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Effects of Ayurvedic Rasayana botanicals on CYP3A4 isoenzyme system

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Journal of Integrative Medicine 2015年第3期13卷 165-172页

作者： Swapnil P.borse Bhagyashree B.Kamble Symbiosis School of Biomedical Sciences Symbiosis International University Department of Pharmacognosy JSS College of Pharmacy

OBJECTIVE： Consuming botanical dietary supplements or herbal drugs along with prescription drugs may lead to potential pharmacokinetic-pharmacodynamic（PK-PD） herb-drug interactions（HDI）. The present study focuses on the importance of and novel approach for assessing HDI in integrative medicine with case examples of two frequently-used Ayurvedic Rasayana ***： The aqueous extracts of Asparagus racemosus（ARE） and Gymnema sylvester（GSE） were prepared as per Ayurvedic Pharmacopoeia of India. Chemoprofiling of these extracts was done using high-performance liquid chromatography（HPLC）. Additionally, ARE was characterized for the presence of shatavarins IV and I using HPLC ＆ mass spectroscopy respectively. Effects of ARE and GSE were investigated on rat liver microsome using testosterone probe drug assay. The changes in formation of metabolite（6-β hydroxy testosterone） were monitored on incubation of testosterone alone, testosterone with ketoconazole, ARE and GSE using HPLC. Half inhibitory concentration（IC50） was used to predict plausible ***： ARE and GSE showed no inhibition with IC50 values 〉1 000 μg/m L while the standard inhibitor ketoconazole completely abolished CYP3A4-dependent activity at 0.531 μg/m L and IC50 was found to be 0.036 μg/m ***： ARE and GSE prepared as per Ayurvedic Pharmacopoeia of India were found to be safe for CYP3A4-mediated inhibitory HDI in rats. Our in vitro study suggests the need of further in vivo investigation for HDI in order to provide clinical relevance.

关键词： drugs,Chinese herbal Ayurveda Asparagus racemosus Gymnema sylvester plant extracts cytochrome P-450 CYP3A herb-drug interactions

Influence of precursor solution concentration on the structural, optical and humidity sensing properties of spray-deposited TiO_2 thin films

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Journal of Semiconductors 2018年第12期39卷 13-18页

作者： Dipak L Gapale Sandeep A Arote Balasaheb M Palve Ratan Y borse S.N. Arts D.J.M. Commerce and B.N.S. Science College Sangamner Thin and Thick Film Laboratory Dept.of Electronics M.S.G. College Malegaon Camp (Pin 423105)

In the present paper,the influence of precursor concentration on the structural,optical,and humidity sensing properties of spray-deposited titanium dioxide(TiO) films are investigated. The TiOthin films were successfully deposited by spraying different precursor concentrations such as 0.075 M, 0.1 M, and 0.125 M of titanium trichloride solution onto glass substrates. X-ray diffractometry(XRD) studies confirmed the polycrystalline anatase phase of TiOwith dominant(101) plane. The crystallite size was found to increase with the increase in precursor concentration. The micro-strain and dislocation density in the film was observed to decrease as the crystallite size increased. The UV-vis spectra confirmed the optical absorbance edge of the samples shifted toward lower wavelengths with increased precursor concentration. The humidity sensing properties of the synthesized material were measured by monitoring the change in resistance of the sample with the change in relative *** material synthesized with 0.1 M precursor concentration, by using the spray pyrolysis method,shows good sensitivity and has a response time of 77.5 s and fast recovery time of 3 s.

关键词： titanium dioxide spray pyrolysis structural electrical gas sensing

Humidity sensing properties of spray deposited Fe doped TiO_(2)thin film

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Journal of Semiconductors 2021年第12期42卷 62-71页

作者： Dipak L Gapale Pranav P.Bardapurkar Sandeep A.Arote Sanjaykumar Dalvi Prashant Baviskar Ratan Y borse S.N.Arts D.J.M.Commerce and B.N.S.Science College SangamnerDistrict Ahmednagar 422605 MSIndia Thin and Thick film Laboratory Department of ElectronicsM.S.G.CollegeMalegaon Camp(Pin 423105)District NashikMaharashtraIndia

In the present work,ferrite(Fe)doped TiO_(2)thin films with different volume percentage(vol%)were synthesized using a spray pyrolysis *** effect of Fe doping on structural properties such as crystallite size,texture coefficient,microstrain,dislocation densities *** evaluated from the X ray diffratometry(XRD)*** data revealed a polycrystalline anatase TiO_(2)phase for sample synthesized up to 2 vol%and mixed anatase and rutile crystalline phase for sample synthesized at 4 vol%Fe doped TiO_(2).The crystalline size was observed to decrease with increase in Fe dopant vol%and also other structural parameters changes with Fe dopant *** the present work,electrical resistance was observed to decrease with a rise in Fe dopant vol%and temperature of the *** properties like temperature coefficient of resistance and activation energy also showed strong correlation with Fe dopant vol%.Humidity sensing properties of the synthesized sample altered with a change in Fe dopant vol%.In the present paper,maximum sensitivity of about 88.7%for the sample synthesized with 2 vol%Fe doped TiO_(2)and also the lowest response and recovery time of about 52 and 3 s were reported for the same sample.

关键词： Fe doped TiO_(2) thin films spray pyrolysis humidity sensing

Spontaneously producing syngas from MFC-MEC coupling system based on biocompatible bifunctional metal-free electrocatalyst

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Science China Materials 2021年第3期64卷 592-600页

作者： Wei Wang Rahul Anil borse Jiafang Xie Yaobing Wang Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of NanomaterialsState Key Laboratory of Structural ChemistryKey Laboratory of Optoelectronic Materials Chemistry and PhysicsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou350002China University of Chinese Academy of Sciences Beijing100049China Dalian National Laboratory for Clean Energy Dalian116023China

The preparation of high-value fuels and chemicals through the electrochemical carbon dioxide reduction reaction(CDRR)is of great significance to the virtuous cycle of carbon ***,due to the high overpotential involved in this reaction,high power consumption and high-cost noble-metal-based catalysts are required for driving this ***,the electrochemical CDRR was achieved on biocompatible metal-free nitrogen,phosphorus co-doped carbon-based materials(NP-C)in the microbial fuel cell-microbial electrolysis cell(MFC-MEC)coupling *** the bioelectrochemistry in MFC supplied power to drive the electrocatalysis in MEC,syngas was spontaneously produced from this coupling system without external energy *** the NP-C materials as the excellent bifunctional electrocatalyst for the CDRR and oxygen reduction reaction(ORR),the current density of the MEC reached−0.52 mA cm^−2,and the Faradaic efficiencies(FEs)of CO and H2 were 60%and 40%,respectively,at a load resistance of 10Ω.Moreover,the CO/H2 product ratio can be changed by adjusting the load resistance,which will widely meet various demand of syngas usage in further *** study provides a spontaneous and tunable production of syngas in biogas digesters via a electrochemical strategy.

关键词： spontaneous production syngas MFC-MEC coupling system N/P-co-doped carbon electrocatalyst

Photocatalytic reduction of organic pollutant under visible light by green route synthesized gold nanoparticles

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Journal of Environmental Sciences 2017年第5期29卷 236-246页

作者： Bharat C.Choudhary Debajyoti Paul Tarun Gupta Sandesh R.Tetgure Vaman J.Garole Amulrao U.borse Dipak J.Garole School of Chemical Sciences North Maharashtra University Jalgaon 425001 Maharashtra India Centre for Environmental Science & Engineering Indian Institute of Technology Kanpur Kanpur 208016 Uttar Pradesh India Department of Earth Sciences Indian Institute of Technology Kanpur Kanpur 208016 Uttar Pradesh India Enoironmental Enoineering and Manaoement Department of Civil Engineering Indian Institute of Technology Kanpur Kanpur 208016 Uttar Pradesh India Directorate of Geology and Mining Government of Maharashtra Nagpur 440010 Maharashtra India

We report a rapid method of green chemistry approach for synthesis of gold nanoparticles（AuNPs）using Lagerstroemia speciosa leaf extract（LSE）. L. speciosa plant extract is known for its effective treatment of diabetes and kidney related problems. The green synthesis of Au NPs was complete within 30 min at 25°C. The same could also be achieved within 2 min at a higher reaction temperature（80°C）. Both UV–visible spectroscopy and transmission electron microscopy results suggest that the morphology and size distribution of Au NPs are dependent on the pH of gold solution,gold concentration,volume of LSE,and reaction time and temperature. Comparison between Fourier transform infrared spectroscopy（FT-IR）spectra of LSE and the synthesized Au NPs indicate an active role of polyphenolic functional groups（from gallotannins,lagerstroemin,and corosolic acid）in the green synthesis and capping of Au NPs. The green route synthesized Au NPs show strong photocatalytic activity in the reduction of dyes viz.,methylene blue,methyl orange,bromophenol blue and bromocresol green,and 4-nitrophenol under visible light in the presence of Na BH4. The non-toxic and cost effective LSE mediated Au NPs synthesis proposed in this study is extremely rapid compared to the other reported methods that require hours to days for complete synthesis of Au NPs using various plant extracts. Strong and stable photocatalytic behavior makes Au NPs attractive in environmental applications,particularly in the reduction of organic pollutants in wastewater.

关键词： Green synthesis Gold nanoparticles Lagerstroemia speciosa Photocatalyst Dyes Nitroaromatic compound

Electrochemical Performance of Starch-Polyaniline Nanocomposites Synthesized By Sonochemical Process Intensification

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Journal of Renewable Materials 2019年第12期7卷 1279-1293页

作者： Narsimha Pandi Shirish H.Sonawane Sarang P.Gumfekar Anand Kishore Kola Pramod H.borse Swapnil B.Ambade Sripadh Guptha Muthupandian Ashokkumar Department of Chemical Engineering National Institute of TechnologyWarangalTelanganaIndia Department of Chemical and Materials Engineering University of AlbertaEdmontonCanada International Advanced Research Centre for Powder Metallurgy and New Materials Balapur POHyderabadTelanganaIndia Department of Organic and Nano Engineering Hanyang University 222Wangsimni-roSeongdong-guSeoulKorea Department of Chemistry University of MelbourneVictoriaAustralia.

The present study deals with the intensified synthesis of starch-polyaniline(starch-PANI)nanocomposite using an ultrasound-assisted *** is a key component in this nanocomposite,which acts as a backbone of the nucleation of *** Electrochemical property of the nanocomposite arises due to the addition of *** is one of green approach for the synthesis of bio nanocomposite using *** crystallinity of the composite is evaluated using the Scherrer *** starch-PANI nanocomposite was characterized by XRD,FT-IR,Raman,XPS and *** composite nanoparticles show spherical *** elemental composition of starch-PANI showed O 1s peak at 546 eV,N 1s peak at 416 eV,C 1s peak at 286 eV and S 1s peak at 176 *** electrochemical studies of the starch-PANI electrodes are evaluated by cyclic voltammetry(CV),galvanostatic charge/discharge(GCD),and electrochemical impedance spectroscopy(EIS).Starch-PANI electrode has shown the maximum specific capacitance of 499.5 F/g at 5 mV/s scan rate.

关键词： Starch polyaniline sonochemical synthesis ultrasound biocomposite electrochemical analysis supercapacitor

Glycerol mediated synthesis of 5-substituted lH-tetrazole under catalyst free conditions

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Chinese Chemical Letters 2012年第2期23卷 161-164页

作者： Kamalakar P.Nandre Jagdish K.Salunke Jitendra P.Nandre Vijay S.Patil Amul U.borse Sidhanath V.Bhosale Department of Organic Chemistry North Maharashtra UniversityJalgaon 425001India School of Chemical Sciences North Maharashtra UniversityJalgaon 425001India

We have developed simple,cost effective and environmentally benign protocol for the synthesis of 5-substituted 1H-tetrazoles via[2,3]cycloaddition reaction from organic nitriles and sodium azide in glycerol under cata... 详细信息

关键词： 5-Substituted 1H-tetrazole [3+2]Cycloaddition Nitriles Glycerol Catalyst free

Synergistic Antioxidant Action of Oregano, Ajowan and Borage Extracts

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Food and Nutrition Sciences 2011年第5期2卷 387-392页

作者： Hafeeza Khanum Kulathooran Ramalakshmi Pullabhatla Srinivas Babasaheb Bhaskarrao borse 不详

Radical scavenging activity (RSA), antioxidant activity (AA), reducing power, total polyphenol (TP) and flavonoid contents (TFC) of oregano (Oreganum vulgare spp), ajowan (Trachyspermum ammi) and Indian borage (Plectranthus amboinicus) extracts were evaluated. Oregano exhibited maximum radical scavenging activity (88.2%, 82.3%) for aqueous and ethanolic extracts at 50 ppm concentration respectively, followed by ajowan (86.9%, 68.4%) and Indian borage (30.5%, 30.4%). Extracts of oregano and ajowan showed better antioxidant activity and reducing power than that of Indian borage. Aqueous extracts of oregano had highest TP (Gallic acid equivalents) and TFC (Catechin equivalents) of 27.7% and 50.6 % respectively compared to ajowan (6.7%, 24.4%) and Indian borage (4.2%, 5.5%). Synergistic studies showed that the addition of oregano extract appreciably enhanced the RSA of ajowan and Indian borage extracts even at 50 ppm concentration.

关键词： Oreganum Vulgare Trachyspermum Ammi Pleactranthus Amboinicus Antioxidant Activity Synergistic Action

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二阶导数光谱法测定蛋白质的含量

广西科学院学报 1989年第2期5卷 40-44页

作者：覃志坚右江民族医学院中心实验室

导数光谱是紫外可见分光光度法中用以排除干扰的一种技术。本文用日立220—A紫外可见分光光度计中测定了血清蛋白质的含量。通过实验得出的线性回归方程为D=155.24c—0.346;相关系数r=0.9998,样本平均回收率为100.05％,精度试验d=0.077,... 详细信息

导数光谱是紫外可见分光光度法中用以排除干扰的一种技术。本文用日立220—A紫外可见分光光度计中测定了血清蛋白质的含量。通过实验得出的线性回归方程为D=155.24c—0.346;相关系数r=0.9998,样本平均回收率为100.05％,精度试验d=0.077,S=0.418,dx=0.027,Sx=0.148。此法重现好,变异系数(CV)<±1％,此法简单,快速,可用于血清蛋白质的测定。

关键词：导数光谱法血清蛋白测定