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131.
132.
Abdi Wira Septama Monika Arvia Chiara Gabriel Turnip Aprilia Nur Tasfiyati Rizna Triana Dewi Erlia Anggrainy Sianipar Amit Jaisi 《化学与生物多样性》2023,20(6):e202201205
Pseudomonas aeruginosa can regulate its pathogenicity via quorum sensing (QS) system. Zingiber cassumunar and Z. officinale have been used for the treatment of infectious diseases. The study aimed to evaluate and compare the chemical constituents, antibacterial, and QS inhibitor of Z. cassumunar essential oils (ZCEO) and Z. officinale essential oils (ZOEO). The chemical constituent was analysed using GC/MS. Broth microdilution and spectrophotometry analysis were used to evaluate their antibacterial and QS inhibitor activities. The main constituent of ZOEO with percent composition above 6 % (α-curcumene, α-zingiberene, β-sesquiphellandrene, and β-bisabolene, α-citral, and α-farnesene) were exist in a very minimal percentage less than 0.7 % in Z. cassumunar. All major components of ZCEO with percentages higher than 5 % (terpinen-4-ol, sabinene, γ-terpinene) were present in low proportion (<1.18 %) in Z. officinale. ZCEO demonstrated moderate antibacterial activity against P. aeruginosa. The combination of ZCEO and tetracycline showed a synergistic effect (FICI of 0.5). ZCEO exhibited strong activity in inhibiting biofilm formation. ZCEO at MIC (62.5 μg/mL) was able to reduce pyoverdine, pyocyanin, and proteolytic activity. This is the first report on the activity of ZCEO in the inhibition of P. aeruginosa QS system and it may be used to control the pathogenicity of P. aeruginosa. 相似文献
133.
Christoph Berg Selma Busch Muthia Dewi Alawiyah Maurice Finger Nina Ihling Olivier Paquet-Durand Bernd Hitzmann Jochen Büchs 《Biotechnology and bioengineering》2023,120(10):2925-2939
Online fluorescence monitoring has become a key technology in modern bioprocess development, as it provides in-depth process knowledge at comparably low costs. In particular, the technology is widely established for high-throughput microbioreactor cultivation systems, due to its noninvasive character. For microtiter plates, previously also multi-wavelength 2D fluorescence monitoring was developed. To overcome an observed limitation of fluorescence sensitivity, this study presents a modified spectroscopic setup, including a tunable emission monochromator. The new optical component enables the separation of the scattered and fluorescent light measurements, which allows for the adjustment of integration times of the charge-coupled device detector. The resulting increased fluorescence sensitivity positively affected the performance of principal component analysis for spectral data of Escherichia coli batch cultivation experiments with varying sorbitol concentration supplementation. In direct comparison with spectral data recorded at short integration times, more biologically consistent signal dynamics were calculated. Furthermore, during partial least square regression for E. coli cultivation experiments with varying glucose concentrations, improved modeling performance was observed. Especially, for the growth-uncoupled acetate concentration, a considerable improvement of the root-mean-square error from 0.25 to 0.17 g/L was achieved. In conclusion, the modified setup represents another important step in advancing 2D fluorescence monitoring in microtiter plates. 相似文献
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135.
Kazemeini Fatemeh Asri Younes Mostafavi Golaleh Kalvandi Ramezan Mehregan Iraj 《Molecular biology reports》2020,47(12):9345-9352
Molecular Biology Reports - Rhabosciadium aucheri is an Iranian endemic herbaceous species that grows in the west, center, and south regions of Iran. In the present study, genetic variation of 70... 相似文献
136.
Dewi Davies 《CMAJ》1963,89(9):392-395
Aspergilli are widely distributed in nature and there is abundant opportunity to acquire infection. The fungus is usually only locally invasive in healthy tissues. Its culture from sputum on one occasion may have no significance. Its growth in the bronchial tree of asthmatics may produce sensitization with aggravation of the asthma and bronchial plugging. Multiplication in dead or damaged lung tissue such as infarcts is not uncommon. The fungus may also colonize pre-existing lung cavities, especially those remaining after treatment of tuberculosis. The ball of fungus produces a characteristic radiological picture, particularly on tomograms, which is usually sufficient to make the diagnosis. Hemoptysis is common. Inaction may be preferable to excision, especially in a patient with impaired lung function. Seven cases have been described to illustrate some of the features and natural history of the condition. The mounting number of sterile cavities left in lungs has increased the number of mycetomas which have developed. 相似文献
137.
The halophilous vegetation of the Orumieh lake salt marshes has been studied, using the Braun-Blanquet method. Vegetation types have been defined by physiognomic-floristic system. The following six main groups of communities are recognized: (1) Semi-woody shrub and perennial halophytic communities (Class Halocnemetea strobilacei) including 6 associations and 5 subassociations, (2) Annual halophytic communities (Class Thero-Salicornietea) including 5 associations and 1 subassociation, (3) Salt marsh brushwood communities (Class Tamaricetea) including 4 associations, (4) Rush and herbaceous perennial halophytic communities (Class Juncetea maritimi) including 7 associations and 1 subassociation, (5) Rush and herbaceous perennial halotolerant communities (Class Agrostietea stoloniferae) including 5 associations, (6) Hydrophilous halotolerant communities (Class Phragmitetea) including 3 associations and 2 subassociations. The soil of these communities has been analysed and their habitats are described and discussed. 相似文献
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139.
Saifuddin Farah Husna Arzaee Nurul Affiqah Noh Mohamad Firdaus Mohamad Bakar Mimi Hani Abu Teridi Mohd Asri Mat Takriff Mohd Sobri Ibrahim Mohd Adib 《Journal of applied phycology》2022,34(5):2423-2436
Journal of Applied Phycology - Sodium bicarbonate (NaHCO3) is a low-cost inorganic carbon source, highly soluble in water and widely used in microalgae research. Using carbon dioxide (CO2) gas in... 相似文献