JOURNAL OF LUMINESCENCE
·
2024
·
IF 3.3
Yining Zhang,Bingrong Shi,Baiyu Zhang,Hao Lv,Shuaiyi Zhang,Maorong Wang,Xia Wang
This study presents a novel approach in coherent dye random laser (RL) generation by utilizing the special properties of Enteromorpha prolifera (EP) within a micro-glass tube configuration. The methodological simplicity of injecting a mixed solution of dye and EP into the tube at room temperature achieves a novel way of realizing the RL system, characterized by tunable random lasing thresholds contingent upon the concentration of EP. This tunability stems from the synergistic interplay between photon enhancement and fluorescent dye absorption facilitated by the unique nanoporous structure of EP, culminating in the attainment of a low lasing threshold of 21.7 μJ/mm 2 at an optimized EP concentration of 2 mg/mL. With an excess EP concentration, the nanoporous structure could absorb large amounts of dye, resulting in dye fluorescence reabsorption, and causing the threshold to increase. A power Fourier transition was performed to calculate the effective optical cavity of the RL system, depicting the process of the coherent RL generation. Furthermore, a comprehensive investigation into the emission stability of the RL system revealed remarkable consistency in emission intensity over a prolonged excitation duration of 20 min, underscoring the potential for integration with optoelectronic devices . The L-shape mask imaging of the RL provides high-quality images with low spatial coherence, paving a useful application for speckle-free imaging. These results offer an affordable approach to achieving high-quality and low-threshold RLs using novel biomaterials.
研究领域:
光学
·
生物材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
·
2024
·
IF 1.9
Yuke Mo,Liping Zhou,Shiqian Fu,Huicheng Yang,Bangchu Lin,Jinjie Zhang,Yongjiang Lou,Yongyong Li
High level of aluminum content in Enteromorpha prolifera posed a growing threat to both its growth and human health. This study focused on exploring the factors, impacts, and process of removing aluminum from Enteromorpha prolifera using humic acid. The results showed that under experimental conditions of 0.0330 g·L−1 humic acid concentration, pH 3.80, 34 °C, and a duration of 40 min, the removal rate was up to 80.18%. The levels of major flavor components, proteins, and amino acids in Enteromorpha prolifera increased significantly after treatment, while polysaccharides and trace elements like calcium and magnesium decreased significantly. Infrared spectroscopy demonstrated that the main functional groups involved in binding with Al3+ during humic acid adsorption were hydroxyl, carboxyl, phenol, and other oxygen-containing groups. The adsorption process of Al3+ by humic acid was a spontaneous phenomenon divided into three key stages: fast adsorption, slow adsorption, and adsorption equilibrium, which resulted from both physical and chemical adsorption effects. This study provided a safe and efficient method in algae metal removal.
研究领域:
环境科学
·
海洋生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2015
·
IF 2.858
Jie Xu,Li-Li Xu,Qin-Wei Zhou,Shu-Xian Hao,Tao Zhou,Hu-Jun Xie
In the present study, purification and characterization of enzymatic hydrolysates of polysaccharide from Enteromorpha prolifera (HPE) are described. HPE was sequentially purified by DEAE Cellulose-52 chromatography and Sephadex G-100 chromatography to afford three fractions, namely, PHPE1, PHPE2, and PHPE3. Molecular weights of these three fractions were measured to be 103, 45.4, and 9.8 kDa, respectively, using high performance gel permeation chromatography (HPGPC). The three fractions were evaluated for their antioxidant activities by determining their ability to scavenge 1,1-diphenyl-2-picrylhydrazyl (DPPH), hydroxyl, and superoxide anion radicals. PHPE2 was found to possess the strongest scavenging ability. GC–MS analysis indicates that PHPE2 is mainly composed of mannose , xylose , and glucose.
研究领域:
海洋生物学
·
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2016
·
IF 4.052
Mei-Jia Shi,Xiaoyi Wei,Jie Xu,Bing-Jie Chen,De-Yin Zhao,Shuai Cui,Tao Zhou
In order to improve the bioactivities of the polysaccharide from Enteromorpha prolifera (PE), crude PE (Mw 1400 kDa) was degraded to low molecular weight polysaccharide (44 kDa) in the presence of hydrogen peroxide/ascorbic acid, followed by carboxymethylation. The reaction conditions for carboxymethylation of degraded polysaccharide (DPE) were optimized by Response Surface Methodology. The carboxymethyled degraded polysaccharide (CDPE) obtained under optimized conditions, with a degree of carboxymethylation of 0.849, was characterized by FT-IR and 13 C NMR. The molecular weight of CDPE was measured to be 53.7 kDa. CDPE was evaluated for its antioxidant activity by determining the ability to scavenge 1,1-diphenyl-2-picrylhydrazyl (DPPH), hydroxyl and superoxide anion radicals, and by determining the ferric reducing power. The antioxidant activity of CDPE was found to be greatly improved in comparison with degraded polysaccharide (DPE) and crude polysaccharide from Enteromorpha prolifera (PE).
研究领域:
生物化学
·
食品科学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Min Wang,Zhenhua Yan,Baoxu Huang,Jinsheng Zhao,Renmin Liu
Enteromorpha prolifera bloom caused a series of environmental issues and deterioration due to its rapid growth and ability to grow in fresh or seawater. This study explores the utilization of Enteromorpha prolifera collected from southern portions of the Yellow Sea as a resource for electricity generation by air cathode microbial fuel cells (MFCs). The power density reached 1027 mW/m 2 with an initial hydrolysate concentration of 1,000 mg chemical oxygen demand (COD)/liter, while coulombic efficiencies and COD removal reached 69.1% and 76.1% respectively. For comparison, three monosaccharides (rhamnose, xylose and glucose) were also tested as the fuels in the anode solution, their power density, coulombic efficiencies and COD removal are almost at the same level. These results indicated that Enteromorpha prolifera might be suitable resources for electricity generation using the MFC technology.
研究领域:
环境科学
·
生物能技术
·
海洋生物学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD BIOCHEMISTRY
·
2015
·Vol. 40
·期 3
·275-283
·
IF 0.741
Jie Xu,Li-Li Xu,Qin-Wei Zhou,Shu-Xian Hao,Tao Zhou,Hu-Jun Xie
In order to improve the antioxidant activity of polysaccharide derived from E nteromorpha prolifera (PEP), PEP was hydrolyzed to relatively low molecular weight polysaccharides in the presence of either pectinase or gluco-amylase. Response surface methodology was employed to optimize the hydrolysis conditions based on the polysaccharide degradation rate. Optimum hydrolysis for pectinase was found to be: enzyme concentration 9.36 U/mL, reaction temperature 56C and pH 4.45; for gluco-amylase, the optimum conditions were: enzyme concentration 14.20 U/mL, reaction temperature 49C and pH 4.48. The enzymatic hydrolysates of polysaccharide obtained under optimal conditions were evaluated for their antioxidant activities by determining their ability to scavenge 1,1-diphenyl-2-picrylhydrazyl, hydroxyl and superoxide anion radicals. The results indicate that the enzymatic hydrolysates of polysaccharide exhibited stronger free radical scavenging ability than nondegraded polysaccharide, while pectinase hydrolyzed polysaccharide was found to possess superior radical scavenging ability to that of gluco-amylase hydrolyzed polysaccharide. Practical Applications In order to fully utilize polysaccharide resources, an effective method to improve the antioxidant activity of E nteromorpha prolifera was established by enzymatic degradation. The hydrolysates obtained by this method may be used as ingredients of functional foods due to their antioxidant activity.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Zhaoying Li,Jinfu Lyu,Hao Qi,Daokuan Liang,Xiaofeng Li,Haoxi Ben,Lianghuan Wei,Qirong Yang
The large-scale blooming of Enteromorpha prolifera (EP) results in "green tide," triggering significant environmental issues . However, EP as algal biomass can be converted to syngas through fast pyrolysis . This research investigates the fast pyrolysis of modeled compounds of EP for syngas production . Rhamnose (Rha), glucuronic acid (GlcA), aspartic acid (Asp), glutamic acid (Glu), and alanine (Ala) are used as the model compounds. This study employs experiments and simulations on fast pyrolysis processes . The results reveal that polysaccharide sulfate (PS) undergoes various reactions, including glycosidic bond cleavage, pyran ring opening, dehydration, and C-C bond cleavage. Simultaneously, amino acids experience dehydration, deamination, decarboxylation , and decarboxylation reactions. Fast co-pyrolysis of modeled compounds of EP, the monosaccharides and uronic acid molecules produced by PS pyrolysis also attack each other with amino acid molecules to produce other substances. The pyrolysis gas obtained from the model compounds of PS exhibits the highest CO content. Notably, amino acids possess a superior capability to produce H 2 compared with PS. With the fast co-pyrolysis of EP model compounds, the CO 2 content increases while the CO content decreases. This study provides a theoretical basis for the fast pyrolysis of EP to produce syngas.
研究领域:
环境科学
·
能源科学
·
生物化学
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
·
2021
·
IF 5.485
Chuanbin Wang,Xiangping Li,Wenzhu Wu,Guanyi Chen,Junyu Tao
Cadmium emission from industrial processes is causing serious environmental problems, and biochar adsorption is an effective approach to control the cadmium content in wastewater. Producing biochar from Enteromorpha prolifera could not only provide sustainable biochar resource, but also promisingly solve the algae bloom problem worldwide. This work prepared Enteromorpha prolifera biochar (EPB) via slow pyrolysis method, the effect of different KOH to EPB mass ratios and different influencing parameters were also studied. Characterizations including SEM-EDS, FTIR and elemental analysis were comprehensively conducted to explore the physicochemical properties of EPB. The results showed that EPB activated by KOH with an impregnation ratio of 1:2 had the optimal cadmium removal performance, where a removal efficiency of 99.8% was obtained. Electrostatic interaction was a major adsorption mechanism. The isotherm analysis showed that Langmuir isotherm model could better fit the adsorption data. As a result, KOH activated EPB presented satisfactory features as a promising cadmium adsorbent with multiple environmental benefits.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 39
·14508-14519
·
IF 8.307
Zhiwang Hao,Jimei Liu,Xinliang He,Yubo Meng,Xiaobin Wang,Dong Liu,Naitao Yang,Wenjie Hou,Chao Bian
Although the rapid advances of wireless technologies and electronic devices largely improve the quality of life, electromagnetic (EM) pollution increases the risk of exposure to EM radiation. Developing high-efficiency absorbers with a rational structure and wideband characteristics is of great significance to eliminate radiation pollution. Herein, Enteromorpha prolifera derived biochar which would provide a suitable surface and multiple polarizations has been prepared as the supporter to anchor nanoparticles. In addition, theoretical simulation results further confirm that radar wave scattering could be largely inhibited after coating with absorbing materials. As a result, the hybrid absorbers achieve remarkable EM absorption properties attributed to the synergistic magnetic–dielectric loss. Elaborate compositional and structural characterization studies indicate that the absorber has a large specific area and numerous polarization centers, which would make full use of waste biomass as light weight and broadband high-performance EM absorption materials.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2020
·
IF 5.715
Xiangping Li,Chuanbin Wang,Jingnan Tian,Juping Liu,Guanyi Chen
Using biochar to remove heavy metals from water is environmentally beneficial. In this study, three kinds of chemical reagents, including ZnCl 2 , H 3 PO 4 and KMnO 4 , were introduced to modify the biochar derived from Enteromorpha prolifera . The performance of these modified biochar in removing Cadmium ions (Cd(II)) from water was investigated. The physicochemical properties of activated biochars were characterized by N 2 -sorption, thermal gravity and differential thermal gravity (TG/DTG), scanning electron microscopy (SEM), elemental analysis and Fourier transform infrared spectroscopy (FTIR). The results showed that the removal rate of Cd(II) from water by EP biochar modified with H 3 PO 4 was significantly increased, and the maximum adsorption capacity of Cd(II) reached to 423 mg/g for PBC. Moreover, the adsorption of Cd(II) from water by phosphoric acid modified biochar was very fast, and the saturation adsorption of Cd(II) was reached within 1 h. Compared with pseudo first-order model, pseudo secondary-order model was much more suitable for analyzing the adsorption kinetics data of Cd(II) onto KBC or ZBC. The adsorption of Cd(II) onto PBC was analyzed by the intra-particle diffusion kinetic model, where the value of R 2 was high as 0.98. The Langmuir model was fit for phosphoric acid modified biochar.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Food Measurement and Characterization
·
2021
·Vol. 15
·期 5
·4623-4634
·
IF 2.431
Zhou Jia-Min,Shi Mei-Jia,Wei Xiao-Yi,Zhou Tao
In order to improve the biological activities of polysaccharides from Enteromorpha prolifra (EP), the crude EP was degraded in the presence of pectinase and glucoamylase. The reaction conditions for the hydrolysis of EP were optimized as: hydrolysis temperature 45.2 °C, total enzyme concentration 48.5 U/mL, with an activity ratio of pectinase to glucoamylase 3.4:1, pH 4.5, degradation time 3 h. In vitro antioxidant activity of the enzymatic degraded polysaccharides from E. prolifra (EEP) obtained under the optimal conditions was significantly improved when compared to that of EP. The IC 50 values of EEP to scavenge DPPH, hydroxyl and superoxide anion radicals were found to be 3.31, 3.02 and 3.90 mg/mL, respectively, while those values for EP were 19.57, 5.96 and 5.51 mg/mL, respectively. At 5 mg/mL, the ferric iron reducing power of EEP was 1.41 times higher than that of EP; the ferrous chelating ability of EEP was 89.6%, being much than that of EP (54.9%). Furthermore, EEP was found to have stronger tyrosinase inhibitory effects than EP. At 3.0 mg/mL, the inhibition rates of EEP on monophenolase and diphenolase activity of mushroom tyrosinase were measured as 32.7% and 39.1%, respectively, while those values for EP were 16.3% and 21.1%, respectively. The inhibition of EEP on diphenolase activity of mushroom tyrosinase was reversible and of competitive-uncompetitive mixed-type. EEP prepared in this study may find application in food industry and cosmetics.
研究领域:
海洋生物学
·
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2017
·Vol. 7
·期 1
·1-12
·
IF 4.259
Xu Yuanhong,Li Dan,Liu Mengli,Niu Fushuang,Liu Jingquan,Wang Erkang
Enteromorpha prolifera ( E. prolifera ), one of the main algae genera for green tide, significantly influences both the coastal ecological environment and seawater quality. How to effectively utilize this waste as reproducible raw resource with credible application mechanism are urgent environmental issues to be solved. Herein, E. prolifera was converted to attractive fluorescent carbon nanodots (CNDs) by one-pot green hydrothermal process. The purity and quantum yields for the as-prepared CNDs can be enhanced upon the post-treatment of ethanol sedimentation. The CNDs can be well dispersed in aqueous medium with uniform spherical morphology, narrow size distribution and average size of 2.75 ± 0.12 nm. The ease synthesis and relatively high quantum yields of the CNDs make E. prolifera inexpensive benefit to the human and nature, such as applications in efficient cell imaging and fiber staining. Furthermore, it was discovered that the fluorescence intensity of the CNDs can be selectively quenched upon Fe 3+ addition, which can be used for specific sensitive assay and removal of Fe 3+ in aqueous medium. More importantly, it was reasonably proposed that the quenching was resulted from the synergistic effects of CNDs aggregation and Fe 3+ -CNDs charge-transfer transitions due to the coordination interactions between Fe 3+ and the oxygenous groups on the CNDs.
研究领域:
环境科学
·
材料科学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）