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Phitsanulok, Thailand

Pibulsongkram Rajabhat University is a university in Phitsanulok, Thailand. Wikipedia.

Poolprasert P.,Pibulsongkram Rajabhat University
Zootaxa | Year: 2014

Dachtylembia gen. nov. (Embioptera: Teratembiidae), is described and illustrated based on specimens of a new species (D. siamensis) collected from Thailand. The geographical distribution of this species in Thailand is mapped Copyright © 2014 Magnolia Press. Source

Srikaeo K.,Pibulsongkram Rajabhat University | Sopade P.A.,University of Queensland
Carbohydrate Polymers | Year: 2010

Ten instant rice porridges made from Jasmine rice mixed with other ingredients purchased from commercial outlets in Thailand were studied for their functional properties and starch digestibility. The starch contents of the samples varied from 59-84 g/100 g dry solids. Differential scanning calorimetry showed a single endothermic peak located around 56-82 °C for most samples, indicating that starch was partially gelatinized during processing. However, two samples did not show any transition enthalpy to suggest that they were completely gelatinized during processing. Rice porridge samples with similar ingredients exhibited different pasting properties because of significant effects of processing and possibly the type of ingredients, and differences in their hydration/swelling behaviours. From in vitro starch digestion, the rice porridge samples were high glycaemic index (GI) foods with calculated GIs ranging from 68 to 97. Generally, rice porridges that were completely gelatinized gave the highest GI values because gelatinization, in the absence of pronounced retrogradation and molecular reorganization, enhances digestibility. The present study demonstrated the importance of non-rice ingredients in the functional and digestion properties of rice porridge samples, and the need to understand how spices, animal and plant proteins, flavour enhancers (e.g. monosodium glutamate), and flavourings influence GI of rice porridges so as to guide processing and selection of ingredients. © 2010 Elsevier Ltd. All rights reserved. Source

Chammui Y.,Pibulsongkram Rajabhat University
International Food Research Journal | Year: 2016

A single-drop microextraction (SDME) has been developed for the GC-MS determination of phenolic contents in water samples. Factors affecting extraction efficiency were studied including the organic solvent, ionic strength, drop volume, pH of the solution, stirring rate, temperature and time of extraction. Under the selected conditions, i.e., the organic solvent, ionic strength, drop volume, pH of the solution, stirring rate, extraction temperature and extraction time were hexyl acetate, 1% of NaCl, 2.5 μL of drop volume, pH 2, 200 rpm of stirring rate, 30°C of extraction temperature and 10 min of extraction time, respectively. After extraction step, the acceptor drop was withdrawn and directly injected into a GC-MS instrument for analysis. This method is a promising alternative for the sensitive determination of phenolic contents. In addition, the SDME also demonstrated that the method is simple, fast and efficiently for determining of phenolic contents from water. Source

Ninjiaranai P.,Pibulsongkram Rajabhat University
Macromolecular Symposia | Year: 2015

Pineapple is a tropical plant native to South East Asia. Pineapple leaf fiber is rich in cellulose, relatively inexpensive and abundantly available. Furthermore, it has the potential for polymer reinforcement, and is more environmentally friendly than films that are reinforced with the artificial additives. The objectives of the present work were to compare the mechanical and water vapor barrier properties of biopolymer films, chitosan and polyethylene glycol 6000 (PEG 6000), with and without incorporating pineapple leaf fibers which had been chemically treated in an alkaline solution. The water vapor permeability (WVP), % soluble matter (SM), moisture index, tensile strength (TS) and % elongation (E) were investigated in these films. The composite yellow film exhibited an excellent water vapor permeability of 5.14 ± 1.87 g mm m-2 day-1 kPa-1. The solubility was 65.00 ± 0.97% while the moisture index was in the range of 10.50-31.20%. The results suggested that biodegradable films could be advantageously used to replace polymer films in the packaging of freshly processed vegetables and thereby reduce the negative environmental impact of polymeric films. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

Yiarayong P.,Pibulsongkram Rajabhat University
Gazi University Journal of Science | Year: 2016

In this paper, we study left ideals, left primary and weakly left primary ideals in Γ -LA-rings. Some characterizations of left primary and weakly left primary ideals are obtained. Moreover, we investigate relationships left primary and weakly left primary ideals in Γ -LA-rings. Finally, we obtain necessary and sufficient conditions of a weakly left primary ideal to be a left primary ideals in Γ -LA-rings. © 2016 Gazi University Eti Mahallesi. All rights reserved. Source

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