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https://www.readbyqxmd.com/read/28804487/the-response-of-phagocytes-to-indoor-air-toxicity
#1
Liisa K Vilén, Janne Atosuo, Esa-Matti Lilius
This perspective presents a viewpoint on potential methods assessing toxicity of indoor air. Until recently, the major techniques to document moldy environment have been microbial isolation using conventional culture techniques for fungi and bacteria as well as in some instances polymerase chain reaction to detect microbial genetic components. However, it has become increasingly evident that bacterial and fungal toxins, their metabolic products, and volatile organic substances emitted from corrupted constructions are the major health risks...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28800826/effect-of-thyme-essential-oil-and-lactococcus-lactis-cbm21-on-the-microbiota-composition-and-quality-of-minimally-processed-lamb-s-lettuce
#2
Lorenzo Siroli, Francesca Patrignani, Diana I Serrazanetti, Pamela Vernocchi, Federica Del Chierico, Alessandra Russo, Sandra Torriani, Lorenza Putignani, Fausto Gardini, Rosalba Lanciotti
The main aim of this work was to evaluate, at pilot scale in an industrial environment, the effects of the biocontrol agent Lactococcus lactis CBM21 and thyme essential oil compared to chlorine, used in the washing step of fresh-cut lamb's lettuce, on the microbiota and its changes in relation to the time of storage. The modification of the microbial population was studied through pyrosequencing in addition to the traditional plate counts. In addition, the volatile molecule and sensory profiles were evaluated during the storage...
December 2017: Food Microbiology
https://www.readbyqxmd.com/read/28798756/aerial-warfare-a-volatile-dialogue-between-the-plant-pathogen-verticillium-longisporum-and-its-antagonist-paenibacillus-polymyxa
#3
Daria Rybakova, Ute Rack-Wetzlinger, Tomislav Cernava, Angelika Schaefer, Maria Schmuck, Gabriele Berg
Verticillium wilt caused by Verticillium spp. results in severe yield losses in a broad range of crops. Verticillium outbreaks are challenging to control, and exacerbated by increases in soil temperatures and drought associated with global warming. Employing natural antagonists as biocontrol agents offers a promising approach to addressing this challenge. Paenibacillus polymyxa Sb3-1 was proven to reduce the growth of Verticillium longisporum during in vitro experiments and was shown to promote the growth of oilseed rape seedlings infested with V...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28792108/comprehensive-headspace-gas-chromatographic-analysis-of-denaturants-in-denatured-ethanol
#4
Niels van Boxtel, Kris Wolfs, Marta Guillén Palacín, Ann Van Schepdael, Erwin Adams
To discourage consumption, ethanol is often denatured using both volatile (e.g. methyl ethyl ketone and isopropanol) and non-volatile (e.g. denatonium benzoate) chemical substances. As a result, the analysis of denatured ethanol samples is usually performed by multiple techniques such as gas chromatography for the volatile denaturants and liquid chromatography for the non-volatile ones. However, the need for multiple techniques increases the cost of analysis and forms a severe obstruction for on-site product control...
August 9, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28783070/the-chemical-compositions-of-the-volatile-oils-of-garlic-allium-sativum-and-wild-garlic-allium-vineale
#5
Prabodh Satyal, Jonathan D Craft, Noura S Dosoky, William N Setzer
Garlic, Alliumsativum, is broadly used around the world for its numerous culinary and medicinal uses. Wild garlic, Allium vineale, has been used as a substitute for garlic, both in food as well as in herbal medicine. The present study investigated the chemical compositions of A. sativum and A. vineale essential oils. The essential oils from the bulbs of A. sativum, cultivated in Spain, were obtained by three different methods: laboratory hydrodistillation, industrial hydrodistillation, and industrial steam distillation...
August 5, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28780108/the-effect-of-bleaching-agents-on-the-degradation-of-vitamins-and-carotenoids-in-spray-dried-whey-protein-concentrate
#6
M A Stout, C W Park, M A Drake
Previous research has shown that bleaching affects flavor and functionality of whey proteins. The role of different bleaching agents on vitamin and carotenoid degradation is unknown. The objective of this study was to determine the effects of bleaching whey with traditional annatto (norbixin) by hydrogen peroxide (HP), benzoyl peroxide (BP), or native lactoperoxidase (LP) on vitamin and carotenoid degradation in spray-dried whey protein concentrate 80% protein (WPC80). An alternative colorant was also evaluated...
August 2, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28758221/biological-medicinal-and-toxicological-significance-of-eucalyptus-leaf-essential-oil-a-review
#7
REVIEW
Ashok K Dhakad, Vijay V Pandey, Sobia Beg, Janhvi M Rawat
The genus Eucalyptus L'Heritier comprises about 900 species, of which more than 300 species contain volatile essential oil in their leaves. About 20 species, within these, have a high content of 1,8-cineole (more than 70 %), commercially used for the production of essential oils in pharmaceutical and cosmetic industries. However, Eucalyptus is extensively planted for pulp, plywood, solid wood production but its leaf aromatic oil has astounding widespread biological activities including antimicrobial, antiseptic, antioxidant, chemotherapy agent, respiratory and gastrointestinal disorders treatment, wound healing, and insecticidal/insect repellent, herbicidal, acaricidal, nematicidal, and perfumes, soap making and grease remover...
July 31, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28754207/volatiles-emitted-by-bacillus-sp-bct9-act-as-growth-modulating-agents-on-lactuca-sativa-seedlings
#8
Paola Fincheira, Leonardo Parra, Ana Mutis, Maribel Parada, Andrés Quiroz
Chemical products are applied during horticulture to increase food production, but the environmental problems resulting from these applications have led to a search for more sustainable products. Volatile organic compounds (VOCs) demonstrating plant growth promoter (PGP) activity released by bacterial species have emerged as alternatives, but their effects on Lactuca sativa growth are unknown. In this study, VOCs released by Bacillus sp. BCT9 cultures grown in different media (Methyl Red & Voges Proskauer, Murashige & Skoog and nutrient media) at concentrations of 0...
October 2017: Microbiological Research
https://www.readbyqxmd.com/read/28749560/arbuscular-mycorrhizal-fungi-alter-the-content-and-composition-of-secondary-metabolites-in-bituminaria-bituminosa-l
#9
Laura Pistelli, Virginia Ulivieri, Silvia Giovanelli, Luciano Avio, Manuela Giovannetti, Luisa Pistelli
Secondary metabolites may be affected by arbuscular mycorrhizal fungi (AMF), which are beneficial symbionts associated with the roots of most plant species. Bituminaria bituminosa (L.) C.H.Stirt is known as a source of several phytochemicals and therefore used in folk medicine as vulnerary, cicatrizing, disinfectant agent. Characteristic metabolites found in B. bituminosa are furanocoumarins and pterocarpans which are used in cosmetics and as chemotherapeutic agents. Here we address the question whether AMF inoculation may affect positively the synthesis of these phytochemicals...
July 27, 2017: Plant Biology
https://www.readbyqxmd.com/read/28749267/comparison-of-isoflurane-and-sevoflurane-for-short-term-anesthesia-in-meerkats-suricata-suricatta-are-there-benefits-that-outweigh-costs
#10
Taina B Strike, Jon Bielby, Yedra Feltrer, Hatim I K Alibhai, Matthew Rendle, David M Neilson
Meerkats ( Suricata suricatta ) are routinely anesthetized with isoflurane in zoo and field settings. Twenty healthy adult meerkats of mixed age and sex held in the Zoological Society of London's collection were anesthetized with 4% isoflurane by face mask for routine health examinations. The procedure was repeated 5 mo later in the same group of animals utilizing sevoflurane at 5% for induction, and again 3 mo later with sevoflurane at 6.5% for induction to approximate equipotency with isoflurane. The speed and quality of induction and recovery were compared between the two volatile anesthetic agents...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28747829/effects-of-grapefruit-seed-extract-on-oxidative-stability-and-quality-properties-of-cured-chicken-breast
#11
Su-Tae Kang, Hee-Kyoung Son, Hyun-Joo Lee, Jung-Seok Choi, Yang-Il Choi, Jae-Joon Lee
This study investigated the antioxidative and functional effects of a curing agent containing grapefruit seed extract (GSE) on the quality and storage characteristics of chicken breast. The total polyphenol and total flavonoid contents of GSE were 45.06 mg/g and 36.06 mg/g, respectively. The IC50 value of 2,2-diphenyl-1-picrylhydrazyl hydroxyl scavenging of GSE was 333.33 μg/mL. The chicken breast comprised six groups: no-treatment (N), 0.2% ascorbic acid + 70 ppm sodium nitrite (C), 0.05% GSE (G0.05), 0.1% GSE (G0...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28747483/multi-functional-roles-of-a-soldier-specific-volatile-as-a-worker-arrestant-primer-pheromone-and-an-antimicrobial-agent-in-a-termite
#12
Yuki Mitaka, Naoki Mori, Kenji Matsuura
Division of labour in eusocial insects is characterized by efficient communication systems based on pheromones. Among such insects, termites have evolved specialized sterile defenders, called soldiers. Because they are incapable of feeding themselves, it has been suggested that soldiers are sustained by workers and emit the pheromone arresting workers. However, such a soldier pheromone has not been identified in any termite species, and the details of the soldier-worker interaction remain to be explored. Here, we identified a soldier-specific volatile sesquiterpene as a worker arrestant, which also acts as a primer pheromone regulating soldier differentiation and fungistatic agent in a termite Reticulitermes speratus Chemical analyses revealed that (-)-β-elemene is the major component of soldier extract, and its authentic standard exhibited arrestant activity to workers and inhibited the differentiation from workers to soldiers...
July 26, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28742251/evolution-of-volatile-emission-in-rhus-coriaria-organs-during-different-stages-of-growth-and-evaluation-of-the-essential-oil-composition
#13
Rose Vanessa Bandeira Reidel, Pier Luigi Cioni, Luigi Majo, Luisa Pistelli
Rhus coriaria, also known as sumac, have been traditionally used in many countries as spice, condiment, dying agent and medicinal herb. The chemical composition of essential oils and the volatile emissions from different organs of this species collected in Sicily (Italy) were analyzed by GC-FID and GC-MS. Monoterpene and sesquiterpene hydrocarbons were the most abundant class in the volatile emissions with β-caryophyllene and α-pinene were the main constituents in the majority of the examined samples. The EO composition was characterized by high amount of monoterpene and sesquiterpene hydrocarbons together with diterpenes...
July 25, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28740234/virgin-queen-attraction-toward-males-in-honey-bees
#14
Florian Bastin, Hanna Cholé, Grégory Lafon, Jean-Christophe Sandoz
Although the honeybee is a crucial agricultural agent and a prominent scientific model organism, crucial aspects of its reproductive behaviour are still unknown. During the mating season, honeybee males, the drones, gather in congregations 10-40 m above ground. Converging evidence suggests that drones emit a pheromone that can attract other drones, thereby increasing the size of the congregation. Virgin queens join the vicinity of the congregation after it has formed, and mate with as many as 20 males in mid-air...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28740104/host-seeking-parasitic-nematodes-use-specific-odors-to-assess-host-resources
#15
Tiffany Baiocchi, Grant Lee, Dong-Hwan Choe, Adler R Dillman
Entomopathogenic nematodes (EPNs) are insect parasites used as biological control agents. Free-living infective juveniles (IJs) of EPNs employ host-seeking behaviors to locate suitable hosts for infection. We found that EPNs can differentiate between naïve and infected hosts, and that host attractiveness changes over time in a species-specific manner. We used solid-phase microextraction and gas chromatography/mass spectrometry to identify volatile chemical cues that may relay information about a potential host's infection status and resource availability...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28733043/perioperative-hypotension-and-discharge-outcomes-in-non-critically-injured-trauma-patients-a-single-centre-retrospective-cohort-study
#16
Nadav Sheffy, Itay Bentov, Brianna Mills, Bala G Nair, G Alec Rooke, Monica S Vavilala
BACKGROUND: There is a lack of information on the effect of age on perioperative care and outcomes after minor trauma in the elderly. We examined the association between perioperative hypotension and discharge outcome among non-critically injured adult patients. METHODS: We conducted a retrospective study of non-critically ill patients (ISS <9 or discharged within less than 24h) who received anaesthesia care for surgery and Recovery Room care at a level-1 trauma centre between 5/1/2012 and 11/30/2013...
June 24, 2017: Injury
https://www.readbyqxmd.com/read/28732943/encompassment-of-benzyl-isothiocyanate-in-cyclodextrin-using-ultrasonication-methodology-to-enhance-its-stability-for-biological-applications
#17
Shivani Uppal, Khushwinder Kaur, Rajendra Kumar, Nakshdeep Kaur Kahlon, Rachna Singh, S K Mehta
The use of methodical and innovative sonication method has been explored for the fabrication of inclusion complex of Benzyl Isothiocyanate, a potential anticancer and -antimicrobial agent. The advancement involved investigation of inclusion behaviour, characterisation and an in-depth study of thermal and UV stability of Benzyl Isothiocyanate with cyclodextrins; β-CD and hp-β-CD. The sonication driven encompassment in cyclodextrins helped to overcome the hindrance of low solubility and high volatility. Investigations of physical and thermodynamic parameters using UV-visible spectroscopy, FTIR, XRD, TGA etc confirmed stability of inclusion complexes...
November 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28727415/hydrophobic-nanosized-all-silica-beta-zeolite-efficient-synthesis-and-adsorption-application
#18
Zhiguo Zhu, Hao Xu, Jingang Jiang, Haihong Wu, Peng Wu
All-silica beta zeolite, synthesized by conventional hydroxide route, usually possesses small crystal size of a few hundred nanometers but poor hydrophobicity, whereas the fluoride-mediated one exhibits to be highly hydrophobic but microsized. To obtain nanosized all-silica beta zeolite with excellent hydrophobicity, an innovative and efficient hydrothermal route via interzeolite transformation for synthesizing all-silica beta zeolite is proposed in present study. With the assistance of beta seeds and tetraethylammonium hydroxide as the structure-directing agent, siliceous beta zeolite is well-crystallized at a high solid yield via dissolution-recrystallization of all-silica ITQ-1 crystals at an extremely low water content (H2O/SiO2 molar ratio of 1)...
August 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28725238/a-non-targeted-metabolomics-approach-unravels-the-vocs-associated-with-the-tomato-immune-response-against-pseudomonas-syringae
#19
María Pilar López-Gresa, Purificación Lisón, Laura Campos, Ismael Rodrigo, José Luis Rambla, Antonio Granell, Vicente Conejero, José María Bellés
Volatile organic compounds (VOCs) emitted by plants are secondary metabolites that mediate the plant interaction with pathogens and herbivores. These compounds may perform direct defensive functions, i.e., acting as antioxidant, antibacterial, or antifungal agents, or indirectly by signaling the activation of the plant's defensive responses. Using a non-targeted GC-MS metabolomics approach, we identified the profile of the VOCs associated with the differential immune response of the Rio Grande tomato leaves infected with either virulent or avirulent strains of Pseudomonas syringae DC3000 pv...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28722154/application-of-headspace-solid-phase-microextraction-followed-by-gas-chromatography-coupled-with-mass-spectrometry-spme-gc-ms-to-determine-esters-of-carboxylic-acids-and-other-volatile-compounds-in-d-maculatus-and-d-ater-lipids
#20
Magdalena Cerkowniak, Mieczysława I Boguś, Emilia Włóka, Piotr Stepnowski, Marek Gołębiowski
A constant problem in veterinary medicine, human healthcare, agriculture, forestry or horticulture is the large number of pests, and the lack of effective methods to combat them which cause no harm to the rest of the environment. It is recommended and desired to reduce the use of chemicals and increase the use of agents based on the knowledge acquired in the field of biology, chemistry, and agrochemicals. To learn the defense mechanisms of insects we should consider not only the site of their physiological ability to protect against external factors (cuticle), but also check the possibility of chemical protection, formed by all compounds on the surface and in the body of insects...
July 19, 2017: Biomedical Chromatography: BMC
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