Deeper Insight into the Volatile Profile of Rosa willmottiae with Headspace Solid-Phase Microextraction and GC-MS Analysis was written by Jiao, Ruifang;Gao, Ping;Gao, Xinfen. And the article was included in Molecules in 2022.Reference of 105-87-3 This article mentions the following:
As the distribution center of Rosa in the world, China has abundant wild germplasm resources, which can contribute to the breeding of modern roses. To explore the potential value of wild roses distributed in the Sichuan-Tibet region, solid phase microextraction (SPME) and gas chromatog.-mass spectrometry (GC-MS) were used to determine the volatile organic compounds (VOCs) in Rosa willmottiae flowers at three flowering stages (bud stage, initial flowering stage, full flowering stage). Meanwhile, we compared the VOCs of R. willmottiae with different phenotypes (double flowers and single flowers). A total of 74 volatile compounds were identified. The results show that the essential substances belong to alcs. and terpenoids. The main volatile organic compounds are 2-Ph ethanol (20.49%), benzyl alc. (10.69%), 尾-maaliene (8.66%), geranyl acetate (8.47%), and (+)-伪-long pinene (6.127%). Different flowering stages had great influence on the volatile profile, from the bud stage to full flowering stage; the content of terpenoids released decreased by 6.17%, whereas alcs. and esters increased by 8.58% and 11.56%, resp. The chem. diversity and the content of the main components with a different phenotype were not significantly different. Our result will provide a theor. basis for the development and utilization of Rosa willmottiae in Sichuan and Tibet. In the experiment, the researchers used many compounds, for example, (E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3Reference of 105-87-3).
(E)-3,7-Dimethylocta-2,6-dien-1-yl acetate (cas: 105-87-3) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Reference of 105-87-3
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics