Asia-Pacific Journal of Science and Technology最新文献_第4页

Growth performance and intestinal morphology of common lowland frog (Rana rugulosa) fed diets supplemented with lotus (Nelumbo nuc 饲粮中添加荷花对普通低地蛙生长性能和肠道形态的影响

Asia-Pacific Journal of Science and Technology Pub Date : 2016-07-15 DOI: 10.14456/KKURJ.2016.29

Pattamon Thummek, S. Aoki, P. Munglue

{"title":"Growth performance and intestinal morphology of common lowland frog (Rana rugulosa) fed diets supplemented with lotus (Nelumbo nuc","authors":"Pattamon Thummek, S. Aoki, P. Munglue","doi":"10.14456/KKURJ.2016.29","DOIUrl":"https://doi.org/10.14456/KKURJ.2016.29","url":null,"abstract":"The aims of this research were to study the effect of Nelumbo nucifera Gaertn. stamen extract (NNSE) as a natural feed additive on growth performance and intestinal morphology of common lowland frog (Rana rugulosa). Frogs with an average of 16.35±0.68 g were fed with diets containing 0, 1, 3 and 5% of NNSE for 11 weeks. The results showed that final weight, weight gain, average daily gain and specific growth rate of frogs fed the diets incorporated with NNSE were significantly higher than those of frogs fed the basal diet (P 0.05). Villi heights, villi widths, the thicknesses of villi, longitudinal muscularis and circular muscularis in the intestines of frogs fed the diets containing NNSE had significantly higher than frogs fed the control diet (P<0.05). Feeding behavior, feed acceptability and health of frogs in the experimental groups were similar to the control group, indicating that NNSE did not have any toxic effect on frog. The optimal concentration of NNSE observed in this investigation was 5%. Thus, our research supports the use of NNSE as natural feed additive in the diet to improve growth and intestinal morphology of frog.","PeriodicalId":8597,"journal":{"name":"Asia-Pacific Journal of Science and Technology","volume":"21 1","pages":"18-29"},"PeriodicalIF":0.0,"publicationDate":"2016-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66676374","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}

引用次数: 1

A novel alkaline serine protease from bacillus amyloliquefaciens strain S1-13 解淀粉芽孢杆菌S1-13的一种新型碱性丝氨酸蛋白酶

Asia-Pacific Journal of Science and Technology Pub Date : 2016-07-15 DOI: 10.14456/KKURJ.2016.18

Y. Yingchutrakul, S. Roytrakul, E. Chukeatirote, Teerawit Waratrujiwong

引用次数: 0

Effect of Nitrogen Source on Ethanol Production from Weeds by a Simultaneous Saccharification and Fermentation Process 氮源对杂草糖化发酵制乙醇的影响

Asia-Pacific Journal of Science and Technology Pub Date : 2016-07-15 DOI: 10.14456/KKURJ.2016.38

Sasi Mongkolchaiarunya, P. Vaithanomsat, S. Chuntranuluck

引用次数: 2

Blue technology-the water-energy interrelationship renewable energies and nutrient recovery 蓝色技术——水-能相互关系、可再生能源和养分回收

Asia-Pacific Journal of Science and Technology Pub Date : 2016-07-15 DOI: 10.14456/KKURJ.2016.21

N. Kathijotes

{"title":"Blue technology-the water-energy interrelationship renewable energies and nutrient recovery","authors":"N. Kathijotes","doi":"10.14456/KKURJ.2016.21","DOIUrl":"https://doi.org/10.14456/KKURJ.2016.21","url":null,"abstract":"Water resources are constantly under threat from pollution, overexploitation and urbanisation. The European Innovation Partnership on Water (EIP) has identified specific actions to meet the relevant needs which have been codified into 8 priority areas. Focussing on two of the five thematic priorities (water and waste water treatment, including recovery of resources; and water and energy integration, this paper amplifies Blue Economy models aiming to shift society from scarcity to abundance through these new and novel ways. Inland and coastal waters are looked upon as ‘water resources’ that can contribute to the production of sustainable energies. In water reuse, the energy contained in wastewater is also examined in order to contribute to the understanding of the water/energy relationship. Energy is needed for water cycle management; water is needed for energy production and water reuse can help to save both. Biogas production, being an important green energy issue is also examined under the scope of wastewater treatment. Significant energy savings and recovery of nutrients can be achieved on major components of an ‘efficient’ wastewater treatment plant by applying novel blue economy principles. Zones where energy efficiency can be improved, as well as phosphorous recovery is explained always under a holistic water cycle management. Marine based renewable energies are also outlined based on coastal blue potentials and future world energy needs-provided that conventional energy sources are approaching exhaustion. Other general quality issues in coastal environments are presented and examined within the framework of the blue economy principle and thus suggesting actual novel sustainable management techniques.","PeriodicalId":8597,"journal":{"name":"Asia-Pacific Journal of Science and Technology","volume":"21 1","pages":"102-109"},"PeriodicalIF":0.0,"publicationDate":"2016-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66676337","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}

引用次数: 3

Separation of polyphenol compounds and caffeine from green tea extract 绿茶提取物中多酚化合物和咖啡因的分离

Asia-Pacific Journal of Science and Technology Pub Date : 2016-07-15 DOI: 10.14456/kkurj.2016.16

S. Sampanvejsobha, S. Siriwattanayotin, N. Rungraeng, P. Wongsa

{"title":"Separation of polyphenol compounds and caffeine from green tea extract","authors":"S. Sampanvejsobha, S. Siriwattanayotin, N. Rungraeng, P. Wongsa","doi":"10.14456/kkurj.2016.16","DOIUrl":"https://doi.org/10.14456/kkurj.2016.16","url":null,"abstract":"The polyphenolic compounds in green tea extract i.e. tannins and polyphenols, especially catechins, attribute to organoleptic and heath promoting functions. For tea caffeine, although it is known to stimulate nervous system; however, overuse of caffeine may induce a number of detrimental effects including headaches and migraines. Therefore, this research is aimed at optimizing the separation of caffeine and the major tea polyphenols namely catechins from green tea extract using adsorption/desorption technique. In this study, Assam green tea extract was prepared by boiling 5%w/v tea leaves in 100 mL of acidified deionized water at 95°C for 10 mins. The pH of the tea-hot water mixture in the extractor was controlled at pH 4 using citric acid. This was done to minimize oxidative degradation of active ingredients. Total polyphenol content (TPC) of the fresh extract measured using a spectrophotometer was 8.8%w/v. Thereafter, the extract was evaporated until the final volume was 10 mL. Subsequently, the concentrate was separately flown in different resin columns i.e. polyamide 6, amberlite XAD-7, nylon 6/6 and polyamine at a constant flow rate of 2.7 mL/min. Water-ethanol mixtures (0 to 95%v/v of ethanol) were used as eluting agents in desorption process. It was found that, caffeine and catechins were clearly isolated from each other when the polyamide column was initially desorbed with water (to elute caffeine) followed by 50%v/v ethanol in water (to elute catechins). The recovery percentages of the isolation process for caffeine and individual catechins were 36.4% and in the rage of 28.5 to 98.7%, respectively. Therefore, the purified caffeine and catechins could be further used as ingredients in food, beverage and pharmaceutical industries.","PeriodicalId":8597,"journal":{"name":"Asia-Pacific Journal of Science and Technology","volume":"21 1","pages":"150-155"},"PeriodicalIF":0.0,"publicationDate":"2016-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66676177","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}

引用次数: 0

Evaluation of different pretreatment methods to prepare an inoculum for bio-hydrogen production from cassava starch wastewater 木薯淀粉废水制备生物制氢接种物的不同预处理方法的评价

Asia-Pacific Journal of Science and Technology Pub Date : 2016-07-15 DOI: 10.14456/KKURJ.2016.22

S. Sittijunda, Sakchai Pattra

引用次数: 4

The preliminary study of lipid production of Nostoc sp. from Bueng Boraphet, Nakhon Sawan Province 那空沙湾省Bueng Boraphet Nostoc sp.产脂的初步研究

Asia-Pacific Journal of Science and Technology Pub Date : 2016-07-15 DOI: 10.14456/KKURJ.2016.23

T. Theantana, Raenu Yucharoen

引用次数: 0

Vacuum impregnated rice as affected by moisture contents and rice varieties 真空浸渍水稻受水分含量和水稻品种的影响

Asia-Pacific Journal of Science and Technology Pub Date : 2016-07-15 DOI: 10.14456/KKURJ.2016.52

Chanettee Makmuang, A. Phianmongkhol, T. Wirjantoro

{"title":"Vacuum impregnated rice as affected by moisture contents and rice varieties","authors":"Chanettee Makmuang, A. Phianmongkhol, T. Wirjantoro","doi":"10.14456/KKURJ.2016.52","DOIUrl":"https://doi.org/10.14456/KKURJ.2016.52","url":null,"abstract":"Rice is an economical commodity for Thailand. Although it is common to directly consume the rice, its commercial value can be increased through processing, such as vacuum impregnation. Therefore, the aim of this study was to investigate the effect of moisture contents and rice types on the physicochemical properties of vacuum impregnated rice. Four different rice varieties, including white rice ( Sao Hai ), white glutinous rice ( Kiaw Ngu ), black rice ( Hom Nin ) and black glutinous rice ( Kum Doi Saket ), were cooked in an electric cooker at different water addition to produce cooked rice with moisture contents of approximately 50 or 60%. The cooked rice was then subjected to vacuum impregnation at 50 mbar for 10 min in an impregnation solution of saline solution at a ratio of 1:2 for rice and water, respectively, followed by another 10 min period in the solution as a relaxation time. Physicochemical analyses of the impregnated rice showed that different rice varieties and moisture contents of cooked rice significantly affected hardness, rice volumetric deformation (γ value), volume of rice occupied by impregnation solution (X value), real porosity (e r ), solid gain and water loss (p<0.05). The white glutinous rice with a moisture content of 50.71±0.30% significantly had the highest γ and X values of 1.00±0.64 m 3 /m 3 initial sample and 1.15±0.04 m 3 liquid/m 3 sample, respectively. This rice treatment also significantly possessed the lowest water loss (–94.97±3.06%), whereas the highest solid gain of 2.45±0.16% was determined in the white rice with a moisture content of 49.50±0.55%. For the e r value, the lowest value of this parameter (0.022±0.018%) was found in the black glutinous rice with a moisture content of 50.14±0.22%. Finding from this study clearly suggested rice varieties and moisture contents of cooked rice are important parameters in the application of vacuum impregnation.","PeriodicalId":8597,"journal":{"name":"Asia-Pacific Journal of Science and Technology","volume":"21 1","pages":"299-309"},"PeriodicalIF":0.0,"publicationDate":"2016-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66676608","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}

引用次数: 0

Production of fumaric acid from oil palm empty fruit bunch 从油棕空果束中提取富马酸

Asia-Pacific Journal of Science and Technology Pub Date : 2016-07-15 DOI: 10.14456/kkurj.2016.36

Panida U-thai, P. Vaithanomsat, Antika Boondaeng, Anfal Talek, S. Chuntranuluck

{"title":"Production of fumaric acid from oil palm empty fruit bunch","authors":"Panida U-thai, P. Vaithanomsat, Antika Boondaeng, Anfal Talek, S. Chuntranuluck","doi":"10.14456/kkurj.2016.36","DOIUrl":"https://doi.org/10.14456/kkurj.2016.36","url":null,"abstract":"Oil palm empty fruit bunch (EFB) , one of the most abundant agricultural residues in Thailand , is an attractive lignocellulosic material for value added agricultural products. They could be used as a raw material for cheap renewable feedstock to produce acids and many other value-added products. This research is to investigate the potential of EFB as a raw material for fumaric acid production through separate hydrolysis and fermentation (SHF) by the selected fungal isolate K20. Steam explosion was used in this study to pretreat the lignocellulosic material. A Cellic CTec2 enzyme (25 FPU/ml) was used to hydrolyze the pretreated material into glucose. Response surface methodology (RSM) based on central composite design (CCD) was applied to optimize the effect of the medium composition including solid loading, (NH 4 ) 2 SO 4 and Na 2 CO 3 on fumaric acid concentration. The optimized medium consisted of (g/L): solid loading 166.70, (NH 4 ) 2 SO 4 0.29 and Na 2 CO 3 3.07. The maximum predicted value of fumaric acid concentration of 5.18 g/L was obtained, which corresponded with the observed values of 5.30 g/L","PeriodicalId":8597,"journal":{"name":"Asia-Pacific Journal of Science and Technology","volume":"21 1","pages":"221-228"},"PeriodicalIF":0.0,"publicationDate":"2016-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66676712","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}

引用次数: 3

Isolation and production of polyhydroxybutyrate (PHB) from isolated strain bacillus sp. using crude glycerol as a carbon source 以粗甘油为碳源从分离的芽孢杆菌中分离制备聚羟基丁酸酯(PHB)

Asia-Pacific Journal of Science and Technology Pub Date : 2016-07-15 DOI: 10.14456/KKURJ.2016.44

P. Piwpan, Adisak Jaturapiree, P. Jaturapiree

引用次数: 1