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Dong Shangwei Sun Lin Yue Fangyu 《Journal of Materials Science: Materials in Electronics》2022,33(13):10335-10342
Journal of Materials Science: Materials in Electronics - The influences of the selenium (Se) growth condition on the electronic level structure including deep defects and further on the... 相似文献
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目的:制备火麻仁油微乳凝胶补水面膜并对其理化性质、保湿性和抗氧化活性进行评价.方法:通过伪三元相图确定火麻仁油微乳最佳处方,采用单因素及正交试验优化火麻仁油微乳凝胶处方,载入保湿活性物质制得火麻仁油微乳凝胶面膜并对其质量、稳定性、保湿性和抗氧化活性进行评价.结果:火麻仁油微乳最佳处方:火麻仁油0.2%、PEG-20氢化蓖麻油0.53%、1,3丙二醇0.27%.火麻仁油微乳凝胶最佳处方为卡波姆-940含量1%,丙三醇含量5%,稀释倍数30倍.制得的微乳凝胶澄清透明、涂展性较好、易清洗、不油腻;平均粒径为(30.91±0.31)nm,PDI为0.299±0.017,电位为(-3.54±0.43)mV;黏度为494725.15 mPa·s;pH值为5.50±0.01;保湿效果优于市售某凝胶面膜;火麻仁油微乳凝胶面膜对DPPH自由基清除率高于火麻仁油毛油,质量浓度为6 mg·mL-1时可达62.39%,IC50为3.71 mg·mL-1.结论:火麻仁油微乳凝胶面膜安全、稳定,制备工艺简单,对皮肤具有良好的补水和抗氧化效果,具备开发和推广的价值. 相似文献
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Qiang Zhang Zhengya Dong Zhikai Liu Guangwen Chen 《American Institute of Chemical Engineers》2022,68(8):e17689
This study aims to investigate the effect of ultrasonic waveforms on the gas–liquid mass transfer process. For a given load power (P), continuous rectangular wave yielded stronger bubble oscillation and higher mass transfer coefficient (kLa) than continuous triangular and sinusoidal wave. For pulsed ultrasound, the kLa decreased monotonically with decreasing duty ratio (D), resulting in weak enhancement at low D (≤33%). For a given average load power (PA), concentrating the P for a shorter period resulted in a higher kLa due to stronger cavitation behavior. For a given PA and D, decreasing the pulse period (T) led to an increase in kLa, which reached a constant high level when the T fell below a critical value. By optimizing the D and T, a kLa equivalent to 92% of that under continuous ultrasound was obtained under pulsed ultrasound at a D of 67%, saving 33% in power consumption. 相似文献
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Zhenzhen Huang Xinxi Yang Qiqi Chen Leqi Chen Siyue Liang Qingzhu Zeng Ruifen Zhang Fei Huang Lihong Dong Dongxiao Su 《International Journal of Food Science & Technology》2022,57(5):3060-3068
This study aims to fabricate mineral-loading nanocarriers using natural materials. The interaction patterns between ovalbumin (OVA) and four water-soluble polyphenols, namely ferulic acid (FA), (-)-Epigallo-catechin 3-gallate (EGCG), gallic acid (GA) and epicatechin (EC), were investigated. Results showed that the optimised conditions for preparing stable OVA–polyphenol complexes are at the OVA–polyphenol ratio of 4:1 at pH 6, under which OVA–FA and OVA–EGCG showed the highest stability and mineral-loading capacity among four OVA–polyphenol complexes. The fluorescence results indicated that the addition of EGCG and FA induced a significant fluorescence quenching to OVA. The interaction between OVA and polyphenols involved hydrogen bonding, hydrophobic interaction and electrostatic interaction. Fourier transform infrared spectroscopy (FTIR) analysis suggested that both FA and EGCG enhanced the stability and orderliness of the structure of OVA. The transmission electron microscopy images also exhibited the spherical structure of OVA after the addition of FA and EGCG. Furthermore, scanning electron microscope–energy dispersive X-ray spectrum results suggested that OVA–FA and OVA–EGCG complexes were better mineral carriers than OVA–GA and OVA–EC. This study may serve as the theoretical support for the promising application of OVA in the fabrication of mineral-loading nanocarriers in functional food and pharmaceutic. 相似文献
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