Article
Plant Sciences
Enrica Alicandri, Stefano Covino, Bartolomeo Sebastiani, Anna Rita Paolacci, Maurizio Badiani, Agostino Sorgona, Mario Ciaffi
Summary: In this study, a quantitative analysis of monoterpene composition was carried out in different tissues of Pinus nigra. Seven monoterpene synthase genes were isolated from the same plant tissues, and their expression profiles were found to be consistent with the corresponding metabolite profiles.
Article
Geosciences, Multidisciplinary
Lee Tiszenkel, Shan-Hu Lee
Summary: New particle formation (NPF) occurs in various locations, but not in forests dominated by isoprene. Recent laboratory studies show contradictory theories regarding the role of isoprene in biogenic NPF. To reconcile these discrepancies, flow tube experiments were conducted and it was found that isoprene can either suppress or enhance biogenic NPF depending on the carbon ratios and oxidation regimes, demonstrating the synergetic effects of isoprene and HOx on NPF.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Chemistry, Physical
Li Xu, Narcisse T. Tsona, Lin Du
Summary: This study reveals that high relative humidity enhances the contribution of SO2 to the formation of OSs, particularly HOOSs, during monoterpene ozonolysis in the atmosphere. The interaction between SO2 and ROOHs under high humidity conditions promotes the formation of HOOSs, leading to changes in SOA yield. Additionally, variations in particle acidity and liquid water content also impact SOA formation.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Engineering, Environmental
Kelvin H. Bates, James D. Cope, Tran B. Nguyen
Summary: This study investigates the gas-phase reactions of 1,2-Dihydroxy isoprene (1,2-DHI) with OH radicals and ozone, finding rapid reactions and major products like hydroxyacetone, glycolaldehyde, and 2,3-dihydroxy-2-methyl-propanal (DHMP). Formation of radical-terminating hydroperoxide and organonitrate from RO2 reactions are not observed in gas phase due to low volatility, leading to branching ratios being derived by mass balance. Incorporating results into a global chemical transport model shows significant contributions of 1,2-DHI oxidation to atmospheric budgets of various compounds.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Plant Sciences
Yan Wang, Qinsong Yang, Yifan Zhu, Lan Zhao, Pengju Ju, Guoyun Wang, Chaochao Zhou, Changqing Zhu, Huijuan Jia, Yun Jiao, Huimin Jia, Zhongshan Gao
Summary: This study identified candidate genes regulating the production of volatile organic compounds (VOCs) in red bayberry through transcriptome analysis. The gene MrTPS3 was found to regulate the synthesis of β-caryophyllene, while MrTPS20 was found to regulate the synthesis of α-pinene. A single amino acid substitution between different cultivars resulted in the loss of function of MrTPS3 and led to differences in β-caryophyllene production.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Jiyoon Yang, Won-Sil Choi, Ki-Joong Kim, Chang-Deuk Eom, Mi-Jin Park
Summary: This study demonstrated the anti-inflammatory activity of essential oil extracted from Korean pine wood and identified key anti-inflammatory constituents. These constituents showed potential for the management and treatment of inflammatory conditions, indicating possible development of novel anti-inflammatory drugs.
Article
Ecology
Arianna Peron, Lisa Kaser, Anne Charlott Fitzky, Martin Graus, Heidi Halbwirth, Jurgen Greiner, Georg Wohlfahrt, Boris Rewald, Hans Sanden, Thomas Karl
Summary: This study investigated changes in biogenic volatile organic compound emissions and physiological parameters in Quercus robur L. during drought and ozone stress. Results showed decreased isoprene emissions and increased monoterpene and sesquiterpene emissions during drought progression. Exposure to ozone led to faster stomatal closure, partially mitigating drought effects.
Article
Pharmacology & Pharmacy
Suramya Waidyanatha, Sherry R. Black, Kristine L. Witt, Timothy R. Fennell, Carol Swartz, Leslie Recio, Scott L. Watson, Purvi Patel, Reshan A. Fernando, Cynthia Rider
Summary: alpha-Pinene exposure through inhalation caused an increase in bladder hyperplasia and a decrease in sperm counts in rodents. It also formed a reactive metabolite called alpha-pinene oxide. By investigating the metabolism of alpha-pinene to alpha-pinene oxide and the mutagenicity of both substances, it was found that alpha-pinene oxide was formed in both rat and human cells with some species differences. Although the rat microsomes cleared alpha-pinene oxide faster than human microsomes, the clearance of alpha-pinene oxide in hepatocytes was similar between species. While alpha-pinene was not mutagenic, alpha-pinene oxide showed mutagenicity.
Article
Environmental Sciences
Ingvild Ryde, Cleo L. Davie-Martin, Tao Li, Mads P. Naursgaard, Riikka Rinnan
Summary: This study found that mosses and lichens emit large amounts of VOCs, and these emissions are species dependent.
ATMOSPHERIC ENVIRONMENT
(2022)
Article
Agronomy
Joanah Midzi, David W. W. Jeffery, Ute Baumann, Dimitra L. L. Capone, Suzy Y. Y. Rogiers, Vinay Pagay
Summary: This study investigated the two-way communication of volatile organic compounds (VOCs) between drought-stressed and non-stressed grapevine plants. The results showed higher levels of isoprene in the VOCs emitted by drought-stressed plants, while the concentration of α-pinene decreased in co-located plants. Gene expression analysis revealed the over-expression of the key gene AOS in the jasmonic acid (JA) biosynthesis pathway. These findings suggest that isoprene and α-pinene may serve as interplant signaling molecules during drought stress.
Article
Chemistry, Multidisciplinary
Remigius Chizzola, Felix Billiani, Stefan Singer, Johannes Novak
Summary: Pinus cembra, or stone pine, is an Alpine coniferous tree rich in aromatic compounds. The essential oils extracted from its twigs are commonly used in pharmacy, food industry, and cosmetics. Variabilities in compositions of essential oil and related hydrolates from individual trees in the Austrian high mountain range have been studied, with essential oils containing mainly monoterpene hydrocarbons and hydrolates dominated by oxidized compounds.
APPLIED SCIENCES-BASEL
(2021)
Article
Forestry
Sebastian Paczkowski, Pawan Datta, Heidrun Irion, Marta Paczkowska, Thilo Habert, Stefan Pelz, Dirk Jaeger
Summary: The project PROTECTFOREST focuses on enhancing early detection of bark beetles to enable prompt response to initial infestation, utilizing semiconductor gas sensor array tested in lab and on a drone under various conditions. Preliminary results from a real-life field trial show potential for the new sensor concept, with further research evaluating detection rate of infested trees.
Article
Plant Sciences
Foued Aloui, Mokhtar Baraket, Saber Jedidi, Karim Hosni, Rahma Bouchnak, Oumaima Salhi, Nouri Jdaidi, Houcine Selmi, Hanene Ghazghazi, Ayda Khadhri, Chaabane Abbes
Summary: The study examined the chemical composition and in vitro anti-radical and antibacterial properties of essential oils from needles of three pine species. The oils were rich in monoterpene hydrocarbons, showing strong radical scavenging and antimicrobial activities against both Gram+ and Gram- bacteria. These findings suggest that the oils could serve as a natural source of bioactive compounds with antioxidant and antimicrobial properties.
JOURNAL OF ESSENTIAL OIL BEARING PLANTS
(2021)
Article
Chemistry, Physical
Joanna Srenscek-Nazzal, Adrianna Kaminska, Piotr Miadlicki, Agnieszka Wroblewska, Karolina Kielbasa, Rafal Jan Wrobel, Jaroslaw Serafin, Beata Michalkiewicz
Summary: Activated carbons modified with HCl and HNO3 acids were used for the first time in the catalytic process of alpha-pinene isomerization, with DT0_HCl_HNO3-activated carbon showing the highest activity. 100% conversion of alpha-pinene was achieved at 160 degrees C and 5 wt% catalyst content over the DT0_HCl_HNO3 catalyst, with camphene and limonene as the main products.
Article
Environmental Sciences
J. M. A. de Kort, F. Gauvin, M. G. L. C. Loomans, H. J. H. Brouwers
Summary: Biobased insulation materials offer opportunities for vapor-open building constructions, but their interaction with the indoor environment raises concerns about indoor air quality and volatile organic compounds (VOCs). This study quantifies the VOC emissions from biobased materials and finds that temperature affects the type of compounds emitted. The results indicate that expanded cork and particle board emit no harmful substances, while EPS insulation exceeds healthy limits for benzene. The quantification method also affects the accuracy of emission rate estimation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
T. -V. Dinh, Y. -S. Son, I. -Y. Choi, K. -Y. Song, Y. Sunwoo, J. -C. Kim
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2019)
Article
Engineering, Environmental
Youn-Suk Son, Yong-Hwan Oh, In-Young Choi, Trieu-Vuong Dinh, Sang-Gwi Chung, Jai-hyo Lee, Duckshin Park, Jo-Chun Kim
JOURNAL OF HAZARDOUS MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Hubdar Ali Maitlo, Jechan Lee, Joo Yang Park, Jo-Chun Kim, Ki-Hyun Kim, Jung Hwan Kim
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2019)
Article
Environmental Sciences
Hubdar Ali Maitlo, Ki-Hyun Kim, Azmatullah Khan, Jan E. Szulejko, Jo Chun Kim, Hee Nam Song, Wha-Seung Ahn
ENVIRONMENTAL RESEARCH
(2019)
Article
Environmental Sciences
Dong-June Kim, Trieu-Vuong Dinh, Joo-Yeon Lee, In-Young Choi, Dong-Jin Son, In-Young Kim, Young Sunwoo, Jo-Chun Kim
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2019)
Article
Chemistry, Multidisciplinary
Joo-Yeon Lee, Trieu-Vuong Dinh, Dong-June Kim, In-Young Choi, Ji-Won Ahn, Shin-Young Park, Yoo-Jin Jung, Jo-Chun Kim
APPLIED SCIENCES-BASEL
(2019)
Article
Environmental Sciences
Youn-Suk Son, Junghwan Kim, In-Young Choi, Jo-Chun Kim
Summary: In this study, the decomposition characteristics of n-hexane by DBD plasma were investigated, showing different decomposition efficiencies under different atmospheres. The removal efficiency of n-hexane was found to increase with increasing residence time, relative humidity, and power, and decreasing initial concentration. Additionally, as the specific energy density increased, the concentrations of CO, CO2, and aerosol increased, while O3 levels initially increased but then decreased.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Environmental Sciences
Yoon-Seo Lee, Hubdar Ali Maitlo, Ki-Hyun Kim, Eilhann E. Kwon, Min-Hee Lee, Jo-Chun Kim, Hee-Nam Song, Jan E. Szulejko
ENVIRONMENTAL RESEARCH
(2019)
Article
Meteorology & Atmospheric Sciences
So-Young Kim, Jo-Chun Kim, Chan-Ryul Park, Youn-Suk Son
ATMOSPHERIC RESEARCH
(2020)
Article
Chemistry, Analytical
Trieu-Vuong Dinh, Dong-June Kim, Ji-Won Ahn, In-Young Choi, Joo-Yeon Lee, Youn-Suk Son, Jo-Chun Kim
ANALYTICAL CHEMISTRY
(2020)
Article
Environmental Sciences
Trieu-Vuong Dinh, Joo-Yeon Lee, Ji-Won Ahn, Jo-Chun Kim
Review
Environmental Sciences
Trieu-Vuong Dinh, Jo-Chun Kim
Summary: CEMS is a tool used to analyze air pollutants concentrations from stationary sources, and the importance of moisture removal in CEMS is highlighted. The study critically reviews condensation, permeation, and dilution methods used to remove moisture, discussing their efficiency, advantages, and disadvantages, demonstrating the feasibility and practicality of different methods in handling moisture in CEMS.
Article
Environmental Sciences
Trieu-Vuong Dinh, In-Young Choi, Byeong-Gyu Park, Jee-Hyun Lee, In-Young Kim, Han-Nui Gil, Sang-Woo Lee, Jo-Chun Kim
Summary: A new NH3 analyzer based on NDIR technique has been developed to measure emissions from combustion processes effectively and cost-efficiently. By using a least-interfering BPF, interference and zero-drift issues have been successfully overcome, leading to measurement errors less than 2.5% and a 19% reduction in zero-drift for accurate and reproducible NH3 measurements.
Article
Environmental Sciences
Dong-June Kim, Trieu-Vuong Dinh, Joo-Yeon Lee, Dong-Jin Son, Jo-Chun Kim
ASIAN JOURNAL OF ATMOSPHERIC ENVIRONMENT
(2020)
Article
Environmental Sciences
Joo-Yeon Lee, Trieu-Vuong Dinh, Dong-June Kim, In-Young Choi, Ji-Won Ahn, Shin-Young Park, Yoo-Jin Jung, Jo-Chun Kim
ASIAN JOURNAL OF ATMOSPHERIC ENVIRONMENT
(2019)