Table of Content

22 April 2015, Volume 45 Issue 4 Previous Issue    Next Issue

Basicresearc

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Study on the properties of blend system of sodium fatty alcohol ether carboxylate and bis-decylmethylhydroxyethylammonium chloride LIU Xiao-ying, TAI Xiu-mei, DU Zhi-ping, WANG Guo-yong, ZHAO Hui-xian, WANG Tian-zhuang 2015, 45 (4):  181-184.  doi: 10.13218/j.cnki.csdc.2015.04.001 Abstract ( 307 )   PDF (1519KB) ( 368 )   Surface activity,stability and aggregation behavior of blend systems of sodium fatty alcohol ether carboxylate (AE9C) and bis-decylmethylhydroxyethylammonium chloride (DEQ) were measured by surface tensiometer,UV-Vis spectrophotometer and transmission electron microscopy (TEM),respectively.Results showed that the blend system that displays best synergistic effect is at the mass ratio of m(AE9C)∶m(DEQ)=4∶6,which displays Γmax=2.15×10-10 mol/cm2,Amin=0.77 nm2.The blend system shows very excellent stability.When the mass ratio of AE9C and DEQ is bigger than 5∶5,even if the mass concentration achieves 10.0%,uniform and stable solutions are formed and the solutions can keep its homogeneity without stratification after a month.When the mass fraction is 4.0% with m(AE9C)∶m(DEQ)=4∶6,a solution with fixed viscosity is formed and TEM test results depicted random arrangement of rod-like aggregates. References | Related Articles | Metrics

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Preparation of stable Pickering emulsions by alginate derivative prepared via Ugi reaction in cooperation with hydrophobically modified kaolin CHEN Xiu-qiong, YAN Hui-qiong, LI Jia-cheng, FENG Yu-hong, SHI Zai-feng, WANG Xiang-hui, LIN Qiang 2015, 45 (4):  185-190.  doi: 10.13218/j.cnki.csdc.2015.04.002 Abstract ( 223 )   PDF (2044KB) ( 317 )   Amphiphilic alginate derivative (Ugi-Alg) was prepared via Ugi reaction of hydrophobically modified sodium alginate (Alg).The kaolin (KL) particle's surface was hydrophobically modified with dry ball milling method,using poly (methyl hydrosiloxane) (PMHS) as hydrophobic modifying agent.Then the properties of the modified products were characterized by FTIR,1HNMR,contact angle measurement,laser particle size measurement and Zeta potential analyzer.The stable Pickering emulsions were prepared by the modified kaolin (MKL) in cooperation with Ugi-Alg and effects of pH of the water phase on the morphological characteristics and the emulsions' droplet size of the Pickering emulsions were investigated.Experimental results showed that the hydrophobic modification of Alg by Ugi reaction is successful.PMHS is adsorbed on the surface of KL under the mechanical action of the ball milling,making MKL become the active particle with high hydrophobic property.Ugi-Alg is coordinately adsorbed on the particle's surface of MKL under action of ultrasonic wave,changing the wettability of MKL particles' surface,which could effectively improve the stability of the Pickering emulsions.As the raising of pH of the water phase,droplet size of the MKL/Ugi-Alg Pickering emulsions is gradually declined.When the pH achieves 10.32,the emulsions' droplet size reaches 7.4 μm. References | Related Articles | Metrics

Lectureofscienceandtechnolog

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Performance and applications of surfactants (XVI) Applications of surfactants in food industry HU Jun, LIU Hong-qin, XU Bao-cai, ZHAO Li 2015, 45 (4):  191-195.  doi: 10.13218/j.cnki.csdc.2015.04.003 Abstract ( 394 )   PDF (884KB) ( 569 )   Based upon the structure and applications of surfactant,the functional mechanism of surfactant which was used as food emulsifiers,solubilizers,foaming and defoaming agents as well as thickeners were reviewed.Meanwhile,the applications of surfactants in the food industry were summarized.The development and future applications of edible surfactants were prospected as well. References | Related Articles | Metrics

Developmentandapplicatio

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Preparation and stability of acrylamide inverse-phase emulsion with impinging stream-rotating packed bed reactor LI Xiao-yue, ZHANG Qiao-ling, LI Lei, WEI Bing, LIU You-zhi 2015, 45 (4):  196-200.  doi: 10.13218/j.cnki.csdc.2015.04.004 Abstract ( 309 )   PDF (1059KB) ( 422 )   Acrylamide inverse-phase emulsion was prepared with kerosene as organic medium,sorbitan monooleate (Span 80) and alkylphenol polyoxyethylene ether (OP-10) as blended emulsifier,as well as impinging stream-rotating packed bed reactor as emulsification equipment.Effect of super gravity factor,impinging speed,volume ratio of oil to water,mass fraction of emulsifier,HLB value of the blended emulsifier and mass fraction of acrylamide monomer content on stability of the emulsion was studied.Comparison was made with that obtained with stirring emulsification device.Results showed that at the conditions of 65.32 super gravity factor;12.58 m/s impinging speed;1∶1 volume ratio of oil to water;5% mass fraction of emulsifier in total emulsion;6.0 HLB value of the blended emulsifier and mass fraction 15% of acrylamide monomer in water solution,the average emulsion particle size of the emulsion achieves 664 nm,and stability coefficient can achieve 0.973.Comparison study showed that stability,particle size and dispersion of emulsion prepared with impinging stream-rotating packed bed reactor is better,emulsification time is shorter,and the preparation process of the emulsion is continuous. References | Related Articles | Metrics

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Fabrication of SiO2 nano-hollow spheres with CTAB as template agent in water-acetone media ZHANG Jin-chang, SHI Lei, GUO Xin-wen, LIU Zhao-bin, ZHU Jian-min 2015, 45 (4):  201-205.  doi: 10.13218/j.cnki.csdc.2015.04.005 Abstract ( 276 )   PDF (1281KB) ( 329 )   Mesoporous solid spheres were synthesized in water-acetone media using cetyltrimethylammonium bromide as the template agent under condition of water-to-acetone molar ratio lying between 1 and 15.Then SiO2 nano-hollow spheres with micropore structure were synthesized from the mesoporous solid spheres by hydrothermal treatment with n-butylamine as template agent.Results showed that the solid spheres are converted into hollow spheres in crystallization time of 48 h,and diameter of the hollow spheres lying between 600 and 800 nm in size with shell thickness of ca.70 nm and pore size of ca.0.47 nm. References | Related Articles | Metrics

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Preparation of anti-caking agent using vegetable oil as raw material XUE Yuan, ZHANG Li, CHENG Liang, ZHANG Bao-lin 2015, 45 (4):  206-209.  doi: 10.13218/j.cnki.csdc.2015.04.006 Abstract ( 302 )   PDF (812KB) ( 460 )   An environmentally friendly anti-caking agent product was prepared with vegetable oil and non-ammonium salt surfactant as raw materials.Anti-caking efficacy of the product was tested by accelerated compression stacking simulation method.Test results showed that in case the mass ratio of the materials is m(anti-caking agent product)∶m(blended fertilizer)=5∶1 000,and mass ratio for composition of the anti-caking agent product is m(PEG 2000+PDMS)∶m(polysorbate B)=1∶2 and m(blended surfactants)∶m(vegetable oil)=1∶100,the caking ratio achieves the lowest as 9.0%,which is better than that of conventional anti-caking agents made of machine oil and ammonium compounds. References | Related Articles | Metrics

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Synthesis of 4,4′-dicarboxylbenzophenone with phase transfer catalysis ZHANG Yan-jie, JIANG Wen-wei, YANG Qin, LUO Qin 2015, 45 (4):  210-213.  doi: 10.13218/j.cnki.csdc.2015.04.007 Abstract ( 308 )   PDF (878KB) ( 306 )   4,4′-Dimethylbenzophenone (4,4′-DMBP) was synthesized with p-toluoyl chloride and toluene as starting materials and anhydrous AlCl3 as catalyst through Friedel-Crafts acylation reaction.Then the 4,4′-DMBP was further oxidized by potassium permanganate in the presence of phase transfer catalyst (PTC) Aliquat 336 (trioctylmethylammonium chloride) and 4,4′-dicarboxylbenzophenone was synthesized as product.The product was characterized by HPLC,FTIR,1HNMR and 13CNMR.Effects of different factors,such as the activity of separate PTC,dosage of PTC,reaction temperature,dosage of potassium permanganate and water on the reaction yield were investigated.Results indicated that under neutral conditions,in the water at 95 ℃ by keeping the mole ratio of potassium permanganate to 4,4′-DMBP as 8.5∶1;the mass ratio of 4,4′-DMBP to water as 3∶200;dosage of Aliquat 336 as 10% (mole ratio) of 4,4′-DMBP,the reaction yield of the product achieves 85.84%. References | Related Articles | Metrics

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Preservative efficacy and safety evaluation of antiseptic-free skin care cosmetics LIU Wen-juan, CHANG Zhi-ying 2015, 45 (4):  214-217.  doi: 10.13218/j.cnki.csdc.2015.04.008 Abstract ( 505 )   PDF (813KB) ( 847 )   Preservative efficacy and safety property of SymDiol 68T+SymTriol and probiotics Leucidal Liquid SF were examined separately and compared with performance of the traditional antiseptics LGP.Results showed that inhibitive power of the blend system with SymDiol 68T+SymTriol against mixed bacteria is better than that of mixed fungi.Inhibitive power of natural antiseptics probiotics against mixed bacteria and against fungi is basically equivalent.Inhibitive power of both blend system SymDiol 68T+SymTriol and probiotics are lower than that of LGP.On the 7th day of preservative efficacy challenge test,amount of both mixed bacteria and mixed fungi in two kinds of day cream and essence liquid without antiseptics are less than 10 cfu/g.The irritation to skin of the three kinds of essence liquid decreases in the order of:LGP>SymDiol 68T+SymTriol>probiotics Leucidal Liquid SF. References | Related Articles | Metrics

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Study on ultraviolet irradiation resistance effect of mandshurin CHEN Yu-juan, LI Cheng-yu, WANG Wei, ZHONG Zi-tao 2015, 45 (4):  218-220.  doi: 10.13218/j.cnki.csdc.2015.04.009 Abstract ( 383 )   PDF (797KB) ( 322 )   Protection action of mandshurin with respect to human skin fibroblastic strain (HSF) caused by ultraviolet irradiation as well as sunscreening performance of its formulated product was investigated via volunteers' body test method.Results showed that,as compared with the control group that is cultivated under conventional way,under same other conditions,the ultraviolet irradiation suppresses the growth of HSF significantly,while the addition of mandshurin improves the growth of HSF apparently.Via volunteers' body tests,the sun protection factor (SPF) of mandshurin sunscreening cosmetic cream was measured as 16 in-vivo.Obviously mandshurin sunscreening cosmetic cream displays good ultraviolet resistance action conspicuously.Hopefully,mandshurin might be added into cosmetics as sunscreening agent to resist ultraviolet irradiation of moderate sunshining. References | Related Articles | Metrics

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Application of Fourier transform attenuated total reflection infrared spectrometry in the identification of sunscreening cosmetics SUN Ting, MU Tong-na, YU Xiao-jin, YANG Hong-mei, ZHAO Li, WU Yan-tao 2015, 45 (4):  221-225.  doi: 10.13218/j.cnki.csdc.2015.04.010 Abstract ( 285 )   PDF (942KB) ( 398 )   Samples of six sunscreening cosmetic product of same brand and series but collected from separate distribution channels were analyzed with Fourier transform attenuated total reflection infrared spectrometry (ATR-FTIR).At the same time the variety and content of sunscreening agent in the cosmetic products were detected by high performance liquid chromatography (HPLC).Results showed that,in the FTIR spectra,there are quite big differences among the structure of main functional group of the sunscreening agent in the cosmetic product of same brand and series but collected from separate distribution channels.Further,the differences are quite conspicuously correlated with the variety and content of the sunscreening agent in the cosmetics detected by HPLC. References | Related Articles | Metrics

Review

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Application of processing technique in developing plant materials in formulation of cosmetic products DENG Xiao-feng, MENG Hong, LI Li, LIU You-ting, DONG Yin-mao 2015, 45 (4):  226-229.  doi: 10.13218/j.cnki.csdc.2015.04.011 Abstract ( 318 )   PDF (922KB) ( 441 )   Methods used in processing technique of Chinese traditional herb medicine were briefed.Processing technique used for enrichment of substances with functional actions such as anti-senility,whitening,anti-allergy et al.in plant materials for purpose of efficacy upgrading were emphatically described.Prospects and existing problems in developing plant materials for cosmetic uses were summarized finally,which offers scientific bases for applying processing technique in using plant materials for cosmetic formulation. References | Related Articles | Metrics

Analyticalmethodsandtestin

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Determination of nitrate salts and nitrite salts in amine oxides by ion chromatography LIU Zhen-hua, ZHANG Yong 2015, 45 (4):  230-232.  doi: 10.13218/j.cnki.csdc.2015.04.012 Abstract ( 275 )   PDF (796KB) ( 321 )   A method for the simultaneous determination of nitrate salts and nitrite salts in amine oxides by ion chromatography was established.The amine oxide sample was pre-treated with IC-C18 reverse phase adsorption column and 0.45 μm micro-pore filter membrane,and then loaded into a high-performance anion exchange column with a mixed solution composed of 4.0 mmol/L Na2CO3 and 1.2 mmol/L NaHCO3 as eluant and detected with a suppressed conductivity detector.Results showed that good linear relationship displays within the range of nitrate and nitrite mass concentration between 0.1-10.0 mg/L with correlation coefficients (R2) more than 0.999 9.The detection limits of nitrate and nitrite were identified as 0.035 and 0.028 mg/L respectively.The relative standard deviations (RSD,n=7) lie 0.46%-2.24%.The spiked recoveries lie 94.3%-102.5%.This method has the features of simple,rapid,accurate and efficient.It is a high sensitive,safe and practical method,can meet the requirements of technical analysis. References | Related Articles | Metrics

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Determination of boric acid salt in cosmetics by ion exclusion chromatography LI Ming, LING Xiao-fang, ZHENG Hong-guo, GUO Hua 2015, 45 (4):  233-240.  doi: 10.13218/j.cnki.csdc.2015.04.013 Abstract ( 306 )   PDF (815KB) ( 368 )   The method of ion exclusion chromatography to detect boric acid and salt in cosmetics was established.After pretreatment of the samples,the boric acid and salt in samples was separated on ICS1100 ion chromatography system using IonPac ICE-borate ion exclusion column which has a good selectivity for borate radicals as analysis column,with methane sulfonic acid-mannitol as eluent,and suppressed conductivity detector to detect boric acid salts in cosmetics.Results showed that boric acid salt detection limit of this method is 0.57 mg/kg;the limit of quantification is 1.9 mg/kg;the recovery is in the range of 87%-108%,with good recovery and reproducibility. References | Related Articles | Metrics