检索结果-南通市图书馆

Optimization of Tiger Nut (Cyperus esculentus) Roasting Process Using Response Surface Methodology

Food and Nutrition Sciences 2022年第10期13卷 811-825页

作者： Bou Ndiaye Alioune Sow samba faye Oumar Ibn Khatab Cissé Fatou Dieye Papa Guedel faye Mama Sakho Nicolas Cyrille Ayessou Laboratoire Eau Energie Environnement et Procédés Industriels (LE3PI) Ecole Supérieure Polytechnique (ESP) de Dakar Université Cheikh Anta Diop (UCAD) Dakar Sénégal Centre d’Etudes sur la Sécurité Alimentaire et les Molécules Fonctionnelles (CESAM) ESP Dakar Sénégal Ecole Supérieure de Génie Industriel et Biologique (ESGIB) Dakar Sénégal UFR des Sciences Agronomiques de l’Aquaculture et des Technologies Alimentaires (S2ATA) Université Gaston Berger Saint-Louis Sénégal Université du Sine Saloum El Hadj Ibrihima NIASS (USSEIN) Kaolack Sénégal Ecole Nationale Superieure d’Agriculture (ENSA) UIDT Thies Sénégal

Tiger nut (Cyperus esculentus) is an underutilized tuber and a non-conventional oil seed which are known for their biological effect. The transformation of tubers into nutritional and stable flour could be important for West Africa populations. Thus, roasting is a process that improves the biochemical composition of seeds. The purpose of this study was to optimize temperature and roasting time on Tiger nut’s tubers in order to produce high nutritional tiger nut flour. A response surface methodology was used to optimize the roasting process in a temperature range (130°C - 150°C) and in a duration range (20 - 35 min). The data are processed by the software Statgraphic Centurion XVI version 16.2.04. Total polyphenols and flavonoids contents, antioxidant activity, titratable acidity, browning index and Maillard reaction products absorbance were evaluated. A second-order polynomial model was established to predict optimal values, included temperature and time. The contents of polyphenols and flavonoids range respectively from 0.196 to 0.891 g GAE/100g and from 0.022 to 0.051 g CE/100g, the antioxidant activity ranges from 25.21 to 57.09%, titratable acidity varies between 0.193 and 0.472 g/100g, the browning index from 28.42 to 56.20 and the absorbances at 420 nm of Maillard Reactions Products ranged between 0.365 and 0.897. The global desirability was 90%. Roasting had significant effects (p 0.05) on titratable acidity, browning index and antioxidant activity. The optimum roasting conditions were established at the temperature of 147°C for 38 minutes. Experimental values of parameter for flour obtained in optimal condition were proximate to predict values excepted titratable acidity. The model performance is acceptable for this study. The research for the optimal roasting conditions for tiger nut reveals an appropriate temperature and time combination which could improve the biochemical composition with a more attractive color.

关键词： Tiger Nut Roasting Optimization Physicochemical And Biochemical Analyses

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Metastatic Prostate Cancer under Androgen Deprivation Therapy: Factors Influencing Castration Resistance

引用

Open Journal of Urology 2020年第7期10卷 225-232页

作者： Modou Ndiaye Ousmane Sow Babacar Sine Omar Gaye Alioune Sarr Abdoulaye Ndiath Cyrille Ze Ondo Amath Thiam Ndeye Aissatou Bagayogo samba Thiapato faye Ndiaga Seck Ndour Aboubacar Traore Ngor Mack Thiam El Hadj Malick Diaw Yaya Sow Boubacar Fall Babacar Diao Alain Khassim Ndoye Urology-Andrology Department Aristide Le Dantec Hospital Dakar Senegal Urology-Andrology Department De la Paix Hospital Ziguinchor Senegal

Objective: To evaluate the factors predicting the time to progression to castration-resistant in metastatic prostate cancer under Androgen Deprivation Therapy (ADT) in our center. Patients and Methods: This is a retrospective, descriptive, analytical study in a single center over a period of 2 years. It has interest patients followed for metastasized prostate cancer under ADT. The parameters studied were: epidemiological, clinical, paraclinical, prostate specific antigen (PSA) nadir, time to nadir (TTN) and their link with the castration resistance. Results: The frequency of castration resistant prostate cancer was 28 patients per year. The mean age was 70.4 ± 7.9 years. An ECOG score ≥ 3 was more common as was the cT2c stage. The median of the initial total PSA was 489.6 ng/ml (203.3;1653.2). All patients had adenocarcinoma. The International Society of Urological Pathology (ISUP) 1 was more frequent. Bone metastases were more frequent. The medians of nadir, TTN and the castration resistance were 19.3 ng/ml (3.7;102.1), 5.5 months (3;9) and 11 months (6;15.3), respectively. The Eastern Cooperative Oncology Group (ECOG) score, clinical stage, metastatic site, the nadir and its TTN influenced the DSR. Age, lymph node involvement, initial total PSA and Gleason score did not influence the castration resistance. Conclusion: ADT should be initiated as soon as possible before an attack of general and/or clinical stage advanced to delay resistance. A drilling should be associated with this hormone therapy as much as possible because of its gain on resistance.

关键词： Cancer Prostate Androgen Deprivation Therapy Resistance Prognoses

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effects of Seed Pretreatment on Germination, Growth and Yield of <i>Momordica charantia</i>L.

引用

Agricultural Sciences 2021年第1期12卷 39-57页

作者： samba Balde Nicolas Cyrille Ayessou Antoine Sambou Khadim Niane Papa Guedel faye Mady Cisse Codou Mar Diop Polytechnic Higher School Cheikh Anta Diop University Dakar Sénégal Center for Studies on Food Safety and Functional Molecules (CESAM) Cheikh Anta Diop University Dakar Sénégal Department of Agroforestry Assane Seck University of Ziguinchor Sénégal

Momordica charantia is a plant species widely used in food and traditional medicine. However, the germination techniques and the performances of M. charantia are poorly understood by the populations. This study aims to better understand the germination, growth and development characteristics, and yield of M. charantia. Three pretreatments of the seeds are used for the shortening of the pre-germination period: soaking the seeds in tap water for 24 hours (batch 2), in hot water at 80˚C (batch 3), for 24 hours and in the boiling water at 100˚C for 24 hours (batch 4). A control without soaking (batch 1) was also carried out. The seeds were sown in plastic boxes in the laboratory with sterile sand and directly in the nursery in polyethylene sleeves. The influence of the light factor (light and dark) and watering frequency (every day and every two days) on the growth and yield parameters was evaluated respectively in the laboratory and in the nursery. Germination, growth and yield parameters were determined. The results show that the light and frequency of watering factors have no influence (p > 0.05) on the rate and duration of seed germination unlike pretreatments. Thus, Batch1 and 2 exhibit significantly higher germination rates (70% ± 16%) than Lots 3 and 4 (21% ± 15%) in the laboratory and in the nursery. On the other hand in terms of germination time, batch 3 and 4 displayed shorter durations (14 days) than those batch1 and 2 (23 days). Growth parameters and yield (fruit and seeds) are strongly influenced by watering frequency, unlike pretreatments which only affect yield. Growth and yield parameters are significantly higher with daily watering than daily watering. Ultimately, this study showed that pretreatments have an influence on the duration and rate of germination as well as the frequency of watering on the performance of M. charantia

关键词： Momordica charantia Germination Performance Yield

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optimization of the Aqueous Decoction Process of Combretum micranthum Leaves

引用

Food and Nutrition Sciences 2023年第3期14卷 277-286页

作者： Papa Guedel faye Edouard Mbarick Ndiaye samba Baldé Alioune Sow Omar Khatab Cissé Nicolas Cyrille Ayessou Mady Cisse Laboratory of Water Energy Environment and Industrial Processes (LE3PI) Polytechnic Higher School Cheikh Anta Diop University of Dakar (ESP-UCAD) Dakar Senegal UFR Agronomic Sciences Aquaculture and Agrifood Technologies Gaston BERGER University Dakar Senegal National School of Agriculture Iba Der THIAM University Thies Senegal Center for Studies on Food Security and Functional Molecules (CESAM) Dakar Senegal

This work proposes to compare the extraction of total polyphenols and the coloring obtained after several series of decoction at 100°C/20min, of whole or crushed leaves of Combretum micranthum. The total phenolic content of the extracts obtained after decoction was determined by Folin’s method. The color parameters were measured using a colorimeter based on the CIELAB system. The analysis of variance (ANOVA) shows significant differences (p 0.05) on different parameters evaluated. The Minitab 19 software was used to classify the extracts according to the color parameters (L, A, and B). The results showed that the maximum of polyphenols (21.67%) was extracted in the crushed leaves after three series of decoctions while with the whole leaves the maximum of 16.17% is obtained after six series of decoctions. The concentration of total polyphenols becomes low from four series of decoctions with 0.146 g·AG·100 g-1 MS. The red and yellow coloring drops respectively by 85 and 69% with crushed leaves and 64 and 21% with whole leaves. The conductivity and the brix of the extracts fall according to the series of decoctions. These results show that for optimal use of C. micranthum leaves in traditional medicine, crushed leaves and three series of decoctions are indicated and sufficient.

关键词： Combretum micranthum Extraction Decoction Polyphenols Coloring

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Proximate and Major Minerals Components of the Edible Pulp of <i>Momordica charantia</i>Fruit

引用

Food and Nutrition Sciences 2020年第1期11卷 32-39页

作者： samba Balde Nicolas Cyrille Ayessou Oumar Ben Khatab Cisse Papa Guedel faye Mady Cisse Codou Mar Diop Ecole Supérieure Polytechnique University Cheikh Anta Diop Dakar Sénégal Centre d’Etudes sur la Sécurité Alimentaire et les Molécules Fonctionnelles (CESAM) Université Cheikh Anta Diop Dakar Sénégal

Momordica charantia (Cucurbitaceae), is a plant commonly used in traditional medicine in Senegal whose fruits are weakly consumed by the population. However, no data exists on the nutritional intake of the latter. This work aims to determine the physicochemical and biochemical characteristics of the pulp of Momordica charantia. The study focused on two lots of fruits from two geographically different regions of Senegal (Dakar and Fatick). The biochemical analyses of the pulp showed average values of protein from 2.39 ± 0.01 g/100 g to 3.19 ± 0.01 g/100 g;reducing sugar from 4.22 ± 0.10 g/100 g to 3.55 ± 0.10 g/100 g;totals sugar from 4.43 ± 0.02 g/100 g to 3.38 ± 0.58 g/100 g. The average contents of polyphenol and flavonoids were respectively from 1.91 ± 0.04 g/100 g to 1.04 ± 0.09 g/100 g and 32.59 ± 0.04 mg/100 g and 20.75 ± 1.19 mg/100 g. According to these results, the fruit of M. charantia may be considered as rich in antioxidant. At the opposite, it is very weak in mineral elements, such as calcium and potassium (1.01 mg/100 g;3.38 mg/100 g). Meanwhile, the seeds content 24% of lipids. Thus, investigations should be done on its biological proprieties, physical and biochemical components.

关键词： Momordica charantia Characterization Pulp

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Lamella Silicon Solar Cell under Both Temperature and Magnetic Field: Width Optimum Determination

引用

Journal of Electromagnetic Analysis and Applications 2020年第4期12卷 43-55页

作者： Dibor faye Sega Gueye Mor Ndiaye Mamadou Lamine Ba Ibrahima Diatta Youssou Traore Masse samba Diop Gora Diop Amadou Diao Gregoire Sissoko Laboratory of Semiconductors and Solar Energy Physics Department Faculty of Science and Technology University Cheikh Anta Diop Dakar Senegal

This work deals with determining the optimum thickness of the lamella wafer of silicon solar cell. The (p) base region makes up the bulk of the thickness of the wafer. This thickness has always been a factor limiting the performance of the solar cell, as it produces the maximum amount of electrical charges, contributing to the photocurrent. Determining the thickness of the wafer cannot be only mechanical. It takes into account the internal physical mechanisms of generation-diffusion-recombination of excess minority carriers. They are also influenced by external factors such as temperature and magnetic field. Under these conditions, magneto transport equation is required to be applied on excess minority carrier in lamella base silicon solar cell. It yields maximum diffusion coefficient which result on Lorentz law and Umklapp process. Then from photocurrent, back surface recombination velocity expressions are derived, both maximum diffusion coefficient and thickness dependent. The plot of the back surface recombination calibration curves as function of lamella width, leads to its maximum values, trough intercept points. Lamella optimum width is then obtained, both temperature and magnetic field dependent and expressed in relationships to show the required base thickness in the elaboration process.

关键词： Silicon Vertical Junction Back Surface Recombination Velocity Magnetic Field Temperature Lamella Width

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frequency of Cardiovascular Risk Factors in Systemic Lupus Erythematosus: A Case-Control Study in a Department of Internal Medicine in Sub-Saharan Africa

引用

Open Journal of Internal Medicine 2020年第1期10卷 1-12页

作者： Maï mouna Sow Baï dy Sy Kane Abdourahmane samba Awa Cheikh Ndao Nafissatou Diagne Boundia Djiba Mouhamed Dieng Atoumane faye Abdoulaye Pouye Internal Medicine Department Aristide Le Dantec Teaching Hospital Dakar Senegal Biochemistry Department Aristide Le Dantec Teaching Hospital Dakar Senegal

Background: The morbidity and mortality of systemic lupus erythematosus are largely due to accelerated atherosclerosis. This is partly related to the high prevalence of traditional cardiovascular risk factors. The aim of our study was to determine the frequency of these factors in lupus patients compared to a control population in a department of internal medicine. Methods: We realized a case-control study in patients with systemic lupus erythematosus according to ACR criteria in 1997. Patients were matched by age and gender with controls subjects without autoimmune disease. We studied the frequency of traditional cardiovascular risk factors in both populations. The study was done in the department of internal medicine of Aristide Le Dantec teaching Hospital, in Senegal, during the period from August 2017 to December 2018. The statistical analysis was performed with SPSS 23.0 software and the level of significance was retained for a p-value Results: We recruited 100 subjects including 50 patients and 50 controls. The mean age was 33.5 ± 11.3 years in cases and 33.3 ± 11.3 years in controls. Dyslipidemia was significantly associated with systemic lupus erythematosus (p = 0.009). Levels of triglycerides (p Conclusion: Traditional cardiovascular risk factors including dyslipidemia and hyperuricemia were more common in patients. Similarly, renal failure was associated with lupus.

关键词： Cardiovascular Risk Factors Systemic Lupus Erythematosus Sub-Saharan Africa

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pernicious Anemia Associated Autoimmune Diseases in a Sub Saharian African Internal Medicine Service

引用

Open Journal of Internal Medicine 2014年第3期4卷 59-63页

作者： Abdoulaye Pouye Seynabou Fall Dieng Daher Abdoukarim Oumar Fatou samba Diago N’Diaye Nafissatou Diagne Sakho Atoumane faye Souhaibou N’Dongo Medical Clinic 1 University Teaching Hospital Aristide le Dantec/Cheikh Anta Diop University of Dakar Dakar Senegal

Introduction: Pernicious anemia is an autoimmune disease. It is characterized by the presence of an autoimmune atrophic gastritis and various autoantibodies that lead to a vitamin B12 deficiency responsible for a macrocytic anemia. It is frequently associated with other specific or non-organ- specific autoimmune diseases. We report six patients with pernicious anemia associated with other autoimmune diseases. Patients and Results: There were six patients (4 females/2 males), mean age of 39.67 years. In all cases it was found macrocytic anemia. The average Hb was 6.08 g/dl and the average MGV: 110.67 fl. Bone marrow aspiration was performed in all patients. Megaloblastosis compatible with a lack of vitamin B12 or folic acid was constant. Determination of serum vitamin B12 was low in all cases while folic acid levels were within standards. Immuno- logically it was found in all patients, a positivity of anti-intrinsic factor antibody and/or anti- parietal cells antibody at rates up to 67 times over normal ranges. Pernicious anemia was associated with autoimmune thyroid dysfunction in 4 patients. It was two cases of Hashimoto thyroiditis at hypothyroidic phase (high TSHus, thyréoperoxydase anti-antibody positive (over 10 N) in both cases and Graves’ disease in the two other cases. Pernicious anemia was associated with a syndrome of primary antiphospholipid antibody in a case. Furthermore pernicious anemia was found in a patient autoimmune type 1 diabetes with strongly positive anti -GAD antibodies and rheumatoid arthritis by retaining it in the diagnosis of multiple autoimmune syndrome. Conclusion: These cases illustrate the existence of the association of pernicious anemia with other autoimmune diseases in our context. This should encourage practitioners to seek hided autoimmune diseases when they consider the diagnosis of pernicious anemia.

关键词： Pernicious Anemia Auto-Immune Diseases Auto Immune Thyroid Dysfunction Multiple Auto-Immune Syndrome

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Impact of Storage Conditions on the Physicochemical Characteristics of Baobab (Adansonia digitata L.) Seed Oil

引用

Food and Nutrition Sciences 2022年第4期13卷 373-386页

作者： Edouard Mbarick Ndiaye Papa Guédel faye Alioune Sow Khadim Niane Seyni Ndiaye samba Baldé Omar Ibn Khatab Cisse Nicolas Cyrille Ayessou Mady Cisse Laboratory of Water Energy Environment and Industrial Processes (LE3PI) Polytechnic Higher School Cheikh Anta Diop University of Dakar (ESP-UCAD) Dakar Center of Studies on Food Security and Functional Molecules (CESAM-RESCIF) ESP-UCAD Dakar Senegal UFR of Agronomic Sciences Aquaculture and Food Technologies (S2ATA) Gaston Berger University of Saint-Louis Saint-Louis Senegal National School of Agriculture Iba Der Thiam University of Thies Thies Senegal

The evolution of some quality markers of baobab (Adansonia digitata L.) was studied. Baobab oil extracted by pressing was packaged in 30 mL non-amber glass bottles and stored at different temperatures: 20°C, 30°C and 45°C. The physicochemical parameters (acid, peroxide, iodine, saponification, refraction and color indices) were determined during three months’ storage. A significant 5% increase in acid, peroxide and saponification value was observed over time. However, the iodine value decreased. The yellowing and refractive index remained stable while storage at 45°C caused the most significant changes in chemical parameters. The results obtained show that oils stored at 20°C had the lowest acid (2.42 ± 0.26 mg KOH/g) and peroxide (0.82 ± 0.25 mEqO2/Kg) value after three months of follow-up.

关键词： Adansonia digitata L. Oil Seeds Physicochemical Storage

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rosai-Dorfman Disease: Two Cases Report and Literature Review

引用

Open Journal of Internal Medicine 2015年第2期5卷 15-19页

作者： Atoumane faye Nafissatou Diagne Sakho Fatou samba D. Ndiaye Seynabou Fall Awa Cheikh Ndao Mbengue Boundia Djiba Baidy Sy Kane Souhaibou Ndongo Abdoulaye Pouye Medical Clinic 1 University Teaching Hospital Aristide Le Dantec/Cheikh Anta Diop University of Dakar Dakar Sénégal

The lymph node is the revelation mode of several pathology. In tropical area, their etiology are dominated by tuberculosis and hemopathy. Some etiology such as histiocytosis are rarely mentioned. We report two cases of Rosai-Dorfman-Destombes disease. The first observation concerned a patient of 45 years without pathological antecedent, who had a inguinal and cervical tumoral lymph nodes. This evolved in a feverish poor general condition. Infection research was negative. Morphological explorations found deep lymph nodes. The excision biopsy examination concluded to Rosai-Dorfman-Destombes disease. The second observation concerned a patient of 40 years without pathological antecedent, who had a chronic non-inflammatory left supra-collarbone lymph node, associated with poor general condition and fever. X-ray showed mediastinal lymph nodes and ultra-sonography showed mesenteric lymph nodes, and latero-aortic lymph nodes. The examination of the excision biopsy was for Rosai Dorfman Destombes disease. The difficulty of diagnosis in our regions based on technical tray lack and our patients financial limits. Also this disease is rarely mentioned first. This is often the source of considerable diagnostic delay noted in our two patients and therefore the initiation of an untimely anti-tuberculosis treatment.

关键词： Histiocytosis Rosai-Dorfman-Destombes Disease Sub-Saharan Africa

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：