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Chinese Journal of Chemical Engineering 2020年第1期28卷 63-75页

作者： Nadia Esfandiari Reza Zareinezhad Zahra Habibi Department of Chemical Engineering Marvdasht BranchIslamic Azad UniversityMarvdashtIran

The nanophotocatalysts were synthesized in four stages and evaluated by FTIR, FESEM and VSM analysis. The influence of nanofluids containing functionalized magnetic Ti O2 nanophotocatalyst and dipalmitoylphosphatidylcholine lecithin in drag reduction of turbulent flow in four horizontal pipelines was studied. The effective parameters on drag reduction(nanoparticle concentration, surfactant concentration, p H and Re number) were investigated and optimized in each pipeline using response surface method. The drag reduction in 1/2 " galvanized, 3/4" galvanized, 1/2 "five-layer and 1/2" cuprous pipelines was found 99.1%, 92.5%, 87.6% and 85.2%, respectively. The model adequacy was measured using ANOVA. Based on the high determination coefficient, more than 95% of variance of experimental data in all pipelines was described by quadratic model.

关键词： Drag reduction lecithin Functionalized magnetic nanophotocatalyst Turbulent flow Response surface

Visualization analysis of lecithin in drugs based on electrochemiluminescent single gold microbeads

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Journal of Pharmaceutical Analysis 2021年第4期11卷 515-522页

作者： Gen Liu Pei-Long Wang Hui Gao College of Chemistry and Material Science Huaibei Normal UniversityHuaibei235000AnhuiChina Henan Key Laboratory of Biomolecular Recognition and Sensing Shangqiu Normal UniversityShangqiu476000HenanChina State Key Laboratory of Analytical Chemistry for Life Science Nanjing UniversityNanjing210023China

Fast and high-throughput determination of drugs is a key trend in clinical *** particles have increasingly been adopted in a variety of photoanalytical and electroanalytical applications,and microscopic analysis has been a hot topic in recent years,especially for electrochemiluminescence(ECL).This paper describes a simple ECL method based on single gold microbeads to image *** reacts to produce hydrogen peroxide under the successive enzymatic reaction of phospholipase D and choline *** was generated by the electrochemical reaction between a luminol analog and hydrogen peroxide,and ECL signals were imaged by a *** the heterogeneity of single gold microbeads,their luminescence obeyed statistical *** average luminescence of 30 gold microbeads is correlated with the lecithin concentration,and thus,a visualization method for analyzing lecithin was *** curves were constructed for ECL intensity and lecithin concentration,achieving detection limits of 0.05 m M *** ECL imaging platform based on single gold microbeads exhibits outstanding advantages,such as high throughput,versatility and low cost,and holds great potential in disease diagnostics,environmental monitoring and food safety.

关键词： lecithin Single particle Visualization analysis Electrochemiluminescence

Dietary lecithin improves feed efficiency without impacting meat quality in immunocastrated male pigs and gilts fed a summer ration containing added fat

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Animal Nutrition 2018年第2期4卷 203-209页

作者： Henny Akit Cherie Collins Fahri Fahri Alex Hung Darryl D'Souza Brian Leury Frank Dunshea Faculty of Veterinary and Agricultural Sciences The University of Melbourne Department of Animal Science Faculty of Agriculture Universiti Putra Malaysia Rivalea Australia Pty Ltd. Australian Pork Ltd.

The aim of this study was to investigate the effects of sex and dietary lecithin on growth performance,meat quality, muscle collagen content and gene expression of key genes involved in collagen synthesis in finisher pigs.A total of 256 pigs(Large White × Landrace) were allotted to a 2 × 2 factorial arrangement involving sex(gilt or immunocastrated [IC] male) and dietary treatment(0 or 5 g/kg of dietary lecithin).All diets were formulated to contain 4.6% tallow with relatively high total fat of 6.3%.After 5 weeks of dietary treatment, pigs were slaughtered and Longissimus dorsi muscle was obtained for evaluation of meat quality and collagen *** abdominis muscle was analysed for gene expression of key genes involved in collagen synthesis namely, type Ⅰ(a1) procollagen(COL1A1), type Ⅲ(a1) procollagen(COL3A1), a-subunit of prolyl 4-hydroxylase(P4H), lysyl oxidase and metalloproteinase-1(MMP-1).The results showed that lecithin improved feed efficiency of all pigs(P 0.05).lecithin also had no effect on meat compression, shear force, collagen content and gene expression(P > 0.05).Immunocastrated male had higher growth rate and increased COL1 A1 expression than ***, sex had no effect on fat depth at the P2 site(65 mm from the midline over the last rib), collagen content and expression of other genes(P > 0.05).In conclusion, lecithin improved feed efficiency in finishing pigs without impacting pork ***, inclusion of lecithin in diets containing high amount of tallow during the summer period could be beneficial.

关键词： Fat Feed efficiency lecithin Meat quality Pigs

Soybean lecithin-based extender improves Damascus goat sperm cryopreservationand fertilizing potential following artificial insemination

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Asian pacific Journal of Reproduction 2019年第4期8卷 174-180页

作者： Mohamed Fathi Rawash Zaher Dohreig Ragab Inas Gamal Assi Mohamed Eman Abu-El Naga Magdy Badr Department of Theriogenology Faculty of Veterinary MedicineCairo UniversityGizaEgypt Artificial Insemination and Embryo Transfer Department Animal Reproduction Research InstituteGizaEgypt Immunity Department Animal Reproduction Research InstituteGizaEgypt Pathology Department Animal Reproduction Research InstituteGizaEgypt 5Department of TheriogenologyFaculty of Veterinary MedicineAswan UniversityAswanEgypt

Objective: To study the effect of adding different concentrations of soybean lecithin in Tris based extender and to compare the results of Tris soybean lecithin extender with two commercial diluents (egg yolk-based: BullXcell and plant-based: OptiXcell) for Damascus goat sperm cryopreservation. Methods: The ejaculates from 4 mature male Damascus goats were obtained by using an artificial vagina. Semen samples were pooled and diluted in Tris extender supplemented with soybean lecithin at different concentrations of 1.5%, 3.0%, 6.0% and 10.0% to get better concentration to be used for further experiments, with a final concentration of 240×106 spermatozoa/mL. Semen samples were packed in straws (0.25 mL), frozen by using an automated system and stored in liquid nitrogen at -196 ℃ for 48 h. After thawing (37 ℃/30 s), the samples were evaluated for sperm quality parameters, including sperm motility, membrane integrity and acrosome integrity. Malondialdehyde concentration was estimated as a marker for lipid peroxidation. Based on the previous investigations, only Tris extender supplemented with 3.0% soybean lecithin (based on its positive results) was used versus BullXcell and OptiXcell for sperm ultrastructure evaluation and artificial insemination by using electron microscope and artificial insemination of the synchronized does. Results: There was no significant difference between Tris-soybean lecithin at 3.0% and BullXcell/OptiXcell diluents in post-thaw sperm parameters and fertility following artificial insemination;meanwhile, the other concentrations of soybean lecithin (1.5%, 6.0% and 10%) showed lower sperm parameters following cryopreservation. Conclusions: Using of Tris-soybean lecithin based extender at the level of 3.0% can be an appropriate alternative to either BullXcell or OptiXcell for Damascus goat sperm cryopreservation.

关键词： Damascus goat Soy lecithin Sperm cryopreservation BullXcell OptiXcell

Impact of replacing egg yolk with lecithin on quality of pre-freeze and post-thaw buffalo spermatozoa

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Asian pacific Journal of Reproduction 2018年第6期7卷 254-260页

作者： Asmaa A.Mostafa Mohamed.S.El-Belely Sayed.T.Ismail Reda.I.El-Sheshtawy Mohamed I.Shahba Abassia Frozen Semen Center General Organization for Veterinary ServicesCairoEgypt Department of Theriogenology Faculty of Veterinary MedicineCairo UniversityGizaEgypt Animal Reproduction and Artificial Insemination Department National Research CentreDokkiGizaEgypt

Objective:To estimate the result of egg yolk replacement with alternative cryopreservatives such as plant-derived lecithin from soybean on sperm quality parameters pre and post freezing in buffalo ***: The control cryopreservation extender was tris-citric acid-fructose-egg yolk-glycerol (TCFYG) diluent. Semen samples were extended gradually 1:10 with TCFYG control extender and tris-citric acid-fructose-glycerol (TCFG) extender plus variable concentrations of soybean lecithin (0.5%, 1.0%, 1.5%, 2.0%, 2.5% and 3.0%) to ensure 60 million active spermatozoa/mL of the extended semen. The diluted semen samples were refrigerated slowly (roughly for 2 h) up to 5℃ and equilibrated for 2 h. Semen was filled into 0.25 mL polyvinyl French straws (IMV, France). After equilibration period, the straws were placed horizontally on a rack and frozen in a vapor 4 cm above liquid nitrogen for 10 min and were then dipped stored in liquid nitrogen at -196℃. Results:The respective overall percentages of forward motile spermatozoa, live spermatozoa, morphologically normal spermatozoa, acrosome integrity and hypo-osmotic swelling reactivity observed primarily in fresh semen, after equilibration (pre-freeze stage) and post freezing (post-thaw stage) in TCFYG (control) extended semen declined progressively and statically (Plecithin at concentrations of 1.0% and 1.5% significantly (Plecithin (SL) showed significantly (P<0.01) higher percentage of sperm progressive motility compared to 1.5% SL and TCFYG control. These values were significantly (P<0.01) higher t

关键词： Buffalo Semen Preservation Soybean lecithin

lecithin organogel: A unique micellar system for the delivery of bioactive agents in the treatment of skin aging

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Acta Pharmaceutica Sinica B 2012年第1期2卷 8-15页

作者： Sushil Raut Santosh Singh Bhadoriya Vaibhav Uplanchiwar Vijay Mishra Avinash Gahane Sunil Kumar Jain Department of Pharmacy Adina Institute of Pharmaceutical SciencesSagar 470002India Department of Pharmaceutical Sciences Dr.H.S.Gour UniversitySagar 470003India

Skin aging is an unavoidable aspect of human *** skin aging can result from poor care,environmental pollutants,and ultraviolet radiation ***,lines,spots,uneven skin tone,and pigmentation are often indicators of skin *** cannot avoid aging but cosmetics and pharmaceutical approaches can minimize and delay the *** applications of biocompatible and biodegradable vehicles have been explored for delivering anti-aging *** organogel(LO)is an effective vehicle for topical delivery of many bioactive agents used in aging *** is cell component isolated from soya beans or eggs and purified to show excellent gelation in non-polar solvents when combined with *** can form a heat-stable,resistant to microbial growth,visco-elastic,optically transparent,and non-birefringent micellar *** serves as an organic medium to enhance dermal permeation of poorly permeable drugs by effectively partitioning into the *** ability to dissolve in hydrophilic as well as in lipophilic drugs makes it a dynamic vehicle,which can be explored as a carrier for anti-aging agents.

关键词： Skin aging Topical lecithin Biocompatible Organogel

Effect of Soya lecithin on Solubilization and Biodegradation of Pentachlorophenol by <i>Anthracophyllum discolor</i>

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American Journal of Analytical Chemistry 2014年第1期5卷 28-38页

作者： Mariela Bustamante Olga Rubilar María Cristina Diez Chemical Engineering Department Universidad de La Frontera Temuco Chile Environmental Biotechnology Center Scientific and Technological Bioresource Nucleus (BIOREN) Temuco Chile

The effect of soya lecithin (SL) on solubilization and biodegradation of pentachlorophenol (PCP) by Anthracophyllum discolor was evaluated. Besides, the PCP effect on critical micelle concentration (CMC) of SL and the effect of PCP and SL on the ligninolytic activity of A. discolor were evaluated. The PCP solubilization test was performed for 100, 200 and 400 mg·L-1 with SL solution varying concentrations of ranging from 0 to 0.9 g·L-1. The effect of PCP (5 to 20 mg·L-1) on CMC of SL by conductivity was evaluated. The effect of SL (0 to 0.9 g·L-1) on biodegradation of PCP (21.4 mg·L-1) in modified Kirk medium was studied. The results showed that SL addition enhanced PCP solubility in water. The solubilities of 100, 200 and 400 mg·L-1 of PCP were about 4.2, 5.0 and 2.5 times higher than their solubility in pure water when the system was added with 0.9 g·L-1 of SL. We found that the increase in PCP concentration caused a decrease in the CMC value. In the biodegradation assay, in liquid medium supplemented with 0.9 g·L-1 of SL, the 94.4% of PCP was biodegraded after 26 days of incubation. In contrast, in the control assay (without SL), the 76.5% of PCP was removed. The PCP degradation was confirmed by the presence of its metabolites. During biodegradation assay, A. discolor mainly produced manganese peroxidase reaching a maximum of 96.8 U·g-1 (dw) when the culture medium was added with 0.6 g·L-1 of SL. These results show that SL can be applied to increasing the bioavailability and biodegradation of PCP.

关键词： Soya lecithin Solubility Biodegradation White-Rot Fungi Pentachlorophenol

Effect of lecithin on Safety of Composition B

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Effect of Lecithin on Safety of Composition B

Efficacy of Soya lecithin Powder Combined with Conventional Therapy on Chronic Hepatitis B

2004安全科学与技术国际会议

作者： ZENG Qingguo1, WANG Liqiong1, WANG Xiaoning1, TIAN Jingai1, ZHANG Ming2 & HUANG Yong2 (1 State Key Laboratory of Prevention and Control of Explosion Disasters, Beijing Institute of Technology, Beijing 100081, China) (2 Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China)

By means of experiments of emulsification, stability and observations of microscope photographs, it shows that mixture of NC and lecithin can emulsify wax very well in composition B. Two kinds of leci

关键词： dispersion and emulsification microstructure lecithin safety

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Medicinal Plant 2019年第6期10卷 97-99页

作者： Weibin MO Wan’ai OUYANG Department of Liver Diseases the Eighth People’s Hospital of GuangzhouGuangzhou 510400China

[Objectives]To probe into the treatment effects of soya lecithin powder combined with conventional therapy on chronic hepatitis B.[Methods]A total of 120 patients with chronic hepatitis B admitted to the Eighth People’s Hospital of Guangzhou from February 2017 to February 2018 were randomly divided into observation group and control group in the way of drawing lots,with 60 cases in each *** groups of patients were treated with conventional *** this basis,the control group was given Liver Protection Tablet,and the observation group was given soya lecithin powder for 2 *** relief of symptoms of both groups and the recovery of liver functions were observed,including alanine aminotransferase(ALT),aspartate aminotransferase(AST),serum total bilirubin(TBIL),and glutamyl transpeptidase(GGT),as well as recovery of B-scan ultrasonography image and adverse drug reactions were observed.[Results]After treatment,the relief rate of fatigue,anorexia,abdominal distension and the disappearance rate of hepatic discomfort in the observation group were significant higher than those in the control group,and the difference was statistically significant(Plecithin powder combined with conventional therapy on chronic hepatitis B can significantly improve the liver function and relieve the symptoms.

关键词： Chronic hepatitis B Soya lecithin powder Therapy

Effect of novel stabilizers—lecithin on the particle size and physical stability of poorly soluble drug Toad venom

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Effect of novel stabilizers—lecithin on the particle size a...