Search Results - "mass spectrometry"

Historical charcoal additions alter water extractable, particulate and bulk soil C composition and stabilization by Abdelrahman, H., Hofmann, D., Berns, A.E., Meyer, N., Bol, R., Borchard, N.

“…The SOM molecular characteristics were investigated in the solid phase by nuclear magnetic resonance (NMR) and in the WEOM by Fourier transform ion cyclotron resonance mass spectrometry (FT‐ICR‐MS). Formerly added charcoal additions reduced the extracted amount of WEOM and altered POM pattern: an increased proportion of C and N stored in coarse, intermediate, and fine POM relative to corresponding total C and N was found in subsoils. …”
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Retinal biosynthesis in fungi: characterization of the carotenoid oxygenase CarX from Fusarium fujikuroi by Prado-Cabrero, Alfonso, Scherzinger, Daniel, Avalos, Javier, Al-Babili, Salim

“…The identity of the product was proven by high-performance liquid chromatography and gas chromatography-mass spectrometry. Subsequent in vitro assays with heterologously expressed and purified CarX confirmed its β-carotene-cleaving activity and revealed its capability to produce retinal also from other substrates, such as γ-carotene, torulene, and β-apo-8′-carotenal. …”
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Linkage analysis of a rare alkaloid present in a tetraploid potato with Solanum chacoense background by Sagredo, B., Lorenzen, J.H., Casper, H., Lafta, A.

“…Foliar alkaloid analysis of it and its progeny ND5873 (ND4382-19 × Chipeta) by gas chromatography–mass spectrometry (GC–MS) showed that, in addition to the expected alkaloids (solanidine, leptinidine, and acetyl-leptinidine), there was an aglycone of another rare alkaloid. …”
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Mycoflora and mycotoxins in finished fish feed and feed ingredients from smallholder farms in East Africa by Marijani, E., Wainaina, J.M., Charo-Karisa, H., Nzayisenga, L., Munguti, J., Gnonlonfin, G.J.B., Kigadye, E., Okoth, S.

“…Culture and molecular techniques were used to identify fungal isolates from the feedstock, and mycotoxin profiles were determined using liquid chromatography–tandem mass spectrometry. The most prevalent fungal species recovered in the samples was Asperigillus flavus (54.5%). …”
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Metabolomic profile and discrimination of white quinoa seeds from Peru based on UHPLC-HRMS and multivariate analysis by Cabanillas, Billy, Espichán, Fabio, Estrada Zúniga, Rigoberto, Neyra Valdez, Edgar, Rojas, R.

“…In the present work, an untargeted metabolomic approach based on ultra-high-performance liquid chromatography coupled with high-resolution mass spectrometry (UHPLC–HRMS) was performed for the discrimination of 25 accessions of white quinoa from main production zones of Peru. …”
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HS-SPME Comparative Analysis of Genotypic Diversity in the Volatile Fraction and Aroma-Contributing Compounds of Capsicum Fruits from the annuum-chinense-frutescens Complex by Rodríguez-Burruezo, Adrian, Kollmannsberger, Hubert, González-Mas, María C., Nitz, Siegfried, Nuez, Fernando

“…Volatile constituents of ripe fruits of 16 Capsicum accessions from the annuum-chinense-frutescens complex, with different aroma impressions and geographical origins, were isolated by headspace-solid phase microextraction (HS-SPME) and analyzed by gas chromatography-olfactometry-mass spectrometry (GC-sniffing port-MS). More than 300 individual compounds could be detected in the studied genotypes; most of them could be identified by comparing mass spectra and retention times with authentic reference substances or literature data. …”
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Tryptophan-Dependent Production of Indole-3-Acetic Acid (IAA) Affects Level of Plant Growth Promotion by Bacillus amyloliquefaciens FZB42 by Idris, Elsorra E., Iglesias, Domingo J., Talón, Manuel, Borriss, Rainer

“…Analyses by high-performance liquid chromatography and gas chromatography-mass spectrometry performed with culture filtrates of FZB42 demonstrated the presence of indole-3-acetic acid (IAA), corroborating it as one of the pivotal plant-growth-promoting substances produced by this bacterium. …”
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The effect of non-host plant volatiles on the reproductive behaviour of the Egyptian cotton leafworm, Spodoptera littoralis by Hussain, Altaf

“…littoralis moths revealed three bio-active peaks in headspace collections from Av and five in Pa, which were subsequently identified through gas chromatography mass spectrometry (GCMS) by a combination of MS library searches, Kovats indices calculating, and matching the retention times with synthetic standards if available. …”

Behavioural response of alate Aphis craccivora Koch (Homoptera: Aphididae) to volatiles from different cowpea cultivars by Diabate, S., Deletre, E., Murungi, L.K., Fiaboe, K.K.M., Wesonga, J., Martin, T.

“…Behavioural assays were conducted to study host preference and gas chromatography‐mass spectrometry (GC/MS) for chemical analysis of volatiles. …”
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Exploring levels of egg parasitism and variation in egg cuticular chemistry in different Clavigralla spp. by Kpongbe, H., Berg, J. van den, Khamis, F., Tamò, Manuele, Talamas, E.J., Torto, B.

“…Chemical analysis by coupled gas chromatography/mass spectrometry (GC/MS) of cuticular extracts obtained from C. tomentosicollis and C. elongata eggs identified fifteen compounds including ten alkanes of which the amounts varied between the two species. …”
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Gut-expressed vitellogenin facilitates the movement of a plant virus across the midgut wall in its insect vector by He, Ya-Zhou, Wang, Yu-Meng, Yin, Tian-Yan, Cuéllar, Wilmer Jose, Liu, Shu-Sheng, Wang, Xiao-Wei

“…Here, in order to identify whitefly midgut proteins that interact with a devastating begomovirus, tomato yellow leaf curl virus (TYLCV), we performed midgut-specific TYLCV coat protein (CP) immunoprecipitation followed by high-throughput mass spectrometry proteomic analysis. We find that vitellogenin (Vg), a critical insect reproductive protein that has been considered to be synthesized by the fat body, is also synthesized by and interacts with TYLCV CP in the whitefly midgut. …”
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Dietary exposures to metals in relation to chronic kidney disease of unknown cause (CKDu) in Sri Lanka by Nyachoti, S., Godebo, T. R., Okwori, O. F., Jeuland, M. A., Manthrithilake, Herath

“…We measured the concentrations of nephrotoxic metals (As, Pb, and Cd), as well as Se in rice (a staple grain in Sri Lanka) and other grains consumed in CKDu endemic and non-endemic regions using Inductively Coupled Mass Spectrometry (ICP-MS). Our results showed comparable mean concentrations (in µg/kg) of 24.5±18, 7.3±6.4, and 14.2±15 for As, Pb, and Cd, respectively, in rice from endemic regions and 17.7±4.7, 12.7±6.8, and 17.8±16 in rice from non-endemic regions. …”
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Evaluating the performance of lateral flow devices for total aflatoxins with special emphasis on their robustness under sub-Saharan conditions by Cvak, B., Warth, B., Atehnkeng, J., Parich, A., Moritz, A., Sulyok, M., Krska, R.

“…In the presented study, lateral flow devices (LFDs) for rapid total aflatoxin screening were thoroughly investigated with respect to their matrix effects, cross-reactivity, their performance under harsh conditions in Sub-Saharan Africa (SSA), and their stability, as well as when compared with liquid chromatography-tandem mass spectrometry (LC-MS/MS). To analyze the matrix effects, qualitative test kits offering a certain cutoff level were used to screen different nut samples. …”
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Multiple Mycotoxins in Kenyan Rice by Mutiga, Samuel Kilonzo, Mutuku, J. Musembi, Koskei, Vincent, Gitau, James Kamau, Ng'ang'a, Fredrick M., Musyoka, Joyce, Chemining’wa, George N., Murori, Rosemary

“…Aflatoxin, citrinin, fumonisin, ochratoxin A, diacetoxyscirpenol, T2, HT2, and sterigmatocystin were analyzed using ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS). Deoxynivalenol was tested using enzyme-linked immunosorbent assay (ELISA). …”
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Comparative proteomic analysis of secretory proteins of Mycoplasma bovis and Mycoplasma mycoides subsp. mycoides investigates virulence and discovers important diagnostic biomarker... by Dawood, A.S., Zhao, G., He, Y., Lu, D., Wang, S., Zhang, H., Chen, Y., Hu, C., Chen, H., Schieck, Elise G., Guo, A.

“…The secretome was extracted from both species, and liquid chromatography-tandem mass spectrometry was used, which revealed 55 unique secreted proteins of M. bovis, 44 unique secreted proteins of Mmm, and 4 homologous proteins. …”
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Advances in analytical techniques for assessing volatile organic compounds in pulse crops: a comprehensive review by Makhlouf, Leila, El-Fakhouri, Karim, Kemal, Seid Ahmed, Aasfar, Abderrahim, Meftah Kadmiri, Issam, El Bouhssini, Mustapha

“…The identification of plant-emitted VOCs requires robust and sensitive analytical techniques such as gas chromatography and mass spectrometry, which are the mainly used techniques for in pulse crops studies. …”
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Meta-analysis of rice phosphoproteomics data to understand variation in cell signaling across the rice pan-genome by Ramsbottom, Kerry A., Prakash, Ananth, Perez-Riverol, Yasset, Camacho, Oscar Martin, Sun, Zhi, Kundu, Deepti J., Bowler-Barnett, Emily, Martin, Maria, Fan, Jun, Chebotarov, Dmytro, McNally, Kenneth L., Deutsch, Eric W., Vizcaíno, Juan Antonio, Jones, Andrew R.

“…In this study, we have reanalyzed publicly available mass spectrometry proteomics data sets enriched for phosphopeptides from Asian rice (Oryza sativa). …”
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Profiling of 2-Acetyl-1-Pyrroline and Other Volatile Compounds in Raw and Cooked Rice of Traditional and Improved Varieties of India by Kasote, Deepak, Singh, Vivek Kumar, Bollinedi, Haritha, Singh, Ashok Kumar, Sreenivasulu, Nese, Regina, Ahmed

“…Herein, optimized headspace solid phase microextraction with gas chromatography–tandem mass spectrometry (HS-SPME-GC-MS/MS) was used to estimate the 2-acetyl-1-pyrroline (2-AP) in raw and cooked rice samples of ten different traditional and improved varieties. …”
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Season affects yield and metabolic profiles of rice (Oryza sativa) under high night temperature stress in the field by Schaarschmidt, Stephanie, Lawas, Lovely Mae F., Glaubitz, Ulrike, Li, Xia, Erban, Alexander, Kopka, Joachim, Jagadish, Krishna S.V., Hincha, Dirk K., Zuther, Ellen

“…Metabolite composition was analysed by gas chromatography-mass spectrometry (GC-MS). HNT effects were more pronounced in panicles than in flag leaves. …”
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Metabolic responses of rice source and sink organs during recovery from combined drought and heat stress in the field by Lawas, Lovely Mae F., Erban, Alexander, Kopka, Joachim, Jagadish, Krishna S.V., Zuther, Ellen, Hincha, Dirk K.

“…Nevertheless, nothing is known about recovery mechanisms after drought and heat stress in rice under field conditions.ResultsWe have used gas chromatography–mass spectrometry–based metabolomics to elucidate the metabolic responses of flag leaves, flowering spikelets, and developing seeds from 3 rice cultivars differing in their drought and heat tolerance to rewatering after stress in the field. …”
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