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Jun-Hwan Park, Hoi-Seon Lee
The insecticidal toxicities of essential oils and other active components extracted from Eucalyptus dives leaves (as well as structural analogues) were studied against stored-product insects, Plodia interpunctella and Tribolium castaneum. 3-Carvomenthenone was purified from E. dives oil, and the structures were elucidated by electron ionization mass spectra,1 H-nuclear magnetic resonance (NMR),13 C-NMR, heteronuclear multiple quantum coherence,1 H-1 H correlation spectroscopy, and distortionless enhancement by polarization transfer NMR...
March 15, 2018: Journal of Food Protection
Evy Paulsen, Henrik Thormann, Louise Vestergaard
No abstract text is available yet for this article.
April 2018: Contact Dermatitis
Jie Luo, Jian Wu, Siyuan Huo, Shihua Qi, Xiaowen Sophie Gu
The combined utilization of direct or alternating electric fields and phytoremediation was designed to decontaminate multi-metal polluted soil at a field scale e-waste recycling impacted site. Eucalyptus globulus was chosen for metal purification for its resilient and unpalatable nature. Biomass production, metal concentration and water use efficiency of the species under direct current (DC) and alternating current (AC) fields with various voltages were investigated. DC and AC fields stimulated the growth of the plant, except for DC field with high voltage (10 V)...
March 5, 2018: Chemosphere
Yanjie Li, Clemens Altaner
Time and resource are the restricting factors for the wider use of chemical information of wood in tree breeding programs. NIR offers an advantage over wet-chemical analysis in these aspects and is starting to be used for tree breeding. This work describes the development of a NIR-based assessment of extractive content in heartwood of E. bosistoana, which does not require milling and conditioning of the samples. This was achieved by applying the signal processing algorithms (external parameter orthogonalisation (EPO) and significance multivariate correlation (sMC)) to spectra obtained from solid wood cores, which were able to correct for moisture content, grain direction and sample form...
March 1, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Jakob B Butler, Jules S Freeman, Brad M Potts, René E Vaillancourt, Dario Grattapaglia, Orzenil B Silva-Junior, Blake A Simmons, Adam L Healey, Jeremy Schmutz, Kerrie W Barry, David J Lee, Robert J Henry, Graham J King, Abdul Baten, Mervyn Shepherd
Terpenes are economically and ecologically important phytochemicals. Their synthesis is controlled by the terpene synthase (TPS) gene family, which is highly diversified throughout the plant kingdom. The plant family Myrtaceae are characterised by especially high terpene concentrations, and considerable variation in terpene profiles. Many Myrtaceae are grown commercially for terpene products including the eucalypts Corymbia and Eucalyptus. Eucalyptus grandis has the largest TPS gene family of plants currently sequenced, which is largely conserved in the closely related E...
March 10, 2018: Heredity
Abderrahmen Merghni, Emira Noumi, Ons Hadded, Neyla Dridi, Harsh Panwar, Ozgur Ceylan, Maha Mastouri, Mejdi Snoussi
Antibacterial resistance is an increasingly serious threat to global public health. The search for new anti-infection agents from natural resources, with different mode of actions and competitive effects became a necessity. In this study, twenty height methicillin-resistant Staphylococcus aureus (MRSA) strains were investigated for their biofilm formation ability. Subsequently, the antibiofilm effects of Eucalyptus globulus essential oil and its main component 1,8-cineole, against MRSA, as well as their antiquorum sensing potential, were evaluated...
March 6, 2018: Microbial Pathogenesis
Huifang Zhao, Jing Li, Xuejin Zhang
In this work, a fundamental understanding of oxygen delignification distracted by dissolved lignin was investigated. In the new biorefinery model of shortening kraft pulping integrated with extended oxygen delignification process, increasing content of residual lignin in the original pulp could result in enhanced delignification efficiency, higher pulp viscosity and less carbonyl groups. However, the invalid oxygen consumption by dissolved lignin could be increased with the increase of process temperature and alkali dosage...
February 27, 2018: Bioresource Technology
Tiffany Schroder, Sharyn Gaskin, Kirstin Ross, Harriet Whiley
Fungal contamination of indoor air is an issue of increasing public health concern. Essential oils have been demonstrated to have antifungal capabilities, but there are limited studies investigating the efficacy of essential oils against fungi relevant to air quality. This study provides a preliminary screening of the antifungal properties of clove, lavender and eucalyptus essential oils against a range of fungal species isolated from environmental air samples. The ability of the essential oils to inhibit fungal growth was examined using the disk diffusion assay on malt extract agar and was compared with vinegar, bleach and limonene, with phenol as a positive control...
March 8, 2018: International Journal of Occupational and Environmental Health
Itan Preis, Miron Abramson, Oded Shoseyov
Plant tissue is composed of many different types of cells. Plant cells required to withstand mechanical pressure, such as vessel elements and fibers, have a secondary cell wall consisting of polysaccharides and lignin, which strengthen the cell wall structure and stabilize the cell shape. Previous attempts to alter the properties of the cell wall have mainly focused on reducing the amount of lignin or altering its structure in order to ease its extraction from raw woody materials for the pulp and paper and biorefinery industries...
March 6, 2018: Molecular Biotechnology
Muhammad Rouf Akram, Mahmood Ahmad, Asad Abrar, Rai Muhammad Sarfraz, Asif Mahmood
Background: The present work was conducted to prepare and evaluate transdermal patches with optimization of suitable polymeric blend of poly(meth) acrylates (Eudragit® ) (Ammonio Methacrylate Copolymer Ph Eur) for sustained transdermal delivery of glimepiride. Method: Polymeric matrix transdermal films were prepared by using Ammonio Methacrylate Copolymer Ph Eur RL 100 and Ammonio Methacrylate Copolymer Ph Eur RS 100 as the film former, and dibutyl phthalate (30% w/w) as the plasticizer...
2018: Drug Design, Development and Therapy
P W Crous, M J Wingfield, T I Burgess, A J Carnegie, G E St J Hardy, D Smith, B A Summerell, J F Cano-Lira, J Guarro, J Houbraken, L Lombard, M P Martín, M Sandoval-Denis, A V Alexandrova, C W Barnes, I G Baseia, J D P Bezerra, V Guarnaccia, T W May, M Hernández-Restrepo, A M Stchigel, A N Miller, M E Ordoñez, V P Abreu, T Accioly, C Agnello, A Agustin Colmán, C C Albuquerque, D S Alfredo, P Alvarado, G R Araújo-Magalhães, S Arauzo, T Atkinson, A Barili, R W Barreto, J L Bezerra, T S Cabral, F Camello Rodríguez, R H S F Cruz, P P Daniëls, B D B da Silva, D A C de Almeida, A A de Carvalho Júnior, C A Decock, L Delgat, S Denman, R A Dimitrov, J Edwards, A G Fedosova, R J Ferreira, A L Firmino, J A Flores, D García, J Gené, A Giraldo, J S Góis, A A M Gomes, C M Gonçalves, D E Gouliamova, M Groenewald, B V Guéorguiev, M Guevara-Suarez, L F P Gusmão, K Hosaka, V Hubka, S M Huhndorf, M Jadan, Ž Jurjević, B Kraak, V Kučera, T K A Kumar, I Kušan, S R Lacerda, S Lamlertthon, W S Lisboa, M Loizides, J J Luangsa-Ard, P Lysková, W P Mac Cormack, D M Macedo, A R Machado, E F Malysheva, P Marinho, N Matočec, M Meijer, A Mešić, S Mongkolsamrit, K A Moreira, O V Morozova, K U Nair, N Nakamura, W Noisripoom, I Olariaga, R J V Oliveira, L M Paiva, P Pawar, O L Pereira, S W Peterson, M Prieto, E Rodríguez-Andrade, C Rojo De Blas, M Roy, E S Santos, R Sharma, G A Silva, C M Souza-Motta, Y Takeuchi-Kaneko, C Tanaka, A Thakur, M Th Smith, Z Tkalčec, N Valenzuela-Lopez, P van der Kleij, A Verbeken, M G Viana, X W Wang, J Z Groenewald
Novel species of fungi described in this study include those from various countries as follows: Antarctica : Cadophora antarctica from soil. Australia : Alfaria dandenongensis on Cyperaceae , Amphosoma persooniae on Persoonia sp., Anungitea nullicana on Eucalyptus sp . , Bagadiella eucalypti on Eucalyptus globulus , Castanediella eucalyptigena on Eucalyptus sp., Cercospora dianellicola on Dianella sp., Cladoriella kinglakensis on Eucalyptus regnans , Cladoriella xanthorrhoeae (incl. Cladoriellaceae fam. nov...
December 2017: Persoonia
Vasiliki Andreou, Irini F Strati, Charalambos Fotakis, Maria Liouni, Panagiotis Zoumpoulakis, Vassilia J Sinanoglou
Grape marc distillates are traditional alcoholic beverages, produced mostly in the Mediterranean countries. The present study proposes the enrichment of a Greek traditional grape marc distillate (tsikoudia) with selected herbs to enhance its natural antioxidants and functional properties. Total phenolic content, the antiradical and antioxidant activities, as well as the phenolic and sugar profiles using NMR and FT-IR spectroscopy were evaluated. The enrichment of distillates with Syzygium aromaticum L., Jasminum officinale L...
July 1, 2018: Food Chemistry
Erick Saldaña, Luiz Saldarriaga Castillo, Jorge Cabrera Sánchez, Raúl Siche, Marcio Aurélio de Almeida, Jorge H Behrens, Miriam Mabel Selani, Carmen J Contreras-Castillo
The aim of this study was to perform a descriptive analysis (DA) of bacons smoked with woods from reforestation and liquid smokes in order to investigate their sensory profile. Six samples of bacon were selected: three smoked bacons with different wood species (Eucalyptus citriodora, Acacia mearnsii, and Bambusa vulgaris), two artificially smoked bacon samples (liquid smoke) and one negative control (unsmoked bacon). Additionally, a commercial bacon sample was also evaluated. DA was developed successfully, presenting a good performance in terms of discrimination, consensus and repeatability...
February 21, 2018: Meat Science
Ayesha I T Tulloch, Jane McDonald, Peter Cosier, Carla Sbrocchi, John Stein, David Lindenmayer, Hugh P Possingham
Developing a standardized approach to measuring the state of biodiversity in landscapes undergoing disturbance is crucial for evaluating and comparing change across different systems, assessing ecosystem vulnerability and the impacts of destructive activities, and helping direct species recovery actions. Existing ecosystem metrics of condition fail to acknowledge that a particular community could be in multiple states, and the distribution of states could worsen or improve when impacted by a disturbance process, depending on how far the current landscape distribution of states diverges from pre-anthropogenic impact baseline conditions...
February 28, 2018: Ecological Applications: a Publication of the Ecological Society of America
Yushu Zhang, Hong Ding, Xiangzhou Zheng, Xiangyun Ren, Laura Cardenas, Alison Carswell, Tom Misselbrook
The change in land-use from woodland to crop production leads to increased nitrous oxide (N2 O) emissions. An understanding of the main N2 O sources in soils under a particular land can be a useful tool in developing mitigation strategies. To better understand the effect of land-use on N2 O emissions, soils were collected from 5 different land-uses in southeast China: shrub land (SB), eucalyptus plantation (ET), sweet potato farmland (SP), citrus orchard (CO) and vegetable growing farmland (VE). A stable isotope experiment was conducted incubating soils from the different land use types at 60% water holding capacity (WHC), using15 NH4 NO3 and NH4 15 NO3 to determine the dominant N2 O production pathway for the different land-uses...
February 24, 2018: Environmental Pollution
David B Lindenmayer, Wade Blanchard, David Blair, Lachlan McBurney, John Stein, Sam C Banks
Large old trees are critically important keystone structures in forest ecosystems globally. Populations of these trees are also in rapid decline in many forest ecosystems, making it important to quantify the factors that influence their dynamics at different spatial scales. Large old trees often occur in forest landscapes also subject to fire and logging. However, the effects on the risk of collapse of large old trees of the amount of logging and fire in the surrounding landscape are not well understood. Using an 18-year study in the Mountain Ash (Eucalyptus regnans) forests of the Central Highlands of Victoria, we quantify relationships between the probability of collapse of large old hollow-bearing trees at a site and the amount of logging and the amount of fire in the surrounding landscape...
2018: PloS One
Monu Yadav, Deepak Kumar Jindal, Milind Parle, Anil Kumar, Sameer Dhingra
Essential oil of eucalyptus species is among the most common traded essential oils in the world. There is an increasing interest in the application of eucalyptus oil as a natural additive in food and pharmaceutical industry. The present study was undertaken to identify the phytoconstituents present in the essential oil of Eucalyptus globulus leaves (EO) and ascertain their protective effect against ketamine-induced psychosis in rats. GC-MS technique was used for analysis of phytoconstituents present in EO. Ketamine (50 mg/kg, i...
February 20, 2018: Inflammopharmacology
Alexandre S Pimenta, Maíra Fasciotti, Thays V C Monteiro, Kássio M G Lima
The present study aimed to characterize the chemical composition of pyroligneous acid (PA) obtained from slow pyrolysis of the clone GG100 of Eucalyptus urophylla × Eucalyptus grandis . The efficiency of extraction of organic compounds by using different solvents-dichloromethane (DCM), diethyl ether (DE) and ethyl acetate (EA)-was evaluated. Wood discs were collected and carbonized at a heating rate of 1.25 °C/min until 450 °C. Pyrolysis gases were trapped and condensed, yielding a crude liquid product (CLP), which was refined to obtain pure PA...
February 15, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Felipe Martello, Francesco de Bello, Maria Santina de Castro Morini, Rogério R Silva, Débora Rodriges de Souza-Campana, Milton Cezar Ribeiro, Carlos P Carmona
Despite its negative impacts on the environment and biodiversity, tree plantations can contribute to biodiversity conservation in fragmented landscapes, as they harbor many native species. In this study, we investigated the impact of Eucalyptus plantations on the taxonomic and functional diversity of ant communities, comparing ant communities sampled in managed and unmanaged (abandoned for 28 years) Eucalyptus plantations, and native Atlantic rain forests. Eucalyptus plantations, both managed and unmanaged, reduced the functional diversity and increased the similarity between ant communities leading to functional homogenization...
February 19, 2018: Scientific Reports
Rania K Eid, Ebtessam A Essa, Gamal M El Maghraby
The fluidity of vesicular membrane affects vesicular transdermal drug delivery. Essential oils can be located in vesicular membrane imparting flexibility and influencing transdermal delivery. Accordingly, the objective was to investigate the effect of incorporation of essential oils in niosomes on felodipine transdermal delivery. Rigid niosomes comprising Span 60 with cholesterol (2:1, w/w) were used with clove, eucalyptus or lemon oils being incorporated in the vesicles at increasing concentrations. The vesicle size and shape was monitored using scanning electron microscopy...
February 14, 2018: Pharmaceutical Development and Technology
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