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The essential oils from the needles and branch of the Abies delaveyi subsp. fansipanensis was collected in Hoang Lien Natural Park, Lao Cai province and was obtained by steam distilation and the yields of essential oils were 0.27% and 0.08% from air-dry material. By the using GC/MS analysis, there are 44 and 52 constituents from needles and branch were identified and accounting 97.75% and 96.86% essential oil. | VNU Journal of Science Natural Sciences and Technology Vol. 37 No. 4 2021 88-93 Original Article Chemical Composition of Essential Oils from the Needles and Branch of the Abies delaveyi Franch subsp. fansipanensis Q. P. Xiang amp al Rushforth in Lao Cai Province Tran Huy Thai1 Nguyen Thi Hien1 Nguyen Hung Manh1 Dinh Thi Thu Thuy1 Nguyen Trung Thanh2 1 Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Cau Giay Hanoi Vietnam 2 VNU University of Science Hanoi 334 Nguyen Trai Thanh Xuan Hanoi Vietnam Received 12 July 2020 Revised 14 August 2021 Accepted 08 October June 2021 Abstract The essential oils from the needles and branch of the Abies delaveyi subsp. fansipanensis was collected in Hoang Lien Natural Park Lao Cai province and was obtained by steam distilation and the yields of essential oils were 0.27 and 0.08 from air-dry material. By the using GC MS analysis there are 44 and 52 constituents from needles and branch were identified and accounting 97.75 and 96.86 essential oil. The main constituents of needles essential oil were α-pinene 22.28 β-phellandrene 17.80 β-pinene 7.87 α-cadinol 6.53 myrcene 4.35 δ-cadinene 4.39 . The main constituents of branchs essential oil were β-phellandrene 18.0 α-pinene 10.95 myrcene 10.76 β-pinene 6.71 abienol 6.71 . α-cadinol 3.31 . This is the first study on the chemical constituents of the essential oils from the needles and branchs of Abies delaveyi subsp. fansipanensis in Vietnam. Keywords Essential oil Abies delavayi Franch subsp. fansipanensis Q. P. Xiang amp al Rushforth α-pinene β-phellandrene. D _ Corresponding author. E-mail address thaiiebr@yahoo.com.vn https doi.org 10.25073 2588-1140 vnunst.5101 88 T. H. Thai et al. VNU Journal of Science Natural Sciences and Technology Vol. 37 No. 4 2021 88-93 89 Thành phần hóa học của tinh dầu từ lá kim và cành phân loài Vân sam phan xi păng Abies delavayi Franch subsp. fansipanensis Q. P. Xiang amp al Rushforth ở Lào Cai Trần Huy Thái1 Nguyễn Thị Hiền1 Nguyễn Hùng .
