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Effect of polyethylene glycol on the crystallization, rheology and foamability of poly(lactic acid) containing

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2074-2087 doi: 10.1007/s11705-023-2342-8

Abstract: In this study, the rheological properties, crystallization and foaming behavior of poly(lactic acid)that the polyamide 6 nanofibrils and polyethylene glycol had a synergistic effect on accelerating poly(lacticacid) crystallization.Furthermore, the poly(lactic acid)/polyamide 6 foams exhibited a higher cell density and expansion ratio

Keywords： poly(lactic acid)     foaming     microfibrillation     rheological property     crystallization    

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Use of dry yeast cells as a cheap nitrogen source for lactic acid production by thermophilic

Kim Yng Ooi, Jin Chuan Wu

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3,   Pages 381-385 doi: 10.1007/s11705-015-1534-2

Abstract: acid production by thermophilic .Cassava starch (200 g·L ) was converted to L-lactic acid by simultaneous saccharification and fermentationusing WCP10-4 at 50 °C in the presence of 20 g·L of DYC, giving 148.1 g·L of L-lactic acid at 27In contrast, 154.4 g·L of lactic acid was produced at 24 h with a productivity of 6.4 g·L ·h and aUse of pre-autolyzed DYC at 50 °C for overnight slightly improved the lactic acid titer (154.5 g·L )

Keywords： L-lactic acid     thermophilic strain     Bacillus coagulans     dry yeast cells     autolysis     fermentation    

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Clean production of lactic acid by selective carbon-carbon bond cleavage of biomass feedstock over a

Frontiers of Chemical Science and Engineering 2024, Volume 18, Issue 2, doi: 10.1007/s11705-023-2380-2

Abstract: bond cleavage of biomass-based feedstocks photocatalyzed by C/BiOCl-180, the xylose conversion and lacticacid yield were 100% and 92.5%, respectively.C/BiOCl-180 efficiently converted different biomass-based monosaccharides to lactic acid, and the efficiencyMoreover, lactic acid synthesis was favored by all active radicals including superoxide ion (·O2The use of biomass-derived monosaccharides for the clean production of lactic acid via the C/BiOCl-180

Keywords： carbon-carbon bond cleavage     biomass reforming     C/BiOCl     lactic acid     photocatalysis    

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Roles of acid-producing bacteria in anaerobic digestion of waste activated sludge

Sijia Ai, Hongyu Liu, Mengjie Wu, Guangming Zeng, Chunping Yang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1050-y

Abstract:

Three acid-producing strains were isolated and identified.

The isolated bacteria accelerated the anaerobic

Keywords： Anaerobic digestion     Waste activated sludge     Acid-producing bacteria     Bacillus coagulans    

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Acid resistance of methanogenic bacteria in a two-stage anaerobic process treating high concentration

ZHOU Xuefei, REN Nanqi

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 53-56 doi: 10.1007/s11783-007-0010-8

Abstract: The acid resistance of granular sludge and methanogenic bacteria and their metabolizing activity wereApparently, these were not the advisable pH levels that common methanogenic bacteria could accept.The methanogenic bacteria of the system, viz.Methanosarcina barkeri, had some acid resistance and could still degrade methanol at pH 5.0.If the methanogenic bacteria were trained further, their acid resistance would be improved somewhat.

Keywords： pH     Granular     upflow anaerobic     advisable pH     methanogenic    

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Polymeric micelle nanocarriers in cancer research

Dae Hwan Shin, Yu Tong Tam, Glen S. Kwon

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3,   Pages 348-359 doi: 10.1007/s11705-016-1582-2

Abstract: Amphiphilic block copolymers (ABCs) assemble into a spherical nanoscopic supramolecular core/shell nanostructure termed a polymeric micelle that has been widely researched as an injectable nanocarrier for poorly water-soluble anticancer agents. The aim of this review article is to update progress in the field of drug delivery towards clinical trials, highlighting advances in polymeric micelles used for drug solubilization, reduced off-target toxicity and tumor targeting by the enhanced permeability and retention (EPR) effect. Polymeric micelles vary in stability in blood and drug release rate, and accordingly play different but key roles in drug delivery. For intravenous (IV) infusion, polymeric micelles that disassemble in blood and rapidly release poorly water-soluble anticancer agent such as paclitaxel have been used for drug solubilization, safety and the distinct possibility of toxicity reduction relative to existing solubilizing agents, e.g., Cremophor EL. Stable polymeric micelles are long-circulating in blood and reduce distribution to non-target tissue, lowering off-target toxicity. Further, they participate in the EPR effect in murine tumor models. In summary, polymeric micelles act as injectable nanocarriers for poorly water-soluble anticancer agents, achieving reduced toxicity and targeting tumors by the EPR effect.

Keywords： nanomedicine     parenteral     poly(ethylene glycol)     poly(lactic acid)     reformulation    

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Flow cytometric assessment of the effects of chlorine, chloramine, and UV on bacteria by using nucleicacid stains and 5-cyano-2,3-ditolyltetrazolium chloride

Xuebiao Nie, Wenjun Liu, Mo Chen, Minmin Liu, Lu Ao

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 6, doi: 10.1007/s11783-016-0884-4

Abstract: Flow cytometry based on nucleic acid stains and CTC was established and optimized.The metabolic activity of bacteria persisted after the cytomembranewas damaged.The metabolic activity of the bacteria persisted after the cytomembranewas damaged as detected usingThe metabolic activity of the bacteria decreased with increasing UV dosage, and MP-UV was a stronger

Keywords： Flow cytometry     Escherichia coli     Staphylococcusaureus     UV     CTC     SYTO 9    

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Biotechnological Strategies of Riboflavin Biosynthesis in Microbes Review

Jia-Rong Zhang, Ying-Ying Ge, Pin-He Liu, Ding-Tao Wu, Hong-Yan Liu, Hua-Bin Li, Harold Corke, Ren-You Gan

Engineering 2022, Volume 12, Issue 5,   Pages 115-127 doi: 10.1016/j.eng.2021.03.018

Abstract: Fungi, including Eremothecium ashbyii and Ashbya gossypii, and bacteria, includingBacillus subtilis, Escherichia coli, and lactic acid bacteria, are ideal cell factoriesthe historical process of its industrial production, and then highlights riboflavin biosynthesis in bacteria

Keywords： Vitamin B2     Bacillus subtilis     Lactic acid bacteria     Fungi     Microbial fermentation    

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Research on bio-based degradable composites

Liu Xiaogang,Wang Li,Li Shizhong,Fan Chenyu

Strategic Study of CAE 2011, Volume 13, Issue 2,   Pages 90-95

Abstract:

Starch/poly (lactic acid) composite is such a potential biodegradableThis paper focuses on status of biodegradable plastics and the research progress on starch/poly (lacticacid) and their composites, and gives a figure of the trend of technology development and industrialization

Keywords： progress     bio-based composites     degradable     starch     poly (lactic acid)    

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The size distribution of airborne bacteria and human pathogenic bacteria in a commercial composting plant

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-020-1356-4

Abstract:

•Bacterial concentrations from eight stages were 104–105copies/m3.

Keywords： Size distribution     Airborne bacteria     Biological diversity     Human pathogenic bacteria     Composting plants    

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Organic and inorganic phosphorus uptake by bacteria in a plug-flow microcosm

Jinbo ZHAO, Xuehua LIU

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 173-184 doi: 10.1007/s11783-013-0494-3

Abstract: The aim of this study was to investigate the uptake of two organic phosphorus compounds (phytic acidand D-glucose-6-phosphate) by freshwater bacteria.One experiment suggested that phytic acid (refractory) could displace phosphate from the biofilm surfaceexperiment showed that D-glucose-6-phosphate (labile) could be hydrolysed and utilized easily by the bacteriaThe results also suggested that bacteria might break down the C-P bonds to utilize the carbon.

Keywords： organic phosphorus     bacteria     uptake    

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Nitrifying and denitrifying bacteria in aerobic granules formed in sequencing batch airlift reactors

WANG Fang, YANG Fenglin, QI Aijiu

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 184-189 doi: 10.1007/s11783-007-0032-2

Abstract: The purpose of this study was to investigate nitrifying bacteria and denitrifying bacteria isolated fromBacteria were isolated and determined from aerobic granules using selected media.The growth properties and morphology of bacteria colonies were observed by controlling aerobic or anaerobicIt was found that bacteria in aerobic granules were diverse and some of them were facultative aerobesThe diversity of bacteria in aerobic granules was a premise of simultaneous nitrification and denitrification
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Visible light induces bacteria to produce superoxide for manganese oxidation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 2, doi: 10.1007/s11783-023-1619-y

Abstract:

● Term of manganese-oxidizing microorganisms should be reconsidered.

Keywords： Mn(II) oxidation     Manganese-oxidizing bacteria     Reactive oxygen species     Mn(III/IV) oxides    

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Synergistic degradation of pyrene and volatilization of arsenic by cocultures of bacteria and a fungus

Shuang LIU, Yanwei HOU, Guoxin SUN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 191-199 doi: 10.1007/s11783-012-0470-3

Abstract: The combination of two bacteria ( sp. PY1 and sp. PY2) and a fungus ( sp.

Keywords： pyrene     arsenic     bioremediation     bacteria     fungus    

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Title Author Date Type Operation

Effect of polyethylene glycol on the crystallization, rheology and foamability of poly(lactic acid) containing

Journal Article

Use of dry yeast cells as a cheap nitrogen source for lactic acid production by thermophilic

Kim Yng Ooi, Jin Chuan Wu

Journal Article

Clean production of lactic acid by selective carbon-carbon bond cleavage of biomass feedstock over a

Journal Article

Roles of acid-producing bacteria in anaerobic digestion of waste activated sludge

Sijia Ai, Hongyu Liu, Mengjie Wu, Guangming Zeng, Chunping Yang

Journal Article

Zhang Jiachao: Development and Utilization of Tropical Probiotic Lactic acid Bacteria Resources (2022

27 Feb 2023

Conference Videos

Acid resistance of methanogenic bacteria in a two-stage anaerobic process treating high concentration

ZHOU Xuefei, REN Nanqi

Journal Article

Polymeric micelle nanocarriers in cancer research

Dae Hwan Shin, Yu Tong Tam, Glen S. Kwon

Journal Article

Flow cytometric assessment of the effects of chlorine, chloramine, and UV on bacteria by using nucleicacid stains and 5-cyano-2,3-ditolyltetrazolium chloride

Xuebiao Nie, Wenjun Liu, Mo Chen, Minmin Liu, Lu Ao

Journal Article

Biotechnological Strategies of Riboflavin Biosynthesis in Microbes

Jia-Rong Zhang, Ying-Ying Ge, Pin-He Liu, Ding-Tao Wu, Hong-Yan Liu, Hua-Bin Li, Harold Corke, Ren-You Gan

Journal Article

Research on bio-based degradable composites

Liu Xiaogang,Wang Li,Li Shizhong,Fan Chenyu

Journal Article

The size distribution of airborne bacteria and human pathogenic bacteria in a commercial composting plant

Journal Article

Organic and inorganic phosphorus uptake by bacteria in a plug-flow microcosm

Jinbo ZHAO, Xuehua LIU

Journal Article

Nitrifying and denitrifying bacteria in aerobic granules formed in sequencing batch airlift reactors

WANG Fang, YANG Fenglin, QI Aijiu

Journal Article

Visible light induces bacteria to produce superoxide for manganese oxidation

Journal Article

Synergistic degradation of pyrene and volatilization of arsenic by cocultures of bacteria and a fungus

Shuang LIU, Yanwei HOU, Guoxin SUN

Journal Article