C. Jantarat, P. Sirathanarun, Wilaihong Songsrm, Wititta Srinornate, Sujittra Daengprom
A simple and rapid high-performance liquid chromatographic (HPLC) method for determination of arecoline extract from areca nut is reported. Arecoline is a major component cholinomimetic alkaloid found in areca nuts. It was extracted from dried seed powder to obtain high purity before analysis. The contents of arecoline in unripe and ripe areca nuts were compared. The analytical conditions for reverse-phase HPLC with UV detection were as follows: column, a 250 × 4.6 mm I.D., particle size 5 mm, Inertsil ® ODS-3 (GL sciences Inc., Tokyo, Japan); mobile phase, a 88:12 (%v/v) mixture of acetonitrile: phosphate buffer (pH 5.9); column temperature, 25 °C; flow rate, 1 mL/min; and detection at 254 nm. The retention time of arecoline was 5.0 min. The calibration curve of the method was linear (r 2 > 0.99) in the 10 - 200 mg/mL range. Method inter-day precision (RSD) was 0.42 - 1.15 %, and % recovery was 103.23 ± 5.76 % indicating high precision and accuracy of the method. The contents of arecoline in unripe and ripe areca nuts were 0.1434 ± 0.0016 and 0.0944 ± 0.0002 %w/w of dried seed powder, respectively. The method was simple, rapid, precise, accurate and selective to determine arecoline in areca nut extract.
{"title":"A Simple and Rapid HPLC Technique for Determination of Arecoline in Areca Nut (Areca catechu L.) Extract","authors":"C. Jantarat, P. Sirathanarun, Wilaihong Songsrm, Wititta Srinornate, Sujittra Daengprom","doi":"10.2004/WJST.V10I1.439","DOIUrl":"https://doi.org/10.2004/WJST.V10I1.439","url":null,"abstract":"A simple and rapid high-performance liquid chromatographic (HPLC) method for determination of arecoline extract from areca nut is reported. Arecoline is a major component cholinomimetic alkaloid found in areca nuts. It was extracted from dried seed powder to obtain high purity before analysis. The contents of arecoline in unripe and ripe areca nuts were compared. The analytical conditions for reverse-phase HPLC with UV detection were as follows: column, a 250 × 4.6 mm I.D., particle size 5 mm, Inertsil ® ODS-3 (GL sciences Inc., Tokyo, Japan); mobile phase, a 88:12 (%v/v) mixture of acetonitrile: phosphate buffer (pH 5.9); column temperature, 25 °C; flow rate, 1 mL/min; and detection at 254 nm. The retention time of arecoline was 5.0 min. The calibration curve of the method was linear (r 2 > 0.99) in the 10 - 200 mg/mL range. Method inter-day precision (RSD) was 0.42 - 1.15 %, and % recovery was 103.23 ± 5.76 % indicating high precision and accuracy of the method. The contents of arecoline in unripe and ripe areca nuts were 0.1434 ± 0.0016 and 0.0944 ± 0.0002 %w/w of dried seed powder, respectively. The method was simple, rapid, precise, accurate and selective to determine arecoline in areca nut extract.","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"1 1","pages":"57-66"},"PeriodicalIF":0.0,"publicationDate":"2013-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68182288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Khairil, M. Nashriyah, N. Norhayati, Shahril Amin, N. Fatihah
A study was conducted to determine the tree species composition, diversity and above ground biomass at Redang Island, Terengganu. Two plots of 0.1 ha were established at the inland forest and coastal forest of the island. As the result, a total of 387 trees ≥ 5 diameters at breast height (DBH) were recorded. The coastal forest recorded 167 individuals representing 48 species from 37 genera and 26 families while the inland forest had 220 individuals representing 50 species from 43 genera and 25 families. Shorea glauca (Dipterocarpaceae) was the most important species at the coastal forest with a Species Importance Value Index ( SIV i ) of 10.5 % while Dipterocarpus costulatus (Dipterocarpaceae) was the most important species at the inland forest with 13.8 %. Dipterocarpaceae was the most important family in both forest plots with FIV i at 20.4 % in the coastal and 21.5 % in the inland forest. The Shannon-Weiner Diversity Index (H’) was considered high in both forest plots with 3.4 (H’ max = 3.9) at the coastal forest and 3.5 (H’ max = 4.0) at the inland forest. Sorenson’s Community Similarity Coefficient (CCs) showed that tree species communities between the two forest plots had moderate similarity with CC = 0.5. The Shannon Evenness Index ( J ’) in the two forest plots was 0.89. The total above ground biomass at the coastal forest was 491 t/ha and at the inland forest it was 408 t/ha. From all the species recorded in this study, 11 species were listed as threatened species by IUCN Red Data Book, of which four were listed as endangered and critically endangered, six were listed as lower risk and one species was listed as vulnerable.
{"title":"Tree Species Composition, Diversity and Above Ground Biomass of Two Forest Types at Redang Island, Peninsula Malaysia","authors":"M. Khairil, M. Nashriyah, N. Norhayati, Shahril Amin, N. Fatihah","doi":"10.2004/WJST.V10I1.239","DOIUrl":"https://doi.org/10.2004/WJST.V10I1.239","url":null,"abstract":"A study was conducted to determine the tree species composition, diversity and above ground biomass at Redang Island, Terengganu. Two plots of 0.1 ha were established at the inland forest and coastal forest of the island. As the result, a total of 387 trees ≥ 5 diameters at breast height (DBH) were recorded. The coastal forest recorded 167 individuals representing 48 species from 37 genera and 26 families while the inland forest had 220 individuals representing 50 species from 43 genera and 25 families. Shorea glauca (Dipterocarpaceae) was the most important species at the coastal forest with a Species Importance Value Index ( SIV i ) of 10.5 % while Dipterocarpus costulatus (Dipterocarpaceae) was the most important species at the inland forest with 13.8 %. Dipterocarpaceae was the most important family in both forest plots with FIV i at 20.4 % in the coastal and 21.5 % in the inland forest. The Shannon-Weiner Diversity Index (H’) was considered high in both forest plots with 3.4 (H’ max = 3.9) at the coastal forest and 3.5 (H’ max = 4.0) at the inland forest. Sorenson’s Community Similarity Coefficient (CCs) showed that tree species communities between the two forest plots had moderate similarity with CC = 0.5. The Shannon Evenness Index ( J ’) in the two forest plots was 0.89. The total above ground biomass at the coastal forest was 491 t/ha and at the inland forest it was 408 t/ha. From all the species recorded in this study, 11 species were listed as threatened species by IUCN Red Data Book, of which four were listed as endangered and critically endangered, six were listed as lower risk and one species was listed as vulnerable.","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"10 1","pages":"77-90"},"PeriodicalIF":0.0,"publicationDate":"2012-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68182143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hamed Nekoubin, S. Hatefi, Susan Javahery, M. Sudagar
This study was carried out to evaluate the effect of synbiotic ( Biomin imbo ) on growth performance, survival rate and reproductive parameters of Angelfish ( Pterophyllum scalare ) via supplementation with Biomar. Four levels of Biomar experimental diets (54 % protein and 14 % lipid) were prepared by adding synbiotic (0.15, 0.5, 0.75, 1 g/Kg) at a basal diet (Biomar) and the Angelfish larvae in experimental treatments were fed four levels of synbiotic with 5 percent body weight (3 times a day). The larvae in the control treatment were fed without supplemented Biomar. The results showed that larvae fed on the synbiotic had significantly increased final body weight in comparison with the control treatment. After 90 days, 5 adult female and male Angelfish were divided from each treatment. The results showed that fecundity in experimental treatments increased in comparison with the control treatment. The synbiotic also had positive effects on hatching rate in comparison with those in the control treatment but, there were no significant differences (P > 0.05) among treatments. The synbiotic also had significant positive effects on the specific growth rate (SGR) and feed conversation efficiency (FCE) in comparison to those fed the control treatment, however treatment T3 was more than T4 (T3 > T4 > T2 > T1 > control treatment).
{"title":"Effects of Synbiotic (Biomin Imbo) on Growth Performance, Survival Rate, Reproductive Parameters of Angelfish (Pterophyllum scalare)","authors":"Hamed Nekoubin, S. Hatefi, Susan Javahery, M. Sudagar","doi":"10.2004/WJST.V9I4.384","DOIUrl":"https://doi.org/10.2004/WJST.V9I4.384","url":null,"abstract":"This study was carried out to evaluate the effect of synbiotic ( Biomin imbo ) on growth performance, survival rate and reproductive parameters of Angelfish ( Pterophyllum scalare ) via supplementation with Biomar. Four levels of Biomar experimental diets (54 % protein and 14 % lipid) were prepared by adding synbiotic (0.15, 0.5, 0.75, 1 g/Kg) at a basal diet (Biomar) and the Angelfish larvae in experimental treatments were fed four levels of synbiotic with 5 percent body weight (3 times a day). The larvae in the control treatment were fed without supplemented Biomar. The results showed that larvae fed on the synbiotic had significantly increased final body weight in comparison with the control treatment. After 90 days, 5 adult female and male Angelfish were divided from each treatment. The results showed that fecundity in experimental treatments increased in comparison with the control treatment. The synbiotic also had positive effects on hatching rate in comparison with those in the control treatment but, there were no significant differences (P > 0.05) among treatments. The synbiotic also had significant positive effects on the specific growth rate (SGR) and feed conversation efficiency (FCE) in comparison to those fed the control treatment, however treatment T3 was more than T4 (T3 > T4 > T2 > T1 > control treatment).","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"9 1","pages":"327-332"},"PeriodicalIF":0.0,"publicationDate":"2012-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68186795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Electrospinning is a popular technique to produce structures in the form of nanofibers. These nanofibers can be used for many applications such as filtration composites, insulator and energy storage. The technique is based on the electrostatic force that acts on the polymeric solution. However, during the electrospinning process the liquid jet shows unstable behavior. This problem causes the random formation of nanofibers. This article focuses on the mathematical models to describe the dynamics behavior of the fluid jet in the electrospinning process. There are a lot of different parameters in the model. Variation in these parameters results in a change in jet behaviors. This brief review is a summary of the authors’ recent work. The Reneker’s model and Wu’s model are used to describe the dynamics behavior of the jet used in electrospinning.
{"title":"Mathematical Models of Bead-Spring Jets during Electrospinning for Fabrication of Nanofibers","authors":"T. Dasri","doi":"10.2004/WJST.V9I4.449","DOIUrl":"https://doi.org/10.2004/WJST.V9I4.449","url":null,"abstract":"Electrospinning is a popular technique to produce structures in the form of nanofibers. These nanofibers can be used for many applications such as filtration composites, insulator and energy storage. The technique is based on the electrostatic force that acts on the polymeric solution. However, during the electrospinning process the liquid jet shows unstable behavior. This problem causes the random formation of nanofibers. This article focuses on the mathematical models to describe the dynamics behavior of the fluid jet in the electrospinning process. There are a lot of different parameters in the model. Variation in these parameters results in a change in jet behaviors. This brief review is a summary of the authors’ recent work. The Reneker’s model and Wu’s model are used to describe the dynamics behavior of the jet used in electrospinning.","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"9 1","pages":"287-296"},"PeriodicalIF":0.0,"publicationDate":"2012-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68186717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Sheri, Murali Gundagani, Maruthi Prasad Karanamu
The objective of this paper is to investigate the heat and mass transfer effects on an isothermal vertical oscillating plate. The dimensionless governing equations are solved using a finite element method. The velocity, temperature and concentration fields for different physical parameters like thermal Grashof number, mass Grashof number, prandtl number, Schmidt number, phase angle and time are shown graphically.
{"title":"Analysis of Heat and Mass Transfer Effects on an Isothermal Vertical Oscillating Plate","authors":"S. Sheri, Murali Gundagani, Maruthi Prasad Karanamu","doi":"10.2004/WJST.V9I4.451","DOIUrl":"https://doi.org/10.2004/WJST.V9I4.451","url":null,"abstract":"The objective of this paper is to investigate the heat and mass transfer effects on an isothermal vertical oscillating plate. The dimensionless governing equations are solved using a finite element method. The velocity, temperature and concentration fields for different physical parameters like thermal Grashof number, mass Grashof number, prandtl number, Schmidt number, phase angle and time are shown graphically.","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"9 1","pages":"407-415"},"PeriodicalIF":0.0,"publicationDate":"2012-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68186735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Piancastelli, L. Frizziero, Eugenio Morganti, E. Pezzuti
A significant issue in aircraft engines is quantifying residual life to overhaul. The algorithm described in this paper calculates with a good level of reliability the residual life of a petrol piston engine. The method was tested on small, latest-generation, naturally-aspirated aircraft and racing piston engines, and has been effective in several experiments. This method is implemented directly on the electronic control system of the engine with very few lines of C-code. The method can also be used in many industrial engines. This innovative method assumes that only two main factors (power level and wear) affect engine durability or time between overhauls. These two factors are considered as separate and combined with worst case criteria. The wear is assumed to follow a logarithmic law and a formula similar to the Miner’s law for material fatigue is used, making it possible to calculate the power-level curve with knowledge of only two points. The wear-curve is also related to elapsed engine cycles. The algorithm is very simple and can be implemented with just a few lines of software code accessing data collected from existing sensors. The system is currently used to evaluate actual residual life of racing engines.
{"title":"Method Evaluating the Durability of Aircraft Piston Engines","authors":"L. Piancastelli, L. Frizziero, Eugenio Morganti, E. Pezzuti","doi":"10.2004/WJST.V9I4.315","DOIUrl":"https://doi.org/10.2004/WJST.V9I4.315","url":null,"abstract":"A significant issue in aircraft engines is quantifying residual life to overhaul. The algorithm described in this paper calculates with a good level of reliability the residual life of a petrol piston engine. The method was tested on small, latest-generation, naturally-aspirated aircraft and racing piston engines, and has been effective in several experiments. This method is implemented directly on the electronic control system of the engine with very few lines of C-code. The method can also be used in many industrial engines. This innovative method assumes that only two main factors (power level and wear) affect engine durability or time between overhauls. These two factors are considered as separate and combined with worst case criteria. The wear is assumed to follow a logarithmic law and a formula similar to the Miner’s law for material fatigue is used, making it possible to calculate the power-level curve with knowledge of only two points. The wear-curve is also related to elapsed engine cycles. The algorithm is very simple and can be implemented with just a few lines of software code accessing data collected from existing sensors. The system is currently used to evaluate actual residual life of racing engines.","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"9 1","pages":"425-431"},"PeriodicalIF":0.0,"publicationDate":"2012-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68186702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tanh-Coth Method is applied to find solitary wave solutions of the Zoomeron equation which is of extreme importance in mathematical physics. The proposed scheme is fully compatible with the complexity of the problem and is highly efficient. Moreover, suggested combination is capable to handle nonlinear problems of versatile physical nature.
{"title":"Solitary Wave Solutions for Zoomeron Equation","authors":"Amna Irshad, S. Mohyud-Din","doi":"10.2004/WJST.V10I2.422","DOIUrl":"https://doi.org/10.2004/WJST.V10I2.422","url":null,"abstract":"Tanh-Coth Method is applied to find solitary wave solutions of the Zoomeron equation which is of extreme importance in mathematical physics. The proposed scheme is fully compatible with the complexity of the problem and is highly efficient. Moreover, suggested combination is capable to handle nonlinear problems of versatile physical nature.","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"66 1","pages":"201-208"},"PeriodicalIF":0.0,"publicationDate":"2012-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68182002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Surrogacy is a method in which a woman bears a child for another woman. The indications for treatment include absent uterus, recurrent miscarriage, and repeated failure of in vitro fertilization (IVF) and certain medical conditions. It also defines the process in which a woman gestates a fetus, gives birth to a child, and then relinquishes her parental rights to another couple. This third party relationship to the intimate process of producing children is not a contemporary concept and has been recorded in our history in several forms. In colonial America, children were sent to other childless families to learn trades or provide extra help to the family. More recent forms of surrogacy in the U.S. are adoption, fostering, and step-parenting. In this review, various techniques, law issues, and drawbacks of surrogacy are synchronically described and postulated.
{"title":"Genetic and Gestational Surrogacy: an Overview","authors":"Sambhu Mondal, A. Verma, Shiv K. Gupta, B. Kumar","doi":"10.2004/WJST.V9I3.279","DOIUrl":"https://doi.org/10.2004/WJST.V9I3.279","url":null,"abstract":"Surrogacy is a method in which a woman bears a child for another woman. The indications for treatment include absent uterus, recurrent miscarriage, and repeated failure of in vitro fertilization (IVF) and certain medical conditions. It also defines the process in which a woman gestates a fetus, gives birth to a child, and then relinquishes her parental rights to another couple. This third party relationship to the intimate process of producing children is not a contemporary concept and has been recorded in our history in several forms. In colonial America, children were sent to other childless families to learn trades or provide extra help to the family. More recent forms of surrogacy in the U.S. are adoption, fostering, and step-parenting. In this review, various techniques, law issues, and drawbacks of surrogacy are synchronically described and postulated.","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"9 1","pages":"189-193"},"PeriodicalIF":0.0,"publicationDate":"2012-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68186374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The studies on antibacterial activity of Bauhinia sirindhorniae extract, an indigenous plant of Nong Khai province, against Aeromonas hydrophila isolated hybrid catfish were assayed. Root, stem, leaves and flowers of B. sirindhorniae were extracted by acetone, ethanol 50 %, ethanol 95 % and methanol. In antibacterial screening performed by disc method was conducted. The results revealed that the highest activity against A. hydrophila , found in roots extract using acetone with an inhibition zone, was 20.33 ± 0.58 mm. The minimum inhibitory concentration (MIC) for B. sirindhorniae extracts were also determined by the broth dilution method. The lowest MIC value with high efficacy against A. hydrophila was 97.66 ppm which could be obtained from the root extract of B. sirindhorniae from acetone. The minimum bactericidal concentrations (MBC) of B. sirindhorniae extracts were also determined. The determination of MBC was not observed in any concentration of B. sirindhorniae extracts.
{"title":"Antibacterial Activity of Bauhinia sirindhorniae Extract Against Aeromonas hydrophila Isolated from Hybrid catfish","authors":"N. Nithikulworawong","doi":"10.2004/WJST.V9I3.312","DOIUrl":"https://doi.org/10.2004/WJST.V9I3.312","url":null,"abstract":"The studies on antibacterial activity of Bauhinia sirindhorniae extract, an indigenous plant of Nong Khai province, against Aeromonas hydrophila isolated hybrid catfish were assayed. Root, stem, leaves and flowers of B. sirindhorniae were extracted by acetone, ethanol 50 %, ethanol 95 % and methanol. In antibacterial screening performed by disc method was conducted. The results revealed that the highest activity against A. hydrophila , found in roots extract using acetone with an inhibition zone, was 20.33 ± 0.58 mm. The minimum inhibitory concentration (MIC) for B. sirindhorniae extracts were also determined by the broth dilution method. The lowest MIC value with high efficacy against A. hydrophila was 97.66 ppm which could be obtained from the root extract of B. sirindhorniae from acetone. The minimum bactericidal concentrations (MBC) of B. sirindhorniae extracts were also determined. The determination of MBC was not observed in any concentration of B. sirindhorniae extracts.","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"832 1","pages":"195-199"},"PeriodicalIF":0.0,"publicationDate":"2012-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68186464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Mashaii, M. Mosaddegh, H. Sarsangi, F. Rajabipour, Ahmad Ghorghi, A. Bitaraf, H. Mozaffari‐khosravi
Iran is the number one producer of cultured coldwater fish in Asia since 2005. Rainbow trout, (Oncorhynchus mykiss) is the most common and important fish produced by Iranian fisheries. There is not enough information about carcass composition of cultured fish in Iran. Rainbow trout muscle samples were collected from six fish farms of Yazd province during February 2008. Muscle samples were frozen at -30 ο C after being homogenized. Proximate composition of samples was measured. Saturated fatty acids including palmitic, stearic, myristic, lauric acids, also unsaturated fatty acids oleic and linoleic were extracted from muscle tissue of fish at different farms, using gas chromatograghy (GC). Other unsaturated fatty acids including α-linolenic acid, Eicosa Pentaenoic Acid (EPA) and Docosa Hexaenoic Acid (DHA) had low concentrations (up to 3 %) in samples. Vitamin E levels were 4.33 - 94.34 μg/100 g.
自2005年以来，伊朗是亚洲养殖冷水鱼的头号生产国。虹鳟鱼(Oncorhynchus mykiss)是伊朗渔业生产的最常见和最重要的鱼。伊朗养殖鱼类的胴体组成资料不足。2008年2月在亚兹德省的6个养鱼场采集了虹鳟鱼肌肉样本。匀浆后的肌肉样品在-30 ο C冷冻。测量了样品的近似组成。采用气相色谱法从不同养殖场的鱼类肌肉组织中提取饱和脂肪酸，包括棕榈酸、硬脂酸、肉豆酱酸、月桂酸，以及不饱和脂肪酸油酸和亚油酸。其他不饱和脂肪酸，包括α-亚麻酸、白杨五烯酸(EPA)和白杨六烯酸(DHA)在样品中的浓度较低(高达3%)。维生素E含量为4.33 ~ 94.34 μg/100 g。
{"title":"Proximate and Fatty Acid Composition in Muscle Tissues of Rainbow Trout (Oncorhynchus mykiss) Cultured in Yazd Province of Iran","authors":"N. Mashaii, M. Mosaddegh, H. Sarsangi, F. Rajabipour, Ahmad Ghorghi, A. Bitaraf, H. Mozaffari‐khosravi","doi":"10.2004/WJST.V9I4.276","DOIUrl":"https://doi.org/10.2004/WJST.V9I4.276","url":null,"abstract":"Iran is the number one producer of cultured coldwater fish in Asia since 2005. Rainbow trout, (Oncorhynchus mykiss) is the most common and important fish produced by Iranian fisheries. There is not enough information about carcass composition of cultured fish in Iran. Rainbow trout muscle samples were collected from six fish farms of Yazd province during February 2008. Muscle samples were frozen at -30 ο C after being homogenized. Proximate composition of samples was measured. Saturated fatty acids including palmitic, stearic, myristic, lauric acids, also unsaturated fatty acids oleic and linoleic were extracted from muscle tissue of fish at different farms, using gas chromatograghy (GC). Other unsaturated fatty acids including α-linolenic acid, Eicosa Pentaenoic Acid (EPA) and Docosa Hexaenoic Acid (DHA) had low concentrations (up to 3 %) in samples. Vitamin E levels were 4.33 - 94.34 μg/100 g.","PeriodicalId":38275,"journal":{"name":"Walailak Journal of Science and Technology","volume":"9 1","pages":"317-325"},"PeriodicalIF":0.0,"publicationDate":"2012-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68186559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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