Article
Agronomy
Ioanna Dasenaki, Petri-Christina Betsi, Dimitris Raptopoulos, Maria Konstantopoulou
Summary: This study demonstrated the larvicidal effect of Pistacia lentiscus fruit extract and its metabolites on Lobesia botrana larvae, with the main contributor to bioactivity being identified as the major fraction PLFHe2, consisting of triglycerides and oleic and linoleic acid as the toxic components.
Article
Plant Sciences
Imane Tagnaout, Hannou Zerkani, Nadia Hadi, Bouchra El Moumen, Fadoua El Makhoukhi, Mohamed Bouhrim, Rashad Al-Salahi, Fahd A. Nasr, Hamza Mechchate, Touriya Zair
Summary: This study investigated the essential oil chemical composition, antioxidant and antibacterial activities of Thymus capitatus and Thymus broussonnetii. The results showed that the essential oils of both thyme species were rich in oxygenated monoterpenes and exhibited strong antioxidant and antibacterial activities, making them suitable as natural antioxidants and antibacterial additives for food protection.
Article
Biology
Hakim Alilou, Mohamed Akssira
Summary: This study investigated the antimicrobial, insecticidal, and antioxidant activities of Thapsia transtagana essential oils, finding strong efficacy against bacteria like Staphylococcus aureus and pests like Acanthoscelides obtectus and Sitophilus oryzae. The essential oils also showed potent radical scavenging abilities, making them suitable for use as natural preservatives in the pharmaceutical and cosmetic industries.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2021)
Article
Infectious Diseases
Imane Tagnaout, Hannou Zerkani, Noureddine Bencheikh, Smail Amalich, Mohamed Bouhrim, Ramzi A. Mothana, Mohammed R. Alhuzani, Rachid Bouharroud, Christophe Hano, Touriya Zair
Summary: The chemical composition of Origanum elongatum EO was analyzed, and its antioxidant, antibacterial, and insecticidal activities were evaluated. The main component of the EO was carvacrol (57.32%). The EO exhibited significant antiradical and reducing power, as well as considerable antibacterial activity against various pathogenic bacteria. It also demonstrated high efficacy as a fumigant insecticide. Therefore, O. elongatum EO could be used as a natural antioxidant, antibiotic, and biopesticide.
Article
Food Science & Technology
Naduvilthara U. Visakh, Berin Pathrose, Mani Chellappan, M. T. Ranjith, P. V. Sindhu, Deepu Mathew
Summary: Essential oil extracted from citrus peel waste has insecticidal, antioxidant, and phytotoxic activities. D-limonene is the major constituent of citrus peel waste essential oil. It shows significant activities against two key stored grain pests, Tribolium castaneum and Calloso-bruchus chinensis.
Article
Biochemistry & Molecular Biology
C. S. Jayaram, Nandita Chauhan, Shudh Kirti Dolma, S. G. Eswara Reddy
Summary: Peppermint oil showed the highest toxicity against the pulse beetle and can be recommended for its control.
Article
Plant Sciences
Khaoula Diass, Mohammed Merzouki, Kaoutar Elfazazi, Hanane Azzouzi, Allal Challioui, Khalil Azzaoui, Belkheir Hammouti, Rachid Touzani, Flore Depeint, Alicia Ayerdi Gotor, Larbi Rhazi
Summary: The purpose of this study was to determine the chemical composition of Lavandula officinalis essential oil and evaluate its antibacterial effects against seven pathogenic bacteria strains. The results showed that E. coli and S.newport were sensitive to the essential oil, and four strains were remarkably sensitive with MIC values of 88.7 μg/mL and 177.5 μg/mL. Molecular docking analysis indicated that eucalyptol and linalyl acetate efficiently bind with the active site of the target protein, showing higher activity than the positive control gentamicin.
Article
Biochemistry & Molecular Biology
Arunaksharan Narayanankutty, Aswathi Moothakoottil Kuttithodi, Ahmed Alfarhan, Rajakrishnan Rajagopal, Damia Barcelo
Summary: The study found that Allspice essential oil has larvicidal and repellent effects on common pests of stored products, while also being safe for non-target organisms.
Article
Plant Sciences
Caixia Han, Shixing Zhou, Yu Mei, Qiumei Cao, Kai Shi, Hua Shao
Summary: This study evaluated the chemical composition and phytotoxic, insecticidal, and antimicrobial activities of Ajania tibetica essential oil. The essential oil showed strong phytotoxicity against Poa annua and Medicago sativa, as well as significant pesticidal activity against Aphis gossypii. It also exhibited antimicrobial activity against various bacterial and fungal strains. This research provides valuable information on the potential use of Ajania tibetica essential oil as an alternative synthetic pesticide.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Yan Li, Shutian Liu, Chen Zhao, Zhuo Zhang, Dechao Nie, Weixuan Tang, Yanling Li
Summary: This study investigated the antibacterial and antioxidant activities of five citrus essential oils and found that they exhibited selective antibacterial and antioxidant effects. The main active component of these oils, d-limonene, may not solely contribute to their activities.
Article
Pharmacology & Pharmacy
Chi-Ya Huang, Yu-Yi Chang, Shang-Tzen Chang, Hui-Ting Chang
Summary: Pistacia chinensis leaf essential oil and its main component limonene have the potential to inhibit xanthine oxidase activity and may be used as natural remedies for the treatment of gout.
Article
Biochemistry & Molecular Biology
Ann Chie Lim, Shirley Gee Hoon Tang, Noraziah Mohamad Zin, Abdul Mutalib Maisarah, Indang Ariati Ariffin, Pin Jern Ker, Teuku Meurah Indra Mahlia
Summary: This study characterized the chemical profile and biological properties of lemon myrtle oil. The results showed that lemon myrtle oil exhibited strong antioxidant, antibacterial, and antibiofilm activities, indicating its potential as a natural antioxidant agent, antibacterial agent, and antibiofilm agent for pharmaceutical and food industries.
Article
Biochemistry & Molecular Biology
Maha Al-Zaben, Mayasar Al Zaban, Souheila Naghmouchi, Albandary Nasser Alsaloom, Nada Al-Sugiran, Ahlam Alrokban
Summary: This in vitro study aimed to investigate the antimicrobial activity of methanolic and aqueous extracts of different organs (stems, roots, and leaves) of Pistacia lentiscus against various bacterial species, fungal strains, and yeast. The study also compared the yield, composition, and polyphenol content of the different extracts. The results showed that methanolic extracts had higher yields and greater polyphenol content compared to aqueous extracts. Additionally, the methanolic extracts exhibited stronger antimicrobial activity against all tested strains, including bacteria, fungi, and yeast.
Article
Biochemistry & Molecular Biology
Fan Su, Gan Yang, Datong Hu, Chen Ruan, Jing Wang, Yingying Zhang, Qingjun Zhu
Summary: This study analyzed the chemical composition of Centipeda minima essential oil (EOCM) using GC-MS, and found that the main constituents were trans-chrysanthenyl acetate, thymol, aromadendrene, and beta-caryophyllene. The antibacterial screening revealed that thymol and carvacrol, two monomers in EOCM, exhibited antibacterial activity against S. aureus. The minimum inhibitory concentrations (MIC) of EOCM, thymol, and carvacrol were 0.625 mg/mL, 0.156 mg/mL, and 0.156 mg/mL, respectively. The experimental results demonstrated that these three drugs could inhibit the growth of S. aureus and the formation of biofilm by altering the permeability of cell membrane and interfering with bacterial metabolic activities. The scavenging effects on DPPH radical and hydroxyl radical indicated that the antioxidant effect of the three drugs was EOCM > carvacrol > thymol.
Article
Biochemistry & Molecular Biology
Qiang Wei, Yi-Han Zhang
Summary: The volatile oils of the leaf and stem of Farfugium japonicum (L.) Kitamura were obtained by supercritical fluid extraction (SFE)-CO2, which showed significant differences in composition. The main constituents in the leaf oil were alcohols, hydrocarbons, terpenoids, benzenes, and fatty acids, while the stem oil contained mainly benzenes, ketones, terpenoids, fatty acids, phenolics, steroids, hydrocarbons, and esters. The stem oil exhibited high antioxidant and antibacterial activities, attributed to the SFE-CO2 extraction and the high accumulation of benzenes, terpenoids, and phenolics in the stem.
Article
Energy & Fuels
Amirreza Attarzadeh, Mehmet Balcilar
Summary: This study examines the volatility spillover among the oil, renewable energy, common stock, and technology markets using the time-domain spillover index approach. The findings reveal bidirectional volatility spillover between the oil and clean energy markets. Moreover, the study highlights the stronger volatility spillover during extreme shock periods.
Article
Environmental Sciences
Amirreza Attarzadeh, Mehmet Balcilar
Summary: This study empirically examines the connection between clean energy, Bitcoin, the stock market, and crude oil. The findings show that clean energy and traditional stock markets transmit shocks to Bitcoin and oil in terms of return, while receiving shocks in terms of volatility from them. During crisis periods, such as the cryptocurrency crash in 2018 and the COVID-19 pandemic in 2020, the connection between Bitcoin and other financial markets strengthens significantly.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Economics
Luis A. Gil-Alana, Sakiru Adebola Solarin, Mehmet Balcilar, Rangan Gupta
Summary: This study examines the degree of persistence of real gross domestic product per capita, total factor productivity, and labor productivity in a group of developed and developing nations, as well as the Euro Area. The findings suggest mean reversion in total factor productivity and real GDP per capita in Chile, Germany, the Netherlands, and New Zealand. However, mean reversion is only observed in labor productivity in Australia. Non-linearity is also present in the majority of the series.
EMPIRICAL ECONOMICS
(2023)
Article
Development Studies
Mehmet Balcilar, Ojonugwa Usman, George N. Ike
Summary: This study explores the impact of green energy consumption and investment on economic growth using empirical models and tools. The results indicate that green energy consumption and investment have positive effects on economic growth, but the effects are heterogeneous and stronger in lower quantiles of economic growth. However, the utilization of green energy consumption and investment needs to be improved to achieve the goals of mitigating greenhouse effects and promoting sustainable development.
SUSTAINABLE DEVELOPMENT
(2023)
Article
Business, Finance
Mehmet Balcilar, Ahmed H. Elsayed, Shawkat Hammoudeh
Summary: This study investigates the financial connectedness and risk transmission among MENA economies through a comprehensive analysis that includes short and long-term financial connectedness, dependency under extreme market conditions, and network graph analysis. The empirical results reveal a positive and strong association between financial stress co-movements and spillovers in these MENA countries, particularly during the long run and high extreme stress periods. It is also found that the five Gulf countries exhibit stronger financial connectedness among themselves compared to other countries. Saudi Arabia stands out as the main transmitter of financial stress and risk to other MENA economies, while North African countries tend to be mild receivers of risk. Additionally, the more open economies in terms of capital controls, such as Kuwait, Oman, Qatar, and the UAE, play a more central role in financial connectedness and risk spillovers.
JOURNAL OF INTERNATIONAL FINANCIAL MARKETS INSTITUTIONS & MONEY
(2023)
Review
Agriculture, Multidisciplinary
Salih Karaborklu, Abdurrahman Ayvaz
Summary: Aromatic plants have diverse applications and contain volatile essential oils that can be used as alternatives for pest control. This review paper discusses the most effective essential oil components for fumigant, contact, and ingestion-based pest control, as well as their repellent and feeding deterrent activities. Additionally, it highlights the components that inhibit the development and reproduction of storage pests, reducing their productivity and lifespan.
JOURNAL OF PLANT DISEASES AND PROTECTION
(2023)
Article
Green & Sustainable Science & Technology
Mehmet Balcilar, Gizem Uzuner, Chinazaekpere Nwani, Festus Victor Bekun
Summary: This study investigates the role of public-private partnerships (PPP) in energy investment in Turkey, which is currently striving for sustainable development. The findings show a positive relationship between PPP investment in energy, foreign direct investment (FDI), economic growth, and energy intensity. The study suggests efficient investment in clean energy and the involvement of PPP for sustainable economic growth.
Article
Economics
Mehmet Balcilar, Gizem Uzuner, Festus Victor Bekun, Mark E. Wohar
Summary: This study offers a new perspective on the dynamic causal relationship between housing price uncertainty and housing prices in the UK. It investigates the time-varying effect of housing market uncertainty on housing prices between 1998:Q1 and 2019:Q2. The study uses a news-based housing price uncertainty index and finds that housing market uncertainty has predictive power for housing prices in the UK, beyond economic policy uncertainty.
Article
Green & Sustainable Science & Technology
Busra Agan, Mehmet Balcilar
Summary: The paper investigates the role of climate change adaptation and green technology diffusion in driving green growth, as well as the influence of economic, environmental, and social factors. Using a panel dataset of 38 OECD member countries from 1990 to 2020, dynamic panel data models are estimated. The results provide strong evidence that green technology diffusion and climate change adaptation have a significant positive impact on green growth. The findings also highlight the importance of macroeconomic, institutional, social, and government policy-related factors in promoting green growth.
Article
Green & Sustainable Science & Technology
Mehmet Balcilar, Daberechi Chikezie Ekwueme, Hakki Ciftci
Summary: This study examines the impact of natural resource extraction, population, affluence, and trade openness on carbon dioxide (CO2) emissions and energy consumption in 17 sub-Saharan African (SSA) countries from 1971 to 2019, using the stochastic impacts on population, affluence, and technology (STIRPAT) model. It finds that natural resource extraction, population, and income have a significant positive impact on energy consumption and CO2 emissions, while trade openness has a negative effect. The study recommends policymakers to enforce ecofriendly regulations, promote green technologies and energy-saving sources, and reduce tariffs on ecofriendly commodities for sustainable development.
Article
Mathematics
Mehmet Balcilar, David Gabauer, Rangan Gupta, Christian Pierdzioch
Summary: In this study, we examine whether climate risks can predict stock market returns in the rapidly growing climate-finance literature. We measure climate risks using temperature anomalies and their volatility in the northern hemisphere and global context. Our analysis covers eight advanced countries from 1916 to 2021, controlling for cross-market spillovers and other risks. We find that climate risks do not systematically predict stock market returns, but they have short-term predictive value for the connectedness of stock market returns and historical predictive power in UK data.
Article
Environmental Studies
Mehmet Balcilar, Ojonugwa Usman, George N. Ike
Summary: The study examines the interaction effects of multinational corporations' operational behaviors and natural resource rents on environmental sustainability in African countries. The results indicate that natural resource rents play a significant role in moderating the impact of multinational corporations' behaviors on environmental sustainability.
Article
Operations Research & Management Science
Sera Sanli, Mehmet Balcilar, Mehmet Ozmen
Summary: Nonparametric regression is a popular method that offers flexibility in data modeling without requiring precise functional forms. This paper aims to predict the volatility of Bitcoin returns using a kernel regression approach based on EWMA and compare the results with various volatility predictors. The study finds that aggregated EWMA and HN GARCH(1,1) predictors outperform the standard GARCH(1,1) predictor when handling GARCH and EWMA predictors jointly. Additionally, GARCH(1,1) volatility as the kernel predictor outperforms the standard GARCH(1,1) predictor for a prediction horizon of 1 day.
ANNALS OF OPERATIONS RESEARCH
(2023)
Article
Business, Finance
Mehmet Balcilar, Huseyin Ozdemir
Summary: This article examines the asymmetric volatility spillover effects between Bitcoin and alternative coin markets. A frequency connectedness approach is applied to the daily data of 11 major cryptocurrencies. The study uncovers the presence of the fear of missing out psychological effect and pump-and-dump schemes in the crypto markets. The empirical findings confirm the existence of these effects in all cryptocurrencies except for USDT.
JOURNAL OF RISK AND FINANCIAL MANAGEMENT
(2023)
Article
Business, Finance
Muhammad Shahbaz, Mehmet Balcilar, Mantu Kumar Mahalik, Seyi Saint Akadiri
Summary: This paper examines the dynamic causal relationship between globalization and energy consumption using rolling and recursive rolling Granger causality methods. The empirical results show that the relationship between globalization and energy consumption is time-varying, with bidirectional causality found in many sub-samples. The findings indicate that globalization has a significant impact on energy consumption, with implications for trade and environmental quality.
INTERNATIONAL JOURNAL OF FINANCE & ECONOMICS
(2023)
