Maha Sarakham, Thailand

Mahasarakham University
Maha Sarakham, Thailand

Mahasarakham University is a Thai public university with approximately 45,000 higher education students in 2013.The university has two campuses, the Old Campus located in the city center in Maha Sarakham Province in the Northeast region of Thailand, and the New Campus located at Khamriang Subdistrict in the north-west of the city.The university is the only Thai university that offers postgraduate programs in Paleontology and Bachelor of Arts in the Khmer Language. MSU is the first university in Northeastern Thailand to offer a Bachelor of Arts program in Accounting and the second to commence Ph.D. course in the same subject. Moreover, the Faculty of Education, the flagship of MSU voted as Thailand’s Best Education Faculty in 2010 by the National Education Office.The university is the first Thai higher-education institution rated under the QS Stars System for Excellence in Higher Education and has become one of the top twenty universities in Thailand based on the Webometrics Ranking of World University. Wikipedia.

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Cushnie T.P.T.,Mahasarakham University | Lamb A.J.,Robert Gordon University
International Journal of Antimicrobial Agents | Year: 2011

Antibiotic resistance is a major global problem and there is a pressing need to develop new therapeutic agents. Flavonoids are a family of plant-derived compounds with potentially exploitable activities, including direct antibacterial activity, synergism with antibiotics, and suppression of bacterial virulence. In this review, recent advances towards understanding these properties are described. Information is presented on the ten most potently antibacterial flavonoids as well as the five most synergistic flavonoid-antibiotic combinations tested in the last 6 years (identified from PubMed and ScienceDirect). Top of these respective lists are panduratin A, with minimum inhibitory concentrations (MICs) of 0.06-2.0 μg/mL against Staphylococcus aureus, and epicatechin gallate, which reduces oxacillin MICs as much as 512-fold. Research seeking to improve such activity and understand structure-activity relationships is discussed. Proposed mechanisms of action are also discussed. In addition to direct and synergistic activities, flavonoids inhibit a number of bacterial virulence factors, including quorum-sensing signal receptors, enzymes and toxins. Evidence of these molecular effects at the cellular level include in vitro inhibition of biofilm formation, inhibition of bacterial attachment to host ligands, and neutralisation of toxicity towards cultured human cells. In vivo evidence of disruption of bacterial pathogenesis includes demonstrated efficacy against Helicobacter pylori infection and S. aureus α-toxin intoxication. © 2011 Elsevier B.V. and the International Society of Chemotherapy. All rights reserved.

Kubola J.,Mahasarakham University | Siriamornpun S.,Mahasarakham University
Food Chemistry | Year: 2011

Three fractions (peel, pulp and aril) of gac fruit (Momordica cochinchinensis Spreng) were investigated for their phytochemicals (lycopene, beta-carotene, lutein and phenolic compounds) and their antioxidant activity. The results showed that the aril had the highest contents for both lycopene and beta-carotene, whilst peel (yellow) contained the highest amount of lutein. Two major phenolic acid groups: hydroxybenzoic acids and hydroxycinnamic were identified and quantified. Gallic acid and p-hydroxybenzoic acid were found in all fractions. Ferulic acid and p-hydroxybenzoic acid were most evident in pulp. Myricetin was the only flavonoid found in all fractions. Apigenin was the most predominant flavonoid in pulp (red), whereas rutin and luteolin gave the highest content in aril. The extracts of different fractions exhibited different levels of antioxidant activity in the systems tested. The aril extract showed the highest FRAP value. The greatest antioxidant activities of peel and pulp extracts were at immature stage, whereas those in the seed extracts increased from mature stage to ripe stage. The contents of total phenolic and total flavonoid in peel and pulp decreased during the fruit development stage (immature > ripe fruit) and subsequently displayed lower antioxidant capacity, except for the seed. © 2011 Elsevier Ltd. All rights reserved.

Pramual P.,Mahasarakham University | Adler P.H.,Clemson University
Molecular Ecology Resources | Year: 2014

The ecological and medical importance of black flies drives the need for rapid and reliable identification of these minute, structurally uniform insects. We assessed the efficiency of DNA barcoding for species identification of tropical black flies. A total of 351 cytochrome c oxidase subunit 1 sequences were obtained from 41 species in six subgenera of the genus Simulium in Thailand. Despite high intraspecific genetic divergence (mean = 2.00%, maximum = 9.27%), DNA barcodes provided 96% correct identification. Barcodes also differentiated cytoforms of selected species complexes, albeit with varying levels of success. Perfect differentiation was achieved for two cytoforms of Simulium feuerborni, and 91% correct identification was obtained for the Simulium angulistylum complex. Low success (33%), however, was obtained for the Simulium siamense complex. The differential efficiency of DNA barcodes to discriminate cytoforms was attributed to different levels of genetic structure and demographic histories of the taxa. DNA barcode trees were largely congruent with phylogenies based on previous molecular, chromosomal and morphological analyses, but revealed inconsistencies that will require further evaluation. © 2013 John Wiley & Sons Ltd.

Pattiya A.,Mahasarakham University
Bioresource Technology | Year: 2011

Biomass residues from cassava plants, namely cassava stalk and cassava rhizome, were pyrolysed in a fluidised-bed reactor for production of bio-oil. The aims of this work were to investigate the yields and properties of pyrolysis products produced from both feedstocks as well as to identify the optimum pyrolysis temperature for obtaining the highest organic bio-oil yields. Results showed that the maximum yields of the liquid bio-oils derived from the stalk and rhizome were 62 wt.% and 65 wt.% on dry basis, respectively. The pyrolysis temperatures that gave highest bio-oil yields for both feedstocks were in the range of 475-510 °C. According to the analysis of the bio-oils properties, the bio-oil derived from cassava rhizome showed better quality than that derived from cassava stalk as the former had lower oxygen content, higher heating value and better storage stability. © 2010 Elsevier Ltd.

Chookhampaeng S.,Mahasarakham University
European Journal of Scientific Research | Year: 2011

The title of this research is "The effects of NaCl on the growth and physiology of pepper." (Capsicum annuum L.) The cultivar Cho Jinda were studied. The plant was hydroponically grown in half-strength Hoagland solution for 20 days followed by treatments with 0, 50, 100 and 200 mM NaCl for 18 days. Growth parameters of 45-dayold plants were recorded. The plants were harvested and analyzed for the amount of chlorophyll, proline, catalase (CAT) and peroxidase (POD). The low (50 mM NaCl) level of salinity treatment had no deleterious effects on vegetative growth parameters, at higher concentration of NaCl (100 and 200 mM), growth parameters were drastically reduced. Salinity treatments caused a reduction in chlorophyll content, accumulation of proline and enhancement of CAT activity in shoot and root. © EuroJournals Publishing, Inc. 2011..

Thiengkamol N.,Mahasarakham University
European Journal of Social Sciences | Year: 2012

During few decades, social and economic development policy in Thailand, has been geared not only to the nation's income and social welfare, but food security has been recognized. Even though, Thailand is a world kitchen at the international level, but food accessibility of rural household level is still a problem, especially in the remote agricultural area. The recent increased in food price and production cost has impacted on undergraduate students of Mahasarakham University who came from agricultural family in rural area. They are facing risk of food insecurity because of declining purchasing power. The research objective was to develop the food security management for undergraduate student, Mahasarakham University. The mixed method research was employed to collect data. Qualitative research with focus group discussion integrated to Participatory-Appreciation-Influence-Control (PAIC). The sample group was selected by purposive sampling method. 30 participants of undergraduate students were used as sample and they were selected according to the criteria setting. Results showed that after training, mean scores of participants in terms of knowledge and understanding, attitude and behavior of food consumption, and training achievement were higher than before training with statistically significant (p<.001, p<.001,.001 and p<.001). Three Dimension Evaluations were congruent among, Self-evaluation, Friend-evaluation, and Facilitator-evaluation (p>.05). © EuroJournals Publishing, Inc. 2012.

Moongngarm A.,Mahasarakham University | Saetung N.,Mahasarakham University
Food Chemistry | Year: 2010

The aim of the study was to compare changes in the chemical compositions and bioactive compounds of germinated rough rice and germinated brown rice. Ungerminated rice (brown rice) and germinated rice extract powder were also prepared, for comparison purposes. In general, the concentration of crude protein, total free amino acids, α-tocopherol, γ-oryzanol, thiamine, niacin and pyridoxine, in the germinated rough rice and the germinated rice extracted powder, were significantly higher, than those of the germinated brown rice and the ungerminated rice, whilst there was no significant difference in the levels of crude fat, carbohydrate and ash. The amino acid contents of the germinated rice products were also investigated and differences were found amongst these samples. The most significant changes, in γ-aminobutyric acid, glycine, lysine and leucine, were observed in the germinated rough rice and the germinated rice extracted powder. © 2010 Elsevier Ltd. All rights reserved.

The multi-objective genetic algorithm is applied to determine the optimal operation of a multi-reservoir system in the Chi River Basin, Thailand. Two competing objective functions are considered; dam release and dam storage. The predicted values for the release and storage needed are mostly lower than in current established management practice. © 2013 Springer Science+Business Media Dordrecht.

Butsat S.,Mahasarakham University | Siriamornpun S.,Mahasarakham University
Food Chemistry | Year: 2010

Four fractions, namely, rice bran, rice husk, brown rice and milled rice of a Thai rice variety (Khao Dawk Mali 105), collected from three different growth sites, were analysed to determine phenolic acid composition, γ-oryzanol and tocopherols content and their antioxidant capacity using the 2,2-diphenyl-1-picrylhydrazyl (DPPH{radical dot}) radical scavenging and ferric reducing ability power (FRAP) assays. The bran and husk fractions showed higher values of antioxidant activity based on the DPPH{radical dot} and FRAP assays, compared to the other fractions. In addition, the bran fraction had the highest γ-oryzanol and tocopherols content. On the other hand, the husk fraction showed a greater phenolic acids concentration than the other fractions. The three major phenolic acids found in all fractions, despite different growth sites, were ferulic, vanillic and p-coumaric acids. Ferulic acid was most evident in the bran, whereas vanillic and p-coumaric acids were mostly found in the husk. Significant differences (p < 0.05) in the antioxidant capacities of each fraction depended on the growth sites and antioxidant components. We propose that variation in phenolic acid content could be affected by the growth sites. This study demonstrates that rice bran and husk can be considered as valuable sources of bioactive components with high antioxidant properties. © 2009 Elsevier Ltd. All rights reserved.

Bridhikitti A.,Mahasarakham University
International Journal of Climatology | Year: 2013

El Niño/La Niña Southern Oscillation (ENSO), Indian Ocean Dipole (IOD) and aerosols have important roles to play in relation to Southeast Asian rainfall anomalies. This study investigates connections between these factors and local seasonal rainfall anomalies at 17 locations throughout Thailand using ground measurements and satellite observations available from 1980 to October 2011. This research investigates further the usefulness of incorporating these factors into rainfall forecasts. Results from canonical correlation analysis indicate that strong ENSO signals from October to March may affect rainfall anomalies in the nonsummer monsoon months, whereas IOD signals in the previous summer monsoon months were deemed to be of greater responsibility for current summer monsoon rainfall. Comparison of rainfall levels with different aerosol loadings suggests rainfall-decreasing aerosol from December to February for the South East Coast and in pre-summer monsoon months for deeper inland areas having less coastal influences. Rainfall-increasing aerosol was observed in post-summer monsoon months at the inland stations. The use of ENSO/IOD signals as predictors yielded better rainfall forecast model performance than that of the aerosol loading. However, model performance significantly improved when both ENSO/IOD signals and seasonal aerosol loadings were introduced. © 2012 Royal Meteorological Society.

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