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Open AccessArticle

Comparative Chemical Profiles of Essential Oils and Hydrolate Extracts from Fresh Flowers of Eight Paeonia suffruticosa Andr. Cultivars from Central China

1
Department of Pharmaceutical Sciences, Medical College, Henan University of Science and Technology, Luoyang 471023, China
2
National Flower Garden Administration of Luoyang, Luoyang 471022, China
3
Department of Scientific Research, Peony Institute of Luoyang, Luoyang 471022, China
*
Author to whom correspondence should be addressed.
Molecules 2018, 23(12), 3268; https://doi.org/10.3390/molecules23123268
Received: 4 November 2018 / Revised: 1 December 2018 / Accepted: 7 December 2018 / Published: 10 December 2018
(This article belongs to the Collection Recent Advances in Flavors and Fragrances)
Paeonia suffruticosa Andr. is a famous ornamental and aromatic plant with hundreds of cultivars in China. The objective of this work was to investigate comparative chemical profiles of essential oils and hydrolate extracts from eight P. suffruticosa Andr. cultivars from Central China. The percentages of hydrocarbons in hydrolate extracts (≤1.1%) were significantly lower than those in the essential oils (29.8–63.7%). The percentages of oxygenated compounds in hydrolate extracts (98.3–99.8%) were significantly higher than those in the essential oils (34.8–69.6%). Multivariate analyses with hierarchical clusters and principal components further indicated the chemical differences between essential oils and hydrolate extracts. Due to predominance of oxygenated compounds and almost trace level of hydrocarbons, P. suffruticosa Andr. hydrolate extracts could be good alternatives to the essential oils. Moreover, distribution of major oxygenated compounds in hydrolate extracts varied with cultivars. Hydrolate extracts from ’SHT’, ’WLPS’ and ’BXT’ presented chemotypes of methylated phenols (65.0%), 2-phenylethanol (64.4%) and geraniol + citronellol + nerol (59.9%), respectively. Those from five other cultivars presented somewhat mixed chemotypes. These results were further confirmed by quantitative evaluation relative to the major oxygenated compounds. The outcome of this work will promote applications of P. suffruticosa Andr. hydrolate extracts in fragrances and cosmetics. View Full-Text
Keywords: Paeonia suffruticosa Andr.; essential oil; hydrolate extract; chemical profile; GC-MS; GC-FID Paeonia suffruticosa Andr.; essential oil; hydrolate extract; chemical profile; GC-MS; GC-FID
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MDPI and ACS Style

Lei, G.; Li, J.; Zheng, T.; Yao, J.; Chen, J.; Duan, L. Comparative Chemical Profiles of Essential Oils and Hydrolate Extracts from Fresh Flowers of Eight Paeonia suffruticosa Andr. Cultivars from Central China. Molecules 2018, 23, 3268.

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