 ผลงานตีพิมพ์ในวารสารวิชาการAbsolute cross sections and kinetic energy release for doubly and triply charged fragments produced by electron impact on CO+ผู้แต่ง: Lecointre, J, Belic, DS, Jureta, JJ, Becker, K, Deutsch, H,  Dr.Jumras Limtrakul, Professor , Mark, TD, Probst, M, Defrance, P, วารสาร:  
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ผลงานตีพิมพ์ในวารสารวิชาการToxicokinetics and absolute oral bioavailability of melamine in broiler chickensผู้แต่ง:Dr.Saranya Poapolathep, Associate Professor , Ms.Naruamol Klangkaew , Mr.Peera Arreesrisom, Assistant Professor , Dr.Supaporn Isariyodom, Associate Professor , Sugita-Konishi, Y., Kumagai, S., Dr.Amnart Poapolathep, Associate Professor , วารสาร: |
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ผลงานตีพิมพ์ในวารสารวิชาการNewly calculated absolute cross-section for the electron-impact ionization of C2H2+ผู้แต่ง:Deutsch, H, Becker, K, Defrance, P, Probst, M, Dr.Jumras Limtrakul, Professor, Mark, TD, วารสาร: |
ผลงานตีพิมพ์ในวารสารวิชาการAbsolute configuration of azaphilones from Monascus kaoliang KB9 and solvent effects on their keto and enol formsผู้แต่ง:Promsuk, G., Dr.Pitak Chuawong, Associate Professor , Songjanthuek, P., Thaisri, S., Yongsmith, B., Dr.Pakorn Wattana-Amorn, Associate Professor , วารสาร: |
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ที่มา:EUROPEAN PHYSICAL JOURNAL Dหัวเรื่อง:Newly calculated absolute cross-section for the electron-impact ionization of C2H2+ |
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ผลงานตีพิมพ์ในวารสารวิชาการAnomaly Detection Using a Sliding Window Technique and Data Imputation with Machine Learning for Hydrological Time Seriesผู้แต่ง:ลัทธวิทย์ กุลานุวัฒน์, Dr.chantana chantrapornchai, Professor , Montri Maleewong, Associate Professor , Dr.Papis Wongchaisuwat, Associate Professor , สุภลักษณ์ วิมาลา, กนกศรี ศรินนภากร, สุรเจตส์ บุญญาอรุณเนตร, วารสาร:  |
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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Extraction Methods for Tuberose Oil and Their Chemical Components) ผู้เขียน:Prapassorn Rakthaworn, นางอุไรวรรณ ดิลกคุณานันท์, Udomlak Sukkatta, ดร.สรัญญา วัชโรทัย, รองศาสตราจารย์ , Vichai Haruethaitanasan, Potechaman Pitpiangchan, Putthita Punjee สื่อสิ่งพิมพ์:pdf AbstractThe objectives of the project were to compare essential oil extraction methods from the doubleflower variety of tuberose (Polianthes tuberosa L.). The flowers were extracted by cold or hot enfleurage, or by solvent extraction with hexane or petroleum ether. The chemical composition of the tuberose absolutes was analyzed by gas chromatography-mass spectrometry (GC-MS). The results showed that percentage yields of tuberose oil from cold enfleurage, hot enfleurage, hexane and petroleum ether extractions were 0.3137%, 6.5808%, 0.0279% and 0.0182%, respectively. The main chemical component detected in both enfleurage absolutes was methyl benzoate, while benzyl benzoate and pentacosane were found to be the main chemical components in hexane and petroleum ether absolutes, respectively. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Comparative Study of Scented Compound Extraction from Plumeria obtusa L.) ผู้เขียน:Potechaman Pitpiangchan, นางอุไรวรรณ ดิลกคุณานันท์, Udomlak Sukkatta, ดร.สรัญญา วัชโรทัย, รองศาสตราจารย์, Vichai Haruethaitanasan, Putthita Punjee, Prapasson Rukthaworn สื่อสิ่งพิมพ์:pdf AbstractVarious scented compound extraction methods were studied using Plumeria obtusa L. flowers: water distillation, steam distillation, water-steam distillation, hexane extraction, petroleum ether extraction, and cold and hot enfleurage. Chemical compounds of the extracts from each method were analyzed by gas chromatography-mass spectrometry (GC-MS). The results showed the percentage yield of the extracts was 0.0167, 0.0045, 0.0342, 0.4170, 0.3510, 0.3969 and 12.2400%, respectively. The major chemical component in the essential oils from all distillation methods and both solvents was benzyl salicylate, but the extracts from cold and hot enfleurage were linalool and n-undecanoic acid, respectively. |
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หัวเรื่อง:การศึกษาคุณสมบัติเบื้องต้นเอนไซม์ไลเพสจากรำข้าว ผู้เขียน:ดร.สาโรจน์ ศิริศันสนียกุล, ศาสตราจารย์ , Prapaipis Daechophan, ดร.สิรี ชัยเสรี, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe lipase enzyme extracted from defatted Thai scented rice bran with calcium chloride solution which has been purified by ammonium sulfate precipitation, followed by dialysis had the specific activity of 2.04 units/mg protein and 1.32 times that of starting crude extract. The semi-purified lipase obtained showed the optimum pH at 7.6 with equilibrium rate constants, K1 and K2, and maximum enzyme reaction rate, (EA)max of 3.2 x 10-7, 1.7 x 10-9 M and 44.2 units/ml, respectively. Based upon the enzyme kinetics of the temperature effect, the lipase enzyme had the activation energy, Ea = 11.03 kcal/mol and the energy for the thermal inactivation, ?Hd =30.8 kcal/mol. The absolute reaction rate function with the remained parameter constants estimated by non-linear regression analysis was EA = . As a result, the maximum enzyme activity of 42.7 units/ml was calculated with the mentioned equation at Tmax equal to 35oC. Moreover, the Thai scented rice bran lipase were stable over the pH range from 4 to 9 and the temperature range from 20 to 45oC, but completely lost the activity by heating at 50oC for 60 min. Finally, the model for lipase activity affected by pH and temperature was proposed and figuredly simulated to predict the enzyme activity under various pH and temperature conditions. |