ISSN: 0125-2364, Online ISSN: 2586-9531

Volume 43 No.2 April-June 2015


P.173-189

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What is “biological age” and how can it be measured?

อายุชีวภาพคืออะไรและสามารถตรวจวัดได้อย่างไร

ลดาวัลย์ เบญจวงศ์   รินา ภัทรมานนท์   และ   อัครินทร์ ไพบูลย์พานิช

Biological age (BA) reflects the actual state or true global state of the body, which could be equal to, more than, or less than the chronological age of a person. BA is considered to be an innovation in health care, since it can link to diseases associated with aging such as cardiovascular disease, liver function abnormalities, diabetes and cancer. The acquisition of biological age can be done in several ways.  For example, one could look into the live blood cells, or use mild electrification to assess the overall health of the body, or use data from online health surveys. Gerontologist, statisticians, and those from related fields, especially from Korea and Japan, have developed many BA models used for their respected countries’ populations.  They have found that biological age is an important tool in anti-aging science and health care, because it helps people to become aware of their health status and leads them to take better care of themselves, while searching for the causes of their advanced BA.


P.190-204

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Flavour Compounds in Wine

สารประกอบที่ให้กลิ่นรสในไวน์

อรอง จันทร์ประสาทสุข

Wine is an alcoholic beverage which obtained from the fermentation of grape berry or juice constituents, principally the sugars, to a wide range of volatile and non-volatile end products by yeasts under anaerobic condition, consequently the alcohol content of final wine is 9-15%v/v. Additionally, the compounds are formed during the fermentation can generate the wine body and flavours which are the unique characteristic of wine. The wine flavours are composed of more than 1000 compounds which originated from (1) raw material: grape berry and varietal aromas (2) fermentation and (3) aging. The grapes contribute to various non-volatile compounds which are organic acids, terpene compounds and tannin. These compounds canbe metabolized within yeast cells to both of various volatile and non-volatile derivatives that play the important role in the aroma and taste of final wine, namely, alcohols, esters, aldehydes and ketones which are substantially responsible for the bouquets and individual characteristics of a wine. After the fermentation, aging is the process to increase the flavour complexity of wine via a slight oxidation of some either primary or secondary products in wine, and the compounds could be extracted into the wine from the wood casks. The understanding of these compounds formation would help determine the main factors influencing on the wine flavours production and control the consistency of wine quality.


P.205-211

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A Greatly Useful of GABA for Health

คุณประโยชน์ของสารกาบาที่มีต่อสุขภาพ

จันทรพร ทองเอกแก้ว

γ-aminobutyrate or GABA is synthesized from glutamate using the reaction of decarbaxylation. It is the chief inhibitory neurotransmitter in the mammalian central nervous system. It plays a role in regulating neuronal excitability throughout the nervous system that makes human brain relaxing and anti-anxiety. GABA is also directly responsible for anterior pituitary encouraged which increases the amount of human growth hormone and the regulation of muscle tone. In medicine, GABA is used for some neurological disorder treatment such as sleep disorder, anxiety and epilepsy by oral administration. There is also more scientifically and medicinally relevant evidence that GABA has a blood-pressure-lowering effect, low density lipoprotein-lowering effect, preventive effect on Alzheimer’s disease and an inhibitory action on leukemia cell proliferation and has a stimulatory action on the cancer cell apoptosis.


P.212-221

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Species Composition of Phytoplankton in the Gastrointestinal Tract of Hard Clam (Meretrix meretrix) in the Coastal Area of Laem Phak Bia: The King's Royally Initiated Laem Phak Bia Environmental Research and Development Project, Phetchaburi Provi

องค์ประกอบชนิดแพลงก์ตอนพืชในท่อทางเดินอาหารหอยตลับ (Meretrix meretrix) บริเวณชายฝั่งทะเลแหลมผักเบี้ย: โครงการศึกษาวิจัยและพัฒนาสิ่งแวดล้อมแหลมผักเบี้ย อันเนื่องมาจากพระราชดำริ จังหวัดเพชรบุรี

เสถียรพงษ์ ขาวหิต   เกษม จันทร์แก้ว   วศิน อิงคพัฒนากุล   อรอนงค์ ผิวนิล   และ   อนุกรณ์ บุตรสันติ์

Species composition of phytoplankton in the gastrointestinal tract of Meretrix meretrix was examined. Meretrix meretrix were collected from the coastal area of Laem Phak Bia, The King's Royally Initiated Laem Phak Bia Environmental Research and Development Project, Phetchaburi Province during May, 2012 to April, 2013. Species composition of phytoplankton was dominant by Coscinodiscus sp. (58.88%), followed by Cyclotella sp. (30.25%), Oscillatoria sp. (3.91%), Protoperidinium sp. (1.74%), Paralia sulcata (1.52%), Thalassiosira sp. (1.51%), Synedra sp. (1.30%) and Skeletonema sp. (0.88%) respectively of there, only Coscinodiscus sp. was found incomplete cell (39.72%).


P.222-231

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Exploitation of Eri – Mulberry Silkworm Degumming Solution for Cultivation of Entomopathogenic Bacteria and Its Efficiency to Control Beet Armyworm

การใช้ประโยชน์จากน้ำต้มกาวไหมอีรี่ – ไหมหม่อนในการเพิ่มปริมาณเชื้อแบคทีเรียกำจัดแมลงและประสิทธิภาพในการป้องกันกำจัดหนอนกระทู้หอม

ศิวิลัย สิริมังครารัตน์   เดือนเพ็ญ วงค์สอน   และ   วีระศักดิ์ ศักดิ์ศิริรัตน์

The degumming waste water of eri and mulberry silkworm was studied on the exploitation by using as a medium for cultivation of a major bacteria as an insect biopesticide, Bacillus thuringiensis var. kurstaki (Btk) and B. thuringiensis var. israelensis (Bti). Distilled water and sodium carbonate (Na2CO3) solution were used as degumming treatment. Degumming water using distilled water or Na2CO3 solution was mixed with nutrient broth (NB) or direct use as the cultured media. The result showed that in case of using distilled water and comparing to NB, the Btk and Bti grew the best on NB (2.95×109 and 1.18×109 cfu/ml), respectively. The subordinate treatment for Btk was NB + eri degumming water (EDW) + mulberry degumming water(MDW) (2.63×109 cfu/ml), which was not significantly different to NB. However, for Bti the following treatment was NB + EDW (7.88×108cfu/ml) but was statistically significant (P<0.05) to NB. On the other hand, using Na2CO3 as degumming solution, the Btk and Bti grew the best in NB + eri degumming Na2CO3 solution (EDS) + mulberry degumming Na2CO3 solution (MDS), which exhibited bacterial cells of 4.94×109 and 4.04×109 cfu/ml, respectively. The Btk obtained from cultivation with different media were tested in laboratory on the efficiency to control beet armyworm (Spodoptera exigua). It was revealed that the infected mortality of S. exigua was 90.00, 63.33, 56.67 and 56.67% from NB, EDS, EDW and MDS, respectively.


P.232-248

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Production of Resistant Starch from Rice Flour by Fermentation and Hydrothermal Treatment

การผลิตสตาร์ชทนต่อการย่อยด้วยเอนไซม์จากแป้งข้าวด้วยวิธีการย่อยแป้งด้วยการหมักทางธรรมชาติร่วมกับการให้ความร้อนและความชื้น

ศันสนีย์ อุดมระติ   ประจงเวท สาตมาลี   และ   วิภา สุโรจนะเมธากุล

The objectives of this research were to investigate the effect of fermentation and heat-moisture treatment (FHMT) on resistant starch (RS) content and physicochemical properties of rice flour. Rice flour (LuengPratil variety), fermented at room temperature for 1, 2, 3 and 4 days followed by heat-moisture treatment (HMT), were heated at 105 or 115oC for 1 hour after adjusting the moisture content to 20 or 25%. RS content of FHMT flour ranged from 1.95-5.92% depending on type of treatment. FHMT flour with the highest RS content 5.92% was prepared at fermentation time of 1 day and HMT condition at moisture content of 25% and 105oC. The viscosity of FHMT flour was analyzed by using RVA. The peak viscosity, trough, breakdown, final viscosity and set back were decreased, compared with native flour. The hardness of FHMT gel was also deceased. The thermal properties of FHMT flour, gelatinization and retrogradation, were determined by Differential scanning calorimetry. The onset temperature, peak temperature and conclusion temperature of gelatinization of FHMT flour were increased and the gelatinization temperature range was broader, whereas enthalpy of gelatinization was decreased compared with native flour. FHMT tended to decrease retrogradation of amylopectin.


P.249-259

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Development of Wooden Charcoal for Toluene Adsorption

การพัฒนาวัสดุดูดซับไอระเหยสารโทลูอีนจากถ่านไม้

องอาจ สุยะพันธ์   กมลขวัญ ไชยศรีหา   นิศารัตน์ ทองอินทร์   อัครเดช ศรีชาดา   พิรัชฎา มุสิกพงศ์   และ   ขนิษฐา มีวาสนา

Our experimental research emphasized on the development of the rubber-based charcoal adsorbent. Two types of wooden charcoal were prepared from Tamarind Tree (Tamarindus indica) and Semal tree (Bombax ceiba L.). The adsorption experiments were conducted in the test chamber. The toluene concentration in the chamber was analyzed every 5 minutes using gas chromatography. The maximum adsorption capacities found within experimental time (50 minutes) were 393.05 and 379.24 mg/g for Tamarind tree and Semal tree, respectively. Because of its higher adsorption capacity, Tamarind tree charcoal power was chosen to further develop as an adsorbent. The adsorbent sheet was developed by mixing Tamarind tree charcoal with rubber. Then the mixing was press to make adsorbent sheet. The adsorption capacity of the adsorbent sheet was also studied. However, the toluene adsorption capacity of the developed adsorbent sheets (202.96 mg/g) was found to be lower than that of charcoal adsorbents. The decrease of surface area was the main reason of this finding.


P.260-266

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The Efficiency of Filter Media Used in Trickling Filter in Wastewater Treatment

ประสิทธิภาพวัสดุตัวกลางในการบำบัดน้ำเสียระบบโปรยกรอง

ปริญญา ไกรวุฒินันท์   และ   อัจฉรา โลราช

The objectives of this study were to determine the efficiency of three filter media (filter matte, bioball, and gravel) for Trickling Filter in the wastewater treatment and then to compare the flow rates of wastewater fed into the system. The results revealed that filter matte had efficiency higher than the bioball and gravel in wastewater treatment. The treatment efficiencies of filter matte for Chemical oxygen demand (COD), Biochemical oxygen demand (BOD), and Total kjeldhal nitrogen (TKN) were 91.7, 79.0, and 80.4%, respectively. However, the bioball showed the treatment efficiencies for COD, BOD, and TKN about 80.0, 23.8, and 72.9%, respectively whereas gravel showed the treatment efficiencies for COD, BOD and TKN around 74.0, 19.5, and 67.2%, respectively. Then, the filter matte was applied into the system to compare the efficiency of wastewater treatment among three wastewater flow rates; low (2 L/hr), medium (4 L/hr), and high (8 L/hr). The medium flow rate had the highest treatment efficiencies for COD (91.7%), BOD (79.0%), and TKN (80.4%). The result also indicated that treated wastewater quality meet standard criteria of wastewater quality for household.


P.267-283

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The Evaluation of Phytochemical Content, Antioxidant Activity and Total Phenolic Content of the Native Mango in Chachoengsao Province

การประเมินปริมาณสารพฤกษเคมีบางประการ ฤทธิ์ต้านอนุมูลอิสระ และปริมาณสารกลุ่มฟีนอลิกของมะม่วงพื้นเมืองจังหวัดฉะเชิงเทรา

ดวงพร ภู่ผะกา

Mango is a traditional herb having medical effects. It has been used widely in alternative medicine and sold as economic crop for fresh consumption in both inbound and outbound. The aim of this research was to study chemical composition, antioxidant activity, beta-carotene, lycopene contents, total phenolic contents, of Thai native cultivar mangos in Chachoengsao province such as Nam dok mai, Kaiteuk and Mahachanok. The contents of total phenolic compound and Beta-carotene, and lycopene were determined by HPLC. The antioxidant activities were also determined using DPPH and FRAP methods. The results showed that total phenolic content of Thai native cultivars of mango was 2.78-4.12 mg gallic acid/100 g FW, and was slightly different among cultivars. The “Nam dok mai” has the highest total phenolic content, least in second level from “Mahachanok” for DPPH activity, and FRAP activity. The beta-carotene content was found to be 2.29-3.79 mg/100g in green mangos, and 20.54-50.32 mg/100g in ripe mangos. The “Mahachanok” cultivar was found to have the highest beta-carotene content whereas the “Kaiteuk” cultivar was found to have the least beta-carotene content. Lycopene content was enough to be detected in three cultivar mangos about 0.22–0.28 mg/100 g FW. The “Nam dok mai” cultivar of mango gave the highest lycopene content about 0.28 0.28 mg/100 g FW, next “Kai teuk” and “Mahachanok” cultivar about 0.25 and 0.22 mg/100 g FW. The flavonoid content was 0.27-185.25 mg/100 mg in three cultivars. The ripe mango was found around 0.12-978.12 mg/100g The “Nam dok mai” cultivar of mango gave the highest flavonoid content about 978.12 mg/100 g FW


P.284-296

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A Categorical Data Analysis of Heart Disease Levels Using Generalized Linear Models and Odds Ratios

การวิเคราะห์ข้อมูลจำแนกประเภทของระดับการเป็นโรคหัวใจ ด้วยตัวแบบเชิงเส้นนัยทั่วไปและอัตราส่วนออดส์

วริฐา เกตุแก้ว   สุพัตรา เอี้ยงอารีย์   และ   วีรานันท์ พงศาภักดี

The analysis of risk factors affecting the probability of category levels due to heart disease is evaluated. Two cases are considered, case 1: responses are divided into two groups:  death and survivors, case 2: responses are divided into 4 groups: non-heart disease and living, heart disease but still living, non-heart disease but death, and heart disease and death. The medical risk factors consist of age, body mass index, blood pressure levels, cholesterol levels, stress levels. The research real data with 200 patients were from Afifi and Azen (1979). All analyses are performed using the probit model, logit model and baseline-category logit model run with SAS Enterprise Guide 5.1. The results show the risk factors under the probit model and the logit model are age, blood pressure levels, cholesterol levels and the diagnosis of cardiac ischemia, significantly at 0.05. Those factors from the baseline–category logit models are also age and blood pressure levels, significantly at 0.05. The three generalized linear models are all statistically adequate of fits for the data, significantly at 0.05. It is also found from odds ratio such that the risk factors for age is 3.21266 under the logit model.


P.297-308

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Clustering Technique for International Logistics Container Service Liner

การจัดกลุ่มลูกค้าของบริษัทโลจิสติกส์ ที่ให้บริการขนส่งตู้คอนเทนเนอร์ทางทะเลระหว่างประเทศ

พัชณี มีบัว   และ   จิราวัลย์ จิตรถเวช

This study has been made to find out a proper selection of customer clustering technique to be used in international logistics container service liner enterprise. Four methods were employed in this study: (1) the Hierarchical clustering by Average Linkage (2) Centroid Linkage (3) K-means algorithm and (4) Neural network by Kohonen’s self-organizing maps (SOM). Six variables, namely region, business type, container quantity, port quantity, invoice quantity, and service amount were employed in the study in order to figure out which type of business was the maximum user of services by sea freighter. Appropriate clustering is judged by one that produces the minimum index value. Rating index is defined as the ratio of the weighted separation range within a cluster to the weighted separation range between clusters.

Results of this study show that the SOM 2×2 gives the least index value. The SOM algorithm included 4 customer–clusters according to region and type of business.  Cluster1 involved 9,367 customers in East Asia region, which made up to 30.88 percent of total customers; 43.72 percent of their business dealt with consumer product. Cluster 2 involved 7,232 customers in South Asia, which made up to 23.84 percent of total customers; 36.38 percent of their business was logistics services. Cluster 3 involved 7,391 customers in South East Asia, which made up to 24.37 percent of total customers; 31.90 percent of their business were logistic services. Cluster 4 included customers in North Asia and Central Asia, involved 6,340 customers, which made up to 20.90 percent of total customers; 4,062 customers of these customers are in North Asia–China, Korea, and Japan, and 2,278 customers are in Central Asia–Hong Kong and Taiwan. Of the total customers, 46.37 percent were in logistics services.


P.309-323

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Forecasting the Prices of Jasmine 105 Paddy Rice

การพยากรณ์ราคาข้าวเปลือกเจ้าหอมมะลิ 105

วรางคณา กีรติวิบูลย์

The objective of this research was to forecast the prices of Jasmine 105 paddy rice using time series data from the website of Office of Agricultural Economics with total 212 values during January, 1997 to August, 2014. We divided this time series data into 2 sets, the first set had 204 values from January, 1997 to December, 2013 for constructing the forecasting models by 4 time series analysis techniques: Box-Jenkins method, damped trend exponential smoothing method, combined forecasting method using weights based upon the ordinary least squares regression coefficients, and combined forecasting method using weights based upon the proportion of the values in the eigenvector from the principal component analysis. The second set had 8 values from January to August, 2014 for comparing accuracy of the forecasts via the criteria of the lowest mean absolute percentage error and root of mean squared error. Research findings indicated that for all forecasting methods that had been studied, combined forecasting method using weights based upon the ordinary least squares regression coefficients was the most appropriate method for this time series.


P.324-332

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Simulation of Energy Spectra of Protons from Solar Storm Event on January 27, 2012

การจำลองสเปกตรัมพลังงานของโปรตอนจากเหตุการณ์พายุสุริยะ วันที่ 27 มกราคม ค.ศ. 2012

ชาญเรืองฤทธิ์ จันทร์นอก

We simulated numerically effects of shock acceleration of protons in the solar storm event of January 27, 2012, which was a strong level solar storm in the 24th solar cycle. A model of finite time shock acceleration at the interplanetary medium was used in this study. We found that the simulation results agree well with the measurement of the energy spectra of protons from the PAMELA instrument onboard the Resurs-DK1 satellite.


P.333-345

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Third Body and Evolution of a Binary System FZ Orionis

วัตถุที่สามและการวิวัฒนาการของระบบดาวคู่เอฟแซด โอไรโอนิส

ธนวัฒน์ รังสูงเนิน

The aim of this research work is to study the physical properties of a binary system, FZ Orionis, and it’s evolution by Which the study of the existence of a third body is the interesting for physical property, too. Observations were done using a 0.5 m Richey-Chertian reflecting telescope connected to CCD Photometry by a standard BVR system at Sirindhorn Observatory, Chiang Mai and Regional Observatory for Publics, Nakhon Ratchasima. The results have show that the binary system, FZ Orionis is a contact binary according to the Roche’s model with the orbital period change of 4.8416×10-19 sec/year and an orbital period of 0.39998 day. The calculation on the sinusoidal (O-C)2 curve shows that the exist a third body in this binary system. The first calculated data set using WD program show that FZ Orionis has a mass ratio of 0.14, an inclination of 68.24  ± 0.359 degree, and the second data set show the existence of the third body . The calculated result shown that the light of the third body is very low, by which the values of L3b, L3v and L3R are -0.0473, -0.0362 and -0.0427 respectively. So, the light of the third body does not affect to the change of the light curves of FZ Orionis. The result indicates the existence of a very less massive body which may lead to the further study on the possibility of the existence of a planet on this binary system.


P.346-351

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The Noncontact Atomic Force Microscopy Model (NC-AFM)

แบบจำลองการใช้งานกล้องจุลทรรศน์แรงอะตอมแบบ Noncontact

Choojit Sarapak1   and   Tussatrin Wannaketsiri

Modeling a noncontact atomic force microscope (NC-AFM) to enhance the college students’ understanding of how the AFM operates. The model introduces the students’ comprehension of how to use the nanotechnology tool for research. The NC-AFM senses nanoparticles by measuring Van der Waals interactions (strong force) which will happen at the atomic scale for evaluating properties and manipulating nanoparticles.