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Delineation of Groundwater Potential Zones of Girei and Environs, Adamawa State, North Eastern Nigeria 尼日利亚东北部阿达马瓦州Girei及其周边地区地下水潜力区圈定
Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1097
Zainab Haliru Ali, Buba Apagu Ankidawa, Jackson M. Ishaku, Ahmed Buba Seli
Evaluation of groundwater resources of Girei and environs is necessary in order to develop appropriate water supply scheme to the community. Cases of borehole failures have been on increase in the area due to a lack of knowledge of the aquifer geometry. The study is aimed at delineating the groundwater potential zones of Girei and environs with the objectives of delineating the different aquifer systems, estimating the aquifer characteristics such as transmissivity and hydraulic conductivity using the Dar Zarrouk parameter, determining groundwater flow direction, and identifying the recharged and discharged areas. Geological investigation indicates that the area underlain by Bima sandstone. Thirty profiles of Vertical Electrical Sounding using Schlunberger array method with the aid of ABEM signal averaging system (SAS 1000) was used to determine aquifer types and groundwater potential zones. Correlation between borehole lithological section and geoelectric section within the study area revealed a confineded aquifer type. The aquifer characteristics indicate that the transverse resistance ranged between 29.796 to 238000 ?m2, longitudinal conductance ranged between 0.0148 ?-1 to 9.34 ?-1, hydraulic conductivity values range from 0.0014 to 5.865 m/s with an average value of 0.0355 m/s. Transmissivity values obtained from the various layers range from 237.6 m2/day to 6324 m2/day. Aquifer rating based on transmissivity values reveals that the aquifers in the study area have moderate to high potential.
为了制定适当的社区供水方案,有必要对吉雷及其周边地区的地下水资源进行评价。由于缺乏对含水层几何形状的了解,该地区的钻孔失败案例有所增加。该研究旨在圈定吉雷及其周边地区的地下水潜力带,目的是圈定不同的含水层系统,利用Dar Zarrouk参数估算含水层特征,如透水性和导电性,确定地下水流动方向,并确定补给和排放区域。地质调查表明,该地区下部为毕玛砂岩。利用30条Schlunberger阵列垂直电测深剖面,借助于ABEM信号平均系统(SAS 1000),确定了含水层类型和地下水潜力带。研究区内钻孔岩性剖面与地电剖面对比显示为封闭含水层类型。含水层特征表明:横向阻力为29.796 ~ 238000 μ m2,纵向电导为0.0148 μ m -1 ~ 9.34 μ m -1,水力电导值为0.0014 ~ 5.865 μ m/s,平均值为0.0355 μ m/s。不同层的透射率值从237.6 m2/天到6324 m2/天不等。基于透光率值的含水层等级表明研究区含水层具有中高潜力。
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引用次数: 0
The differences of farm financial performance in innovation adoption in beef cattle farming: A study in Peninsular Malaysia 肉牛养殖创新采用对农场财务绩效的影响:马来西亚半岛的研究
Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1079
F. A. Abdullah, Mohd Saifoul Zamzuri Noor, Syamsuriana Sidek
Beef cattle farming has become a vital sub-sector in the agriculture industry in supplying protein for the populations. The self-sufficiency ratio (SSR) of beef is not encouraging, and the import value is kept increasing for many years. Meanwhile, innovation adoption in beef cattle farming is believed to improve beef production if used correctly. However, inefficient financial management has led to improper farming practices. This study aims to identify the farm financial difference in adopting such innovations. This study involves 233 beef cattle farmers from Johor, Selangor, Kedah and Kelantan using stratified and simple random sampling. It is found that integration and silage show more significant profit changes with more than 60%, while artificial insemination and vaccination show 33% and 42% profit changes, respectively. Hence, regular meetings conducted by the extension agents are essential to ensure that adopting innovation is successful besides good cooperation among all stakeholders, including the farmers, government agencies, farmers' associations and private sectors.
肉牛养殖已成为农业工业中为人口提供蛋白质的重要分部门。牛肉自给率(SSR)不容乐观,进口额连续多年保持增长。同时,在肉牛养殖中采用创新,如果使用得当,相信可以提高牛肉产量。然而,低效的财务管理导致了不当的耕作方式。本研究旨在确定采用此类创新的农场财务差异。本研究以柔佛州、雪兰莪州、吉打州和吉兰丹州的233名肉牛养殖户为研究对象,采用分层和简单随机抽样。研究发现,整合和青贮的利润变化更为显著,超过60%,而人工授精和疫苗接种的利润变化分别为33%和42%。因此,除了所有利益相关者(包括农民、政府机构、农民协会和私营部门)之间的良好合作外,推广机构定期召开会议对于确保成功采用创新至关重要。
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引用次数: 0
A Note on Diversity of Aquatic Insects in Rivers of Royal Belum State Park, Perak 霹雳州皇家贝伦州立公园河流中水生昆虫的多样性
Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1099
Ahmad Mustaqim Rahim, Suhaila Ab Hamid
Royal Belum State Park is one of the oldest, protected and pristine land masses that joins hundreds of small tributaries that feed Lake Temenggor. A scientific expedition was conducted, and the diversity of aquatic insects was studied. Five rivers namely Sungai Ta Ng, Sungai Papan, Sungai Gen, Sungai Ruok and Sungai Rambutan were chosen. A kick-sampling technique was deployed to collect the aquatic insect larvae. The study recorded a total of 42 families and 61 genera of aquatic insects which Sungai Papan has the largest number of taxa recorded (18 families, 26 genera). The number of intolerant taxa (Ephemeroptera, Plecoptera, Trichoptera; EPT) in Sungai Papan was substantial (15 genera). Odonata was discovered to be the most diverse order (13 genera), followed by Ephemeroptera (10 genera) and Trichoptera (10 genera). The findings provided a concise richness of aquatic insects, which might serve as a good tool for evaluating the conservation needs of the area.
皇家贝伦州立公园是最古老的、受保护的、原始的土地之一,它与数百条小支流相连,流入特芒格尔湖。进行了一次科学考察,对水生昆虫的多样性进行了研究。5条河流分别是双溪达Ng河、双溪Papan河、双溪根河、双溪若克河和双溪红毛丹河。采用踢样法采集水生昆虫幼虫。本研究共记录到水生昆虫42科61属,其中双溪坝上有记录的类群最多(18科26属)。不耐虫类群数(蜉蝣目、翼翅目、毛翅目;Sungai Papan中有大量的EPT(15属)。其中,蛇翅目昆虫种类最多(13属),其次是蜉蝣目(10属)和毛翅目(10属)。研究结果提供了一个简明的水生昆虫丰富度,可作为评估该地区保护需求的良好工具。
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引用次数: 0
Coastal protection strategies in sustainable landscape design at Kelanang Beach, Selangor 雪兰莪州 Kelanang 海滩可持续景观设计中的海岸保护战略
Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1088
Masbiha Mat Isa, Farah Intan Liyana Mohamad Sukri, K. N. Tahar, Amal Najihah Muhamad Nor
Natural attractions and distinctive geographical settings make the coastal environment a promising opportunity for economic and social development. However, coastal areas are susceptible to environmental change, as the recent event shows that sea level rise has damaged Kelanang Beach. Controlling and minimizing the damage caused by sea level rise in the coastal zone is important for the area's benefit and long-term survival. Coastal protection strategies are essential to the survival of coastal ecosystems and the communities that rely on them. This study proposes coastal protection strategies in sustainable landscape design for Kelanang Beach, Selangor. The study entails the collection of primary data through site observation, in addition to the collection of secondary data which both compiled in the stage of site inventory, analysis, and map synthesis. The proposed design focuses on three main areas: the Kelanang Beach area, the glamping site area, and the mangrove trail area. The aesthetic value and practicality of these areas are highlighted through the design process including a zoning diagram, functional diagram, spatial diagram, design idea plan, and master plan proposal. Coastal protection strategies suggested in the master plan proposal include the integration of hard and soft strategies such as breakwater, planting buffer, and mangrove replanting. The design emphasized vegetation richness to stabilize the beach embankment and maintain the coastal line in the near future. This master plan idea is one of the landscape planning mechanisms to develop coastal areas while strengthening positive symbiotic relationships between local residents, tourists, and the natural environment.
自然景点和独特的地理环境使沿海环境成为经济和社会发展的大好机会。然而,沿海地区很容易受到环境变化的影响,最近的事件表明,海平面上升已经破坏了基拉南海滩。控制并尽量减少海平面上升对沿海地区造成的破坏,对该地区的利益和长期生存非常重要。海岸保护战略对沿海生态系统和依赖这些生态系统的社区的生存至关重要。本研究提出了雪兰莪州吉兰南海滩可持续景观设计中的海岸保护战略。这项研究需要通过现场观察收集原始数据,此外还需要收集二手数据,并在现场清点、分析和地图综合阶段对这些数据进行汇编。拟议的设计重点关注三个主要区域:吉拉南海滩区域、露营地区域和红树林小径区域。通过分区图、功能图、空间图、设计理念计划和总体规划建议等设计过程,突出了这些区域的美学价值和实用性。总体规划建议中提出的海岸保护策略包括防波堤、种植缓冲区和红树林补种等软硬结合的策略。设计强调植被的丰富性,以稳定海滩堤坝,并在不久的将来保持海岸线。这一总体规划构想是景观规划机制之一,旨在开发沿海地区,同时加强当地居民、游客和自然环境之间的积极共生关系。
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引用次数: 0
Torrefaction on agricultural residues empty fruit bunch: Effect of torrefaction processing factors on thermal properties of torrefied empty fruit bunch biochar 农业废弃物空果串的焙烧:焙烧工艺因素对焙烧空果串生物炭热性能的影响
Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1087
M. M. Mat Rasat, M. F. Mohd Amin, R. Wahab, Muhammad Iqbal Ahmad, An’Amt Mohamed Noor, A. A. Mohd Yunus, N. Jemali, Nur Kyairatul Syafinie Abdul Majid
Thermal properties of torrefied empty fruit bunch biochar were investigated in this study as an alternative to be a renewable energy material for future. Holding temperature range between 200 to 300°C and residence time for 30 to 90 minutes were applied as the factors for the torrefaction process. This study observed the thermal properties of torrefied empty fruit bunch biochar by using thermogravimetric analysis (TGA) to study the thermal decomposition before and after torrefaction process. Thermogravimetric analysis was used in identifying those properties, which is dividing into three stages of dehydration, devolatilizations and decomposition of the torrefied biochar. During the dehydration, the moisture content was removed, meanwhile during the second stage (devolatilizations), the volatile matter was removed along with the removal of hemicellulose, cellulose, and lignin, while on the third stage shows the decompositions of the torrefied biochar to completely degrade.
研究了碳化空果束生物炭的热性能,作为未来可再生能源的替代材料。保温温度为200 ~ 300℃,停留时间为30 ~ 90分钟,是影响焙烧过程的因素。本研究采用热重分析法(TGA)对碳化空果束生物炭热解前后的热分解过程进行了热性质观察。通过热重分析,将热解生物炭分为脱水、脱挥发和分解三个阶段。在脱水过程中除去水分,在第二阶段(脱挥发)中除去挥发分,同时除去半纤维素、纤维素和木质素,而在第三阶段,热解生物炭进行分解,完全降解。
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引用次数: 0
Preliminary study on phenotype and genotype of antibiotic resistance in Salmonella enterica subsp. enterica serotype Typhimurium Isolated from Chicken Samples in Malaysia 肠沙门氏菌亚群耐药表型和基因型的初步研究。马来西亚鸡样本中分离出肠炎血清型鼠伤寒杆菌
Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1095
Roseliza, R., Dhia Mardia, E., Siti Nor Hanani, R., Nafizah, M., Khoo, E.
Salmonellosis is a significant public health concern around the world. The issue of antibiotic resistance, particularly in non-typhoidal Salmonella (NTS), is a global threat to human and animal health. Thirty-five Salmonella enterica subsp. enterica serotype Typhimurium (S. Typhimurium) isolated from various chicken samples were tested for antimicrobial-resistant profiling using the disc diffusion method. The strains were further examined for the presence of the resistance genes by using polymerase chain reaction (PCR) according to published protocols. Phenotype resistance profiling revealed that 22.9% (8 out of 35) isolates showed resistance to five antibiotics used in this study. All the penta-resistant isolates carried the blaTEM, floR, strA, and tetA gene which encoded for ampicillin, chloramphenicol, streptomycin, and tetracycline resistance. Only one isolate (1 out of 35) was found to contain the sulfonamides resistance, sulA gene. Nine isolates were found susceptible to all antibiotics tested and do not harbor any of the resistant associated genes. These findings provide evidence that the presence of resistance genes contributes to the phenotypic resistance profile, and thus could give rise to the emergence of the drug-resistant strain of Salmonella.
沙门氏菌病是世界各地的一个重大公共卫生问题。抗生素耐药性问题,特别是在非伤寒沙门氏菌(NTS)中,是对人类和动物健康的全球性威胁。35种肠道沙门氏菌亚种。采用圆盘扩散法对从不同鸡肉中分离的肠炎血清型鼠伤寒沙门氏菌(S. Typhimurium)进行了耐药性分析。采用聚合酶链反应(PCR)法检测菌株是否存在耐药基因。表型耐药分析显示,22.9%(35株中有8株)分离株对本研究中使用的5种抗生素具有耐药性。所有的五耐药菌株都携带有bleta、floR、strA和tetA基因,这些基因编码氨苄西林、氯霉素、链霉素和四环素耐药。35株菌株中只有1株(1 / 35)含有sulA基因。发现9株菌株对所有测试的抗生素都敏感,并且不携带任何耐药相关基因。这些发现提供了证据,证明耐药基因的存在有助于表型耐药谱,因此可能导致耐药沙门氏菌菌株的出现。
{"title":"Preliminary study on phenotype and genotype of antibiotic resistance in Salmonella enterica subsp. enterica serotype Typhimurium Isolated from Chicken Samples in Malaysia","authors":"Roseliza, R., Dhia Mardia, E., Siti Nor Hanani, R., Nafizah, M., Khoo, E.","doi":"10.47253/jtrss.v11i1.1095","DOIUrl":"https://doi.org/10.47253/jtrss.v11i1.1095","url":null,"abstract":"Salmonellosis is a significant public health concern around the world. The issue of antibiotic resistance, particularly in non-typhoidal Salmonella (NTS), is a global threat to human and animal health. Thirty-five Salmonella enterica subsp. enterica serotype Typhimurium (S. Typhimurium) isolated from various chicken samples were tested for antimicrobial-resistant profiling using the disc diffusion method. The strains were further examined for the presence of the resistance genes by using polymerase chain reaction (PCR) according to published protocols. Phenotype resistance profiling revealed that 22.9% (8 out of 35) isolates showed resistance to five antibiotics used in this study. All the penta-resistant isolates carried the blaTEM, floR, strA, and tetA gene which encoded for ampicillin, chloramphenicol, streptomycin, and tetracycline resistance. Only one isolate (1 out of 35) was found to contain the sulfonamides resistance, sulA gene. Nine isolates were found susceptible to all antibiotics tested and do not harbor any of the resistant associated genes. These findings provide evidence that the presence of resistance genes contributes to the phenotypic resistance profile, and thus could give rise to the emergence of the drug-resistant strain of Salmonella.","PeriodicalId":17457,"journal":{"name":"Journal of Tropical Resources and Sustainable Science (JTRSS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91518542","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
Congo red dye removal from aqueous solution by encapsulated eggshell membrane using central composite design 中心复合设计包封蛋壳膜去除水中刚果红染料
Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1081
S. R. Hassan, Siew Khai Siong, Siti Roshayu, Hassan
Eggshell is solid wastes produced from the food industry. Commonly, eggshell and its membrane used to treat water pollution such as heavy metal removal and also dye removal. Thus, on the treatment process, it’s was having the material handling problem, which was needed filtration method to remove out the adsorbent from the solution, and it was not efficient when commercializing in the wastewater treatment plant. Therefore, this study was using alcohol-sodium alginate (PVA/SA) to encapsulate the eggshell membrane, and this encapsulation method also would be able to enhance the performance of raw material on the dye adsorption. In this study, the eggshell membrane (ESM) are prepared in bead form, and the optimization of the bead are performed by the removal of congo red dye at several parameters such as pH, initial dye concentration, contact time, and dosage of ESM. The central composite design was selected to optimize the adsorption process by generating 30 runs of the experiment using software Design Expert® version 11. The Fourier Transforms Infrared Spectroscopy (FTIR) analysis and Brunauer-Emmett-Teller (BET) analysis are used to characterize the ESM bead. There was found out that main functional group on ESM bead contribute on adsorption process were carbonyl group, hydroxyl group and ESM bead also having the 42.74 nm of pore size. The optimize point for each parameter was 12.63mg/L of initial dye concentration, 6.12 g of ESM dosage, pH 2.19 and 12.83 min of contact time and the optimum congo red dye removal efficiency was 98.86 %.
蛋壳是食品工业产生的固体废物。通常,蛋壳及其膜用于处理水污染,如重金属去除和染料去除。因此,在处理过程中存在物料处理问题,需要过滤法将吸附剂从溶液中去除,在污水处理厂商业化时效率不高。因此,本研究采用乙醇-海藻酸钠(PVA/SA)对蛋壳膜进行包封,这种包封方法也可以提高原料对染料的吸附性能。在本研究中,以珠状形式制备蛋壳膜(ESM),并在pH、初始染料浓度、接触时间和ESM用量等参数下去除刚果红染料,对珠状膜进行优化。通过使用design Expert®version 11软件进行30次实验,选择中心复合设计来优化吸附过程。采用傅里叶变换红外光谱(FTIR)分析和布鲁诺尔-埃米特-泰勒(BET)分析对ESM头进行了表征。结果表明,对吸附过程起作用的主要官能团为羰基、羟基和孔径为42.74 nm的ESM珠。各参数的最优值为初始染料浓度12.63mg/L、ESM用量6.12 g、pH为2.19、接触时间12.83 min,最优刚果红去除率为98.86%。
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引用次数: 0
The effects of magnetic and radiometric responses on hydrothermal zones and its implication in minerals characterization over part of Nasarawa, North Central Nigeria 尼日利亚中北部纳萨拉瓦部分地区热液带的磁和辐射响应及其在矿物表征中的意义
Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1093
Abdul Naeem, John Florence Oluwabukola, Ologe Oluwatoyin
Airborne magnetic and radiometric data set over part of Nasarawa, North central Nigeria have been enhanced and interpreted qualitatively. Attributes maps (first and second vertical derivative; and analytic signal maps) from the total magnetic intensity map (TMI) were used to delineate near-surface structures hosting sedimentary rocks forming minerals and differentiate regions based on amplitude responses. The structure trends NE-SW, NW-SE, E-W and N-S directions and the area is predominantly underlain by basement and sedimentary outcrops in the northeastern/western, central portion and southern parts respectively. The total cout map showed the low, moderate and high levels ranged from 6.40 to 14.70 ?R/h, 13.31 to 16.66 ?R/h and 18.02 to 41.23 ?R/h respectively. The Potassium concentration revealed the lowest concentration level (0.02-0.0.16%), moderate level (0.17-0.47%) and highest concentration of (18–27%). The lowest concentration level in the eTh map is related to siltstones and sandstones (Ansh), shale and mudstones (Nsh) and sandstone. The highest level reaches 31.35 ppm in volcanics rocks. The equivalent Uranium concentration map (eU) indicates that the high level of uranium concentration is associated with the black shales, siltstones and sandstones (Ansh) while shale and mudstones (Nsh), sandstones, shale and sandy clay (LaSS), sandstones (Ess), shale and limestones (Esh) and alluvium deposition has the lowest one. The potassium thorium ratio map shows zones characterized by the high K/eTh ratio values that are strong indicators of hydrothermal alteration. From the K/eTh ratio map, it can be observed that the areas affected by the hydrothermal process are featured in pink colour and have a high value of 0.37 in the K/eTh ratio which is an indication of gold mineralisation.
尼日利亚中北部Nasarawa部分地区的航空磁和辐射测量数据集已得到增强和定性解释。属性映射(第一和第二垂直导数;利用总磁强图(TMI)和解析信号图(解析信号图)来圈定含有沉积岩形成矿物的近地表构造,并根据振幅响应来划分区域。构造走向NE-SW、NW-SE、E-W和N-S方向,以基底和沉积露头为主,分别位于东北/西部、中部和南部。总计数图显示低、中、高水平分别为6.40 ~ 14.70、13.31 ~ 16.66和18.02 ~ 41.23 R/h。钾离子浓度依次为最低(0.02 ~ 0.0.16%)、中等(0.17 ~ 0.47%)和最高(18 ~ 27%)。eTh图中最低浓度与粉砂岩(Ansh)、页岩泥岩(Nsh)和砂岩有关。在火山岩中,最高水平达到了31.35 ppm。铀当量浓度图(eU)表明,黑色页岩、粉砂岩和砂岩(Ansh)的铀浓度较高,而页岩和泥岩(Nsh)、砂岩、页岩和砂质粘土(LaSS)、砂岩(Ess)、页岩和灰岩(Esh)和冲积层沉积的铀浓度最低。钾钍比图显示了高K/eTh比值的区域,这是热液蚀变的强烈指示。从K/eTh比值图中可以观察到,受热液作用影响的区域呈粉红色,K/eTh比值高达0.37,是金矿化的标志。
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引用次数: 0
Notes on Fenbendazole resistance of Boer goats in a farm in Setiu, Terengganu 关于丁加奴省塞提乌农场波尔山羊苯菌灵抗药性的说明
Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1090
Nur Nadirah Abdul Halim, Ahmad Syazni Kamarudin
Gastrointestinal parasitic infection is a serious threat to small ruminant industry. The control of helminth infection in goat are heavily relied on anthelmintic drugs. However, anthelmintic resistance has emerged as a big threat to the farmers and ruminant industry. Anthelmintic resistance against commonly used anthelmintic; Fenbendazole, was evaluated by using Faecal Egg Count Reduction Test (FECRT) of gastrointestinal (GI) parasites in a farm located in Setiu, Terengganu. GI parasites screening were carried out and a total of 28 animals with high parasites infection (EPG > 1000) were selected and divided into two groups (n= 14, Control vs Treatment). The Treatment group were administered with Fenbendazole (0.1ml/kg body weight) while Control group were leave untreated. Mean percentage reduction of FEC (95% upper and lower confidence limits) for the Treatment group are 32.75 (100 and -83) indicating resistant towards Fenbendazole treatment. The farm is recommended to use and alternate another group of anthelminthic drugs to treat their animals.
胃肠道寄生虫感染是对小型反刍动物产业的严重威胁。山羊蠕虫感染的控制主要依靠抗蠕虫药物。然而,抗寄生虫药物的抗药性已经成为农民和反刍动物业的一大威胁。在登嘉楼省塞提乌市的一个农场中,通过粪便卵数还原试验(FECRT)对胃肠道寄生虫(GI)进行了评估,结果表明对常用驱虫药苯苯咪唑(Fenbendazole)产生了抗药性。进行了胃肠道寄生虫筛查,共挑选了 28 只寄生虫感染率较高(EPG > 1000)的动物,并将其分为两组(n= 14,对照组与治疗组)。治疗组使用苯醚甲环唑(0.1 毫升/千克体重),而对照组则不使用苯醚甲环唑。治疗组的 FEC 平均减少百分比(95% 置信上限和下限)为 32.75(100 和 -83),表明对芬苯达唑治疗产生抗药性。建议该农场交替使用另一类抗蠕虫药物治疗动物。
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引用次数: 0
Physicochemical, antioxidative and sensory properties of pre-treated sliced pear cultivar during frozen storage 冷冻处理梨切片的理化、抗氧化和感官特性
Pub Date : 2022-12-30 DOI: 10.47253/jtrss.v10i2.1005
Mursyida Mohd Nazri, Leony Tham Yew Seng Yew Seng, Nurhanan Abdul Rahman
Pear is a typical fruit of temperate zones with high nutritive values and organoleptic properties, but when this fresh fruit being harvested, it will undergo chemical changes which can cause spoilage and product deterioration. Freezing could be as a preservative method to maintain quality attributes (colour, texture) of fresh produce that change over time. The purpose of this study is to determine ascorbic acid content and antioxidant activity of frozen fruit treated with osmotic solution. Pears were pre-treated with blanching, osmotic and both blanching and osmotic solution prior to freezing. Two varieties of pear fruit which are Asian pear and Packham pear were analyzed for physicochemical (colour and texture), antioxidative properties (ascorbic acid content, antioxidant activity and total phenolic content) and sensory acceptability. The pears were subjected to different pre-treatments prior to freezing such as blanching and osmotic solution during storage. The results showed that colour attributes of frozen pears were significantly affected by treatment which in contrast to texture properties of frozen pears during storage. Ascorbic acid content of frozen Packham pear was recorded the highest (6.38 ± 0.96 mg/100 g) after treated in osmotic solution compared to frozen Asian pear, the highest (4.62 ± 1.15 mg/100 g) was found in blanching treatment prior to storage, both tested after day 1 of storage. When treated in blanching treatment, the antioxidant activity of frozen Packham pear using DPPH assay exhibited (84.61 ± 0.69 %) contains high scavenging activity on day 1, while for Asian pear (67.63 ± 2.37 %) in blanching treatment on day 3. Using seven-point hedonic scale, sensory acceptability shows that frozen Asian pear treated in osmotic solution was highly rated among consumers with overall acceptance of 5.80 ± 0.85. Thus, combination of pre-treatment which were osmotic and blanching and freezing helps to retain the quality of frozen pears during period of storage.
梨是一种典型的温带水果,具有很高的营养价值和感官特性,但这种新鲜水果在收获时会发生化学变化,从而导致腐败和产品变质。冷冻可以作为一种保存方法来保持新鲜农产品随时间变化的质量属性(颜色、质地)。本研究的目的是测定经渗透溶液处理的冷冻水果的抗坏血酸含量和抗氧化活性。在冷冻前用焯水、渗透液和焯水和渗透液对梨进行预处理。对亚洲梨和帕克汉梨两个品种的果实进行了理化(颜色和质地)、抗氧化性能(抗坏血酸含量、抗氧化活性和总酚含量)和感官可接受性分析。在贮藏过程中,对梨进行了不同的冷冻前处理,如焯水和渗透溶液。结果表明,处理对冻梨贮藏期间的颜色属性有显著影响,而对质地属性有显著影响。冻梨的抗坏血酸含量经渗透处理后最高(6.38±0.96 mg/100 g),贮藏前焯水处理最高(4.62±1.15 mg/100 g),均在贮藏第1 d后测定。经DPPH测定,经焯水处理的冻梨第1天具有较高的抗氧化活性(84.61±0.69%),而经焯水处理的亚洲梨第3天具有较高的抗氧化活性(67.63±2.37%)。感官接受度采用七分制,消费者对渗透溶液处理的冷冻亚洲梨的总体接受度为5.80±0.85,评价较高。因此,采用渗透、焯水和冷冻相结合的预处理方法,可以有效地保持冻梨在贮藏期间的品质。
{"title":"Physicochemical, antioxidative and sensory properties of pre-treated sliced pear cultivar during frozen storage","authors":"Mursyida Mohd Nazri, Leony Tham Yew Seng Yew Seng, Nurhanan Abdul Rahman","doi":"10.47253/jtrss.v10i2.1005","DOIUrl":"https://doi.org/10.47253/jtrss.v10i2.1005","url":null,"abstract":"Pear is a typical fruit of temperate zones with high nutritive values and organoleptic properties, but when this fresh fruit being harvested, it will undergo chemical changes which can cause spoilage and product deterioration. Freezing could be as a preservative method to maintain quality attributes (colour, texture) of fresh produce that change over time. The purpose of this study is to determine ascorbic acid content and antioxidant activity of frozen fruit treated with osmotic solution. Pears were pre-treated with blanching, osmotic and both blanching and osmotic solution prior to freezing. Two varieties of pear fruit which are Asian pear and Packham pear were analyzed for physicochemical (colour and texture), antioxidative properties (ascorbic acid content, antioxidant activity and total phenolic content) and sensory acceptability. The pears were subjected to different pre-treatments prior to freezing such as blanching and osmotic solution during storage. The results showed that colour attributes of frozen pears were significantly affected by treatment which in contrast to texture properties of frozen pears during storage. Ascorbic acid content of frozen Packham pear was recorded the highest (6.38 ± 0.96 mg/100 g) after treated in osmotic solution compared to frozen Asian pear, the highest (4.62 ± 1.15 mg/100 g) was found in blanching treatment prior to storage, both tested after day 1 of storage. When treated in blanching treatment, the antioxidant activity of frozen Packham pear using DPPH assay exhibited (84.61 ± 0.69 %) contains high scavenging activity on day 1, while for Asian pear (67.63 ± 2.37 %) in blanching treatment on day 3. Using seven-point hedonic scale, sensory acceptability shows that frozen Asian pear treated in osmotic solution was highly rated among consumers with overall acceptance of 5.80 ± 0.85. Thus, combination of pre-treatment which were osmotic and blanching and freezing helps to retain the quality of frozen pears during period of storage.","PeriodicalId":17457,"journal":{"name":"Journal of Tropical Resources and Sustainable Science (JTRSS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82808791","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
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Journal of Tropical Resources and Sustainable Science (JTRSS)
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