PSRU Journal of Science and Technology https://ph01.tci-thaijo.org/index.php/Scipsru <p>&nbsp; &nbsp; &nbsp; &nbsp; PSRU Journal of Science and Technology is a peer-reviewed journal of Faculty of Science and Technology, Pibulsongkram Rajabhat University. The journal devoted to publish of&nbsp; original research article and review article in science and technology. The journal is indexed in TCI Tier 2.</p> <p>Three issues are published a year (January-April, June-August and September-December).</p> <p>Online ISSN 2672-9741</p> <p>Print ISSN 2465-5112</p> คณะวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยราชภัฏพิบูลสงคราม en-US PSRU Journal of Science and Technology 2465-5112 <p>กองบรรณาธิการขอสงวนสิทธิ์ในการปรับปรุงแก้ไขตัวอักษรและคำสะกดต่างๆ ที่ไม่ถูกต้อง และต้นฉบับที่ได้รับการตีพิมพ์ในวารสาร PSRU Journal of Science and Technology ถือเป็นกรรมสิทธิ์ของคณะวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยราชภัฏพิบูลสงคราม และ<br>ผลการพิจารณาคัดเลือกบทความตีพิมพ์ในวารสารให้ถือมติของกองบรรณาธิการเป็นที่สิ้นสุด&nbsp;</p> EVALUATION OF THE PROGENY TEST AND ESTIMATING THE STEM VOLUME, BIOMASS AND CARBON STORAGE OF 12-YEAR-OLD TEAK IN KHON KAEN PROVINCE https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/244510 <p>This study aims to analyze and test on full sip control pollination of teak and in order to evaluate teak volume, bio-mass and carbon contain of 12 years old teak plantation, Economic value analysis was evaluated between the breeding seedling and the natural seedling. The study was conducted in Dong Lan Silvicultural Research Center, Amphoe Choompae, Khon Kaen Province. The study also tested and analyzed data of 54 samples consisting of 50 seedlings from full sip control pollination, seedling from 3 mother trees and 1 seedling from natural teak. Randomization completed block design (RCBD) was demonstrated with 4 replications. We determined planting space as 4x4 m and 9 seedlings were selected from each seedling number. The results showed that good characteristics of mother trees as No. V194 and No. V211. The good characteristics of father trees were No. V130, No. V290 and No. V146, respectively. The last one was No. V290 also showed good characters both mother and father trees. Quantitative analysis, the average stem volume was 14.616 m<sup>3</sup>/rai. The highest stem volume was No. C1 that provided average volume as 0.366 m<sup>3</sup>/tree which is about 1.8 times of No. E5. The total biomass showed that 7,198.74 kg/rai. The carbon storage was 3,455,358 kg carbon/rai and CO<sub>2</sub> contains as 12,669.766 kg carbon/rai. Value analysis of breeding seedling &nbsp;valued at 4,179.60 Baht/tree. Our study can be used to promote and extend to farmers or those interested to grow teak plantation. Teak seedling from the full-sip control pollination provenance provided the yielding-approximately 3 times of common seedlings both in the monoculture and agroforestry. Finally, the good management in forest plantation by using appropriate silvicultural practices will provide high productivity and quality of the teakwood.</p> Kritchana Nissa Thanakorn Lattirasuvan Teeka Yothapakdee Piyapit Khonkaen Copyright (c) 2021 PSRU Journal of Science and Technology 2021-12-08 2021-12-08 6 3 1 16 PHYTOCHEMICALS, TOTAL PHENOLIC CONTENTS AND ANTIOXIDANT ACTIVITIES OF WATER AND ETHANOL EXTRACTS FROM INCA PEANUT (Plukenetia volubilis L.) LEAVES https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/244742 <p>Inca peanut leaves (<em>Plukenetia volubilis </em>L.) is generally consumed in form of tea but there is less research which study about bioactivity of Inca peanut leaves cultivated in Thailand. The objectives of this study were to evaluate the phytochemical constituents, total phenolic contents and antioxidant activities of Inca peanut leaves. The fresh leaves and dried leaves were extracted by water (30°C), warm water (60°C), ethanol 95% (30°C) and warm ethanol​ 95% (60°C). It was found that dried leaves extracted with warm water (DW60) provided the highest percentage yield (19.01±0.43%w/w). The phytochemical screening of the extracts revealed the presence of phenols, flavonoids and alkaloids in all extracts. The main minerals in Inca peanut leaves were calcium, silicon and potassium. Dried leaves extracted with warm ethanol (60°C) (DE60) showed the highest (p&lt;0.05) amount of total phenolic contents (22.05±1.20 mg GAE/g DW). The antioxidant activities were analyzed by ABTS radical cation scavenging activity and DPPH radical scavenging activity. It was found that DW 60 exhibited the highest ABTS radical cation scavenging activity (193.07±6.14 mg AEAC/g DW, IC50 3.07±0.91 µg/ml) while DE60 exhibited the highest DPPH radical scavenging activity (27.27±0.71 mg AEAC/g DW, IC50 119.81±4.35 µg/ml). Thus, the results of this work can be concluded that dried leaves extract obtained by warm water and warm ethanol 95% are suitable for further use as antioxidant for prevention and management of free radicals mediated oxidative stress.</p> Narunan Wuttisin Paphitcha Silakhet Chanwut Suthaphan Copyright (c) 2021 PSRU Journal of Science and Technology 2021-12-08 2021-12-08 6 3 17 33 EFFECTS OF FERTILIZER PELLETS FROM HYTHANE PRODUCTION FROM STILLAGE AND BREWER’S YEAST CELLS CO-DIGESTED OF ORGANIC MATERIALS ON GROWTH AND YIELD OF RICE https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/244783 <p>The objective of this research was to study the effect of pellet fertilizer from waste hythane production process from residues of sewage and yeast plus organic materials on rice growth and yield. The experiment design was a Completely Randomized Design (CRD) of 11 treatments with 3 replications number per treatment: treatment 1 unfertilized (control), treatment 2 chemical fertilizer formula 15-15-15, treatment 3-11 fertilizer pellets formula 1-9 were applied respectively at Plant Science Field, Faculty of Food and Agricultural Technology, Pibulsongkram Rajabhat University. The result showed that the chemical fertilizer provided the highest growth and yield of rice in terms of plant height of 113.87 cm, 23.33 plants per clump, and fresh weight of seeds of 799.15 kg/rai. The second highest growth and yield of rice was treatment 9 (fertilizer pellets formula 7). While the lowest growth and yield of rice was the controlled treatment. The properties of fertilizer pellets produced was qualified to meet the requirement of the Standards for Organic Fertilizer B.E.2557 (2014).</p> Sureewan Sittijunda Punnada Tharangsri Chatchawin Nualsri Chakkrit Sreela-or Copyright (c) 2021 PSRU Journal of Science and Technology 2021-12-09 2021-12-09 6 3 34 44 TUNNELING MAGNETORESISTANCE OF A NORMAL METAL/FERROMAGNETIC INSULATOR/FERROMAGNETIC HETEROSTRUCTURE https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/244521 <p>This work calculated the tunneling magnetoresistance resistance (TMR) of a normal metal/ferromagnetic insulator/ferromagnetic (N/FI/FM) junction by using the scattering method and the free-electron approximation in one dimensional system. It was found that the TMR can be enhanced when either barrier high or the thickness of ferromagnetic insulator increased. In addition, the ferromagnetic insulator with a large exchange coupling energy can also increase TMR. This result can be developed or designed the spintronics device in future.</p> Warintorn Wongwai Aek Jantayod Copyright (c) 2021 PSRU Journal of Science and Technology 2021-12-09 2021-12-09 6 3 45 59 DIVERSITY OF TRADITIONAL FERMENTED FISH OF THAI - LAOS, THAI - KHMER AND THAI - KUI ETHNIC GROUPS IN SURIN PROVINCE https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/244789 <p>The objectives of this research were to study the diversity of local fermented fishes from Ethnic groups of Thai-Laos, Thai-Khmer and Thai-Kui in Surin Province.Studied the documents and informations which gathering from the provincial government revealed the distinct home land of 3 Ethnic groups. Moreover, the survey research of this studied from those 3 Ethnic groups. Research informations such as fish types, places, time, photograph of communities context and fermented fish products were collected by taking notes, photograph and various kinds of other collection methodologies. After that these data has been used for analysed and identified the variety of fermented fish products.The results showed that the difference varieties of fermented fish products in each village. Observation in 24 villages of Thai-Laos group, the results showed that 24, 21, 21, 9, 4 and 3 villages were found fermented fish, salt-pickled shrimp, pickled fish, sour fish and fermented rice, marinated fish roe and&nbsp; marinated &nbsp;fish&nbsp; fillet, respectively. Whilst, fermented fish, salt-pickled shrimp, pickled fish, sour fish and fermented rice and marinated fish roe were found in 34, 34, 33, 11 and 1 villages, respectively when 34 villages of the group Thai-Khmer were scrutinized. Furthermore, the survey outcome from 34 villages of the group Thai-Kui showed that 34, 31, 32, 9, 3 and 3 villages were found fermented fish, salt-pickled shrimp, pickled fish, sour fish and fermented rice, marinated fish roe and marinated fish fillet, respectively. Fermented fish products revealed in all Ethnic groups were&nbsp; fermented fish (100%), salt-pickled shrimp and pickled fish (93.47%), sour fish and fermented rice (31.52%), marinated fish roe (8.69%) and&nbsp; marinated fish&nbsp; fillet&nbsp; (6.52%), respectively. The communities that the most of different types of fermented fish products were found in the Thai-Laos group&nbsp; (Ban Non Daeng, Yang Subdistrict, Sikhoraphum District, Ban Hanhee, Don Rad Subdistrict, Rattanaburi District, Ban Bueng Mai, Kae Subdistrict, Rattanaburi District and Thai-Kui group (Ban Nong Wa, Nong Phai Lom Subdistrict, Samrong Thap District). Food security of the local fermented fish products can be happened and sustained when the people in the communities realized how important of an information, quality and consumption culture of their fermented fish products. From such realization will be leaded to the conservation of local production wisdom processes and water source of fishes.</p> Kotchanipha Udomthawee Sopit Vetayasuporn Nongnut Sarapee Jutamas Yoomark Piyarat Meekaew Copyright (c) 2021 PSRU Journal of Science and Technology 2021-12-13 2021-12-13 6 3 60 75 EFFECT OF TORREFACTION TEMPERATURE ON PROPERTIES OF PINE SAWDUST https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/245715 <p>In this research, the torrefaction of pine sawdust was investigated at 3 temperature levels, i.e., 250, 275 and 300 °C and reaction times of 30 min. The effect of the temperature severity on the mass yield and fuel properties of solid products was studied, namely, ultimate analysis, moisture and ash content, higher heating values, atomic ratio, including functional group analyses. The research found that as the temperature increased from 250 °C to 300 °C, the mass yield decreased from 86.35% to 62.63%, whereas the carbon content increased from 49.26% to 60.01% and the higher heating value increased from 19.64 to 24.54 MJ/kg. Due to the increase of carbon content and the decrease of oxygen and hydrogen content, the atomic oxygen-to-carbon (O/C) and hydrogen-to-carbon (H/C) ratios of pine sawdust torrefied at 300 °C decreased and possessed lignite-like qualities.&nbsp;Therefore, pine sawdust treated by torrefaction is suitable for use combined with other solid fuels, including replacing coal, in power plants.</p> Jarunee Khempila Pumin Kongto Copyright (c) 2021 PSRU Journal of Science and Technology 2021-12-13 2021-12-13 6 3 76 93 DETECTION OF COLLETOTRICHUM GLOEOSPORIOIDES IN “NAM DOK MAI” MANGO USING LOOP-MEDIATED ISOTHERMAL AMPLIFICATION (LAMP) METHOD https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/245301 <p>The molecular genetic techniques for detection of <em>Colletotrichum gloeosporioides</em> in “Nam Dok Mai” mango was studied. The objective of this research was to develop analytical methods for <em>C. Gloeosporioides</em> of causing anthracnose in Nam Dok Mai mango by using Loop-Mediated Isothermal Amplification (LAMP) technique. In this research, the characteristics of <em>C. gloeosporioides</em> was analyzed by LAMP method. The sensitivity and specificity of C. <em>Gloeosporioides </em>were also investigated. The study of the anthracnose disease symptoms in “Nam Dok Mai” mango which caused by <em>Colletotrichum gloeosporioides</em> infection showed that slow colony growth on potato dextrose agar; PDA grayish white colony, Single cell conidia, oval and colorless and cylindrical spores. The determination of LAMP, It was found that the analyzed from the experiments 20 samples. The study of the sensitivity of DNA detection was found at 50x10<sup>-4</sup> µg/ml. The detection of specificity for other bacteria was found that it did not show any cross-reactivity with other bacterial species. The LAMP technique is a highly accurate DNA at the molecular biology and rapid test. The analyzed most number of samples by using a few of DNA.</p> Dueantem Thongphueak Sasithorn Bhudharak Jirapat Chanthamalee Copyright (c) 2021 PSRU Journal of Science and Technology 2021-12-13 2021-12-13 6 3 94 105 EFFECT OF PLATINUM ON TITANIUM DIOXIDE NANOPARTICLES SURFACES FOR PHOTOCATALYTIC ACTIVITY UNDER ULTRAVIOLET LIGHT https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/244916 <p>Efficacy of platinum loaded titanium dioxide (Pt-TiO<sub>2</sub>)catalyst for degradation of methylene blue (MB) solution under ultraviolet (UV) light were successfully synthesized catalyst by coupling a hydrothermal method with an impregnation method with different ratios of 0.5, 1.0 and 2.0 wt%Pt. Morphologies of samples were characterized by X–ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), Brunauer-Emmett- Teller (BET) specific surface area and X-ray photoelectron spectroscopy (XPS). The results indicated that all the samples were in the anatase and rutile phases of TiO<sub>2</sub>. The Pt particles have oxidation numbers 0 +2 and +4 in the form Pt PtO and PtO<sub>2</sub> distributed on the TiO<sub>2</sub> surface. The Pt-TiO<sub>2</sub> efficacy was tested with 50 mL of 10 mg/L methylene blue (MB) solution under ultraviolet (UV). It was found that the 1.0 wt% Pt-TiO<sub>2</sub> showed the highest degradation efficiency in 150 min which able to increase 25% efficiency of TiO<sub>2</sub>.</p> Weerasak Chomkitichai Copyright (c) 2021 PSRU Journal of Science and Technology 2021-12-14 2021-12-14 6 3 106 120 STUDY ON THE MANUFACTURING WOOD SUBSTITUTED MATERIALS FROM AGRICULTURAL WASTE https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/243992 <p>&nbsp; &nbsp; The aim of this research was to study the effect of a suitable amount of starch wet glue and epoxy on the physical and mechanical properties of the material sheet instead of wood by using corn husk and rice straw mixed with wet glue and epoxy in amount of 125 g 150 g and 175 g, respectively. Then the plywood was compressed by the concrete testing machine. The characteristics of the material sheet instead of wood was described. The physical properties and mechanical properties of the material sheet instead of wood was analyzed by comparing with the TIS standard 876-2547. The results show that the morphology of material sheet instead of wood used in starch wet glue as adhesive in different ratio was not smooth, rough, bent and not straight with different from the shape of the material sheet instead of wood that uses epoxy as a bonding adhesive. The surface is smooth, not rough, not bent, straight and strong. The physical and mechanical properties analysis of the material sheet instead of wood showed that the moisture content of material sheet instead of wood that uses starch wet glue as adhesive were within the acceptable levels as prescribed in <br>the standard but the modulus of rupture, modulus of elasticity, density, water absorption and blistering according to the thickness were not pass the established standard in all proportions. As for the material sheet instead of wood that uses epoxy as adhesive, most of the samples were within the acceptable levels as prescribed in the standard, except for the material sheet instead of wood that uses epoxy in the amount of 125 g and the modulus of elasticity was not pass the established. Therefore, the results of this study found that the plywood production using agricultural waste (Corn husk and rice straw) with epoxy in the amount of 150 g and 175 g can be used as an alternative raw material source for the plywood industry.</p> Trairong Phlansaeng Parichat Techa Chutima Jaiwisan Namfon Inthang Onnicha Siriprachot Copyright (c) 2021 PSRU Journal of Science and Technology 2021-12-14 2021-12-14 6 3 121 134 EFFECT OF COOKING TREATMENTS ON RESISTANT STARCH CONTENT IN LOCAL RICE VARIETY GROWN IN PHETCHABUN PROVINCE https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/244251 <p>Increasing the amount of resistant starch in various rice varieties was the purpose of this research. Rice varieties used in the experiment were Jasmine rice, RD 43, Luem Pua, Khao Hmong, Paya Luem Kaeng and Rong Thanon. First, rices will be cooked in five methods and then analyzed for the amount of resistant starch. It was found that cooked rice had 7.15 - 16.35% of resistant starch depend on polishing and varieties. Brown rice had higher resistant starch than polished rice. Methods of increasing the amount of resistant starch in rice varieties were found that 1) Resistant starch in jasmine rice were 6.52-7.56% while raw rice had resistant starch similar to cooked rice 2) RD 43 had 6.57-8.81% of resistant starch, while the best method for increasing resistant starch in this rice to 18.10% was ultrasonic, autoclaving and chilling, respectively 3) Luem Pua, cooked brown rice by microwave and chilling was increased resistant starch to 26.05% 4) White Hmong had 7.61-11.07% of resistant starch and cooking by rice cooker was increased resistant starch to 37.69% 5) Paya Luem Kaeng had 9.03-9.72% of resistant starch, while cooking by rice cooker and chilling for 60 hours was the best method for increasing resistant starch to 12.89% 6) Resistant starch in Rong Thanon was 8.86-11.10% and the best method was cooking by rice cooker. Therefore, this information can be used in choosing rice consumption. The methods possibly increase the highest amount of resistant starch and make the rice become more health functional food.</p> Sasithon Thaenthong Akabhatkan Patan Nantharak Rodkate Wilasinee Deepanya Ruchira Khoomsab Copyright (c) 2021 PSRU Journal of Science and Technology 2021-12-14 2021-12-14 6 3 135 146 บทบรรณาธิการ https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/247105 <p>บทบรรณาธิการ</p> Copyright (c) 2021 PSRU Journal of Science and Technology 2021-12-14 2021-12-14 6 3 สารบัญ https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/247106 <p>สารบัญ</p> Copyright (c) 2021 PSRU Journal of Science and Technology 2021-12-14 2021-12-14 6 3