Compositional Comparison of Essential Oils Extracted from Flowers and Aerial Parts of Elsholtzia winitiana var. dongvanensis Phuong Harvested in Ha Giang Province, Vietnam

Pham Thi Ngoc Mai1,2,3, Nguyen Thi Hong Van1,2, Chu Quang Truyen1,2, Tran Dinh Thang4, Tran Quoc Toan1,2, Pham Quoc Long1,2, Cam Thi Inh1,2,*, Dao Tan Phat4,5, Tran Thien Hien5,6 and Tran Thi Kim Ngan4,5,*

1Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam

2Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam

3Thai Nguyen University of Agriculture and Forestry, Thai Nguyen, Vietnam

4School of Chemistry, Biology and Enviroment, Vinh University, Vinh City, Vietnam

5NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam

6Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam

*Corresponding authors: E-mail: camthiinh@gmail.com; ttkngan@ntt.edu.vn

Abstract

Elsholtzia winitiana var. dongvanensis Phuong is a plant contains an essential oil characterized by an important chemical transformation. Essential oils were isolated from Elsholtzia winitiana var. dongvanensis Phuong flowers and aerial parts by hydrodistillation and analyzed for chemical constituents by GC-MS. Twenty-two components accounting for 99.99% of the total oil of flowers and twenty-three components accounting for 98.72 % of the total oil of aerial parts were identified. The composition of the essential oil contains aldehyde, aromatic ketone, monoterpenoid and secquiterpenoid. Major components found in two essential oil samples were andehyde, terpenoid, ketone benzaldehyde, germacrene D, E-caryphyllene and caryophyllene oxide. Moreover, essential oil sample isolated from flowers and aerial parts of E. winitiana var. dongvannensis was dominated by the high content of rosefuran (75.67%) and rosefuran epoxide (71.33%), respectively.

Keywords

Elsholtzia winitiana, Essential oils, Hydrodistillation, GC-MS, Rosefuran, Rosefuran epoxide.

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