Effects of Supplemental Light Spectra on the Composition, Production and Antimicrobial Activity of <i>Ocimum basilicum</i> L. Essential Oil
Ha Thi Thu Chu,
Thi Nghiem Vu,
Thuy Thi Thu Dinh,
Phat Tien Do,
Ha Hoang Chu,
Tran Quoc Tien,
Quang Cong Tong,
Manh Hieu Nguyen,
Quyen Thi Ha,
William N. Setzer
Affiliations
Ha Thi Thu Chu
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Ha Noi 10072, Vietnam
Thi Nghiem Vu
Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Ha Noi 10072, Vietnam
Thuy Thi Thu Dinh
Institute of Natural Product Chemistry, VAST, 18 Hoang Quoc Viet, Ha Noi 10072, Vietnam
Phat Tien Do
Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Ha Noi 10072, Vietnam
Ha Hoang Chu
Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Ha Noi 10072, Vietnam
Tran Quoc Tien
Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Ha Noi 10072, Vietnam
Quang Cong Tong
Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Ha Noi 10072, Vietnam
Manh Hieu Nguyen
Institute of Materials Science, VAST, 18 Hoang Quoc Viet, Ha Noi 10072, Vietnam
Quyen Thi Ha
Faculty of Agricultural Technology, VNU University of Engineering and Technology, Vietnam National University Hanoi, 144 Xuan Thuy, Ha Noi 10053, Vietnam <email>[email protected]</email>
William N. Setzer
Aromatic Plant Research Center, 230 N 1200 E, Suite 100, Lehi, UT 84043, USA
This study was performed to investigate the effects of different supplemental light spectra and doses (duration and illuminance) on the essential oil of basil (Ocimum basilicum L.) cultivated in the net-house in Vietnam during four months. Ten samples of basil aerial parts were hydrodistilled to obtain essential oils which had the average yields from 0.88 to 1.30% (v/w, dry). The oils analyzed using GC-FID and GC-MS showed that the main component was methyl chavicol (87.4–90.6%) with the highest values found in the oils of basil under lighting conditions of 6 h/day and 150–200 µmol·m−2·s−1. Additional lighting conditions caused the significant differences (p −2·s−1 in 6 h/day and (2) 43.5% Red: 43.5% Blue: 8.0% Green: 5.0% Far-Red at 100 μmol·m−2·s−1 in 6 h/day. The oils of basil in some formulas showed weak inhibitory effects on only the Bacillus subtilis strain. Different light spectra affect the biomass and essential oil production of basil, as well as the concentrations of the major components in the oil.
