The Malaysian Journal of Analytical Sciences最新文献_第9页

Pengekstrakan sebatian fenolik daripada kulit nenas dengan bantuan gelombang mikro: Pengoptimuman keadaan pengendalian dan perbandingan dengan pengekstrakan soxhlet

The Malaysian Journal of Analytical Sciences Pub Date : 2017-01-01 DOI: 10.17576/MJAS-2017-2103-18

N. Alias, Abbas Zulkifly

引用次数: 4

Microwave-assisted synthesis of mesoporous silica nanoparticles as a drug delivery vehicle 微波辅助合成介孔二氧化硅纳米颗粒作为药物递送载体

The Malaysian Journal of Analytical Sciences Pub Date : 2016-12-08 DOI: 10.17576/MJAS-2016-2006-17

N. Kamarudin, A. A. Jalil, S. Triwahyono, S. N. Timmiati

{"title":"Microwave-assisted synthesis of mesoporous silica nanoparticles as a drug delivery vehicle","authors":"N. Kamarudin, A. A. Jalil, S. Triwahyono, S. N. Timmiati","doi":"10.17576/MJAS-2016-2006-17","DOIUrl":"https://doi.org/10.17576/MJAS-2016-2006-17","url":null,"abstract":"Nanotechnology has been utilized in medicine for therapeutic drug delivery and the development of treatments for a variety of diseases and disorders. Mesoporous silica nanoparticles (MSN), which combine both unique properties of nanomaterials and mesostructured substances, have aroused special attention in biomedical research field due to its great advantages in many aspects such as well biocompatible, unique properties of tunable pore size and structure, large surface areas and pore volumes, controllable morphology and modifiable surfaces, high chemical and thermal stabilities. In this study, the microwave was utilized to synthesize MSN under 100 W, 300 W and 450 W heating powers. All MSNs was tested for adsorption and release of an anti-inflammatory and anti-cancer drug, ibuprofen. The characterization revealed that the MSN prepared under 450 W (MSN450) produced the most ordered and prominent mesoporous structure compared to lower power applied. MSN450 exhibited the highest ibuprofen adsorption, followed by MSN300 and MSN100, confirming that more ordered MSN demonstrated higher adsorptivity toward ibuprofen. For the release study, MSN450 showed the slowest release rate of ibuprofen, followed by MSN300 and MSN100. All MSNs was found to exhibit good activity for the ibuprofen adsorption and release.","PeriodicalId":22844,"journal":{"name":"The Malaysian Journal of Analytical Sciences","volume":"189 1","pages":"1382-1389"},"PeriodicalIF":0.0,"publicationDate":"2016-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76658310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Nitrogen use efficiency in MR219-4 and MR219-9 rice mutant lines under different water potentials and nitrogen levels using 15N isotopic tracer technique. 不同水势和氮素水平下水稻突变系MR219-4和MR219-9的氮素利用效率

The Malaysian Journal of Analytical Sciences Pub Date : 2016-06-15 DOI: 10.17576/MJAS-2016-2003-06

A. Wahid, A. Samsudin, K. A. Rahim, A. R. Harun

{"title":"Nitrogen use efficiency in MR219-4 and MR219-9 rice mutant lines under different water potentials and nitrogen levels using 15N isotopic tracer technique.","authors":"A. Wahid, A. Samsudin, K. A. Rahim, A. R. Harun","doi":"10.17576/MJAS-2016-2003-06","DOIUrl":"https://doi.org/10.17576/MJAS-2016-2003-06","url":null,"abstract":"This study was conducted to evaluate the nitrogen use efficiency of rice mutant lines of MR219, viz. MR219-4 and MR219-9, developed under rice radiation mutagenesis programme for adaptability to aerobic conditions, grown under conditions of varying water potentials and nitrogen levels in a shade house. Direct 15 N isotopic tracer method was used in this study, whereby the 15 N labeled urea fertilizer was utilized as a tracer for nitrogen nutrient uptake by the test crops. 15 N isotope presence in the samples was determined by using emission spectrometer analysis and percentage of total nitrogen was determined by using Kjeldahl method. 15 N atom access values of the samples were to determine the efficiency of N use by the mutant varieties. In this work, the data of yield components, viz. grain yield, plant biomass, plant height and 1000 grain weight, and nitrogen components viz, total N, % nitrogen derived from labeled fertilizer (% Ndff), % nitrogen derived from soil (% Ndfs), nitrogen uptake, fertilizer nitrogen use and nitrogen use efficiency were obtained. Results from this study showed a significant difference to the nitrogen component and yield when there is a change in the rate of fertilizer and water potential. However, varietal factor does not show any significant differences.","PeriodicalId":22844,"journal":{"name":"The Malaysian Journal of Analytical Sciences","volume":"16 1","pages":"500-509"},"PeriodicalIF":0.0,"publicationDate":"2016-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90601598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Effect of edible lipid-chitosan film forming dispersion on postharvest life of guava stored at chilled temperature. 食用脂质-壳聚糖成膜分散液对番石榴冷藏后采后寿命的影响。

The Malaysian Journal of Analytical Sciences Pub Date : 2016-01-01 DOI: 10.17576/MJAS-2016-2003-22

Nurul Adilla M Loai, H. Som, Z. A. Haiyee

引用次数: 4

Adsorption of anionic dyes from aqueous solutions by calcined and uncalcined Mg/Al layered double hydroxide. 煅烧和未煅烧Mg/Al层状双氢氧化物对阴离子染料的吸附。

The Malaysian Journal of Analytical Sciences Pub Date : 2016-01-01 DOI: 10.17576/MJAS-2016-2004-10

S. Sumari, Z. Hamzah, N. Kantasamy

{"title":"Adsorption of anionic dyes from aqueous solutions by calcined and uncalcined Mg/Al layered double hydroxide.","authors":"S. Sumari, Z. Hamzah, N. Kantasamy","doi":"10.17576/MJAS-2016-2004-10","DOIUrl":"https://doi.org/10.17576/MJAS-2016-2004-10","url":null,"abstract":"The uptake of Acid Blue 29 (AB29), Reactive Orange 16 (RO16) and Reactive Red 120 (RR120) from aqueous solutions by calcined (CLDH) and uncalcined Mg/Al layered double hydroxide (LDH) has been investigated. The adsorption process was conducted in a batch mode at 25 °C. Anionic dye removal was more efficient using the CLDH rather than LDH. The adsorption process by CLDH involved reconstruction and hydration of the calcined LDH and intercalation of AB29, RO16 and RR120. Physical characterization using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared (FTIR) were used to ascertain the 'memory effect' phenomenon that is structural reconstruction to regain its original LDH after rehydration. To gain insight into the mechanism of adsorption by CLDH, the pseudo-first order (PFO) and pseudo-second order (PSO) and intraparticle diffusion (IPD) kinetic models were used to analyse experimental data. Based on the correlation coefficient (R), the PSO has better fitting (R = 0.987 – 1.00) compared to PFO (R = 0.867 –0.990). Furthermore the values of maximum adsorption capacity, (qe) calculated from PSO model are consistent with the experimental qe indicating that the experimental kinetic data for AB29, RO16 and RR120 adsorption by CLDH are suitable for this model. Recycling of the adsorbent, in cycles of calcination-reconstruction process promised a possibility of regeneration of CLDH.","PeriodicalId":22844,"journal":{"name":"The Malaysian Journal of Analytical Sciences","volume":"30 13 1","pages":"777-792"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82995683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Komposisi nutrisi dan analisis warna serbuk kuning telur rendah-kolesterol 营养成分和低胆固醇蛋黄粉分析

The Malaysian Journal of Analytical Sciences Pub Date : 2016-01-01 DOI: 10.17576/MJAS-2016-2004-15

Fauziah Che In, Z. A. Haiyee, O. Hassan, W. Mustapha

引用次数: 0

Kesan bahan penyokong terhadap aktiviti pemangkin nano ruthenium dalam hidrogenolisis gliserol

The Malaysian Journal of Analytical Sciences Pub Date : 2016-01-01 DOI: 10.17576/MJAS-2016-2002-24

Noraini Hamzah, Mohd Ambar Yarmo

引用次数: 1

Sintesis dan pencirian terbitan biskumarin dan benzopirano dikumarin

The Malaysian Journal of Analytical Sciences Pub Date : 2016-01-01 DOI: 10.17576/MJAS-2016-2004-22

Nik Khairunissa Nik Abdullah Zawawi, Muhammad Taha, Norizan Abdul Hamid, Norsiah Ismail

引用次数: 0