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Production of rhamnolipids-producing enzymes of

Kata Kiss,Wei Ting Ng,Qingxin Li

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 1,   Pages 133-138 doi: 10.1007/s11705-017-1637-z

Abstract: Five proteins/enzymes, namely RhlA, RhlB, RhlC, RhlG and RhlI, are critical for the production of rhamnolipids

Keywords： rhamnolipids     Pseudomonas     RhlA     RhlB     RhlI     protein folding    

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Effect of a new antitranspirant on the physiology and water use efficiency of soybean under different irrigation rates in an arid region

Shasha JI, Ling TONG, Fusheng LI, Hongna LU, Sien LI, Taisheng DU, Youjie WU

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 155-164 doi: 10.15302/J-FASE-2017148

Abstract: Under the locally-used irrigation rate, applying FZ increased the activities of superoxide dismutase

Keywords： antitranspirant     soybean     water deficit     leaf gas exchange     enzymes activities     water consumption     seed yield    

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Estrogenic activities of di-2-ethylhexyl phthalate

JIN Qiumei, LI Yan, SUN Zengrong

Frontiers of Medicine 2008, Volume 2, Issue 3,   Pages 303-308 doi: 10.1007/s11684-008-0058-2

Abstract: Estrogenic activities of DEHP were studied by assays of human breast cancer MCF-7 cell proliferation
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Expression profiles of genes and enzymes related to ascorbic acid metabolism in fruits of

Yingying CHEN,Zhihui ZHAO,Jin ZHAO,Mengjun LIU

Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 2,   Pages 131-136 doi: 10.15302/J-FASE-2016096

Abstract: accumulation of AsA, the expression patterns of the nine genes related to AsA metabolism as well as the activitiesof five enzymes involved in AsA synthesis, oxidation and recycling were investigated during fruit developmentlactone dehydrogenase, ascorbate peroxidase and monodehydro-ascorbate reductase are the crucial genes/enzymes

Keywords： Chinese jujube     ascorbic acid     metabolism     gene     enzyme    

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Microbial biodegradation of plastics: Challenges, opportunities, and a critical perspective

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1596-6

Abstract:

● Health hazards of plastic waste on environment are discussed.

Keywords： Plastic-waste     Polymers     Health-hazards     Biodegradation     Microorganisms     Enzymes    

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Biodegradation and detoxification of the triphenylmethane dye coomassie brilliant blue by the extracellular enzymes

Jin Zhao, Qing-Xi Wu, Xiao-Du Cheng, Ting Su, Xiao-Hui Wang, Wen-Na Zhang, Yong-Ming Lu, Yan Chen

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 421-436 doi: 10.1007/s11705-020-1952-7

Abstract: Fungi play an important role in dying wastewater treatment. In this work, the mycelia of exhibited an excellent capacity in decolorizing coomassie brilliant blue (CBB). The results demonstrated that the mycelia could treat CBB with high concentrations over a broad range of pH and temperature. The decolorization rate of 99.19% and the removal rate of 16.31 mg·L ·h were realized. The mycelia could be recycled from decolorizing process for 19 times, indicating a good re-usability. It verified that the lignin peroxidase (121.65 U·L ) and manganese peroxidase (36.77 U·L ) were involved in the degradation and decolorization process of CBB. Toxicity assessments indicated the seed germination rate was up to 82.22% while inhibition to decreased dramatically and no significant effect on growth was found. The removal of CBB was a synergistic process accomplished by adsorption and biodegradation. The mycelia could be used for eco-friendly CBB treatment.

Keywords： fungus mycelia     biodegradation     extracellular enzymes     coomassie brilliant blue     Lactarius deliciosus<    

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Synthesis, insecticidal activities and DFT study of pyrimidin-4-amine derivatives containing the 1,2,4

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1090-1100 doi: 10.1007/s11705-021-2091-5

Abstract: Twenty six novel pyrimidin-4-amine derivatives containing the 1,2,4-oxadiazole motif were synthesized. Their chemical structures were confirmed by 1H nuclear magnetic resonance (NMR), 13C NMR, and high-resolution mass spectrography. The insecticidal activity results indicated that some of them possessed excellent insecticidal activity (100%) against Mythimna separate, especially for compounds 6d, 6f, 6o, 6w, 6y and 6z. These compounds exhibited no activity against the insects Aphis medicagini and Tetranychus cinnabarinus. The structure- insecticidal activity relationships are discussed. Density functional theory analysis can potentially be used to design more active compounds. These results provide useful insecticide design information for further optimization.

Keywords： synthesis     pyrimidin-4-amine derivatives     1     2     4-oxadiazole     insecticidal activity     structure-activity relationship    

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Achievements and development ofChina’s space activities

Wang Liheng

Strategic Study of CAE 2008, Volume 10, Issue 12,   Pages 10-12

Abstract: style="text-align: justify;">This paper describes the current situation of the international space activitiesworld and their characteristics, briefly introduces the brilliant achievements of China's space activities, and gives a full prospect for the future development of China's space activities.

Keywords： China’s space activities     new space programs     achievements of China’s space activities    

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A comparison of the biological activities of ethyl acetate fractions from the stems and leaves of

Zhaolei WANG, Kai JIANG, Qinchao DING, Shujun LIU, Xiaobing DOU, Bin DING

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 4,   Pages 505-512 doi: 10.15302/J-FASE-2019271

Abstract:

Pursh (PCP) is a popular traditional medicinal plant in China, widely used for the treatment of a variety of liver diseases. Although it has been long recognized that the main active elements of PCP are contained in ethyl acetate fraction (EAF), little is known so far in terms of the relative effectiveness of EAF derived from the stems versus leaves of this plant. In the current study, we prepared EAF by reflux extraction and sequential extraction from the stems (SEAF) and leaves (LEAF) of PCP and tested their hepatoprotective efficacies. The extract rates and flavonoid contents of LEAF were higher than those of SEAF. EAFs (>50 μg·mL ) prevented lipid accumulation in cells and protected against lipotoxicity injury when the concentration exceeded 25 μg·mL . More than 95% free radicals released by 2,2-diphenyl-1-picrylhydrazyl (DPPH) were eliminated by 25 μg·mL SEAF and 50 μg·mL LEAF, respectively. Further, EAFs (25 μg·mL ) also showed protective antioxidant effects, with the activity of LEAF being significantly higher than that of SEAF. EAFs (10 mg·mL ) also showed similar unspecific bacteriostatic activity. In comparison with SEAF, LEAF contained more flavonoids and had a higher anti-oxidation capability and for these reasons we suggest it should be better for clinical use.

Keywords： antibacterial     anti-oxidation     lipid accumulation     lipotoxicity     Penthorum chinense Pursh    

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On the New Thought Concerning Water-related Human Activities

Li Peicheng

Strategic Study of CAE 2000, Volume 2, Issue 2,   Pages 5-9

Abstract: experience and looking for the future, the author advances some new thought on water-related human activitiescentury, and cites enormous cases and data to testify them and holds that in the water-related human activitiesin the 21st century, the relationships among human activities, water-body dynamic states, ecologicaland other productive activities upon water-body dynamics as well as the inverse actions.In the future water-related human activities, the human beings should adapt to and take advantage of

Keywords： water-related activities     water-saving     water protection     new thought    

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Development Strategy and Key Areas of China5 s Space Activities

Sun Laiyan

Strategic Study of CAE 2006, Volume 8, Issue 10,   Pages 6-12

Abstract: experiences and problems, and, against the backdrop of the developing trend of international space activities

Keywords： China's space activities     development strategy     key areas    

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Soil enzyme activities and their indication for fertility of urban forest soil

SHAN Qihua, YU Yuanchun, ZHANG Jinchi, YU Jian

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2,   Pages 218-223 doi: 10.1007/s11783-008-0037-5

Abstract: soil enzyme on soil fertility as well as the correlation between physicochemical properties and enzyme activitiesBasic soil physicochemical properties and enzyme activities were analyzed in the laboratory.total nitrogen (N) had great effects on hydrogen peroxidase, dehydrogenase, and alkaline phosphatase activitiesHowever, pH only had great effect on hydrogen peroxidase, dehydrogenase, and alkaline phosphatase activitiesThe more soil enzyme activities there were, the higher the fertility of urban forest soil.
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Beneficial metabolic activities of inflammatory cytokine interleukin 15 in obesity and type 2 diabetes

Jianping Ye

Frontiers of Medicine 2015, Volume 9, Issue 2,   Pages 139-145 doi: 10.1007/s11684-015-0377-z

Abstract:

In obesity, chronic inflammation is believed to induce insulin resistance and impairs adipose tissue function. Although this view is supported by a large body of literature, it has been challenged by growing evidence that pro-inflammatory cytokines may favor insulin sensitivity through induction of energy expenditure. In this review article, interleukin 15 (IL-15) is used as a new example to explain the beneficial effects of the pro-inflammatory cytokines. IL-15 is secreted by multiple types of cells including macrophages, neutrophils and skeletal muscle cells. IL-15 expression is induced in immune cells by endotoxin and in muscle cells by physical exercise. Its transcription is induced by transcription factor NF-κB. IL-15 binds to its receptor that contains three different subunits (α, β and γ) to activate JAK/STAT, PI3K/Akt, IKK/NF-κB and JNK/AP1 pathways in cells. In the regulation of metabolism, IL-15 reduces weight gain without inhibiting food intake in rodents. IL-15 suppresses lipogenesis, stimulates brown fat function, improves insulin sensitivity through weight loss and energy expenditure. In human, circulating IL-15 is negatively associated with body weight. In the immune system, IL-15 stimulates proliferation and differentiation of T cells, NK cells, monocytes and neutrophils. In the anti-obesity effects of IL-15, T cells and NK cells are not required, but leptin receptor is required. In summary, evidence from human and rodents supports that the pro-inflammatory cytokine IL-15 may enhance energy expenditure to protect the body from obesity and type 2 diabetes. The mechanism of IL-15 action remains to be fully uncovered in the regulation of energy expenditure.

Keywords： inflammation     obesity     cytokine     energy expenditure     insulin resistance    

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Antioxidant and antitumor effects and immunomodulatory activities of crude and purified polyphenol extract

Xiaohong Kou,Lihua Han,Xingyuan Li,Zhaohui Xue,Fengjuan Zhou

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1,   Pages 108-119 doi: 10.1007/s11705-016-1553-7

Abstract: The antioxidant and antitumor effects as well as the immunomodulatory activities of crude and purifiedassays demonstrated that blueberry purified polyphenol extract (BBPP) exhibited higher antioxidant activitiesThese results indicate that BBCP has significant antioxidant and antitumor activities and that it can

Keywords： crude polyphenol extract     purified polyphenol extract     blueberry     antioxidant     antitumor     immunity    

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and mechanism insight on SiC quantum dots sensitized inverse opal TiO with superior photocatalytic activities

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1913-1924 doi: 10.1007/s11705-023-2350-8

Abstract: The combination of SiC quantum dots sensitized inverse opal TiO2 photocatalyst is designed in this work and then applied in wastewater purification under simulated sunlight. From various spectroscopic techniques, it is found that electrons transfer directionally from SiC quantum dots to inverse opal TiO2, and the energy difference between their conduction/valence bands can reduce the recombination rate of photogenerated carriers and provide a pathway with low interfacial resistance for charge transfer inside the composite. As a result, a typical type-II mechanism is proved to dominate the photoinduced charge transfer process. Meanwhile, the composite achieves excellent photocatalytic performances (the highest apparent kinetic constant of 0.037 min–1), which is 6.2 times (0.006 min–1) and 2.1 times (0.018 min–1) of the bare inverse opal TiO2 and commercial P25 photocatalysts. Therefore, the stability and non-toxicity of SiC quantum dots sensitized inverse opal TiO2 composite enables it with great potential in practical photocatalytic applications.

Keywords： inverse opal TiO2     silicon carbide quantum dots     quantum dot sensitized photocatalyst     type-II charge transfer route    

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Title Author Date Type Operation

Production of rhamnolipids-producing enzymes of

Kata Kiss,Wei Ting Ng,Qingxin Li

Journal Article

Effect of a new antitranspirant on the physiology and water use efficiency of soybean under different irrigation rates in an arid region

Shasha JI, Ling TONG, Fusheng LI, Hongna LU, Sien LI, Taisheng DU, Youjie WU

Journal Article

Estrogenic activities of di-2-ethylhexyl phthalate

JIN Qiumei, LI Yan, SUN Zengrong

Journal Article

Expression profiles of genes and enzymes related to ascorbic acid metabolism in fruits of

Yingying CHEN,Zhihui ZHAO,Jin ZHAO,Mengjun LIU

Journal Article

Microbial biodegradation of plastics: Challenges, opportunities, and a critical perspective

Journal Article

Biodegradation and detoxification of the triphenylmethane dye coomassie brilliant blue by the extracellular enzymes

Jin Zhao, Qing-Xi Wu, Xiao-Du Cheng, Ting Su, Xiao-Hui Wang, Wen-Na Zhang, Yong-Ming Lu, Yan Chen

Journal Article

Synthesis, insecticidal activities and DFT study of pyrimidin-4-amine derivatives containing the 1,2,4

Journal Article

Achievements and development ofChina’s space activities

Wang Liheng

Journal Article

A comparison of the biological activities of ethyl acetate fractions from the stems and leaves of

Zhaolei WANG, Kai JIANG, Qinchao DING, Shujun LIU, Xiaobing DOU, Bin DING

Journal Article

On the New Thought Concerning Water-related Human Activities

Li Peicheng

Journal Article

Development Strategy and Key Areas of China5 s Space Activities

Sun Laiyan

Journal Article

Soil enzyme activities and their indication for fertility of urban forest soil

SHAN Qihua, YU Yuanchun, ZHANG Jinchi, YU Jian

Journal Article

Beneficial metabolic activities of inflammatory cytokine interleukin 15 in obesity and type 2 diabetes

Jianping Ye

Journal Article

Antioxidant and antitumor effects and immunomodulatory activities of crude and purified polyphenol extract

Xiaohong Kou,Lihua Han,Xingyuan Li,Zhaohui Xue,Fengjuan Zhou

Journal Article

and mechanism insight on SiC quantum dots sensitized inverse opal TiO with superior photocatalytic activities

Journal Article