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Finger millet porridges subjected to different processing conditions showed low glycemic index and variable efficacy on plasma antioxidant capacity of healthy adults

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Food Production, Processing and Nutrition 2020年第1期2卷 129-139页

作者： disna kumari Anoma Chandrasekara Prisko Athukorale Fereidoon Shahidi Department of Applied Nutrition Wayamba University of Sri LankaMakanduraGonawila 60170Sri Lanka Ministry of Health Nutrition&Indigenous MedicineSuwasiripaya385Colombo 10Sri Lanka Department of Biochemistry Memorial University of NewfoundlandSt.John’sNL A1B 3X9Canada

Finger millet porridges(FMP),rich in nutrient and non-nutrient compounds have been used in the traditional food cultures in *** aims of the study were to determine the effect of different processing conditions of finger millet grains on glycemic response,phenolic content and the antioxidant activities of FMP and to determine the short term and long term efficacy of its consumption on plasma antioxidant levels of healthy *** types of FMP were prepared combining different processing *** content of porridges as well as antioxidant activities were *** glycemic index(GI)and glycemic load(GL)values of FMP were also *** long term efficacy of FMP consumption on plasma glucose(PG),total cholesterol(TC)levels and plasma antioxidant capacity(PAC)of 18 subjects were investigated using a 24 weeks randomized cross-over *** short term efficacy of porridge consumption on AC was *** was measured by trolox equivalent antioxidant capacity(TEAC)and ferric ion reducing antioxidant power(FRAP).All FMP exhibited low GI values(<55)except the raw roasted flour which showed high and medium GI values for both particle sizes *** of finger millet grains with 15 min steaming produced FMP with low glycemic response and possessed high *** to baseline,PAC measured using FRAP and TEAC assays increased after 8 weeks consumption of porridge though significant changes were not observed for PG and TC ***,PAC was increased by 23 and 14%after 2 h of porridge consumption as measured by TEAC and FRAP,*** consumption increased the plasma total antioxidant capacity of healthy *** research on examining the potential of FMP on improving the antioxidant capacity in patients with diabetes is warranted.

关键词： FRAP Long term and short term efficacy Randomized cross-over study TEAC TPC

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Effect of processing on the antioxidant activities of porridges and Pittu prepared from finger millets (Eleusine coracana)

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Food Production, Processing and Nutrition 2022年第1期4卷 235-248页

作者： Anoma Chandrasekara Indraneela Senanayake disna kumari Fereidoon Shahidi Department of Applied Nutrition Wayamba University of Sri LankaMakanduraColombo 60170GonawilaSri Lanka Department of Biochemistry Memorial University of NewfoundlandSt.John’sNL A1B 3X9Canada

Finger millets are important coarse grains that exhibit high levels of phenolic compounds and antioxidant activities among other cereals. Grains are subjected to a number of thermal treatments and this could affect the contents and bioactivities of phenolic compounds. The aim of the present study was to determine the phenolic contents and antioxidant activities of finger millet flour and foods, namely porridges and Pittu subjected to several thermal treatments such as roasting, parboiling, and parboiled roasting of flour and open boiling and steaming of foods prepared using flour. The effect of the addition of spices on phenolic content and antioxidant activities to open boiled foods was determined. Antioxidant activities of phenolic extracts obtained from finger millet flour and foods were studied for their total phenolic, flavonoids and proanthocyanidins contents, radical scavenging capacities, reducing power, ferrous ion chelating capacity, and antioxidant activity in a β-carotene/linoleate emulsion. The roasted flour and foods had higher total phenolic content (TPC) than other counterparts and ranged from 21.58 to 28.63 µmol ferulic acid equivalents/g dry matter. All flour and food preparations exhibited effective inhibition of radicals, reducing power, ferrous ion chelating activity, and antioxidant activity in the β-carotene/linoleate emulsion and the degree of activity depended on the processing conditions adopted in food *** prepared using steaming showed lower phenolic content and antioxidant activities in general than those of open-boiled counterparts. The addition of spices, namely garlic and cinnamon improved the phenolic contents and antioxidant activities of open-boiled porridges. The knowledge generated from this study may help to exploit the use of finger millets as a functional food ingredient to promote health and wellness.

关键词： Antioxidants Parboiling Roasting Pittu Porridges

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Phenotypic Characterization of Oryza nivara(Sharma et Shastry)Collected from Different Ecological Niches of Sri Lanka

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Phyton-International Journal of Experimental Botany 2022年第6期91卷 1269-1287页

作者： Salinda Sandamal Asanka Tennakoon Parakkrama Wijerathna Song Ge DABN Amarasekera Buddhi Marambe Sara MElwany Sobhy Sorour Ayman El Sabagh Mohamed M.Hassan disna Ratnasekera Department of Agricultural Biology Faculty of AgricultureUniversity of RuhunaMatara81100Sri Lanka State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of SciencesBeijing100093China University of Chinese Academy of Sciences Beijing100049China Department of Crop Science Faculty of AgricultureUniversity of RuhunaMatara81100Sri Lanka Department of Crop Science Faculty of AgricultureUniversity of PeradeniyaKandy20400Sri Lanka Department of Agronomy Faculty of AgricultureKafrelsheikh UniversityKafrelsheikh33516Egypt Department of Biology College of ScienceTaif UniversityTaif21944Saudi Arabia

Information on the genetic diversity of wild rice species in Sri Lanka is relatively meagre,though it plays a key role in crop improvement programs of cultivated rice(Oryza sativa L.).The present study was carried out to identify the morphological variation pattern of the wild populations of *** in Sri *** populations(P1 to P7)collected from different agro-ecological regions were characterized in a common garden based on nine morphological *** findings revealed a high level of phenotypic variation between populations when compared to within a *** most variable traits were the flag leaf panicle neck length(FLPNL)and flag leaf angle(FLA),whereas the least variable trait was the flag leaf length(FLL).Box plots clearly illustrated the large differentiation of phenotypic traits in the entire distribution of wild rice *** cumulative values of the two principal components,i.e.,FLPNL and FLA,explained 58.7%of the total *** from similar natural habitats clustered *** P7 was adapted to intercept more sunlight by increasing flag leaf width(FLW)and FLA to compete with weeds and other shrubs.P2 and P5 were the most closely related populations representing approximately similar ecological conditions of the dry *** P3 population from the intermediate zone showed a vigorous plant growth with the highest plant height,culm girth and awn length(P<0.05).Knowledge of such morphological diversity would facilitate designing conservation strategies and basic information for the proper utilization of wild resources in rice genetic improvement.

关键词： AA-genome morphological traits natural habitats population differentiation wild rice

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Expired drugs as vapor-phase corrosion inhibitors of copper in simulated marine atmospheric environment

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Journal of Central South University 2024年第10期31卷 3570-3582页

作者： WANG Xin-wei ZHANG Tian-long LI Yan-tao YANG Li-hui XU Wei-chen disna Ratnasekera HAN Tao Key Laboratory of Advanced Marine Materials Key Laboratory of Marine Environmental Corrosion and Bio-foulingInstitute of OceanologyChinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China University of Ruhuna Matara 81000Sri Lanka Qingdao Water Investment Yellow River Eastward Diversion Investment&Operation Co. Ltd.Qingdao 266100China Qingdao Expert Workstation for Intelligent Anticorrosion for Water Diversion Project Qingdao 266100China

Urea,paracetamol and glutamine(based on the expired drugs)were selected as vapor-phase corrosion inhibitors(VCIs)to study their corrosion protection effect on red copper in simulated marine atmospheric environment by using weight loss,electrochemical measurement techniques(specially designed electrochemical testing device for simulating marine atmospheric environments)and surface morphology characterization analysis(SEM/EDS,XRD,RAMAN,XPS).Weight loss results show that the three corrosion inhibitors have good corrosion inhibition effect on red copper,and the corrosion inhibition efficiency in the order of glutamine(83.62%)>urea(68.46%)>paracetamol(61.47%).Surface morphology characterization analysis provides evidence of adsorption of corrosion inhibitors molecules on the red copper surface,thus forming a protective film that blocked the red copper surface from the aggressive chloride ion attack.

关键词： marine corrosion and protection vapor-phase corrosion inhibitor(VCI) copper expired drugs marine atmospheric environment

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Global wild rice germplasm resources conservation alliance:World Wild-Rice Wiring

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Molecular Plant 2024年第4期17卷 516-518页

作者： Xiaoming Zheng disna Ratnasekera Jiayu Fan Robert J.Henry Beng-Kah Song Kenneth M.Olsen Bal Krishna Joshi Maria Celeste N.Banaticla-Hilario Tonapha Pusadee Adane Getachew Melaku Yeyinou Laura Estelle Loko Koukham Vilayheuang Gavers K.Oppong Samuel Aduse Poku Peterson W.Wambugu Song Ge Aldo Merotto Junior Ohn Mar Aung Ramaiah Venuprasad Ajay Kohli Wenbin Zhou Qian Qian National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Sanya National Research Institute of Breeding in Hainan Chinese Academy of Agricultural SciencesBeijing 100081China International Rice Research Institute DAPO Box 7777Metro Manila 4031Philippines Department of Agricultural Biology Faculty of AgricultureUniversity of RuhunaMatara 81000Sri Lanka Yazhouwan National Laboratory No.8 Huanjin RoadYazhou DistrictSanya CityHainan Province 572024China Hainan University Haikou 570228China ARC Centre of Excellence for Plant Success in Nature and Agriculture University of QueenslandBrisbaneQLD4072Australia School of Science Monash University Malaysia47500 Bandar SunwaySelangor 47500Malaysia Department of Biology Washington University in St.LouisSt.LouisMO 63130-4899USA National Agriculture Genetic Resources Center(Genebank) KhumaltarPO Box 3055KathmanduNepal Plant Biology Division Insttute of Biological SciencesUniversity of the Pilippines Los BanosLos BanosLaguna 4031Philippines Division of Agronomy Department of Plant and Soil SciencesFaculty of AgricultureChiang Mai UniversityChiang Mai 50200Thailand Bio and Emerging Technology Institute Addis Ababa 1165Ethiopia National University of Sciences TechnologiesEngineering and Mathematics(UNSTIM)Dassa-ZouméBP 14Benin National Genebank Rice and Cash Crops Research CenterNAFRIVientiane 0605Lao PDR Plant Sciences and the Bioeconomy Rothamsted ResearchHarpenden AL52JQUK UK Future Food Beacon of Excellence and School of Biosciences and University of Nottingham Nottingham LE125RDUK Department of Plant and Environmental Biology University of GhanaAccraGhana Kenya Agricultural and Livestock Research Organization Genetic Resources Research InstituteNairobi 00200Kenya Institute of Botany Chinese Academy of SciencesBeijing 100093China Federal University of Rio Grande do Sul UFRGSPorto Alegre 91501-970RSBrazil Department of Agricultur

Wild relatives of crop are key genetic resources serving as diversity reservoirs for crop improvement under changing ***(Oryza sativa)is one of the most important crops in the world,providing staple food for half of the world's *** rice is thus a critical germplasm resource for sustained global food security,ensuring high production yields,improved quality,and stress resistance in the face of climate *** rice is closely related to domesticated rice and has a rich genetic diversity and exceptional adaptability to extreme *** has played a pivotal role in the history of rice hybridization and has become a key resource for rice breeding *** identification of wild-type cytoplasmic male sterility resources paved the way for the achievement of the“three lines”goal in hybrid rice,leading to a significant increase in rice *** addition,the use of resistance alleles found in wild rice is making rice production more resilient to losses caused by environmental ***,wild rice germplasm resources are threatened due to habitat destruction and other anthropogenic *** the same time,the lack of centralized distribution of wild rice has hampered the sharing of basic information on wild rice resources and the utilization and conservation of wild rice in each country,as well as collaboration among scientists.

关键词： germplasm breeding crops

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一种钙依赖型蛋白激酶通过调控过氧化氢水解及气孔运动而影响拟南芥对干旱胁迫的响应

一种钙依赖型蛋白激酶通过调控过氧化氢水解及气孔运动而影响拟南...

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2006年拟南芥研究学术研讨会

作者： disna Ratnaseketra 邹俊杰张文正宋莲芬武维华植物生理学与生物化学国家重点实验室国家植物基因中心(北京)中国农业大学植物生理学与生物化学国家重点实验室国家植物基因中心(北京)中国农业大学植物生理学与生物化学国家重点实验室国家植物基因中心(北京)中国农业大学植物生理学与生物化学国家重点实验室国家植物基因中心(北京)中国农业大学植物生理学与生物化学国家重点实验室国家植物基因中心(北京)中国农业大学

＜正＞钙依赖型蛋白激酶（CDPKs）是高等植物特有的一类丝／苏氨酸激酶。拟南芥CDPK超基因家族共有34个成员。由于钙信使在植物细胞信号转导中的重要作用,CDPKs作为可能的钙信使感受器（Ca2+Sensors）其功能和作用的研究一直倍受关注... 详细信息

＜正＞钙依赖型蛋白激酶（CDPKs）是高等植物特有的一类丝／苏氨酸激酶。拟南芥CDPK超基因家族共有34个成员。由于钙信使在植物细胞信号转导中的重要作用,CDPKs作为可能的钙信使感受器（Ca2+Sensors）其功能和作用的研究一直倍受关注。尽管10余年来的许多研究工作都表明部分 CDPKs可能在植物响应逆境胁迫的信号转导过程中有重要作用,但却一直未就CDPK的下游功能分

关键词：钙依赖型蛋白激酶过氧化氢酶过氧化氢气孔运动水分胁迫

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