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Insights into the changes of amino acids, microbial community, and enzymatic activities related with

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1635-y

Abstract:

● The highest seed germination index was achieved at 0.3 g/g total solids of food waste.

Keywords： Composting     Food waste     Amino acids     Microbial community     Enzymatic activity     Nutrient quality    

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Nitrogen-doped graphene approach to enhance the performance of a membraneless enzymatic biofuel cell

Alireza AHMADIAN YAZDI, Jie XU

Frontiers in Energy 2018, Volume 12, Issue 2,   Pages 233-238 doi: 10.1007/s11708-018-0529-3

Abstract: to the excellent sensitivity of N-graphene, the development of highly sensitive and fast-response enzymaticor not improving the anodic response to glucose detection leads to a higher overall performance of enzymatic

Keywords： enzymatic fuel cell     nitrogen-doped graphene     reduced graphene oxide     catalyst-free synthesis    

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USING AN AQUEOUS ENZYMATIC METHOD

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 4,   Pages 623-634 doi: 10.15302/J-FASE -2021400

Abstract: An approach to isolate edible microalgal oil from Schizochytrium sp. using aqueous enzymatic

Keywords： antioxidant activity / aqueous enzymatic extraction / edible microalgal oil / fatty acid composition    

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Dissolution and enzymatic hydrolysis of casein micelles studied by dynamic light scattering

LIU Rui, QI Wei, SU Rongxin, ZHANG Yubin, JIN Fengmin, HE Zhimin

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 123-127 doi: 10.1007/s11705-007-0023-7

Abstract: The effects of temperature, ionic strength, and enzymatic hydrolysis on the average hydrodynamic radiusThe value of casein increased rapidly during the process of enzymatic hydrolysis, and the structuralmodel of casein micelles in the enzymatic hydrolysis process was also proposed, i.e. the casein micelle

Keywords： compact     strength     temperature     regularly flocky     heating    

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Study on enzymatic hydrolysis of steam exploded straw by using shaking ball

SUN Zhanwei, FU Xiaoguo, CHEN Hongzhang, WANG Yanhui, MA Runyu

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 22-27 doi: 10.1007/s11705-008-0002-7

Abstract: A novel method of enzymatic hydrolysis was developed in this paper to produce a high conversion yieldA comparison was described by using three methods of enzymatic hydrolysis and adsorption of steam exploded

Keywords： adequate filter-paper     comparison     conversion     continuous frequency     substrate    

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Valorisation of protein waste: An enzymatic approach to make commodity chemicals? ?

Madura B. A. Kumar, Yuan Gao, Wei Shen, Lizhong He

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3,   Pages 295-307 doi: 10.1007/s11705-015-1532-4

Abstract: Case studies of enzymatic conversion are presented for different amino acids including glutamic acid,

Keywords： amino acids     protein waste     reactor     conversion     commodity chemicals     enzymes    

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Enhanced enzymatic removal of anthracene by the mangrove soil-derived fungus,

Paul Olusegun Bankole, Kirk Taylor Semple, Byong-Hun Jeon, Sanjay Prabhu Govindwar

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1292-3

Abstract: Abstract • A. sydowii strain bpo1 exhibited 99.8% anthracene degradation efficiency. • Four unique metabolic products were obtained after anthracene degradation. • Ligninolytic enzymes induction played vital roles in the removal of anthracene. • Laccase played a crucial role in comparison with other enzymes induced. The present study investigated the efficiency of Aspergillus sydowii strain bpo1 (GenBank Accession Number: MK373021) in the removal of anthracene (100 mg/L). Optimal degradation efficiency (98.7%) was observed at neutral pH, temperature (30℃), biomass weight (2 g) and salinity (0.2% w/v) within 72 h. The enzyme analyses revealed 131%, 107%, and 89% induction in laccase, lignin peroxidase, and manganese peroxidase respectively during anthracene degradation. Furthermore, the degradation efficiency (99.8%) and enzyme induction were significantly enhanced with the addition of 100 mg/L of citric acid and glucose to the culture. At varying anthracene concentrations (100–500 mg/L), the degradation rate constants (k1) peaked with increasing concentration of anthracene while the half-life (t1/2) decreases with increase in anthracene concentration. Goodness of fit (R2 = 0.976 and 0.982) was observed when the experimental data were subjected to Langmuir and Temkin models respectively which affirmed the monolayer and heterogeneous nature exhibited by A. sydwoii cells during degradation. Four distinct metabolites; anthracene-1,8,9 (2H,8aH,9aH)-trione, 2,4a-dihydronaphthalene-1,5-dione, 1,3,3a,7a-tetrahydro-2-benzofuran-4,7-dione and 2-hydroxybenzoic acid was obtained through Gas Chromatography-Mass spectrometry (GC-MS). A. sydowii exhibited promising potentials in the removal of PAHs.

Keywords： Aspergillus sydowii     Anthracene     Biodegradation     Polycyclic aromatic hydrocarbons    

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Production and application of biosurfactants

Han Shuangyan,Ren Changqiong,Lin Ying

Strategic Study of CAE 2009, Volume 11, Issue 4,   Pages 26-30

Abstract: structure and charactersistics of surfactarts and produced by microbial fermentation processes and enzymatic

Keywords： biosurfactants     microbial fermentation     enzymatic synthesis     bio-compatibility     biodegradability    

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Electrochemical sensor investigation of carbon-supported PdCoAg multimetal catalysts using sugar-containing beverages

Firat Salman, Hilal C. Kazici, Hilal Kivrak

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 629-638 doi: 10.1007/s11705-019-1840-1

Abstract: Novel PdCoAg/C nanostructures were successfully synthesized by the polyol method in order to develop electrocatalysts, related to the glucose sensor performance of the high glycemic index in beverages. The characterization of this novel PdCoAg/C electrocatalyst was performed by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and high-resolution transmission electron microscopy equipped with energy dispersive X-ray. The characterization results revealed that electronic state of the PdCoAg/C electrocatalyst was modified by the addition of the third metal. The electrochemical performances of the sensor were investigated by cyclic voltammetry and differential pulse voltammetry. The prepared enzyme-free sensor exhibited excellent catalytic activity against glucose with a wide detection range (0.005 to 0.35 mmol∙L ), low limit of detection (0.003 mmol∙L ), high sensitivity (4156.34 µA∙mmol ∙L∙cm ), and long-term stability (10 days) because of the synergistic effect between the ternary metals. The glucose contents of several energy drinks, fruit juices, and carbonated beverages were analyzed using the novel PdCoAg/NGCE/C sensor system. These results indicate the feasibility for applications in the foods industry.

Keywords： non-enzymatic     glucose detection     ternary metals     glycemic index     beverages    

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Enzymatic nitrous oxide emissions from wastewatertreatment

Gang Guo, Yayi Wang, Tianwei Hao, Di Wu, Guang-Hao Chen

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 1, doi: 10.1007/s11783-018-1021-3

Abstract: Nitrous oxide (N O), a potent greenhousegas, is emitted during nitrogen removal in wastewater treatment, significantlycontributing to greenhouse effect. Nitrogen removal generally involvesnitrification and denitrification catalyzed by specific enzymes. N O production and consumption vary considerably in responseto specific enzyme-catalyzed nitrogen imbalances, but the mechanismsare not yet completely understood. Studying the regulation of relatedenzymes’ activity is essential to minimize N O emissions during wastewater treatment. This paper aims to reviewthe poorly understood related enzymes that most commonly involvedin producing and consuming N O in terms oftheir nature, structure and catalytic mechanisms. The pathways ofN O emission during wastewater treatment arebriefly introduced. The key environmental factors influencing N O emission through regulatory enzymes are summarizedand the enzyme-based mechanisms are revealed. Several enzyme-basedtechniques for mitigating N O emissions directlyor indirectly are proposed. Finally, areas for further research onN O release during wastewater treatment arediscussed.

Keywords： Nitrous oxide     Mitigation     Enzyme catalysis     Nitrogen removal     Wastewater treatment    

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Production of pectic extracts from sugar beet pulp with antiproliferative activity on a breast cancer cell line

Jacqueline CONCHA, Caroline WEINSTEIN, María Elvira Zú?IGA

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 482-489 doi: 10.1007/s11705-013-1342-5

Abstract: following steps: lipid extraction with hexane, removal of soluble complex carbohydrates and proteins, and enzymaticThe enzymatic treatment was carried out with Rohapect DA6L under the following conditions: 50°C, pH 4.0

Keywords： pectic extracts     antiproliferative activity     breast cancer     enzymatic treatment    

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A multi-integrated approach on toxicity effects of engineered TiO

Ana PICADO,Susana M. PAIXÃO,Liliana MOITA,Luis SILVA,Mário S. DINIZ,Joana LOURENÇO,Isabel PERES,Luisa CASTRO,José Brito CORREIA,Joana PEREIRA,Isabel FERREIRA,António Pedro Alves MATOS,Pedro BARQUINHA,Elsa MENDONCA

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 793-803 doi: 10.1007/s11783-015-0775-0

Abstract: The new properties of engineered nanoparticles drive the need for new knowledge on the safety, fate, behavior and biologic effects of these particles on organisms and ecosystems. Titanium dioxide nanoparticles have been used extensively for a wide range of applications, e.g, self-cleaning surface coatings, solar cells, water treatment agents, topical sunscreens. Within this scenario increased environmental exposure can be expected but data on the ecotoxicological evaluation of nanoparticles are still scarce. The main purpose of this work was the evaluation of effects of TiO nanoparticles in several organisms, covering different trophic levels, using a battery of aquatic assays. Using fish as a vertebrate model organism tissue histological and ultrastructural observations and the stress enzyme activity were also studied. TiO nanoparticles (Aeroxide® P25), two phase composition of anatase (65%) and rutile (35%) with an average particle size value of 27.6±11 nm were used. Results on the EC for the tested aquatic organisms showed toxicity for the bacteria, the algae and the crustacean, being the algae the most sensitive tested organism. The aquatic plant showed no effect on growth. The fish showed no effect on a 21 day survival test, though at a biochemical level the cytosolic Glutathione-S-Transferase total activity, in intestines, showed a general significant decrease ( <0.05) after 14 days of exposure for all tested concentrations. The presence of TiO nanoparticles aggregates were observed in the intestine lumen but their internalization by intestine cells could not be confirmed.

Keywords： ecotoxicity     enzymatic analysis     histology     transmission electron microscopy (TEM)     TiO2-nanoparticles    

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Thinking Concerning the Utilization of Anhydrous Ethanol From Biomass as Fuel

Ni Weidou,Li Zheng,Jin Hui

Strategic Study of CAE 2001, Volume 3, Issue 5,   Pages 44-49

Abstract: A preliminary assessment related to production of ethanol by enzymatic hydrolysis of cellulose materials

Keywords： gasoline-ethanol mixture     ethanol     corn-ethanol     enzymatic hydrolysis     energy security    

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Study on the treatment of waste water of the cephalexin enzymatic process by the combination process

Ruan Huimin,Huang Jie,Li Jian,Shen Jiangnan,Wang Jiade,Gao Congjie

Strategic Study of CAE 2014, Volume 16, Issue 7,   Pages 42-46

Abstract:

The salt in the wastewater of the cephalexin enzymatic process was removedAll results showed that it was feasible to treatment the waste water of the cephalexin enzymatic process

Keywords： Cephalexin     Waste water     Electrodialysis     Reverse osmosis    

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High Sn-2 Docosahexaenoic Acid Lipids for Brain Benefits, and Their Enzymatic Syntheses: A Review Review

Jun Jin, Qingzhe Jin, Xingguo Wang, Casimir C. Akoh

Engineering 2020, Volume 6, Issue 4,   Pages 424-431 doi: 10.1016/j.eng.2020.02.009

Abstract:

The normal development and maintenance of central neural functions are highly correlated with the amount of docosahexaenoic acid (DHA; ω-3 fatty acid) accumulated in the brain. DHA incorporated at the sn-2 position of lipids is well absorbed by intestinal mucosa and utilized efficiently in vivo. However, modern consumers have a reduced direct intake of DHA and increased intake of saturated fats or ω-6 fatty acid oils, resulting in behavioral and neurophysiological deficits. To provide an understanding of the integrated beneficial effects of DHA on the human brain, this review introduces the positional difference (sn-2 and sn-1,3 positions) of DHA on a glycerol skeleton in natural fats and oils, and further discusses the possible functional mechanism regarding DHA supplementation and the gut-brain axis. The multiple bidirectional routes in this axis offer a novel insight into the interaction between DHA supplementation, the gut microbiota, and brain health. To achieve high sn-2 DHA in diets, it is suggested that sn-2 DHA lipids be enzymatically produced in more efficient and economical ways by improving the specific activities of lipases and optimizing the purification procedures. These types of diets will benefit individuals with strong needs for sn-2 ω-3 lipids such as infants, children, and pregnant and lactating women.

Keywords： Docosahexaenoic acid， Sn-2 docosahexaenoic acid，Monoacylglycerol，Brain，Gut-brain axis，Structured lipid    

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Title Author Date Type Operation

Insights into the changes of amino acids, microbial community, and enzymatic activities related with

Journal Article

Nitrogen-doped graphene approach to enhance the performance of a membraneless enzymatic biofuel cell

Alireza AHMADIAN YAZDI, Jie XU

Journal Article

USING AN AQUEOUS ENZYMATIC METHOD

Journal Article

Dissolution and enzymatic hydrolysis of casein micelles studied by dynamic light scattering

LIU Rui, QI Wei, SU Rongxin, ZHANG Yubin, JIN Fengmin, HE Zhimin

Journal Article

Study on enzymatic hydrolysis of steam exploded straw by using shaking ball

SUN Zhanwei, FU Xiaoguo, CHEN Hongzhang, WANG Yanhui, MA Runyu

Journal Article

Valorisation of protein waste: An enzymatic approach to make commodity chemicals? ?

Madura B. A. Kumar, Yuan Gao, Wei Shen, Lizhong He

Journal Article

Enhanced enzymatic removal of anthracene by the mangrove soil-derived fungus,

Paul Olusegun Bankole, Kirk Taylor Semple, Byong-Hun Jeon, Sanjay Prabhu Govindwar

Journal Article

Production and application of biosurfactants

Han Shuangyan,Ren Changqiong,Lin Ying

Journal Article

Electrochemical sensor investigation of carbon-supported PdCoAg multimetal catalysts using sugar-containing beverages

Firat Salman, Hilal C. Kazici, Hilal Kivrak

Journal Article

Enzymatic nitrous oxide emissions from wastewatertreatment

Gang Guo, Yayi Wang, Tianwei Hao, Di Wu, Guang-Hao Chen

Journal Article

Production of pectic extracts from sugar beet pulp with antiproliferative activity on a breast cancer cell line

Jacqueline CONCHA, Caroline WEINSTEIN, María Elvira Zú?IGA

Journal Article

A multi-integrated approach on toxicity effects of engineered TiO

Ana PICADO,Susana M. PAIXÃO,Liliana MOITA,Luis SILVA,Mário S. DINIZ,Joana LOURENÇO,Isabel PERES,Luisa CASTRO,José Brito CORREIA,Joana PEREIRA,Isabel FERREIRA,António Pedro Alves MATOS,Pedro BARQUINHA,Elsa MENDONCA

Journal Article

Thinking Concerning the Utilization of Anhydrous Ethanol From Biomass as Fuel

Ni Weidou,Li Zheng,Jin Hui

Journal Article

Study on the treatment of waste water of the cephalexin enzymatic process by the combination process

Ruan Huimin,Huang Jie,Li Jian,Shen Jiangnan,Wang Jiade,Gao Congjie

Journal Article

High Sn-2 Docosahexaenoic Acid Lipids for Brain Benefits, and Their Enzymatic Syntheses: A Review

Jun Jin, Qingzhe Jin, Xingguo Wang, Casimir C. Akoh

Journal Article