scholarly journals Identification of Volatile Sulfur Compounds Produced by Schizophyllum commune

2021 ◽  
Vol 7 (6) ◽  
pp. 465
Author(s):  
Takahito Toyotome ◽  
Masahiko Takino ◽  
Masahiro Takaya ◽  
Maki Yahiro ◽  
Katsuhiko Kamei
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Lead Acetate ◽  
Schizophyllum Commune ◽  
Dimethyl Disulfide ◽  
Sulfur Compounds ◽  
Volatile Sulfur Compounds ◽  
Volatile Organic ◽  
Allergic Bronchopulmonary Mycosis ◽  
Volatile Sulfur

Schizophyllum commune is a causative agent of allergic bronchopulmonary mycosis, allergic fungal rhinosinusitis, and basidiomycosis. Diagnosis of these diseases remains difficult because no commercially available tool exists to identify the pathogen. Unique volatile organic compounds produced by a pathogen might be useful for non-invasive diagnosis. Here, we explored microbial volatile organic compounds produced by S. commune. Volatile sulfur compounds, dimethyl disulfide (48 of 49 strains) and methyl ethyl disulfide (49 of 49 strains), diethyl disulfide (34 of 49 strains), dimethyl trisulfide (40 of 49 strains), and dimethyl tetrasulfide (32 of 49 strains) were detected from headspace air in S. commune cultured vials. Every S. commune strain produced at least one volatile sulfur compound analyzed in this study. Those volatile sulfur compounds were not detected from the cultures of Aspergillus spp. (A. fumigatus, A. flavus, A. niger, and A. terreus), which are other major causative agents of allergic bronchopulmonary mycosis. The last, we examined H2S detection using lead acetate paper. Headspace air from S. commune rapidly turned the lead acetate paper black. These results suggest that those volatile sulfur compounds are potent targets for the diagnosis of S. commune and infectious diseases.

scholarly journals Dynamics of Volatile Sulfur Compounds and Volatile Organic Compounds in Sewer Headspace Air

2017 ◽  
Vol 143 (2) ◽  
pp. 04016080 ◽  
Author(s):  
Eric C. Sivret ◽  
Nhat Le-Minh ◽  
Bei Wang ◽  
Xinguang Wang ◽  
Richard M. Stuetz
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Sulfur Compounds ◽  
Volatile Sulfur Compounds ◽  
Volatile Organic ◽  
Volatile Sulfur

First Comprehensive Measurements of Emission Rates of Greenhouse Gases, Volatile Organic Compounds and Reduced Sulfur Compounds from a Tailings Pond in the Alberta Oil Sands

2020 ◽  
Author(s):  
Ralf Staebler ◽  
Samar Moussa ◽  
Yuan You ◽  
Hayley Hung ◽  
Maryam Moradi ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Oil Sands ◽  
Regulatory Compliance ◽  
Sulfur Compounds ◽  
Emission Rates ◽  
Reduced Sulfur Compounds ◽  
Volatile Organic ◽  
Reduced Sulfur

<p>Canada’s Oil Sands Region in northern Alberta contains the world’s largest deposits of commercially exploited bitumen. Extraction of synthetic crude oil from these deposits is a water intensive process, requiring large ponds for water recycling and/or final storage of tailings, already covering a total of over 100 km<sup>2</sup> of liquid surface area in the Athabasca Oil sands. The primary extraction tailings ponds primarily contain sand, silt, clay and unrecovered bitumen, while a few secondary extraction ponds also receive solvents and inorganic and organic by-products of the extraction process. Fugitive emissions of pollutants from these ponds to the atmosphere may therefore be a concern, but until recently, data on emission rates for many pollutants, other than a few reported under regulatory compliance monitoring, were sparse. We present here the results from a comprehensive field campaign to quantify the emissions from a secondary extraction pond to the atmosphere of 68 volatile organic compounds (VOCs), 22 polycyclic aromatic compounds (PACs), 8 reduced sulfur compounds as well as methane, carbon dioxide and ammonia. Three micrometeorological flux methods (eddy covariance, vertical gradients and inverse dispersion modeling) were evaluated for methane fluxes to ensure their mutual comparability. Methane and carbon dioxide fluxes were similar to previous results based on flux chamber measurements. Emission rates for 12 PACs, alkanes and aromatic VOCs, several sulfur species, and ammonia were found to be significant. PACs were dominated by methyl naphthalenes and phenanthrenes, while diethylsulfide and  and n-heptane were the dominant reduced sulfur and VOC species, respectively. The role of these previously unavailable emission rates in regional pollutant budgets will be discussed.</p>

scholarly journals Identification and Characterization of Nnematicidal Volatile Organic Compounds from Deep-Sea Virgibacillus dokdonensis MCCC 1A00493

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 744 ◽  
Author(s):  
Dian Huang ◽  
Chen Yu ◽  
Zongze Shao ◽  
Minmin Cai ◽  
Guangyu Li ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Deep Sea ◽  
Direct Contact ◽  
Dimethyl Disulfide ◽  
Economic Losses ◽  
Root Knot Nematodes ◽  
Fumigant Activity ◽  
Volatile Organic ◽  
Contact Killing

Root-knot nematode diseases cause severe yield and economic losses each year in global agricultural production. Virgibacillus dokdonensis MCCC 1A00493, a deep-sea bacterium, shows a significant nematicidal activity against Meloidogyne incognita in vitro. However, information about the active substances of V. dokdonensis MCCC 1A00493 is limited. In this study, volatile organic compounds (VOCs) from V. dokdonensis MCCC 1A00493 were isolated and analyzed through solid-phase microextraction and gas chromatography–mass spectrometry. Four VOCs, namely, acetaldehyde, dimethyl disulfide, ethylbenzene, and 2-butanone, were identified, and their nematicidal activities were evaluated. The four VOCs had a variety of active modes on M. incognita juveniles. Acetaldehyde had direct contact killing, fumigation, and attraction activities; dimethyl disulfide had direct contact killing and attraction activities; ethylbenzene had an attraction activity; and 2-butanone had a repellent activity. Only acetaldehyde had a fumigant activity to inhibit egg hatching. Combining this fumigant activity against eggs and juveniles could be an effective strategy to control the different developmental stages of M. incognita. The combination of direct contact and attraction activities could also establish trapping and killing strategies against root-knot nematodes. Considering all nematicidal modes or strategies, we could use V. dokdonensis MCCC 1A00493 to set up an integrated strategy to control root-knot nematodes.

The Succession of Flies of Forensic Importance Is Influenced by Volatiles Organic Compounds Emitted During the First Hours of Decomposition of Chicken Remains

2020 ◽  
Vol 57 (5) ◽  
pp. 1411-1420 ◽  
Author(s):  
Yensy María Recinos-Aguilar ◽  
María Dolores García-García ◽  
Edi A Malo ◽  
Leopoldo Cruz-López ◽  
Samuel Cruz-Esteban ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Dimethyl Disulfide ◽  
Chrysomya Rufifacies ◽  
Dimethyl Trisulfide ◽  
Cochliomyia Macellaria ◽  
Volatile Organic ◽  
Primary Reactions ◽  
Decomposition Time ◽  
Apparent Association

Abstract After death, a series of primary reactions occur that produce volatile organic compounds (VOCs) that are released into the environment. In this study, we investigated if the succession of flies of forensic importance in the first hours after death is mediated by VOCs in order to better understanding of the ecology of necrophagous insects. In total, 685 adult insects (Diptera and Hymenoptera) were collected by traps baited with chicken remains at different decomposition times (0, 6, 12, 24, 36, or 48 h). Of the total of insects caught, individuals from six families of Diptera can be cataloged of forensic importance. The most abundant dipteran family was Piophilidae with 213 individuals, followed by Calliphoridae with 178 specimens. Of the total flies caught, 90% were females and the rest were males. Most of the caught females were categorized as gravid, which visited more often the decaying tissues compared to nongravid females. The abundance of the flies increased in the remains with a longer time of decomposition. Six VOCs emitted in different relative quantities were identified according to the decomposition time of the remains. An apparent association was observed between the emission of ρ-cresol with Lucilia eximia (Wiedemann), between the emission of phenol, dimethyl disulfide, and dimethyl trisulfide with Chrysomya rufifacies (Macquart), and between the emissions of indole with Cochliomyia macellaria (Fabricius).

scholarly journals Ecological Role of Volatile Organic Compounds Emitted by Pantoea agglomerans as Interspecies and Interkingdom Signals

2021 ◽  
Vol 9 (6) ◽  
pp. 1186
Author(s):  
Maria Vasseur-Coronado ◽  
Anthi Vlassi ◽  
Hervé Dupré du Boulois ◽  
Rainer Schuhmacher ◽  
Alexandra Parich ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Dimethyl Disulfide ◽  
Dry Weight ◽  
Plant Growth Promoting Rhizobacteria ◽  
Pantoea Agglomerans ◽  
Bacterial Cells ◽  
Tomato Plants ◽  
Tomato Seedlings ◽  
Volatile Organic

Volatile organic compounds (VOCs) play an essential role in microbe–microbe and plant–microbe interactions. We investigated the interaction between two plant growth-promoting rhizobacteria, and their interaction with tomato plants. VOCs produced by Pantoea agglomerans MVC 21 modulates the release of siderophores, the solubilisation of phosphate and potassium by Pseudomonas (Ps.) putida MVC 17. Moreover, VOCs produced by P. agglomerans MVC 21 increased lateral root density (LRD), root and shoot dry weight of tomato seedlings. Among the VOCs released by P. agglomerans MVC 21, only dimethyl disulfide (DMDS) showed effects similar to P. agglomerans MVC 21 VOCs. Because of the effects on plants and bacterial cells, we investigated how P. agglomerans MVC 21 VOCs might influence bacteria–plant interaction. Noteworthy, VOCs produced by P. agglomerans MVC 21 boosted the ability of Ps. putida MVC 17 to increase LRD and root dry weight of tomato seedlings. These results could be explained by the positive effect of DMDS and P. agglomerans MVC 21 VOCs on acid 3-indoleacetic production in Ps. putida MVC 17. Overall, our results clearly indicated that P. agglomerans MVC 21 is able to establish a beneficial interaction with Ps. putida MVC 17 and tomato plants through the emission of DMDS.

Kuantifikasi Kandungan Volatile Organic Compounds (VOC) di Kawasan Desa Sungai Rambe untuk Memprediksi Keberadaan Minyak Bumi

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Sutrisno ◽  
Rayandra Asyhar ◽  
Rahmi ◽  
Andrian Tri Kesuma Wardana
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Dimethyl Sulfide ◽  
Dimethyl Disulfide ◽  
Dimethyl Sulphide ◽  
Alpha Pinene ◽  
Volatile Organic ◽  
Carbonyl Sulphide ◽  
Hydrocarbon Compound ◽  
Three Components

Penelitian ini menggunakan metode Gore Sorber dengan menanamkan alat ke dalam tanah selama 21 hari dan pada hari ke-21 alat tersebut diambil kemudian kandungannya dianalisis dengan menggunakan GC-MS untuk mengetahui jumlah senyawa hidrokarbon yang terkandung dalam minyak bumi. Beberapa senyawa yang terdeteksi dengan metode Gore Sorber diantaranya adalah alfa pinena, dimetil sulfida, karbonil sulfide, dimetil disulfida, butana dana etana. Senyawa tersebut merupakan senyawa yang umum ditemukan pada minyak bumi dengan komposisi alfa pinena 206,34 ng; dimetil sulfida 196,65 ng; dan dimetil disulfida 205,8 ng. Tiga komponen tersebut merupakan komponen minyak bumi hidrokarbon dan non-hidrokarbon.   This research uses Gore Sorber method by implanting the tool into the soil for 21 days then taken on day 21 and directly analyzed using GC-MS instrument to know the amount of hydrocarbon compound contained in petroleum. Some of the compounds detected using Gore-Sorber are alpha pinene, dimethyl sulphide, carbonyl sulphide, dimethyl disulfide, butane and ethane. These components are typical of petroleum compounds seen from the highest components of alpha pinene 206.34 ng, dimethyl sulfide 196.65 ng and dimethyl disulfide 205.8 ng. The three components are petroleum components of hydrocarbons and non-hydrocarbons.

Stability of Volatile Sulfur Compounds (VSCs) in sampling bags – impact of temperature

2013 ◽  
Vol 68 (8) ◽  
pp. 1880-1887 ◽  
Author(s):  
H. Le ◽  
E. C. Sivret ◽  
G. Parcsi ◽  
R. M. Stuetz
Keyword(s):  
Hydrogen Sulfide ◽  
Waste Management ◽  
Dimethyl Sulfide ◽  
Agricultural Practices ◽  
Dimethyl Disulfide ◽  
Sulfur Compounds ◽  
Volatile Sulfur Compounds ◽  
Local Populations ◽  
And Storage ◽  
Volatile Sulfur

Volatile sulfur compounds (VSCs) are a major component of odorous emissions that can cause annoyance to local populations surrounding wastewater, waste management and agricultural practices. Odour collection and storage using sample bags can result in VSC losses due to sorption and leakage. Stability within 72 hour storage of VSC samples in three sampling bag materials (Tedlar, Mylar, Nalophan) was studied at three temperatures: 5, 20, and 30 °C. The VSC samples consisted of hydrogen sulfide (H2S), methanethiol (MeSH), ethanethiol (EtSH), dimethyl sulfide (DMS), tert-butanethiol (t-BuSH), ethylmethyl sulfide (EMS), 1-butanethiol (1-BuSH), dimethyl disulfide (DMDS), diethyl disulfide (DEDS), and dimethyl trisulfide (DMTS). The results for H2S showed that higher loss trend was clearly observed (46–50% at 24 hours) at 30 °C compared to the loss at 5 °C or 20 °C (of up to 27% at 24 hours) in all three bag materials. The same phenomenon was obtained for other thiols with the relative recoveries after a 24 hour period of 76–78% at 30 °C and 80–93% at 5 and 20 °C for MeSH; 77–80% at 30 °C and 79–95% at 5 and 20 °C for EtSH; 87–89% at 30 °C and 82–98% at 5 and 20 °C for t-BuSH; 61–73% at 30 °C and 76–98% at 5 and 20 °C for 1-BuSH. Results for other sulfides and disulfides (DMS, EMS, DMDS, DEDS) indicated stable relative recoveries with little dependency on temperature (83–103% after 24 hours). DMTS had clear loss trends (with relative recoveries of 74–87% in the three bag types after 24 hours) but showed minor differences in relative recoveries at 5, 20, and 30 °C.

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