Journal of Tropical Resources and Sustainable Science (JTRSS)最新文献

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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
Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1097
Zainab Haliru Ali, Buba Apagu Ankidawa, Jackson M. Ishaku, Ahmed Buba Seli
{"title":"Delineation of Groundwater Potential Zones of Girei and Environs, Adamawa State, North Eastern Nigeria","authors":"Zainab Haliru Ali, Buba Apagu Ankidawa, Jackson M. Ishaku, Ahmed Buba Seli","doi":"10.47253/jtrss.v11i1.1097","DOIUrl":"https://doi.org/10.47253/jtrss.v11i1.1097","url":null,"abstract":"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.","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":"83359302","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
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
Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1079
F. A. Abdullah, Mohd Saifoul Zamzuri Noor, Syamsuriana Sidek
{"title":"The differences of farm financial performance in innovation adoption in beef cattle farming: A study in Peninsular Malaysia","authors":"F. A. Abdullah, Mohd Saifoul Zamzuri Noor, Syamsuriana Sidek","doi":"10.47253/jtrss.v11i1.1079","DOIUrl":"https://doi.org/10.47253/jtrss.v11i1.1079","url":null,"abstract":"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.","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":"82092116","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
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
Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1099
Ahmad Mustaqim Rahim, Suhaila Ab Hamid
{"title":"A Note on Diversity of Aquatic Insects in Rivers of Royal Belum State Park, Perak","authors":"Ahmad Mustaqim Rahim, Suhaila Ab Hamid","doi":"10.47253/jtrss.v11i1.1099","DOIUrl":"https://doi.org/10.47253/jtrss.v11i1.1099","url":null,"abstract":"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.","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":"76398656","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
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
Journal of Tropical Resources and Sustainable Science (JTRSS) 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
{"title":"Coastal protection strategies in sustainable landscape design at Kelanang Beach, Selangor","authors":"Masbiha Mat Isa, Farah Intan Liyana Mohamad Sukri, K. N. Tahar, Amal Najihah Muhamad Nor","doi":"10.47253/jtrss.v11i1.1088","DOIUrl":"https://doi.org/10.47253/jtrss.v11i1.1088","url":null,"abstract":"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.","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":"139366342","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
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
Journal of Tropical Resources and Sustainable Science (JTRSS) 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
{"title":"Torrefaction on agricultural residues empty fruit bunch: Effect of torrefaction processing factors on thermal properties of torrefied empty fruit bunch biochar","authors":"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","doi":"10.47253/jtrss.v11i1.1087","DOIUrl":"https://doi.org/10.47253/jtrss.v11i1.1087","url":null,"abstract":"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.","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":"75085100","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
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
Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1095
Roseliza, R., Dhia Mardia, E., Siti Nor Hanani, R., Nafizah, M., Khoo, E.
{"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
Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1081
S. R. Hassan, Siew Khai Siong, Siti Roshayu, Hassan
{"title":"Congo red dye removal from aqueous solution by encapsulated eggshell membrane using central composite design","authors":"S. R. Hassan, Siew Khai Siong, Siti Roshayu, Hassan","doi":"10.47253/jtrss.v11i1.1081","DOIUrl":"https://doi.org/10.47253/jtrss.v11i1.1081","url":null,"abstract":"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 %.","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":"79885274","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
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
Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1093
Abdul Naeem, John Florence Oluwabukola, Ologe Oluwatoyin
{"title":"The effects of magnetic and radiometric responses on hydrothermal zones and its implication in minerals characterization over part of Nasarawa, North Central Nigeria","authors":"Abdul Naeem, John Florence Oluwabukola, Ologe Oluwatoyin","doi":"10.47253/jtrss.v11i1.1093","DOIUrl":"https://doi.org/10.47253/jtrss.v11i1.1093","url":null,"abstract":"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.","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":"91488929","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
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
Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2023-06-30 DOI: 10.47253/jtrss.v11i1.1090
Nur Nadirah Abdul Halim, Ahmad Syazni Kamarudin
{"title":"Notes on Fenbendazole resistance of Boer goats in a farm in Setiu, Terengganu","authors":"Nur Nadirah Abdul Halim, Ahmad Syazni Kamarudin","doi":"10.47253/jtrss.v11i1.1090","DOIUrl":"https://doi.org/10.47253/jtrss.v11i1.1090","url":null,"abstract":"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.","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":"139366340","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
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
Journal of Tropical Resources and Sustainable Science (JTRSS) Pub Date : 2022-12-30 DOI: 10.47253/jtrss.v10i2.1005
Mursyida Mohd Nazri, Leony Tham Yew Seng Yew Seng, Nurhanan Abdul Rahman
{"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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