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679 results on '"Zhang, Jun-hui"'

11. Protective effect of Lyophyllum ulmarium fibrolytic enzyme on liver injury induced in hyperlipidemia rats

Author

LI Yu, SU Xin, ZHANG Jun-hui, ZHANG Rui-meng, and SHEN Ming-hua

Subjects
lyophyllum ulmarium, fibrinolytic enzyme, hyperlipidemia, liver injury, inflammation, Food processing and manufacture, TP368-456
Abstract

Objective: To investigate the protective effect and mechanism of Lyophyllum ulmarium fibrinolytic enzyme （LUFE） on rats with hyperlipidemia. Methods: Hyperlipidemia models were established by feeding with a high-fat diet, and the model rats were gavaged with different doses of LUFE. HE stain was used to analyze the morphological changes of liver.The biochemical indexes of rat plasma were detected by colorimetric method.WB analyses the expression level of related proteins. Results: LUFE could alleviate the liver tissue injury of hyperlipidemia rats and reduce the plasma lipid level and IL-6, TNF-α，MCP-1，ALT，AST. LUFE can down regulate TLR4，MyD88，phosphorylated PI3K，phosphorylated Akt and phosphorylated NF-кB protein level. Conclusion: LUFE protects against hyperlipidemia-induced liver injury in rats by regulating PI3K/Akt/NF-кB and TLR4/MyD88/NF-кB signaling pathways.

Published
2023
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25. Room temperature synthesis of a chiral covalent organic framework core‐shell composite for high‐performance liquid chromatography enantioseparation.

Author

Zhang, Yue, Lu, Yan‐Rui, Liu, Cheng, Ma, An‐Xu, Luo, Zong‐Hong, Zhou, Hong‐Mei, Zhang, Jun‐Hui, Wang, Bang‐Jin, Xie, Sheng‐Ming, and Yuan, Li‐Ming

Subjects
ASYMMETRIC synthesis, CHIRAL recognition, LIQUID chromatography, STANDARD deviations, RACEMIC mixtures, CHIRAL stationary phases
Abstract

In this article, chiral covalent organic framework core‐shell composite CCOF‐TpPa‐Py@SiO2 was facilely synthesized by induction at room temperature. The CCOF‐TpPa‐Py@SiO2 core‐shell composite was used as a chiral stationary phase for the separation of the racemates by high‐performance liquid chromatography, which exhibits good separation performance for chiral compounds including ketones, alcohols, esters, epoxides, carboxylic acids, amides, and amines. The effects of analyte injection mass on the enantioseparation were studied. The reproducibility and stability of the CCOF‐TpPa‐Py@SiO2 chiral column were explored. The intra‐day (n = 5), inter‐day (n = 5), and inter‐column (n = 3) relative standard deviations for the migration times and resolution of benzoin were 0.32%–0.54%, 0.45%–0.61%, and 1.21%–1.53%, respectively. In addition, the chiral separation ability of the CCOF‐TpPa‐Py@SiO2 chiral column (column A) was compared with that of the MDI‐β‐CD‐Modified COF@SiO2 (column B) as well as a commercial chiral column (Chiralpak AD‐H). The chiral recognition ability of column A is complementary to that of column B and AD‐H column. The resolution mechanism of CCOF‐TpPa‐Py@SiO2 stationary phase towards chiral analyte was explored. Hence, the synthesis of CCOF‐TpPa‐Py@SiO2 core‐shell composite by induction at room temperature as chiral stationary phases for chromatographic separation has important research potential and application prospects. [ABSTRACT FROM AUTHOR]

Published
2024
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26. Asymmetric catalytic synthesis of chiral covalent organic framework composite (S)-DTP-COF@SiO2 for HPLC enantioseparations by normal-phase and reversed-phase chromatographic modes.

Author

Zhou, Hong-Mei, Liu, Cheng, Zhang, Yue, Ma, An-Xu, Luo, Zong-Hong, Zhu, Yu-Lan, Ran, Xiao-Yan, Xie, Sheng-Ming, Wang, Bang-Jin, Zhang, Jun-Hui, and Yuan, Li-Ming

Subjects
RACEMIC mixtures, ASYMMETRIC synthesis, RF values (Chromatography), COMPOSITE materials, EPOXY compounds
Abstract

A novel CCOF core–shell composite material (S)-DTP-COF@SiO2 was prepared via asymmetric catalytic and in situ growth strategy. The prepared (S)-DTP-COF@SiO2 was utilized as separation medium for HPLC enantioseparation using normal-phase and reversed-phase chromatographic modes, which displays excellent chiral separation performance for alcohols, esters, ketones, and epoxides, etc. Compared with chiral commercial chromatographic columns (Chiralpak AD-H and Chiralcel OD-H columns) and some previously reported chiral CCOF@SiO2 (CC-MP CCTF@SiO2 and MDI-β-CD-modified COF@SiO2)-packed columns, there are 4, 3, 13, and 15 tested racemic compounds that could not be resolved on the Chiralpak AD-H column, Chiralcel OD-H column, CC-MP CCTF@SiO2 column, and MDI-β-CD-modified COF@SiO2 column, respectively, which indicates that the resolution effect of (S)-DTP-COF@SiO2-packed column can be complementary to the other ones. The effects of the analyte mass, column temperature, and mobile phase composition on the enantiomeric separation were investigated. The chiral column exhibits good reproducibility after multiple consecutive injections. The RSDs (n = 5) of the peak area and retention time were less than 1.5% for repetitive separation of 2-methoxy-2-phenylethanol and 1-phenyl-1-pentanol. The chiral core–shell composite (S)-DTP-COF@SiO2 exhibited good enantiomeric separation performance, which not only demonstrates its potential as a novel CSP material in HPLC but also expands the range of applications for chiral COFs. [ABSTRACT FROM AUTHOR]

Published
2024
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39. Monitoring rice fertilization by remote sensing technology- application of unmanned aerial vehicle in improving rice taste quality

Author

ZHOU Tao, ZHANG Yu-ping, YANG Ying-qing, and ZHANG Jun-hui

Subjects
rice taste, protein content, fertility diagnosis, rice leaf nitrogen analyzer, unmanned aerial vehicle, Food processing and manufacture, TP368-456, Nutrition. Foods and food supply, TX341-641
Abstract

Indica rice Zhongzheyou 1 and indica hybrid rice cultivar Yongyou 538 were used as materials.Through non-destructive monitoring by rice leaf nitrogen analyzer CCN6001 and the acquisition of NDVI value by unmanned aerial vehicle, precise application of ear fertilizer was realized according to nitrogen content of rice leaf.The improvement of rice taste quality provides new technology for rice quality improvement and efficiency enhancement, and provides a new method for development of intelligent agriculture.

Published
2019
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44. A novel pillar[3]trianglimine macrocycle with a deep cavity used as a chiral selector to prepare a chiral stationary phase by thiol‐ene click reaction for enantioseparation in high‐performance liquid chromatography

Author

Liang, Rui‐Xue, primary, Ma, Qi‐Yu, additional, Xiang, Tuan‐Xiu, additional, Zhang, You‐Ping, additional, Gong, Ya‐Nan, additional, Huang, Bin, additional, Wang, Bang‐Jin, additional, Xie, Sheng‐Ming, additional, Zhang, Jun‐Hui, additional, and Yuan, Li‐Ming, additional

Published
2023
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