ACS Sustainable Chemistry & Engineering
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2025
·
IF 7.3
Xinxin Deng,Xinxin Yan,Weijun Yang,Fengshan Zhang,Yanshao Liu,Hao Ren,Junlong Song,Huining Xiao,Jiaqi Guo
Developing biomass-based packaging materials to replace plastic packaging materials is an inevitable trend for the food packaging area. Here, dialdehyde starch (DAS) was synthesized by oxidation of cassava starch using sodium periodate as the oxidizing agent, and then the waterproof and oil-resistant wrapping paper was prepared by coating DAS onto the surface of Kraft paper. The effect of the aldehyde content on the barrier properties of dialdehyde starch film and coated Kraft paper was studied. The results showed that the coated Kraft paper with 5 wt % DAS (aldehyde content of 98%) had the best comprehensive water and oil resistance, with an oil resistance grade of 10 and a Cobb60 value of 1.9 g/m2, which was significantly lower than that of the control sample (25.7 g/m2). In addition, the tensile energy absorption index (TEA*) was also improved from 17.6 to 123.4 J/g. Finally, coated Kraft paper was used to wrap burgers, fries, petit fours, etc., and the results showed excellent all-around performance, including barrier properties, mechanical strength, etc. The developed barrier technology has great potential in the food packaging industry.
研究领域:
生物材料学
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食品科学
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DOI
高影响因子
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
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2013
·Vol. 30
·期 4
·1251-1260
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IF 1.262
Zhou Gang,Shi Qing-shan,Ouyang You-sheng,Chen Yi-ben
Isothiazolones are used as preservatives in various modern industrial products. Although microorganisms that exhibit resistance towards these biocides have been identified, the underlying resistance mechanisms are still unclear. Therefore, we investigated the resistance properties of the following Burkholderia cepacia strains to Kathon (a representative of isothiazolones): a wild-type (WT) strain; a laboratory resistance strain (BC-IR) induced from WT; and an isolated strain (BC-327) screened from industrial contamination samples. The bacterial cell structure was disrupted by 50 μg ml −1 Kathon treatment. BC-IR and BC-327 did not display resistance in the presence of 1 ml L −1 Tween 80, 1 ml L −1 Triton X-100, 0.1 % sodium dodecyl sulfate or 1 mmol L −1 EDTA-2Na. Additionally, BC-IR and BC-327 exhibited lower relative conductivity from 10 to 180 min. The types as well as the levels of outer-membrane proteins (OMPs) were altered among WT, BC-IR and BC-327. Finally, the two Kathon-resistance strains BC-IR and BC-327 presented higher resistance capacity to H 2 O 2 . We measured the levels of peroxide-sensor genes and observed that the transcriptional activator oxyR , superoxide dismutase sod1 , sod2 , catalase cat1 and cat3 were all up-regulated under oxidative conditions for all strains. Taken together, OMPs and peroxide-sensor genes in B. cepacia contributed to isothiazolone resistance; However, the laboratory strain BC-IR exhibited a different resistance mechanism and properties compared to the isolated strain BC-327.
研究领域:
微生物学
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分子生物学
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工业生物技术
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF PHARMACEUTICS
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2019
·
IF 4.213
Tao-Tao Fu,Zhao-Qing Cong,Yun Zhao,Wei-Ya Chen,Chun-Yu Liu,Ying Zheng,Fei-Fei Yang,Yong-Hong Liao
This study intended to investigate the in vivo pulmonary fate of intratracheally dosed nanosuspensions of fluticasone propionate (FP). Three FP suspensions, including a microsuspension and two nanosuspensions with different dissolution profiles, were prepared and they exhibited comparable aerodynamic performances after nebulization via a jet nebulizer . Following intratracheal administration to rats, the microsuspension underwent extensive mucociliary clearance, leading to a limited absorption time whereas the nanosuspensions decreased the mucociliary clearance and allowed dissolution rate-limiting and extended pulmonary absorption, resulting in prolonged pulmonary retention and long-acting anti-inflammatory efficacy in a lipopolysaccharide induced lung injury model. Delaying the FP dissolution of a nanosuspension by phospholipid coating increased AUC value in lung tissues to 1.72-fold of a conventional nanosuspension, but led to a decreased pharmacological efficacy. This study demonstrated that inhalable nanosuspensions were a feasible means for the sustained pulmonary delivery of FP and the local anti-inflammatory efficacy was highly dependent on the dissolution profiles.
研究领域:
药剂学
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药理学
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纳米技术
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呼吸医学
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DOI
PubMed
高影响因子
JOURNAL OF SURFACTANTS AND DETERGENTS
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2023
·Vol. 26
·期 6
·827-842
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IF 1.6
Huinan Wu,Bo Fang,Luyao Yu,Jinlan He,Wenting Xu,Hui Xin,Zhenrui Tian,Xiaoyang Han,Yongjun Lu,Ke Xu
To enrich the clean fracturing fluid system with high temperature resistance, a novel tetrameric cationic surfactant (TET) was developed and used as a thickener and mixed with different concentrations of sodium salicylate (NaSal) to obtain a new clean fracturing fluid. The flow curves, thixotropy, viscoelasticity, temperature resistance property, and proppant-suspending capacity were further investigated. The rheological study showed that the Casson model could be used to accurately describe the flow curve of TET/NaSal micelle solutions and the addition of NaSal improved the thixotropy and viscoelasticity of surfactant solution. The optimal mass ratio of TET/NaSal solution was 5/1.5 wt%, and it had good proppant-suspending capacity. What is more, the retained viscosity of TET/NaSal (5/1.5 wt%) solution was 52.27 mPa·s after shearing at 140°C and 100.0 s −1 for 65 min, which met industry requirements (viscosity > 20 mPa·s) of viscoelastic surfactant fracturing fluids. Moreover, the combination of 10 wt% TET aqueous solution with pH value of 8.51 and 2.6 wt% salicylic acid (HSal) suspension of the same mass significantly delayed micellar formation. The four-parameter rheo-kinetics model can be used to fit the viscosity curves of micellar formation, which provided the rheological basis for the study of delayed viscoelastic micellar formation.
研究领域:
石油工程
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化学工程
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材料科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）