4篇
您的检索式：作者名="Hongjun CHU"
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| 1 | Screening and evaluation of antioxidants from lees by micro-injector systems combined with a fluorescent probe,N-borylbenzyloxycarbonyl-3,7-dihydroxyphenoxazine,in living Drosophila显示文摘Over the past few decades, the determination of antioxidant activity by chemical probe has been widely reported, but in vivo evaluation via model organisms of Drosophila melanogaster and rapid discovery system has not been studied adequately. In this study, we determined the antioxidant activity of lees and demonstrated the ability of compounds in lees to scavenge H_2O_2 in vitro and in vivo by different chemical probes. Lees increased the ability of Drosophila against oxidative stress and antioxidant enzyme activity in vivo. Five ingredients of organic acids and flavones in lees extract that rapidly scavenged H_2O_2 were revealed by a post-column-derived HPLC-UV-FLD system based on 4-hydroxyphenylacetic acid(PHPAA)chemiluminescence. Additionally, another fluorescent probe,N-borylbenzyloxycarbonyl-3,7-dihydroxyphenoxazine(NBCD), was selected to evaluate the reactive oxygen species(ROS) scavenging capacity of lees in living Drosophila melanogaster using a microfluidic injection test coupled with microscopic imaging analysis, and similar effects were observed in flies when they were treated with tartaric acid and caffeic acid. The results demonstrated that the novel integrated system was suitable for screening and evaluating antioxidant ingredients from natural products. | Guangcui Chu Dandan Cheng Wenjuan Liu Xuefeng Wang Xiaotao Hou Yuanyuan Hou Hongjun Wei Jiagang Deng Gang Bai | 2018 | Chinese Chemical Letters2018，29，10： | 2 |
| 2 | Distribution and conservation of Sino-Mongolian beaver,Castor fiber Birulai显示文摘 | CHU Hongjun JIANG Zhigang | | 0，，： | 1 |
| 3 | Analysis on the relationship between winter precipitation and the annual variation of horse stomach fly community in arid desert steppe, Northwest China (2007–2019)显示文摘Gasterophilus spp.have been found to be widespread in reintroduced Przewalski’s horses in the Kalamaili Nature Reserve(Northwest China).However,data on the annual variation in Gasterophilus infections are lacking.To analyze the epidemiological features and determine the cause of the annual variation in Gasterophilus infections,we treated 110 Przewalski’s horses with ivermectin and collected Gasterophilus larvae from fecal samples each winter from 2007 to 2019.All 110 Przewalski’s horses studied were found to be infected by Gasterophilus spp.,and a total of 141379 larvae were collected.Six species of Gasterophilus were identified with the following prevalence:G.pecorum(100%),G.nasalis(96.36%),G.nigricornis(94.55%),G.haemorrhoidalis(56.36%),G.intestinalis(59.09%),and G.inermis(3.64%).The mean infection intensity of Gasterophilus spp.larvae in Przewalski’s horses was 1285±653.G.pecorum(92.96%±6.71%)was the most abundant species.The intensity of Gasterophilus spp.(r=–0.561,P<0.046)was significantly correlated with winter precipitation.Our findings confirmed that,in the Kalamaili Nature Reserve,gasterophilosis is a severe parasitic disease in Przewalski’s horses.Winter precipitation at the beginning of the year can indirectly affect the intensity and composition of Gasterophilus spp.in Przewalski’s horses at the end of the year.Therefore,the water-related ecological regulation should be carried out to help reduce the parasite infection of Przewalski’s horses. | Heqing HUANG Ke ZHANG Boru ZHANG Shanhui LIU Hongjun CHU Yingjie QI Dong ZHANG Kai LI | 2022 | Integrative Zoology2022，17，1： | 1 |
| 4 | The influence of different monodentate P-ligand mixtures on Rh-catalyzed 1-butene hydroformylation显示文摘Four monodentate P-ligands and their mixtures(six groups of double-ligand systems,four groups of triple-ligand systems and one group of tetra-ligand system)were used with Rh(acac)(CO)_2(acac=acetylacetonate)or Rh(acac)CO(PPh_3)as the catalyst in the hydroformylation reaction of 1-butene.It was found that different Rh catalysts showed little difference in the catalysis performance.The general order of catalysis performance is doubleligand system N single-ligand system N triple-ligand system N tetra-ligand system.Some synergistic effect in the double-ligand system was detected which needs a further investigation. | Weili Jiang Jinxin Chu Jie Yang Pengyu Zang Lijie Gao Guanglin Zhou Hongjun Zhou Huibo Wei | 2018 | Chinese Journal of Chemical Engineering2018，26，9： | 1 |
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