RSC Advances
·
2015
·Vol. 5
·期 86
·70178-70185
·
IF 3.84
Mingfang Ma,Jinge Gu,Minmin Yang,Zhaolou Li,Zhuoqun Lu,Yimeng Zhang,Pengyao Xing,Shangyang Li,Xiaoxiao Chu,Yajie Wang,Qi Li,Minyan Lin,Aiyou Hao
Sodium benzoate is an important and widely used food additive, however, its self-assembly properties in diverse solvents have been rarely studied. Here, we report different self-assembled aggregates, including sodium benzoate vesicles and sodium benzoate gel, in different solvent environments. Sodium benzoate vesicles and gel were identified by Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM) and Dynamic Light Scattering (DLS). Ultraviolet-visible (UV-vis) spectroscopy, Fourier Transform Infrared (FT-IR) spectroscopy, Thermal Gravity Analysis (TGA), Differential Scanning Calorimetry (DSC) and Small-Angle X-ray Scattering (SAXS) were further employed to study the formation mechanism of the sodium benzoate gel. A possible gel formation mechanism was proposed. Furthermore, sodium benzoate gel has multiple stimulus responsiveness, the addition of hydrochloric acid and metal ions can all cause disaggregation of sodium benzoate gel. Finally, sodium benzoate aggregates were found in calf serum.
研究领域:
材料科学
·
食品科学
·
化学
✓ 已验证
DOI
高影响因子
Collagen and Leather
·
2024
·Vol. 6
·期 1
·1-12
·
IF 0
Zhang Chi,Zhou Ji-bo,Sun Nan,Liao Xue-pin,Shi Bi
Melamine resin (MR), traditionally synthesized using melamine and formaldehyde, is widely used in the leather industry. However, the emission of free formaldehyde poses a significant challenge for conventional MR. To address the issues of aldehyde in MR, extensive research has been conducted. This paper introduces a novel aldehyde-free MR (LTSL) retanning agent synthesized using cyanuric chloride, l-lysine, and sodium sulfanilate. The chemical structure of LTSL was analyzed via Fourier transform infrared spectroscopy, nuclear magnetic resonance, and X-ray photoelectron spectroscopy. The presence of amino, carboxyl, and sulfonic acid groups in LTSL enhanced its storability and imparted LTSL with an amphoteric character. The isoelectric point of LTSL was optimized to reach 4.37, and LTSL exhibited an appropriate size distribution with an average particle size of 254.17 nm and achieved high absorption rates of 87.77% and 95.84% for retanning and fatliquoring agents, respectively. Consequently, the thickness rate of LTSL reached up to 37%, with no detectable formaldehyde. Notably, LTSL also demonstrated excellent physical and mechanical properties, primarily attributed to the coordination and electrostatic interactions between the chrome-tanned collagen fiber and amino/carboxyl groups in LTSL. This research presents an innovative approach for developing an aldehyde-free MR retanning agent, significantly contributing to the sustainable development of leather manufacturing. Graphical Abstract
研究领域:
材料科学
·
皮革工业
·
化学合成
✓ 已验证
DOI
FOOD CHEMISTRY
·
2024
·
IF 8.5
Ze Xu,Li Jin,Bowen Yang,Wenwen Wang,Yukun Yang,Guanjun Wang,Jizhou Wu,Dandan Sun,Jie Ma
A molecularly imprinted polymer (MIP) based microfiber differential demodulation sensing system for sodium benzoate (SB) concentration detection is proposed. The specific binding of MIP on the surface of microfibers with SB can lead to changes in local refractive index (RI). RI change induces a drift in the interference wavelength, which can be monitored by the power difference between two fiber Bragg gratings (FBGs). The sensing system can detect SB in the concentration range of 0.1–50 μg/ml, and interference wavelength and FBG power difference sensitivities are 0.55 nm/(μg/ml) and 2.64 dB/(μg/ml) in the low concentration range of 0.1–1 μg/ml, respectively, with a limit of detection (LOD) of 0.1 μg/ml. This microfiber differential demodulation sensing system is not only simple to fabricate, but also simplifies the demodulation equipment to reduce the cost, which providing a simple, reliable and low-cost technique for the quantitative detection of SB concentration in beverages and flavoured foods.
研究领域:
食品科学
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光学传感
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2015
·
IF 7.435
Lan Yang,Xing Hua,Jun Su,Wei Luo,Shengli Chen,Gongzhen Cheng
Monodisperse AgPd alloy nanoparticles are synthesized by co-reduction of silver nitrate and palladium acetylacetonate in 1-octadecene and oleic acid using tert-butylamine borane as the reducing agent at 60 °C. Thanks to the narrow size distribution of the AgPd alloy NPs and the synergistic effect with graphene, the as-synthesized Ag 74 Pd 26 /graphene exerts nearly 100% hydrogen selectivity and exceedingly high catalytic activity toward hydrogen generation from formic acid at room temperature, with the turnover frequency value of 572 h −1 .
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2019
·
IF 2.298
Yang Liu,Yan Wang,Wangfeng Cai
In this work, the salting effect of sodium hydroxide (NaOH) and sodium formate (HCOONa) on the liquid–liquid equilibrium (LLE) of polyoxymethylene dimethyl ethers (DMMn) in aqueous solution was studied. The LLE data of the systems (DMM1 + water) and (DMM2 + water) and the system (DMM1 + water + DMM2) under different concentrations of NaOH and HCOONa at 293.15 and 308.15 K were measured. According to the verification with the Marcilla-modified Eisen–Joffe equation, the experimental data has a good consistency. Distribution coefficients were calculated and compared, and the results showed that NaOH and HCOONa have a significant salting-out effect on DMMn and water separation. Based on the experimental LLE data, the original nonrandom two liquid (NRTL) and the electrolyte NRTL activity coefficient models were correlated by the maximum-likelihood principle, which showed that the electrolyte NRTL model was more appropriate. The experimental data and the binary interaction parameters could provide a useful reference for DMMn product reaction extraction before rectification.
研究领域:
化学工程
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
Biosensors-Basel
·
2022
·Vol. 12
·期 12
·1084
·
IF 5.743
Tao Tian,Wei-Yi Zhang,Hang-Yu Zhou,Li-Jing Peng,Xi Zhou,Hao Zhang,Feng-Qing Yang
In this study, the personal glucose meter (PGM) was first used as a fast and user-friendly meter for analyzing catechol (CA) based on the reduction of the mediator K3[Fe(CN)6] to K4[Fe(CN)6] in the glucose test strip. Then, an easy, low-cost, and convenient PGM-based method for detecting tyrosinase (TYR) activity and sodium benzoate (SBA) was developed on the basis of the TYR-catalyzed reaction. In this method, CA is oxidized to formo-benzoquinone by TYR, thereby reducing the residual amount of CA and the PGM readout. On the other hand, SBA can inhibit the oxidation of CA catalyzed by TYR and increase the residual amount of CA after the enzymatic reaction. Therefore, the activity of TYR is proportional to the difference in the PGM readout of CA, and the concentration of SBA is positively correlated with the residual amount of CA. After the relevant experimental conditions were systematically optimized, the proposed PGM-based method for the detection of TYR and SBA was successfully validated. The liner ranges are 1.0–103.3 U/mL and 6.25–1000 ppm, and the quantification limits are 1.0 U/mL and 6.25 ppm for TYR and SBA, respectively. Moreover, the spiked recovery tests in normal human serum and carbonate beverages (i.e., Cola, Sprite, and Fanta) were performed, and the recoveries (91.6–106.8%) further confirm the applicability of the PGM-based method in real sample analysis.Keywords:tyrosinase;sodium benzoate;personal glucose meter;enzyme sensor;carbonate beverages sample
研究领域:
分析化学
·
生物化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Microbiology
·
2022
·
IF 6.064
Dong Yuling,Ding Zhongfeng,Song Linxia,Zhang Desheng,Xie Changjian,Zhang Shujing,Feng Ling,Liu Hongliang,Pang Qiuxiang
Sodium benzoate (SB), the sodium salt of benzoic acid, is widely used as a preservative in foods and drinks. The toxicity of SB to the human body attracted people’s attention due to the excessive use of preservatives and the increased consumption of processed and fast foods in modern society. The SB can inhibit the growth of bacteria, fungi, and yeast. However, less is known of the effect of SB on host commensal microbial community compositions and their functions. In this study, we investigated the effect of SB on the growth and development of Drosophila melanogaster larvae and whether SB affects the commensal microbial compositions and functions. We also attempted to clarify the interaction between SB, commensal microbiota and host development by detecting the response of commensal microbiota after the intervention. The results show that SB significantly retarded the development of D. melanogaster larvae, shortened the life span, and changed the commensal microbial community. In addition, SB changed the transcription level of endocrine coding genes such as ERR and DmJHAMT. These results indicate that the slow down in D. melanogaster larvae developmental timing and shortened life span of adult flies caused by SB intake may result from the changes in endocrine hormone levels and commensal microbiota. This study provided experimental data that indicate SB could affect host growth and development of D. melanogaster through altering endocrine hormone levels and commensal microbial composition.
研究领域:
毒理学
·
微生物学
·
发育生物学
·
分子生物学
✓ 已验证
DOI
PubMed
高影响因子
TALANTA
·
2019
·
IF 4.916
Linke Xue,Linke Chen,Jing Dong,Lemei Cai,Yiru Wang,Xi Chen
Medicine safety has become a large concern and prompts an urgent need to develop a rapid, simple and sensitive analytical method, which can monitor excessive preservatives in medicine. In this work, dispersive liquid-liquid microextraction (DLLME) was combined with surface enhanced Raman scattering (SERS) for a quick analysis of a kind of preservatives, sodium benzoate , in ibuprofen oral solution. The experimental parameters affecting DLLME were systematically investigated. Under the optimal conditions, the whole procedure, including DLLME and the SERS analysis, could be carried out within 10 min. A good linearity between the concentration of sodium benzoate ranging from 10 to 500 mg L −1 and the SERS signal intensity could be obtained, and the correlation coefficient (R 2 ) 0.9986. The method detection limit was 0.56 mg L −1 . The relative standard deviation was less than 6.33% for ten replicates at the same sample concentrations. The analytical results prove that the method is suitable for rapid determination of sodium benzoate in ibuprofen oral samples.
研究领域:
分析化学
·
药物分析
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science China-Earth Sciences
·
2016
·Vol. 60
·期 2
·391-396
·
IF 1.655
Li Jing,Sun Lei,Yu ZhiMing,Song XiuXian
Prevention of annual “green tides” caused by blooms of the green macroalga Ulva prolifera , which have occurred in the Yellow Sea since 2007, has received much attention. Increasing evidence indicates that micro-propagules on the rafts used for Porphyra yezoensis aquaculture along the coastline of Jiangsu Province in China, were the primary source of these green tides. In this study, we investigated the effectiveness of a silicone antifouling coating for preventing the adhesion and germination of U. prolifera micro-propagules on bamboo and nylon ropes, which have been used in rafts for P. yezoensis aquaculture. Our results demonstrated that a coating of silicone (Sylgard 184) containing 1.0 wt.% sodium benzoate (NaB) could reduce the adhesion rate to <5% and completely inhibited the growth of U. prolifera propagules on the coated surfaces. Coating bamboo and nylon ropes with NaB-incorporated silicone thus proved a potentially effective method for controlling the initial biomass accumulation of U. prolifera .
研究领域:
海洋生物学
·
环境科学
·
水产养殖
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2020
·
IF 3.421
Wenbo Jia,Chuanmin Chen,Songtao Liu
The mercury re-emission characteristics and inhibition effect of sodium dithiocarbamate (DTCR) on mercury re-emission in a simulated desulfurization slurry were investigated. The effects of the desulfurization slurry parameters (including slurry temperature, initial pH value, O2 concentration, and Cl– concentration) on mercury re-emission with and without DTCR were explored. Moreover, the kinetic parameters (reaction order, reaction rate constant, and apparent activation energy) of mercury re-emission and inhibition were calculated by the experimental data. The results showed that addition of DTCR could effectively reduce the mercury re-emission from the desulfurization slurry. The mercury re-emission was enhanced with increases of the slurry temperature and initial pH, while O2 and Cl– in the slurry could inhibit the mercury re-emission. Further study shows that the mercury re-emission reaction processes in the desulfurization slurry with and without DTCR are both consistent with the pseudo-first-order kinetics. In the absence of DTCR, the reaction rate constant of mercury re-emission is 0.01888 min–1, and the apparent activation energy is 44.59 kJ/mol. In the presence of 0.002% DTCR, the reaction rate constant of mercury re-emission is 0.01126 min–1 and the apparent activation energy is 49.08 kJ/mol. Moreover, the effects of slurry parameters on the reaction rate constant were also explored. The present findings are valuable for coal-fired power plants to control mercury re-emission from a desulfurization slurry.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
Plasma Processes and Polymers
·
2024
·
IF 2.9
Qingjin Tang,Mingjia Zhang,Binhong Wu,Xin Wang,Xin Tu,Kostya (Ken) Ostrikov,Linsheng Liu,Qiang Chen
We revisit one of the most used techniques for quantifying the aqueous OH radicals (OH aq ) in plasma–liquid systems, the molecular probe method which obtains the [OH aq ] by measuring a stable material formed through a rapid reaction between the molecular probe and the OH aq . In this study, we used disodium terephthalate (NaTA) as the molecular probe; the experimental results with a theoretical analysis suggest that to obtain the correct OH aq concentration, the concentration of the molecular probe should be greater than a certain value, which depends on the types of the plasma–liquid systems. However, this is not the case in most of the existing reports in which the NaTA is often much less than the requisite value.
研究领域:
化学
·
等离子体物理
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING & TECHNOLOGY
·
2022
·Vol. 45
·期 4
·678-686
·
IF 2.215
Guijun Zhu,Jianxin Chen,Jian Han,Jihui Li,Yupeng Li,Kaili Liu
5-Sulfoisophthalic acid sodium salt (5-SSIPA) is a crucial intermediate for pharmaceuticals, pesticides, and polyesters. Several acidic groups lead to an unstable crystal structure. Two new polymorphs and three novel solvates were identified during the solvent screening. These crystals were characterized by powder X-ray diffraction, Fourier transform infrared, and scanning electron microscopy. The desolvation temperature of solvates was found to be higher than the boiling point of pure solvents, which tentatively indicated the existence of an interaction between solvents and 5-SSIPA molecules. The phenomenon that the three solvates gradually darkened with desolvation in the hot-stage microscopic images proved the occurrence of crystal desolvation. The non-isothermal desolvation kinetics of the 5-SSIPA solvates was analyzed and discussed.
研究领域:
材料化学
·
药物化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）