首页 > 最新文献

National Journal of Biological Sciences最新文献

英文 中文
Diversity of the Phasmids (Phasmatodea) from the NaraDesert, Sindh Pakistan 巴基斯坦信德省naraderdesert的Phasmids (Phasmatodea)的多样性
Pub Date : 2021-06-30 DOI: 10.37605/njbs.v2i1.1
Nara desert can be attributed by high wind velocity, heavy shifting and rolling of sand dunes; high diurnal variation of temperature; scanty rainfall; extreme solar radiation and high rate of evapo-transpiration. Phasmids are terrestrial, nocturnal, phytophagous insects found in nearly all temperate and tropical ecosystems. Still now 3,000 species of this group has been described worldwide. Stick insects generally live in trees and bushes, but some species live entirely on grassland. The order Phasmatodea has a worldwide distribution, but most species are found in the tropics. During the present study 05 extensive trips were carried out in Nara desert in result of this survey 87 specimens of stick insect were collected and wondering only single species i-e Carausius (Dixippus) morosus which show its rare status in Pakistan. It was interesting to note that mostly the samples were captured from wheat and other wild vegetation however, its greater percentage was noticed on Acacia nilotica i-e 33.33% and least were reported from Acacia senegal i-e 11.11% female ration was high than male. Beside this, our field observation show that Carausius (Dixippus) morosus feed on fresh leaves. Beside this, it was also noted that Phasmids has strong camouflage ability to escape from predators. Further, it has close resemblance with bark, leaves and even moss or lichen.
奈良沙漠形成的主要原因是风速大、沙丘移动和滚动大;温度日变化大;降水量极少;极端的太阳辐射和高蒸发蒸腾率。节肢动物是一种陆生、夜行、食植物的昆虫,几乎在所有温带和热带生态系统中都有发现。到现在为止,在世界范围内已经有3000个物种被发现。竹节虫一般生活在树木和灌木丛中,但有些种类完全生活在草原上。Phasmatodea目在世界范围内分布,但大多数种类都在热带地区发现。本研究在纳拉沙漠进行了05次大范围的考察,共采集到竹节虫标本87种,其中仅发现一种-卡劳乌斯(Dixippus) morosus,显示了其在巴基斯坦的稀有地位。值得注意的是,大部分样本采集自小麦和其他野生植被,但尼罗金合欢(Acacia nilotica i-e)的检出率最高,为33.33%,塞内加尔金合欢(Acacia senegal i-e)的检出率最低,为11.11%。除此之外,我们的野外观察表明,卡劳修斯(Dixippus) morosus以新鲜的叶子为食。除此之外,还需要注意的是,Phasmids具有强大的伪装能力,可以逃避捕食者。此外,它与树皮、树叶甚至苔藓或地衣非常相似。
{"title":"Diversity of the Phasmids (Phasmatodea) from the Nara\u0000Desert, Sindh Pakistan","authors":"","doi":"10.37605/njbs.v2i1.1","DOIUrl":"https://doi.org/10.37605/njbs.v2i1.1","url":null,"abstract":"Nara desert can be attributed by high wind velocity, heavy shifting and rolling of sand dunes; high diurnal variation of temperature; scanty rainfall; extreme solar radiation and high rate of evapo-transpiration. Phasmids are terrestrial, nocturnal, phytophagous insects found in nearly all temperate and tropical ecosystems. Still now 3,000 species of this group has been described worldwide. Stick insects generally live in trees and bushes, but some species live entirely on grassland. The order Phasmatodea has a worldwide distribution, but most species are found in the tropics. During the present study 05 extensive trips were carried out in Nara desert in result of this survey 87 specimens of stick insect were collected and wondering only single species i-e Carausius (Dixippus) morosus which show its rare status in Pakistan. It was interesting to note that mostly the samples were captured from wheat and other wild vegetation however, its greater percentage was noticed on Acacia nilotica i-e 33.33% and least were reported from Acacia senegal i-e 11.11% female ration was high than male. Beside this, our field observation show that Carausius (Dixippus) morosus feed on fresh leaves. Beside this, it was also noted that Phasmids has strong camouflage ability to escape from predators. Further, it has close resemblance with bark, leaves and even moss or lichen.","PeriodicalId":445719,"journal":{"name":"National Journal of Biological Sciences","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124563040","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
Effect of Drought and Heat Stress on Physiological andBiochemical Characteristics of Wheat 干旱和热胁迫对小麦生理生化特性的影响
Pub Date : 2021-06-30 DOI: 10.37605/njbs.v2i1.2
Wheat is the main crop containing basic calories and proteins. In tropics and subtropics, heat and drought are the major stresses related to environmental conditions that reduce the wheat production. In plants, heat as well as drought stress alters vital activities and generates reactive oxygen species that cause severe oxidative damage to plants. Plants have evolved various protective mechanisms including production of protective proteins to lessen the effect of heat stress. Heat and drought stress alter water relations, osmolyte contents, soluble proteins and sugars. Turgor pressure, ascorbate peroxidase (APX) and peroxidase (POD) are lowest in heat stress. Combined effect of drought and heat stress is more damaging than individual stress on wheat plant.
小麦是含有基本卡路里和蛋白质的主要作物。在热带和亚热带地区,高温和干旱是导致小麦减产的主要环境因素。在植物中,高温和干旱胁迫会改变生命活动,产生活性氧,对植物造成严重的氧化损伤。植物已经进化出多种保护机制,包括产生保护蛋白来减轻热胁迫的影响。高温和干旱胁迫改变了水分关系、渗透物含量、可溶性蛋白质和糖。热应激时胃胀压、抗坏血酸过氧化物酶(APX)和过氧化物酶(POD)最低。干旱和热胁迫的联合效应对小麦植株的危害大于单个胁迫。
{"title":"Effect of Drought and Heat Stress on Physiological and\u0000Biochemical Characteristics of Wheat","authors":"","doi":"10.37605/njbs.v2i1.2","DOIUrl":"https://doi.org/10.37605/njbs.v2i1.2","url":null,"abstract":"Wheat is the main crop containing basic calories and proteins. In tropics and subtropics, heat and drought are the major stresses related to environmental conditions that reduce the wheat production. In plants, heat as well as drought stress alters vital activities and generates reactive oxygen species that cause severe oxidative damage to plants. Plants have evolved various protective mechanisms including production of protective proteins to lessen the effect of heat stress. Heat and drought stress alter water relations, osmolyte contents, soluble proteins and sugars. Turgor pressure, ascorbate peroxidase (APX) and peroxidase (POD) are lowest in heat stress. Combined effect of drought and heat stress is more damaging than individual stress on wheat plant.","PeriodicalId":445719,"journal":{"name":"National Journal of Biological Sciences","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126359608","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
Assessing the Impact of Proline and Abscisic Acid on SaltStress Grown BRASSICA NAPUS at Germination andSeedling Establishment 脯氨酸和脱落酸对盐胁迫下甘蓝型油菜萌发和育苗的影响
Pub Date : 2021-06-30 DOI: 10.37605/njbs.v2i1.4
Abiotic stress such as Salinity causes serious challenge to plant growth and development, so it causes negative influence on plant's growth and yield. Different growth regulators and osmolytes kept attention as productive strategy and help the plant for enhancing stress tolerance and plant' growth and yield improved under stress condition. This project investigates the performance of Brassica napus at germination and seedling stage after application of abscisic acid and proline with combination of salt stress. Experiment was designed in completely randomized manner and petri plates were arranged in different sets with 10 seeds/each and applied with different concentrations of NaCl solutions. Proline (10 -20mM) and ABA (50-100mg/L) was pplied separately and in combination (proline 10 x ABA 50) and (proline 20 x 100) in these sets. After 8 days experiment was terminated and different parameters (germination percentage, seedling growth, shoot and root length, fresh and dry biomass, vigor index, Reletive water content, (RWC) Water content (WC), Root Shoot Ratio (RSR), Shoot Weight Ratio (SWR) and Root Weight Rratio (RWR). Salt stress exhibited significant decrease in shoot and root length, fresh and dry biomass, vigor index, RWC, different ratios (SWR, RWR) and different physiological indices while RSR exhibited increase in comparison to control in all sets. According to this research the application of proline and abscisic acid alone showed increased performance in all studied parameters. Interactions of proline and ABA did not support germination and seedling establishment process. This study concluded that application of proline (10mM) and ABA (100mg/L) improved germination and seedling establishment process very well as compared to other doses in Brasicca napus
盐度等非生物胁迫对植物的生长发育造成了严重的挑战,对植物的生长和产量产生了负面影响。在逆境条件下,不同的生长调节剂和渗透物作为一种生产策略受到重视,有助于提高植物的抗逆性,提高植物的生长和产量。本试验研究了脱落酸和脯氨酸结合盐胁迫对甘蓝型油菜萌发和苗期的影响。实验采用完全随机设计,培养皿每组10粒/个,施用不同浓度的NaCl溶液。每组分别施用10 ~ 20mm的脯氨酸和50 ~ 100mg/L的ABA(脯氨酸10 × ABA 50)和20 × 100的脯氨酸。8 d后终止试验,测定不同参数(发芽率、幼苗生长、茎长和根长、鲜干生物量、活力指数、相对含水量(RWC)含水量(WC)、根冠比(RSR)、茎重比(SWR)和根重比(RWR)。盐胁迫下各处理的茎长和根长、鲜干生物量、活力指数、RWC、不同比值(SWR、RWR)和各生理指标均显著低于对照,而RSR均显著高于对照。根据本研究,单独应用脯氨酸和脱落酸在所有研究参数中表现出提高的性能。脯氨酸和ABA的相互作用不利于种子萌发和幼苗建立。结果表明,与其他剂量相比,施用10mM的脯氨酸和100mg/L的ABA对甘蓝型油菜的萌发和成苗过程有较好的促进作用
{"title":"Assessing the Impact of Proline and Abscisic Acid on Salt\u0000Stress Grown BRASSICA NAPUS at Germination and\u0000Seedling Establishment","authors":"","doi":"10.37605/njbs.v2i1.4","DOIUrl":"https://doi.org/10.37605/njbs.v2i1.4","url":null,"abstract":"Abiotic stress such as Salinity causes serious challenge to plant growth and development, so it causes negative influence on plant's growth and yield. Different growth regulators and osmolytes kept attention as productive strategy and help the plant for enhancing stress tolerance and plant' growth and yield improved under stress condition. This project investigates the performance of Brassica napus at germination and seedling stage after application of abscisic acid and proline with combination of salt stress. Experiment was designed in completely randomized manner and petri plates were arranged in different sets with 10 seeds/each and applied with different concentrations of NaCl solutions. Proline (10 -20mM) and ABA (50-100mg/L) was pplied separately and in combination (proline 10 x ABA 50) and (proline 20 x 100) in these sets. After 8 days experiment was terminated and different parameters (germination percentage, seedling growth, shoot and root length, fresh and dry biomass, vigor index, Reletive water content, (RWC) Water content (WC), Root Shoot Ratio (RSR), Shoot Weight Ratio (SWR) and Root Weight Rratio (RWR). Salt stress exhibited significant decrease in shoot and root length, fresh and dry biomass, vigor index, RWC, different ratios (SWR, RWR) and different physiological indices while RSR exhibited increase in comparison to control in all sets. According to this research the application of proline and abscisic acid alone showed increased performance in all studied parameters. Interactions of proline and ABA did not support germination and seedling establishment process. This study concluded that application of proline (10mM) and ABA (100mg/L) improved germination and seedling establishment process very well as compared to other doses in Brasicca napus","PeriodicalId":445719,"journal":{"name":"National Journal of Biological Sciences","volume":"340 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122994140","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
Bio-Active Potential of Naturally Coloured Foods and TheirNutraceutical Significance 天然有色食品的生物活性潜力及其营养意义
Pub Date : 2021-06-30 DOI: 10.37605/njbs.v2i1.3
Bio-active components and a variety of nutrients in colored foods make them therapeutically rich. Worldwide availability and accessibility of these colored foods depend upon geographical and seasonal variations. Evidence based studies previously proved that colored foods have great influence on the prevention of various carcinogenic disorders and other nutritional deficiencies. Diseases like cardio vascular disease, diabetes and cancer which are more prevalent nowadays can be controlled with the help of these colored foods. Abundance of phytochemicals, vitamins and minerals make them active nutraceutical compounds. Each color identifies specific type of nutrients and these nutrients perform specific functions. For instance, yellow colored foods are abundant in vitamin C, ?-carotenoids and bioflavonoids which act as antioxidant and anticoagulant. Green colored foods are loaded with potassium and foliate to improve vision. Chlorophyll in green foods acts as antioxidant and prevents free radicals production which is the root cause of various diseases. Red colored foods are the good source of phytochemicals and lycopene that show anti-aging and antioxidant properties; on the other hand, white and brown foods also contain a large number of vitamins, minerals and many other active ingredients. These foods also contain a significant amount of fiber that helps to promote gastric functioning. Hence, colored foods help in the prevention of different diseases with the help of essential nutrients and phytochemicals.
有色食品中的生物活性成分和多种营养成分使其具有丰富的治疗效果。这些有色食品在世界范围内的可得性和可及性取决于地理和季节的变化。先前有证据的研究证明,有色食物对预防各种致癌疾病和其他营养缺乏有很大影响。像心血管疾病、糖尿病和癌症这些现在比较流行的疾病都可以通过这些有色食物得到控制。丰富的植物化学物质,维生素和矿物质使其成为有效的营养化合物。每一种颜色都代表着特定类型的营养物质,这些营养物质具有特定的功能。例如,黄色的食物富含维生素C,类胡萝卜素和生物类黄酮,它们具有抗氧化剂和抗凝血剂的作用。绿色的食物富含钾和叶酸,可以改善视力。绿色食品中的叶绿素具有抗氧化剂的作用,可以防止自由基的产生,而自由基是各种疾病的根源。红色食物是植物化学物质和番茄红素的良好来源,具有抗衰老和抗氧化的特性;另一方面,白色和棕色食物也含有大量的维生素、矿物质和许多其他活性成分。这些食物还含有大量的纤维,有助于促进胃功能。因此,有色食物在必需营养素和植物化学物质的帮助下有助于预防不同的疾病。
{"title":"Bio-Active Potential of Naturally Coloured Foods and Their\u0000Nutraceutical Significance","authors":"","doi":"10.37605/njbs.v2i1.3","DOIUrl":"https://doi.org/10.37605/njbs.v2i1.3","url":null,"abstract":"Bio-active components and a variety of nutrients in colored foods make them therapeutically rich. Worldwide availability and accessibility of these colored foods depend upon geographical and seasonal variations. Evidence based studies previously proved that colored foods have great influence on the prevention of various carcinogenic disorders and other nutritional deficiencies. Diseases like cardio vascular disease, diabetes and cancer which are more prevalent nowadays can be controlled with the help of these colored foods. Abundance of phytochemicals, vitamins and minerals make them active nutraceutical compounds. Each color identifies specific type of nutrients and these nutrients perform specific functions. For instance, yellow colored foods are abundant in vitamin C, ?-carotenoids and bioflavonoids which act as antioxidant and anticoagulant. Green colored foods are loaded with potassium and foliate to improve vision. Chlorophyll in green foods acts as antioxidant and prevents free radicals production which is the root cause of various diseases. Red colored foods are the good source of phytochemicals and lycopene that show anti-aging and antioxidant properties; on the other hand, white and brown foods also contain a large number of vitamins, minerals and many other active ingredients. These foods also contain a significant amount of fiber that helps to promote gastric functioning. Hence, colored foods help in the prevention of different diseases with the help of essential nutrients and phytochemicals.","PeriodicalId":445719,"journal":{"name":"National Journal of Biological Sciences","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123406201","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
Prevalence of Hepatitis B in KPK Province Pakistan 巴基斯坦KPK省乙型肝炎患病率
Pub Date : 2020-12-16 DOI: 10.37605/njbs.v1i2.3
Pakistan carries one of the world’s highest burdens of chronic hepatitis and mortality due to liver failure and hepatocellular carcinoma. In Pakistan about 10-12 million of the people are suffering from hepatitis B. World Health organization estimates that there are about 300 million of carriers of HBV all over the world. This study is conducted in the Khyber Teaching Hospital Peshawar. A total of 3,977 patients, belonging to different localities were screened for HBsAg by using ELISA (enzyme linked immunosorbent assay) and ICT (immune chromatographic technique). Out of 3,977 cases, 81(2.03%) were positive for HBV. Co-infection was found only in 6 patients. The common risk factors associated with HBV was found such that history of dental treatment was 70%, treatment from unqualified doctor 49%, history of blood transfusion 43%, history of minor/major surgery 40%, HBV positive patients in family 35%, shaving from street barbers 32%, diabetes 16%, tattooing 11%, HCV co- infection 7.41%, sharing of drug injecting equipment’s 1.2%, HIV and T.B co- infection was 0%
巴基斯坦是世界上慢性肝炎和由肝功能衰竭和肝细胞癌引起的死亡率最高的国家之一。在巴基斯坦,大约有1000万到1200万人患有乙肝。世界卫生组织估计,全世界大约有3亿乙肝病毒携带者。这项研究是在白沙瓦开伯尔教学医院进行的。采用酶联免疫吸附试验(ELISA)和免疫层析技术(ICT)对来自不同地区的3977例患者进行HBsAg筛查。在3977例病例中,81例(2.03%)HBV阳性。合并感染仅6例。与HBV相关的常见危险因素为:牙科治疗史占70%,不合格医生治疗史占49%,输血史占43%,小/大手术史占40%,家庭HBV阳性患者占35%,街头理发师剃须32%,糖尿病占16%,纹身占11%,HCV合并感染7.41%,共用毒品注射器具占1.2%,HIV和tb合并感染占0%
{"title":"Prevalence of Hepatitis B in KPK Province Pakistan","authors":"","doi":"10.37605/njbs.v1i2.3","DOIUrl":"https://doi.org/10.37605/njbs.v1i2.3","url":null,"abstract":"Pakistan carries one of the world’s highest burdens of chronic hepatitis and mortality due to liver failure and hepatocellular carcinoma. In Pakistan about 10-12 million of the people are suffering from hepatitis B. World Health organization estimates that there are about 300 million of carriers of HBV all over the world. This study is conducted in the Khyber Teaching Hospital Peshawar. A total of 3,977 patients, belonging to different localities were screened for HBsAg by using ELISA (enzyme linked immunosorbent assay) and ICT (immune chromatographic technique). Out of 3,977 cases, 81(2.03%) were positive for HBV. Co-infection was found only in 6 patients. The common risk factors associated with HBV was found such that history of dental treatment was 70%, treatment from unqualified doctor 49%, history of blood transfusion 43%, history of minor/major surgery 40%, HBV positive patients in family 35%, shaving from street barbers 32%, diabetes 16%, tattooing 11%, HCV co- infection 7.41%, sharing of drug injecting equipment’s 1.2%, HIV and T.B co- infection was 0%","PeriodicalId":445719,"journal":{"name":"National Journal of Biological Sciences","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114793234","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
Variation of Hull Over Grain Weight Percentage of Rice (Oryza Sativa L.) From Pakistan 水稻(Oryza Sativa L.)壳重比的变异从巴基斯坦
Pub Date : 2020-12-16 DOI: 10.37605/njbs.v1i2.4
Rice (Oryza sativa L.) is an important cash crop in the world. Rice is 2 nd most important food and cash crop of Pakistan after wheat. Forty accessions consisting of 20 conventional varieties and 20 New Plant Type (NPT) lines were used to determine percentage of hull over grain weight. The percentage of hull over grain weight was significantly different among varieties. The hull over grain weight percentage for varieties ranged from 10.5% to 30%. The percentage of hull /grain weight varied from 7.5% to 27.33 % for NPT lines and there was significant difference among NPT lines for this trait. This trait can be used in breeding program in order to increase rice production through increasing the milling efficiency by having thinner hull.
水稻(Oryza sativa L.)是世界上重要的经济作物。水稻是巴基斯坦仅次于小麦的第二大粮食和经济作物。采用20个常规品种和20个新株系(NPT)组成的40份材料测定了籽粒比。籽粒比籽粒重在品种间差异显著。品种的壳粒比为10.5% ~ 30%。皮粒比在7.5% ~ 27.33%之间,不同品系间差异显著。该性状可用于水稻育种,通过薄壳提高碾磨效率,提高水稻产量。
{"title":"Variation of Hull Over Grain Weight Percentage of Rice (Oryza Sativa L.) From Pakistan","authors":"","doi":"10.37605/njbs.v1i2.4","DOIUrl":"https://doi.org/10.37605/njbs.v1i2.4","url":null,"abstract":"Rice (Oryza sativa L.) is an important cash crop in the world. Rice is 2 nd most important food and cash crop of Pakistan after wheat. Forty accessions consisting of 20 conventional varieties and 20 New Plant Type (NPT) lines were used to determine percentage of hull over grain weight. The percentage of hull over grain weight was significantly different among varieties. The hull over grain weight percentage for varieties ranged from 10.5% to 30%. The percentage of hull /grain weight varied from 7.5% to 27.33 % for NPT lines and there was significant difference among NPT lines for this trait. This trait can be used in breeding program in order to increase rice production through increasing the milling efficiency by having thinner hull.","PeriodicalId":445719,"journal":{"name":"National Journal of Biological Sciences","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115571203","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
An Overview of Aflatoxins in the Developing World Regarding Food Security and Safety 黄曲霉毒素在发展中国家食品安全和安全方面的概述
Pub Date : 2020-12-16 DOI: 10.37605/njbs.v1i2.2
Food security and food safety are alarming issues in the developing world. Aflatoxins are among the naturally occurring poisons that are fatal for all animals due to their carcinogenic potential. Recent studies have shown the correlation of these toxins with food chains. This correlation has been found to be more significant in developing countries as compared to developed countries. Since the discovery of aflatoxins, great efforts have been exerted to investigate their biochemical nature, biosynthesis, mode of pathogenesis and health-associated effects. However, no sound remedy has yet been designed to completely control their development. The main purpose of this review is to consolidate the findings of published studies on the status of aflatoxins in developing countries, including recent perspectives in this field. The areas that need to be elucidated further are also highlighted
粮食安全和食品安全是发展中国家令人担忧的问题。黄曲霉毒素是自然产生的毒素之一,由于其潜在的致癌性,对所有动物都是致命的。最近的研究表明,这些毒素与食物链有关。与发达国家相比,这种相关性在发展中国家更为显著。自黄曲霉毒素被发现以来,人们对其生物化学性质、生物合成、发病方式和对健康的影响进行了大量的研究。然而,目前还没有设计出有效的补救措施来完全控制它们的发展。本综述的主要目的是巩固已发表的关于黄曲霉毒素在发展中国家现状的研究结果,包括该领域的最新观点。还强调了需要进一步阐明的领域
{"title":"An Overview of Aflatoxins in the Developing World Regarding Food Security and Safety","authors":"","doi":"10.37605/njbs.v1i2.2","DOIUrl":"https://doi.org/10.37605/njbs.v1i2.2","url":null,"abstract":"Food security and food safety are alarming issues in the developing world. Aflatoxins are among the naturally occurring poisons that are fatal for all animals due to their carcinogenic potential. Recent studies have shown the correlation of these toxins with food chains. This correlation has been found to be more significant in developing countries as compared to developed countries. Since the discovery of aflatoxins, great efforts have been exerted to investigate their biochemical nature, biosynthesis, mode of pathogenesis and health-associated effects. However, no sound remedy has yet been designed to completely control their development. The main purpose of this review is to consolidate the findings of published studies on the status of aflatoxins in developing countries, including recent perspectives in this field. The areas that need to be elucidated further are also highlighted","PeriodicalId":445719,"journal":{"name":"National Journal of Biological Sciences","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121675098","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
An Overview of Aflat Neurological Diseases and Drug Discovery: An Overview 平坦神经系统疾病和药物发现综述
Pub Date : 2020-12-16 DOI: 10.37605/njbs.v1i2.5
Hundreds of millions of people worldwide are af ected by neurological disorders. More than 50 million people have epilepsy; 7.7 million new dementia cases are reported every year worldwide. Over the last decade, fewer new drugs for nervous system disorders have garnered approval in comparison to other therapeutic areas. An important step of the drug development process is the lead identification and lead optimization to develop the best pharmacokinetic profile for the desired formulation and preferred route of administration. It requires Quantitative Structure-Activity Relationship (QSAR) to understand which modifications will best enhance af inity. Computer-aided molecular design (CAMD) is used in innovative strategies assisting in improving the binding af inities of drug candidates to specific receptors. Single-photon emission computed tomography (SPECT) and positron emission tomography (PET) have proven to be useful in phases ranging from preclinical development to the initial stages of clinical testing. The high sensitivity of these imaging modalities makes them particularly suited for exploratory investigational new drug development.
全世界有数亿人受到神经系统疾病的影响。5000多万人患有癫痫;全世界每年报告770万例新的痴呆症病例。在过去十年中,与其他治疗领域相比,神经系统疾病的新药获得批准的较少。药物开发过程中的一个重要步骤是先导物识别和先导物优化,从而为所需的配方和首选给药途径开发最佳药代动力学特征。它需要定量构效关系(Quantitative Structure-Activity Relationship, QSAR)来了解哪些修饰能最好地增强亲和力。计算机辅助分子设计(CAMD)被用于创新策略,以帮助提高候选药物与特定受体的结合亲和力。单光子发射计算机断层扫描(SPECT)和正电子发射断层扫描(PET)已被证明在从临床前开发到临床测试的初始阶段都是有用的。这些成像方式的高灵敏度使它们特别适合于探索性研究新药开发。
{"title":"An Overview of Aflat Neurological Diseases and Drug Discovery: An Overview","authors":"","doi":"10.37605/njbs.v1i2.5","DOIUrl":"https://doi.org/10.37605/njbs.v1i2.5","url":null,"abstract":"Hundreds of millions of people worldwide are af ected by neurological disorders. More than 50 million people have epilepsy; 7.7 million new dementia cases are reported every year worldwide. Over the last decade, fewer new drugs for nervous system disorders have garnered approval in comparison to other therapeutic areas. An important step of the drug development process is the lead identification and lead optimization to develop the best pharmacokinetic profile for the desired formulation and preferred route of administration. It requires Quantitative Structure-Activity Relationship (QSAR) to understand which modifications will best enhance af inity. Computer-aided molecular design (CAMD) is used in innovative strategies assisting in improving the binding af inities of drug candidates to specific receptors. Single-photon emission computed tomography (SPECT) and positron emission tomography (PET) have proven to be useful in phases ranging from preclinical development to the initial stages of clinical testing. The high sensitivity of these imaging modalities makes them particularly suited for exploratory investigational new drug development.","PeriodicalId":445719,"journal":{"name":"National Journal of Biological Sciences","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127688393","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
Bioethanol Production from Sugarcane Molasses an Industrial Waste Product 利用工业废料甘蔗糖蜜生产生物乙醇
Pub Date : 2020-12-16 DOI: 10.37605/njbs.v1i2.1
Due to recent increase in price hike of petroleum products, different efforts are being done throughout the world in search of an alternative source of fuel. For this reason, various agricultural countries are trying to produce their own fuel from plant based materials. Different types of biofuels like bioethanol, biodiesel, biohydrogen, biogas etc. are being investigated throughout the world. The type of the biofuel being produced depends upon the availability of the substrate. This review mainly focused on sugar industry waste called molasses, which is rich in fermentable sugars. The easiest form of the fuel that can be produced from sugar rich substrate is bioethanol, thus the review mainly focused on different methods of bioethanol production from molasses and the challenges related to this process. There are several factors that can affect the production of bioethanol that includes the type of substrate, the fermenting microorganisms, optimization of physicochemical parameters like pH, temperature, and the nutrient requirements of fermenting microbes for the conversion of sugar rich substrate into bioethanol. Moreover, the current scenario of the utilization of bioethanol as a fuel in various countries throughout the world was also discussed in this review.
由于最近石油产品价格的上涨,世界各地都在努力寻找替代燃料来源。由于这个原因,许多农业国家正在尝试用植物为基础的材料生产自己的燃料。世界各地正在研究不同类型的生物燃料,如生物乙醇、生物柴油、生物氢、沼气等。所生产的生物燃料的类型取决于底物的可用性。本文主要综述了糖蜜这种富含可发酵糖的制糖工业废弃物。从富含糖的底物中生产生物乙醇是最简单的燃料形式,因此本文主要介绍了从糖蜜中生产生物乙醇的不同方法以及与此过程相关的挑战。有几个因素可以影响生物乙醇的生产,包括底物的类型、发酵微生物、理化参数(如pH值、温度)的优化,以及将富含糖的底物转化为生物乙醇的发酵微生物的营养需求。此外,本文还讨论了目前世界各国生物乙醇作为燃料的使用情况。
{"title":"Bioethanol Production from Sugarcane Molasses an Industrial Waste Product","authors":"","doi":"10.37605/njbs.v1i2.1","DOIUrl":"https://doi.org/10.37605/njbs.v1i2.1","url":null,"abstract":"Due to recent increase in price hike of petroleum products, different efforts are being done throughout the world in search of an alternative source of fuel. For this reason, various agricultural countries are trying to produce their own fuel from plant based materials. Different types of biofuels like bioethanol, biodiesel, biohydrogen, biogas etc. are being investigated throughout the world. The type of the biofuel being produced depends upon the availability of the substrate. This review mainly focused on sugar industry waste called molasses, which is rich in fermentable sugars. The easiest form of the fuel that can be produced from sugar rich substrate is bioethanol, thus the review mainly focused on different methods of bioethanol production from molasses and the challenges related to this process. There are several factors that can affect the production of bioethanol that includes the type of substrate, the fermenting microorganisms, optimization of physicochemical parameters like pH, temperature, and the nutrient requirements of fermenting microbes for the conversion of sugar rich substrate into bioethanol. Moreover, the current scenario of the utilization of bioethanol as a fuel in various countries throughout the world was also discussed in this review.","PeriodicalId":445719,"journal":{"name":"National Journal of Biological Sciences","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121058572","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
Amylase, Column Chromatography, Ammonium sulphate precipitation, Thermophiles, Enzymes 淀粉酶,柱层析,硫酸铵沉淀,嗜热菌,酶
Pub Date : 2020-06-24 DOI: 10.37605/njbs.v1i1.5
{"title":"Amylase, Column Chromatography, Ammonium sulphate precipitation, Thermophiles, Enzymes","authors":"","doi":"10.37605/njbs.v1i1.5","DOIUrl":"https://doi.org/10.37605/njbs.v1i1.5","url":null,"abstract":"","PeriodicalId":445719,"journal":{"name":"National Journal of Biological Sciences","volume":"210 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114408250","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
期刊
National Journal of Biological Sciences
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1