Article
Chemistry, Physical
Mihaly Purgel, Jan Heinrich Schuur
Summary: This article presents a methodology for analyzing and determining acid dissociation pK(a) values using plane wave functions and density functional theory. By scanning cell size-dependent pK values, certain patterns were identified and strategies were developed for predicting pK values of other compounds.
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2023)
Article
Chemistry, Analytical
Y. Dogan Daldal, Ebru Cubuk Demiralay
Summary: In this study, the pK(a) values of pemetrexed and raltitrexed were determined by RPLC and UV-visible spectrophotometric methods. The aqueous pK(a) values were calculated using macroscopic parameters, and the degree of ionization was also calculated.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2022)
Article
Chemistry, Analytical
George Schenck, Krzysztof Baj, Jonathan A. Iggo, Matthew Wallace
Summary: pK(a) is an important property of a molecule that has significant applications in drug design, catalysis, reactivity, and environmental toxicity. Existing NMR methods for measuring pK(a) in water are well established, but measuring pK(a) in organic solvents is laborious and problematic. This paper presents an efficient one-shot method to determine the pK(a) of a molecule in an organic solvent by establishing a pH gradient in the NMR tube.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Jiaojuan Teng, Junjie Pang, Yonghong Sun, Jianguo Wang
Summary: In this study, a method to determine the conjugate acid-base dissociation constants of weak acids and bases in aprotic solvents was found. By measuring the new peak potentials, which were independent of the concentration of hydroquinone and quinone, the dissociation constants can be accurately obtained.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Applied
Omer Isildak, Ilyas Yildiz, Nusret Genc
Summary: In this study, a new type of solid-state-contact potentiometric PVC membrane sensor was developed for the evaluation of 1,1-diphenyl-1-picrylhydrazil (DPPH) radical scavenging activity. The sensor demonstrated simple, fast, stable, and low-cost characteristics, and could measure at low volumes. The results obtained were in accordance with the spectroscopic method.
Article
Agriculture, Multidisciplinary
Boris Nemzer, Nebiyu Abshiru, Fadwa Al-Taher
Summary: The study investigated the phytochemical contents of Arabica whole coffee cherry and its extracts, identifying a large number of compounds present naturally in the whole coffee cherry. Both extracts retained phenolic and other potentially bioactive compounds, indicating their potential health benefits.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Plant Sciences
Carolina P. Reyes, Samuel Rodriguez Sabina, Rocio Lopez-Cabeza, Cristina G. Montelongo, Cristina Gimenez, Ignacio A. Jimenez, Raimundo Cabrera, Isabel L. Bazzochi
Summary: Phytopathogens cause significant losses in agriculture. This study evaluated sixteen plant species from the Canary Islands against three phytopathogenic fungi and identified five potential candidates for biofungicide development.
Review
Agriculture, Dairy & Animal Science
Yongmei Guo, Li Li, Sumei Yan, Binlin Shi
Summary: Climate change and heat stress present significant challenges for the dairy industry, but plant extracts can play an important role in alleviating heat stress in dairy cows.
Article
Spectroscopy
Faysal Selimoglu, Nazangul Unal, Zehra Ceren Ertekin, Erdal Dinc
Summary: A new UV spectroscopic method using PARAFAC and MCR-ALS was developed in this study for the rapid determination of pKa values of benzoic acid and its derivatives without the need for traditional titration. These methods provide a simple and fast way to determine the pKa values of relevant compounds.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Plant Sciences
Hesham R. El-Seedi, Shaden A. M. Khalifa, Azza H. Mohamed, Nermeen Yosri, Chao Zhao, Nabil El-Wakeil, Nour F. Attia, Baojun Xu, AbdElhafez R. AbdElhafez, Mohammad H. Boskabady, Sherif Elseedy, Thomas Efferth, Rob Verpoorte
Summary: Schistosomiasis is a water-borne disease caused by blood flukes, mainly affecting people in low-income regions. Plants have potential as alternative molluscicides and medicines to treat the disease, while also providing income for farmers.
PHYTOCHEMISTRY REVIEWS
(2022)
Review
Biochemistry & Molecular Biology
Parisa Bolouri, Robab Salami, Shaghayegh Kouhi, Masoumeh Kordi, Behnam Asgari Lajayer, Javad Hadian, Tess Astatkie
Summary: Essential oils and plant extracts are valuable sources of chemical compounds with applications in medicine, food, cosmetics, and agriculture. Extracting essential oils is an important step in their preparation, and modern methods are efficient in developing these compounds. The compounds extracted from plants have natural antimicrobial activity and are used in cosmetics and hygiene products. Additionally, they can be used as ingredients in plant antipathogens, biopesticides, and bioherbicides in the agricultural industry.
Article
Food Science & Technology
Camila S. Paglarini, Vitor A. S. Vidal, Iramaia A. Neri-Numa, Glaucia M. Pastore, Marise A. R. Pollonio
Summary: This study evaluated the effect of commercial plant extracts as natural antioxidants in mechanically deboned poultry meat. The extracts were characterized for phenolic compounds, flavonoids, and antioxidant activity. Results showed that grape, green tea, mate, and rosemary extracts had a positive effect in decelerating lipid oxidation in MDPM. The addition of these extracts extended the shelf life of MDPM and improved the quality of meat products.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Biochemistry & Molecular Biology
Elwira Sieniawska, Lukasz Swiatek, Kouadio Ibrahime Sinan, Gokhan Zengin, Anastazja Boguszewska, Malgorzata Polz-Dacewicz, Nabeelah Bibi Sadeer, Ouattara Katinan Etienne, Mohamad Fawzi Mahomoodally
Summary: This study evaluated the biological and chemical properties of Ficus sur Forssk. extracts, revealing their antioxidant, enzyme inhibitory, anticancer, and antiviral activities. The findings provide valuable scientific data for the development of innovative phytopharmaceuticals.
Article
Food Science & Technology
Ilker Erken, Saliha Sahin, Busra Karkar, Bekir Akca, Cuneyt Ozakin
Summary: This study investigated the production, characterization, antioxidant capacity, and antibacterial activity of chitosan-based edible and biodegradable films prepared with extracts from Prunella grandiflora, Prunella laciniata, Prunella orientalis, and Prunella vulgaris. The results confirmed that these films had desirable physical and surface properties and contained phenolic compounds with antioxidant properties. The films were found to have potential applications in food and packaging industries.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2022)
Review
Biotechnology & Applied Microbiology
Shikai Zhao, Fang Hua, Jiarong Yan, Hongye Yang, Cui Huang
Summary: This systematic review evaluated the effects of plant extracts on dentin bonding strength, showing that the application of proanthocyanidin (PA) primers improved the immediate bonding strength of dental adhesives in vitro.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Review
Environmental Sciences
S. Keerthanan, Chamila Jayasinghe, Jayanta Kumar Biswas, Meththika Vithanage
Summary: The article reviews the occurrence of pharmaceutical and personal care products (PPCPs) in the environment and their impacts on plants, as well as the potential risks to human health. It highlights the differential uptake and bioaccumulation of PPCPs in plants, with a focus on the factors influencing plant uptake and translocation. Future research should address the mechanisms of plant uptake and translocation of PPCPs and strategies to reduce human health risks associated with consumption of contaminated plants.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
S. Keerthanan, Amit Bhatnagar, Kushani Mahatantila, Chamila Jayasinghe, Yong Sik Ok, Meththika Vithanage
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2020)
Article
Environmental Sciences
S. Keerthanan, Suranga M. Rajapaksha, Lukas Trakal, Meththika Vithanage
ENVIRONMENTAL RESEARCH
(2020)
Article
Environmental Sciences
S. Keerthanan, Chaminda Gunawardane, Thiruchenduran Somasundaram, Tharuka Jayampathi, Chamila Jayasinghe, Meththika Vithanage
Summary: This study evaluated the immobilization and transport of caffeine in soil, as well as the influence of biochar. ULBC showed a higher retention affinity towards caffeine, with effects on different pH values and concentrations of CFN. Biochar-amended soil reduced the transport potential of CFN.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Yohan Jayawardhana, S. Keerthanan, Su Shiung Lam, Meththika Vithanage
Summary: The study investigated the adsorptive removal of toluene and ethylbenzene from aqueous media using biochar derived from municipal solid waste at temperatures ranging from 25 to 45 degrees Celsius. The adsorption was mildly pH-dependent, with peak adsorption occurring at a pH of around 8 in both single and binary contaminant systems. The Langmuir and Hill models were found to fit the isotherm results well for toluene and ethylbenzene adsorption in single contaminant environments.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Oshadi Hettithanthri, Anushka Upamali Rajapaksha, S. Keerthanan, Sammani Ramanayaka, Meththika Vithanage
Summary: The present research examined the capacity of disc-milled high lignin biochar colloids (CBC) for the removal of ciprofloxacin (CPX) and found that CBC demonstrated effective removal of CPX, indicating its potential in wastewater treatment. The study also investigated the impact of factors such as initial pH, ionic strength, resident time, initial CPX concentration, and temperature on the adsorption of CPX on CBC, and studied the adsorption mechanisms.
Review
Environmental Sciences
Nanthi Bolan, Manish Kumar, Ekta Singh, Aman Kumar, Lal Singh, Sunil Kumar, S. Keerthanan, Son A. Hoang, Ali El-Naggar, Meththika Vithanage, Binoy Sarkar, Hasintha Wijesekara, Saranga Diyabalanage, Prasanthi Sooriyakumar, Ajayan Vinu, Hailong Wang, M. B. Kirkham, Sabry M. Shaheen, Jorg Rinklebe, Kadambot H. M. Siddique
Summary: This review summarizes the sources, geochemical distribution and speciation of antimony in soils and aquatic environments, the biogeochemical processes governing its mobilization, bioavailability, and toxicity, as well as the potential threats to human and ecosystem health. It also discusses approaches for remediating antimony-contaminated soils and water to mitigate environmental and health risks. Additionally, it highlights knowledge gaps and future research needs in this field.
ENVIRONMENT INTERNATIONAL
(2022)
Article
Environmental Sciences
Nanthi Bolan, Son A. Hoang, Mohsin Tanveer, Lei Wang, Shiv Bolan, Prasanthi Sooriyakumar, Brett Robinson, Hasintha Wijesekara, Madhuni Wijesooriya, S. Keerthanan, Meththika Vithanage, Bernd Markert, Stefan Fraenzle, Simone Wuenschmann, Binoy Sarkar, Ajayan Vinu, M. B. Kirkham, Kadambot H. M. Siddique, Joerg Rinklebe
Summary: The increasing demand for lithium has raised global concerns about environmental contamination, as lithium's high mobility leads to pollution in soil and water, impacting human and ecosystem health. Efforts to remediate lithium-contaminated ecosystems are crucial to addressing these issues.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Manish Kumar, Nanthi S. Bolan, Son A. Hoang, Ankush D. Sawarkar, Tahereh Jasemizad, Bowen Gao, S. Keerthanan, Lokesh P. Padhye, Lal Singh, Sunil Kumar, Meththika Vithanage, Yang Li, Ming Zhang, M. B. Kirkham, Ajayan Vinu, Joerg Rinklebe
Summary: PAHs are generated due to incomplete burning of organic substances, primarily influenced by the use of fossil fuels. They impose health impacts on humans and other living organisms due to their carcinogenic, mutagenic, or teratogenic properties. Their high hydrophobicity and low water solubility influence their adsorption onto soils and sediments, affecting their bioavailability and subsequent degradation.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Construction & Building Technology
Kapilraj Natkunarajah, Koneswaran Masilamani, Sithambaresan Maheswaran, Barbara Lothenbach, D. A. S. Amarasinghe, Dinesh Attygalle
Summary: This study focused on investigating the changes in pH value of concrete pore solution during the hydration process, and found that the direct measurement of pH using methods like pH electrode and titration underestimated the real values due to dilution effect, while results obtained from measured alkali concentrations were more reliable.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Environmental Sciences
S. Keerthanan, Chamila Jayasinghe, Nanthi Bolan, Joerg Rinklebe, Meththika Vithanage
Summary: The objective of this research was to evaluate the efficacy of cinnamon wood biochar (CWBC) in adsorbing sulfamethoxazole (SUL), which alleviates bioavailability and plant uptake. The study found that the addition of biochar significantly reduced the mobility and uptake of SUL, providing a possible solution for reducing the bioavailability of SUL in the environment.
Article
Environmental Sciences
Santhirasekaram Keerthanan, Anushka Upamali Rajapaksha, Ondrej Masek, Meththika Vithanage
Summary: This review examined the potential of biochar as an adsorbent to limit the uptake of personal care products (PCPs) by plants. The study found that there is limited research on the effects of biochar on plant uptake and immobilization of PCPs. Biosolid application and wastewater irrigation were determined to be the main sources of PCPs in the environment. The review also highlighted the importance of biochar feedstock, production temperature, and application rate in immobilizing PCPs in soil.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
