Table of Content

22 October 2019, Volume 49 Issue 10 Previous Issue    Next Issue

Basic research

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Study on the stability of CO2 foam by multiple light scattering method KANG Wan-li,HUANG Zi-tong,YANG Hong-bin,YIN Xia,ZHU Tong-yu,ZHANG Xiang-feng 2019, 49 (10):  627-632.  doi: 10.3969/j.issn.1001-1803.2019.10.001 Abstract ( 334 )   HTML ( 11 )   PDF (1259KB) ( 787 )   CO2 foam is constantly generated and destroyed during the process of flowing in the reservoir, and the gas channeling capacity of foam depends on its stability which is an important evaluation index of foam flooding. A method based on multiple light scattering to study the stability of foam has been established, in which the small changes in foam defoaming and liquid drainage in different periods can be reflected by the intensity changes of transmitted light and backscattered light. The microscopic mechanisms of foam collapse were explored, and a method for quantitatively calculating the half-life of a foam system by TSI was proposed. In addition, the CO2 foam stabilized by anionic-nonionic surfactant SS163 and its mixture with nanoparticles were prepared, and the foam stability was compared by multiple light scattering method and Warning-Blender method. The results demonstrate that multiple light scattering method has advantages such as more precise temperature control and no influence of external air flow, which is a foam evaluation method with high accuracy and repeatability. Figures and Tables | References | Related Articles | Metrics

Lecture of science and technology

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Interactions between surfactants and nanoparticles and theconstruction of smart systems（IV）Interactions between nanoparticles and nonionic surfactantsConstruction of temperature-responsive Pickering emulsionsvia hydrogen bonding ZHANG Wan-qing,JIANG Jian-zhong,CUI Zheng-gang 2019, 49 (10):  633-642.  doi: 10.3969/j.issn.1001-1803.2019.10.002 Abstract ( 416 )   HTML ( 8 )   PDF (2519KB) ( 590 )   In aqueous media, the surfaces of most commercial inorganic nanoparticles are not only charged but also distributed with a large amount of hydroxyl groups. On the one hand, these hydroxyl groups make the particle surfaces strongly hydrophilic, and on the other hand, they provide abundant sites, enabling the formation of hydrogen bonding with polyoxyethylene（EO）group. Therefore, the nonionic surfactants containing EO group can adsorb at the particle/water interface with EO chains on particle surface and the alkyl chains oriented toward water, forming a hydrophobic monolayer and producing hydrophobization in situ to the particle surfaces. Since hydrogen bonding is temperature sensitive（i.e. it is easy to be established and stable at low temperature, but is weakened and even broken at high temperature）, it is possible to obtain switchable surface-active inorganic nanoparticles triggered by temperature by means of hydrogen bonding. Herein, it will be discussed that how to construct temperature-responsive Pickering emulsions by using nonionic surfactants in combination with common inorganic nanoparticles such as silica nanoparticles via hydrogen bonding interaction. Figures and Tables | References | Related Articles | Metrics

Development and application

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Analysis of different influencing factors on the content ofdioxane in sodium fatty alcohol ether sulphate duringstorage based on SPSS multiple linear regression XU Kun-hua,QU Xiao-ni,GE Zan,LEI Xiao-ying,TAO Hua-dong,LI Fu-yi 2019, 49 (10):  643-648.  doi: 10.3969/j.issn.1001-1803.2019.10.003 Abstract ( 443 )   HTML ( 6 )   PDF (1061KB) ( 501 )   Based on the results obtained from single factor experiments and in combination with multiple linear regressions, the influences of different factors on the content of dioxane in sodium fatty alcohol ether sulphate（AES）were investigated. The results show that the dioxane content in AES is positively correlated with EO number, temperature, pH and time during storage, i.e., more dioxane exists in the case of larger EO number, higher temperature, higher pH or longer time. According to the analysis with multiple linear regression, the contributions of the 4 factors to the increase of dioxane in AES are ranked as follows: EO number>pH>time>temperature. Sunshine has a slight influence on the increase of dioxane content. Figures and Tables | References | Related Articles | Metrics

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Study on antibacterial property of clove complex extracted by different solvents LOU Shu-qin,XIA Wei,CHEN Lin-xiao,SONG Jin-xing,SUN Yi-shuo,ZHANG Wen-qing 2019, 49 (10):  649-655.  doi: 10.3969/j.issn.1001-1803.2019.10.004 Abstract ( 529 )   HTML ( 37 )   PDF (1264KB) ( 451 )   The antibacterial activity, antibacterial mechanism and application in the cosmetics of clove complex extracted by different solvents were explored. Inhibition zone, minimum inhibitory concentration（MIC）and fractional inhibitor concentration（FIC）were determined to show the antibacterial activity of clove extracts. The results show that the FIC of the combination of ethyl acetate extract（C-EA）and n-hexane extract（C-NH）of clove is less than 1, which has synergistic or additive effects on the tested bacteria. When the ratio of the two is 1∶1（g ∶g）, the antibacterial effect of clove complex（C-C1∶1）is the best. The antibacterial mechanism of C-C1∶1 was inferred through the growth inhibition curve and scanning electron micrograph of microorganisms. The results show that the main inhibition mechanism of C-C1∶1 to the tested bacteria is in its logarithmic growth and stable period. It is inferred that C-C1∶1 can cause the deformation of the bacteria by destroying the cell wall structure, thus achieving the bacteriostasis and sterilization effect. The antibacterial effect of C-C1∶1 in the cosmetics was determined via the preservative efficacy challenge test. The results show that 4.76 g/L of clove complex can pass the test, which is superior to the same mass concentration ofphenoxyethanol. Figures and Tables | References | Related Articles | Metrics

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Study on the anti- UVB-induced photoaging and damage of human dermal fibroblasts by polysacchride extract from Hyriopsis cumingii CHEN Xin-xin,LUO An-ling,LI Jia-luo,ZHENG You-li,CONG Feng-song 2019, 49 (10):  656-660.  doi: 10.3969/j.issn.1001-1803.2019.10.005 Abstract ( 311 )   HTML ( 12 )   PDF (1020KB) ( 512 )   Human dermal fibroblasts（HDF-a）and UVB（306 nm）were used to construct a skin photoaging model. The anti-photoaging ability of polysacchride extract from Hyriopsis cumingii（HCP）was investigated by using this model, and its effects on inhibiting oxidative damage and inflammation injury were evaluated respectively. Results show that HCP with mass concentration of 0.1,1 and 10 g/L can significantly improve the survival rate of photoaging and damage HDF-a , up to 86.63%. In terms of inhibiting oxidative damage, the extract can effectively increase intracellular SOD activity and GSH content and reduce MDA content, and enhance the ability of cells to scavenge free radicals. In terms of alleviating inflammation, the extract can block the NF-κB signaling pathway and inhibit the release of inflammatory factors such as IL-6. Figures and Tables | References | Related Articles | Metrics

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Preliminary purification and anti-aging activity evaluation of total flavonoids prepared from sea-buckthorn seed meal by fermentation YOU Shi-quan,WANG Chang-tao,ZHANG Jia-chan,LI Meng,ZHAO Dan,AN Quan 2019, 49 (10):  661-667.  doi: 10.3969/j.issn.1001-1803.2019.10.006 Abstract ( 344 )   HTML ( 14 )   PDF (1298KB) ( 743 )   The fermentation extract of sea-buckthorn seed meal was purified by macroporous adsorption resin. The technological conditions in the purification process were studied, as well as the anti-aging activity of the extract. The effects of separation and purification of three macroporous adsorption resins were compared. The optimum separation conditions with X-5 macroporous resin were investigated. The effect of the extract on cell growth was evaluated by MTT method. The anti-aging activity of the extract was evaluated by DPPH method, the inhibition of the activities of intracellular reactive oxygen species and MMP-1, and the promotion of collagen synthesis. The results show that the optimum process conditions: adsorption time of 2 h, adsorption temperature of 15 ℃, eluent volume fraction of 60%, elution time of 2.5 h, and elution temperature of 45 ℃. Under such conditions, the adsorption amount could reach 2.33 mg/g, and the resolution rate could reach 94.75%. The MTT experiment showed that it had no toxic side effects on fibroblasts; the mass concentration when the DPPH radical scavenging rate reaches 50%（IC50）was 1.06 mg/L; the level of reactive oxygen species decreased significantly; the MMP-1activity was decreased; the collagen content was increased. The fermentation broth of sea-buckthorn seed meal showed good anti-aging activity. Figures and Tables | References | Related Articles | Metrics

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Evaluation of anti-aging and anti-inflammatory effects of four beevenoms in vitro by HDF and HUVEC cell models LIU Yin-kang,ZHANG Gen-sheng,HUANG Guo-zhong,CHEN Ji-kuan,ZHANG Hong-cheng 2019, 49 (10):  668-673.  doi: 10.3969/j.issn.1001-1803.2019.10.007 Abstract ( 406 )   HTML ( 11 )   PDF (1019KB) ( 479 )   To investigate the anti-aging effects of Vespa mandarinia Smith, Vespa bicolor Fabricius, Xylocopa（Nyctomelitta） tranquebarica and Apis mellifera venom in vitro, type I collagen（Col-I） and matrix metalloproteinase（MMP-1） secreted by human dermal fibroblasts（HDF） was detected. And in order to explore the anti-inflammatory effects of Vespa mandarinia Smith, Vespa bicolor Fabricius, Xylocopa（Nyctomelitta） tranquebarica and Apis mellifera venom in vitro, the inflammatory factors nitric oxide（NO）, human interleukin-6（IL-6） and human interleukin 8（IL-8） secreted by lipopolysaccharide（LPS）-induced human umbilical vein endothelial cells（HUVEC） were detected. The results show that when the concentration of Vespa mandarinia Smith and Vespa bicolor Fabricius venom is 10 mg/L, the contents of MMP-1 secreted by HDF cells decrease by 26.03% and 43.64%, while the contents of Col-I increase by 24.62% and 30.31%, respectively. After stimulation of HUVEC cells by four bee venoms, the contents of inflammatory cytokines secreted by cells are reduced. At 5 mg/L, the content of IL-6 is reduced by 62% compared with the model group. When the concentration of bee venom is 10 mg/L, its inhibitory effect on IL-8 secretion is the most obvious, which reduces the content of IL-8 by 68% in the model group. In summary, four bee venoms have anti-inflammatory effects, but only Vespa mandarinia Smith and Vespa bicolor Fabricius venom have anti-aging effects. Figures and Tables | References | Related Articles | Metrics

Reviews

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Application prospect of six common Chinese herbal medicines inanti-hair loss products YUAN Yang-ming,ZENG Yan-sheng,MAO Shan-qiao 2019, 49 (10):  674-680.  doi: 10.3969/j.issn.1001-1803.2019.10.008 Abstract ( 594 )   HTML ( 27 )   PDF (1068KB) ( 1579 )   The mechanism of hair loss was reviewed. The medicinal value of Zingiber officinale Roscoe, Anemarrhena asphodeloides, Carthamus tinctorius（L.）, Panax ginseng（C. A. Mey.）, Biota orientalis and Resina draconis was also analyzed. Finally, the application of these six Chinese herbal medicines in anti-hair loss products was prospected. The aim was to provide reference for the research of anti-hair loss products of Chinese herbal medicine. Figures and Tables | References | Related Articles | Metrics

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Progress in preparation of nanostructured lipid carriersand its application in cosmetics LIU Qing-xia,XU Meng-yi,WEN Zi-min,ZHU Yong-chuang,GONG Sheng-zhao,ZHANG Yong 2019, 49 (10):  681-687.  doi: 10.3969/j.issn.1001-1803.2019.10.009 Abstract ( 808 )   HTML ( 64 )   PDF (802KB) ( 1209 )   The structural features and preparation technology of nanostructured lipid carrier（NLC）were reviewed. The role and adding forms of NLC in cosmetics were summarized. The research status of NLC as sunscreen carrier, active substance carrier and sustained release carrier in cosmetics was introduced. Furthermore, development outlook of NLC was prospected． Figures and Tables | References | Related Articles | Metrics

Analytical methods and testing

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Simultaneous determination of 19 amino acids in cosmetics byliquid chromatography-tandem mass spectrometry ZHOU Jin-bo,ZHU Zhi-jia 2019, 49 (10):  688-693.  doi: 10.3969/j.issn.1001-1803.2019.10.010 Abstract ( 445 )   HTML ( 12 )   PDF (855KB) ( 326 )   A method for the determination of 19 amino acids in cosmetics by liquid chromatography-tandem mass spectrometry with pre-column derivation was established. The samples were mixed with activated carbon and a small amount of water, heated, sonicated, centrifuged and then made up to a fixed volume with water. Then separated by Sharpsil-H C18（2.1 mm×100 mm×3 μm）column. The acetonitrile- ammonium acetate system was used as mobile phase, with gradient elution, electrospray positive ion-multiple reaction mode detection. The results show that the linear relationship is good with the concentration of amino acid in the range of 0.005-100 mg/L. The correlation coefficient was 0.991 7-0.999 9.The detection limits of 19 amino acids ranged from 1 to 15 μg/L, and the recovery rates of cosmetic samples were 83.4%-93.6%. Figures and Tables | References | Related Articles | Metrics

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Simultaneously determination of monochloroacetic acid, dichloroacetic acid and glycollic acid in cocamidopropyl betaine by UPLC-Q-TOF-MS HUANG Fang,WANG Yu-qin,DENG Xin,XIE Shu-tong,HUANG Xiao-lan,WU Hui-qin 2019, 49 (10):  694-698.  doi: 10.3969/j.issn.1001-1803.2019.10.011 Abstract ( 564 )   HTML ( 9 )   PDF (861KB) ( 801 )   A method based on ultra-high performance liquid chromatography with quadrupole time-of-flight mass spectrometry（UPLC-Q-TOF-MS） had been developed for the simultaneous determination of monochloroacetic acid, dichloroacetic acid and glycollic acid in cocamidopropyl betaine surfactant. The samples were dissolved by water, then purified by solid phase extraction and separated by a core-shell sub-3 μm column Agilent Poroshell 120 EC-C18（3.0 mm×100 mm×2.7 μm） with a gradient elution of 0.1% formic acid and acetonitrile. Under electrospray ion source negative ion full scan mode, the extracted accurate ion was used to do qualitative and quantitative determination. The results show that the linearity of the three compounds is good in a certain concentration range, and the correlation coefficients are greater than 0.998.The average recovery of the three levels ranges from 71.1% to 92.2%, and the relative standard deviation（RSD） is less than 15%. The detection limits of the optimized method are 0.25 mg/kg for monochloroacetic acid, 0.025 mg/kg for dichloroacetic acid and10 mg/kg for glycollic acid. Figures and Tables | References | Related Articles | Metrics