4236/ajps.2021.121009

Abstract

Paeonia lactiflora Pall. var. trichocarpa is a variety of Paeonia lactiflora Pall., and is currently the peony herb’s principal cultivar group. Here, we study the differences in aromatic components and flowers of different varieties between two groups of cultivars, providing a reference for applying natural fragrance substances of peonies, breeding fragrant flower types, and developing and using improved varieties. Headspace solid-phase microextraction (HS-SPME), gas chromatography-mass spectrometry (GC-MS), peak area normalization for each component relative to content, component library (NIST14/NIST14S) retrieval, and a literature review were used to analyze the volatile compounds in flowers of eight peony varieties, such as “Gaoganhong”, and ten comospore peony varieties, such as “Jinshanhong”. Results showed that the main volatile compound constituents in flowers of the two groups were terpenes and alcohols. Additionally, the content of eucalyptol, caryophyllene, α-Pinene, citronellol, and 3-Hexen-1-ol, acetate, (Z) was high. Peony cultivars contained linalool, (1R)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene, and 1,4-dimethoxybenzene, while comospore peony varieties contained 1,3,6-octatriene, 3,7-dimethyl-, (Z)-, phenylethyl alcohol, and geraniol. In this study, the differences between the volatile components of flowers of different peony varieties were clarified, laying a foundation for further molecular biology research into the floral fragrance of peonies and the cultivation of new varieties of aromatic peonies. At the same time, it also provides a theoretical basis for the development and application of peony flower by-products.

Highlights

Paeonia lactiflora Pall. is a perennial flowering herb with a characteristic white, bony, serrated leaf margin
Headspace solid-phase microextraction (HS-SPME), gas chromatography-mass spectrometry (GC-MS), peak area normalization for each component relative to content, component library (NIST14/NIST14S) retrieval, and a literature review were used to analyze the volatile compounds in flowers of eight peony varieties, such as “Gaoganhong”, and ten comospore peony varieties, such as “Jinshanhong”
Paeonia lactiflora Pall. var. trichocarpa is a variation of P. lactiflora with densely villous carpels, differing from P. lactiflora, which has smooth glabrous carpels

Summary

Introduction

Paeonia lactiflora Pall. is a perennial flowering herb with a characteristic white, bony, serrated leaf margin. Trichocarpa is a variation of P. lactiflora with densely villous carpels, differing from P. lactiflora, which has smooth glabrous carpels It is currently the main peony variety of the two major groups in production [1] [2] [3] [4]. Peony flowers contain anthocyanins and natural flavonoids, which are beneficial to the human body. They can nourish the blood, soften the liver, dispel stasis, promote metabolism, improve immunity, delay skin aging, and contain natural antioxidants [5] [6] [7]. The development of peony flower by-products in food, medicine, beauty, and health care is important. Our findings should help enhance peony flower value and set a direction for future peony breeding research and production

Methods

Results

Conclusion