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Kupalov D. S. Baryshev V. N. Blinov I. Yu. Boiko A. I. Domnin Yu. S. Ivanchenko E. V. 《Measurement Techniques》2022,64(10):817-823
Measurement Techniques - The structure, principle of operation, and metrological performance of the rubidium atomic fountain developed at VNIIFTRI are presented. The aim of the present work is to... 相似文献
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Junjie Fu Chaolan Liu Li Li Jun Liu Yu Tie Xueping Wen Qikai Zhao Zongwei Qiao Zheming An Jia Zheng 《International Journal of Food Science & Technology》2022,57(5):2918-2931
Weak acids inhibit the growth of probiotics, such as Saccharomyces boulardii. We explored the tolerance of S. boulardii to different weak acids. S. boulardii had better fermentation ability under lactic acid conditions compared with acetic and butyric acid conditions; however, the budding of S. boulardii was significantly stronger than that of Saccharomyces cerevisiae under acetic acid conditions. Although the surface structure of S. boulardii was destroyed, it produced more daughter cells. S. boulardii metabolites were also significantly different from S. cerevisiae under acidic stress. The growth of S. boulardii under weak acid conditions differed significantly from that of S. cerevisiae. S. boulardii-mediated fingerprints under weak acid conditions were identified as latent biomarkers, related to fructose and mannose metabolism, tricarboxylic acid cycle, and the glycolysis pathway. Identified biomarkers will aid in the genetic engineering of S. boulardii and other Saccharomyces strains for improved acid resistance and biomass yield. 相似文献
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Yaoying Zeng Qian Yu Shujun Cheng 《International Journal of Food Science & Technology》2022,57(4):2203-2215
Bacillus velezensis zk1 is the dominant bacterium that causing rot in peaches. However, the mechanisms through that this bacterium causes rot have not been elucidated. Here, we explored the mechanisms of peach decay caused by B. velezensis zk1. The invasion of B. velezensis zk1 in peaches resulted in an increase in glucose and arabinose contents in fruit tissues. Moreover, the relative conductivity of the fruit reached 84% after 4 days of culture with bacterial invasion. With the destruction of cells, the malondialdehyde content increased, whereas the vitamin C, dialdehyde, flavonoid and total phenol contents decreased. Polyphenol oxidase, superoxide dismutase, catalase, peroxidase, ascorbate peroxidase and ammonia lyase activities also decreased. Overall, these findings demonstrated that B. velezensis zk1 infection damaged peach chloroplasts, mitochondria, respiratory chain activity and related free radical scavenging enzyme systems, thereby disrupting the normal physiological metabolism of peaches and causing rot. 相似文献
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Zinov’eva I. V. Kozhevnikova A. V. Milevskii N. A. Zakhodyaeva Yu. A. Voshkin A. A. 《Theoretical Foundations of Chemical Engineering》2022,56(2):221-229
Theoretical Foundations of Chemical Engineering - A new hydrophobic deep eutectic solvent (HDES) based on di(2-ethylhexyl)phosphoric acid and menthol has been proposed for the extraction of... 相似文献
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Wei Zhonglin Dong Donglin Ji Yuan Ding Jia Yu Lujia 《Mine Water and the Environment》2022,41(4):1106-1117
Mine Water and the Environment - Accurate and timely identification of water inrush sources is important in controlling mine water hazards. We combined various algorithms to offer an improved... 相似文献