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Clean and Healthy Lifestyle Behaviors and Healthy Housing Influenced the Incident of Acute Respiratory Infection in Childhood 清洁健康的生活方式和健康的住房对儿童急性呼吸道感染事件的影响
Q3 Agricultural and Biological Sciences Pub Date : 2020-10-31 DOI: 10.3329/BJM.V32I1.51090
Muhammad Kautsar, N. Anggraeni, Vivi Permata Sari, Ribka B. A Mboe, Anindya Widyasari, Zahwa Afdhilani Azwan, Athiyah Amatillah, Priscillia Ivana Jie, Sulistiawati, R. Bambang
Introduction: Based on preliminary surveys in this study, it was found 86.7% of respondents suffered from accute respiratory infection experienced 4 times reinfection within 3 months and 50% of respondents rarely consumed balanced nutritious food. Aims: to find the correlation between clean and healthy lifestyle behaviours, healthy housing and the frequency of accute respiratory infection in children under the age of 1-4 years. Method: a cross-sectional study was used by involving mothers or caregivers with infants aged 1-4 years in Malang Regency. A questionnaire was applied as research instrument. Data obtained were conducted by a nonparametric contingency coefficient test with IBM SPSS v17. Result: Statistical analysis shows that there is a significant correlation between family members who smoke (p-value=0.021) and the level of home density (p-value=0.03) with the frequency of acute respiratory tract infections in toddlers. While the relationship of other variables such as the sex of children under five (p-value=0.799), clean and healthy lifestyle behaviour: delivery at primary health care (p-value=0.084), exclusive breastfeeding(p-value=0.940), routinely visiting Integrated Healthcare Center (p-value=0.396), hand washing behaviour (p-value=0.523), consuming healthy food (p-value=0.247), and infant’s activity(p-value=0.096), healthy housing: ventilation (p-value=0.396) and lighting (p-value=0.767) have no a significant correlation with incident of accute respiratory infection in infants. Conclusion: There is a correlation between family members who smoke and the level of home density with the frequency of accute respiratory infection in children under the age of 1-4 years.
引言:根据本研究的初步调查,86.7%的患者在3个月内再次感染4次,50%的患者很少食用均衡营养的食物。目的:了解1-4岁以下儿童清洁健康的生活方式行为、健康的住房与累积呼吸道感染频率之间的相关性。方法:采用横断面研究,涉及马朗县1-4岁婴儿的母亲或照顾者。采用问卷调查作为研究工具。数据采用IBM SPSS v17进行非参数列联系数检验。结果:统计分析表明,吸烟的家庭成员(p值=0.021)和家庭密度水平(p值=0.03)与幼儿急性呼吸道感染的频率之间存在显著相关性。而其他变量的关系,如五岁以下儿童的性别(p值=0.799)、清洁健康的生活方式行为:初级保健分娩(p值=0.084)、纯母乳喂养(p值0.940)、定期访问综合保健中心(p值0.396)、洗手行为(p值0.523)、食用健康食品(p值0.247),婴儿活动(p值=0.096)、健康住房:通风(p值=0.396)和照明(p值0.767)与婴儿急性呼吸道感染事件没有显著相关性。结论:1-4岁以下儿童吸烟家庭成员、家庭密度水平与累积性呼吸道感染的发生率存在相关性。
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引用次数: 0
Sustainable strategy of charcoal (Panglong Arang) management in the Bengkalis Regency 在Bengkalis摄政木炭(Panglong Arang)管理的可持续战略
Q3 Agricultural and Biological Sciences Pub Date : 2018-11-01 DOI: 10.4172/2161-0525.1000602
M. Genta, U. Tang, K. Anwar, S. Wahyuni, S. Syahril
Background and Purpose: Charcoal is a residue that occurs from the results of decomposition of wood due to heat when most of the chemical components are carbon. One method of making wood charcoal is to use a stove. Charcoal is an important factor in determining the sustainability of the lives of surrounding communities that have long been running. Therefore the purpose of this study is to create a strategy based on the SWOT analysis to see if the charcoal business using mangrove forests can proceed or not. Materials and Methods: Analysis of sustainable development strategies using SWOT Analysis which is one of the analyses used to formulate a strategy in an area of ​​development. This analysis consists of 4 basic elements, namely strengths, weaknesses, opportunities and threats. These four elements come from two main factors: internal factors (strengths and weaknesses) and external factors (opportunities and threats). While the stages in the SWOT analysis. Results: Analysis of public perception of the existence of charcoal trading business in the Bengkalis District gave a “Good response” with a score of 2.66. These results illustrate that the existence of a charcoal trading business does not provide a bad impact as long as it is in a location around a mangrove forest. The results obtained in the SWOT matrix diagram are in the fourth quadrant, show that the priority of the strategy is the Strength (S) and Threats (T) strategies. The components in these two strategies need to get more emphasis and attention so that the existence of a charcoal trading business can be sustainable. Conclusion: The public perception of the charcoal long-standing regulation in the “Bengkalis Regency” is in the “Good category” which is a prerequisite in the development of continuous charcoal. The strategy for sustainable charcoal development is in quadrant IV, namely the S-T strategy.
背景和目的:木炭是木材受热分解后产生的一种残留物,其中大部分化学成分是碳。制作木炭的一种方法是使用炉子。木炭是决定长期运行的周围社区生活可持续性的重要因素。因此,本研究的目的是创建一个基于SWOT分析的策略,看看使用红树林的木炭业务是否可以进行。材料和方法:可持续发展战略的分析使用SWOT分析,这是一种分析,用于制定一个发展领域的战略。这种分析包括4个基本要素,即优势,劣势,机会和威胁。这四个要素来自两个主要因素:内部因素(优势和劣势)和外部因素(机会和威胁)。而SWOT分析的阶段。结果:本卡利斯地区公众对木炭交易业务存在的认知分析给出了“良好”的反应,得分为2.66。这些结果表明,只要是在红树林附近,木炭交易业务的存在就不会产生不良影响。在SWOT矩阵图中得到的结果在第四象限,表明战略的优先级是优势(S)和威胁(T)战略。这两个战略的组成部分需要得到更多的重视和关注,以便木炭贸易业务的存在可以持续下去。结论:公众对“Bengkalis摄政”木炭长期调控的认知处于“良好”类别,这是持续木炭发展的先决条件。木炭可持续发展战略在第四象限,即S-T战略。
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引用次数: 1
An investigation on determining heavy metal accumulation in plants growing at Kumalar Mountain in Turkey 土耳其库马拉尔山植物重金属累积量测定的调查
Q3 Agricultural and Biological Sciences Pub Date : 2016-07-01 DOI: 10.5053/ejobios.2016.10.0.3
I. Şahin, E. Akçi̇çek, Özal Güner, Y. Dogan, I. Ugulu
Background: Biomonitoring approach has been widely used to evaluate the environmental quality and detect the presence of inorganic and organic pollutants that are not routinely measured by conventional monitoring in the air. Material and Methods: Twenty-five plant samples were obtained from twenty-three species used as biomonitors and found at two different altitudes in Kumalar Mountain with the aim of examining the levels of heavy metals. The concentrations of these elements were determined by inductively coupled plasma optical emission spectrometry. The levels of the heavy metals Al, Ba, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Sn and Zn (pg g 1, dry weight) in plant samples supplied from different altitudes of Kumalar Mountain were assessed. Results: As a result of this study, the following mean concentrations were determined at different altitudes of Kumalar Mountain: The contents of Al, Ba, Cu, Fe, Mn and Zn (pg g 1, dry weight) ranged from 51.902 to 2960.650, 4.247 to 194.646, 0.927 to 21.024,113.938 to 4289.115, 26.832 to 635.724 and 4.424 to 75.822, respectively. No Cd, Cr, Pb, Ni and Sn values were determined in the samples collected from both heights. Conclusions: The accumulation of heavy metals such as iron (Fe) in some plant samples was found to be significantly higher than the normal accumulation levels.
背景:生物监测方法已被广泛用于环境质量评价和检测空气中常规监测无法测量的无机和有机污染物的存在。材料和方法:从库马拉尔山两个不同海拔高度的23种植物中获得25种植物样本,用作生物监测仪,目的是检查重金属水平。用电感耦合等离子体发射光谱法测定了这些元素的浓度。测定了库马拉尔山不同海拔植物样品中重金属Al、Ba、Cd、Cr、Cu、Fe、Mn、Ni、Pb、Sn和Zn (pg g 1,干重)的含量。结果:库木拉尔山不同海拔地区的平均浓度为:Al、Ba、Cu、Fe、Mn和Zn (pg g 1,干重)含量分别为51.902 ~ 2960.650、4.247 ~ 194.646、0.927 ~ 21.024、113.938 ~ 4289.115、26.832 ~ 635.724和4.424 ~ 75.822。从两个高度采集的样品均未测定Cd、Cr、Pb、Ni和Sn值。结论:某些植物样品中铁(Fe)等重金属的积累明显高于正常积累水平。
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引用次数: 16
Histological evidence of the heart and ovarian vessels in the short mackerel, Rastrelliger brachysoma 短鲭鱼心脏和卵巢血管的组织学证据
Q3 Agricultural and Biological Sciences Pub Date : 2016-07-01 DOI: 10.5053/EJOBIOS.2016.10.0.2
S. Senarat, W. Jiraungkoorskul, J. Kettratad
Background: Limited research has been reported in the basic information about the structural organizations of heart and ovarian vessel. Hence, produced herein is the first report on the heart, aortas, ovarian blood vessel and blood cells of the short mackerel Rastrelliger brachysoma. Material and Methods: All fish were collected in the upper Gulf of Thailand and then they were elucidated under histological techniques. Results: The results revealed that the heart structure contained four parts including the sinus venosus, the atrium, the ventricle and the bulbus arteriosus. Several vessels including arteriole, capillary, small vein and lymphatic vessel were also commonly seen among oogenic stages of the R. brachysoma. Within capillaries, according to ultrastructural levels, various blood cells including red blood cell, eosinophil and lymphocyte were also seen. The systematic ovarian vessels especially arterial system could be classified into two patterns according to different seasons. During the nonbreeding season, the arteriole at each ovigerous fold protruded in to the ovigerous fold and gradually changed into numerous capillaries. All vessel types increased in both amount and size, especially in capillaries, where their dilation contained various red blood cells that appeared closely around the vitellogenic stage in the breeding season. Nevertheless, the systematic venous vessel was not easily observed in ovarian tissue under the light microscopic analysis. Conclusions: The hearth with consisting of four chambers including the sinus venosus, the soft atrium, the muscular ventricle and the bulbus arteriosus as well as the ovarian vessels throughout the systematic ovarian vessels were present in the R. brachysoma.
背景:关于心脏和卵巢血管结构组织的基本信息报道有限。因此,本文首次报道了短鲭鱼的心脏、主动脉、卵巢血管和血细胞。材料与方法:在泰国上海湾采集所有鱼类,并用组织学技术对其进行鉴定。结果:心脏结构包括静脉窦、心房、心室和动脉球四个部分。在短鼻毛瘤卵源期,还常见到小动脉、毛细血管、小静脉和淋巴管等血管。毛细血管内,根据超微结构水平,还可见各种血细胞,包括红细胞、嗜酸性粒细胞和淋巴细胞。卵巢系统血管特别是动脉系统根据季节的不同可分为两种类型。在非繁殖期,每条胚乳褶皱处的细动脉都向胚乳褶皱中突入,并逐渐变成众多的毛细血管。所有血管类型的数量和大小都增加了,尤其是毛细血管,在繁殖季节卵黄形成阶段,毛细血管的扩张包含了各种红细胞。然而,卵巢组织在光镜下不易观察到系统静脉血管。结论:短瘤鼠存在由静脉窦、软心房、肌室、动脉球等4个腔室组成的心房以及贯穿系统卵巢血管的卵巢血管。
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引用次数: 1
Protective effects of extra virgin olive oil against paracetamol-induced liver toxicity in Wistar albino rats 特级初榨橄榄油对扑热息痛引起的Wistar白化大鼠肝毒性的保护作用
Q3 Agricultural and Biological Sciences Pub Date : 2016-07-01 DOI: 10.5053/EJOBIOS.2016.10.0.4
L. Khayyat
Background: Paracetamol is an extensively used analgesic and antipyretic drug which Is widely available without a prescription. An overdose of paracetamol can cause liver damage. Extra virgin olive oil (EVOO) Is an organic product which has an antioxidant effect against liver toxicity. The aim of the present study was to Investigate the protective effect of EVOO against the hepatotoxlclty Induced by an overdose of paracetamol In the liver of rats. Material and Methods: Forty adult male rats were used In this study, and were divided Into four groups often rats. Group 1: rats were given distilled water orally and were considered the control group; group 2: rats were given paracetamol orally at a dally dose of 650 mg/kg body weight; group 3: rats were given EVOO orally at a dally dose of 2 mL/kg body weight; group 4: rats were given paracetamol orally (650 mg/kg) and EVOO (2 mL/kg body weight). Blood and liver samples were collected after 15 days of treatment and were prepared for histological, ultrastructural and physiological analyses. Results: Several hlstopathologlcal and ultrastructural changes were observed In group 2, In which rats received paracetamol only. Including cell degeneration, lipid droplets, pyknotlc nuclei, disrupted rER, proliferated sER, changes In mitochondrial structure and congested and expanded blood vessels. Moreover, a significant Increase (p Improvement In histology, ultrastructure of hepatocytes and blood parameters. A significant decrease (p Conclusions: The results obtained In this study Indicated that EVOO has a protective effect against paracetamol overdose-induced hepatotoxlclty.
背景:扑热息痛是一种广泛使用的镇痛解热药物,无需处方即可获得。过量服用扑热息痛会导致肝损伤。特级初榨橄榄油(EVOO)是一种有机产品,对肝脏毒性具有抗氧化作用。本研究旨在探讨EVOO对扑热息痛致大鼠肝脏损伤的保护作用。材料与方法:选用成年雄性大鼠40只,分为4组。第一组:大鼠口服蒸馏水,作为对照组;2组:大鼠口服扑热息痛,每日剂量650 mg/kg体重;第三组:大鼠口服EVOO,每日剂量为2 mL/kg体重;4组:大鼠口服扑热息痛(650 mg/kg)和EVOO (2 mL/kg体重)。治疗15 d后采集血液和肝脏标本,进行组织学、超微结构和生理分析。结果:仅给予扑热息痛的第2组大鼠观察到一些组织病理学和超微结构的改变。包括细胞变性、脂滴、核收缩、内质网破坏、sER增生、线粒体结构改变和血管充血扩张。此外,肝细胞的组织学、超微结构和血液参数均有明显改善。结论:本研究结果表明,EVOO对扑热息痛过量引起的肝毒性有保护作用。
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引用次数: 4
Diversity and distribution of macrofungi in the Eastern Himalayan ecosystem 喜马拉雅东部生态系统中大型真菌的多样性和分布
Q3 Agricultural and Biological Sciences Pub Date : 2016-07-01 DOI: 10.5053/EJOBIOS.2016.10.0.L
P. Pradhan, A. Dutta, S. Paloi, A. Roy, K. Acharya
Background: Eastern Himalayas have rich biodiversity but are threatened by anthropogenic activities and periodic natural calamities. The present investigation focused on the cryptogamic group of macrofungi in the Darjeeling Himalayas which are extremely diverse and ecologically significant, but have received very little attention from a conservation perspective. Material and Methods: Investigations were conducted during June-September of 2013-2014 in the Darjeeling district of West Bengal, India, wherein, local macrofungi were sampled in mixed to monoculture forests using 50 random transects 100x2 m. Fruit bodies were studied, collected, identified in the laboratory and deposited at Calcutta University Herbarium. Sampling units were georeferenced and physico-climatic factors were derived from the WORLDCLIM database. Results: The macrofungi belonged to 98 species representing 72 genera and 47 families; 58.16% were saprotrophs, 17.34% were ectomycorrhizal and 10.2% were parasitic. The most species-rich families were Russulaceae with 9 Russula species followed by Marasmiaceae with 4 Marasmius species and Coprinaceae with 3 Coprinus species. Most of the ectomycorrhizal macrofungi were hosted by natural stands of Quercus, Lithocarpus and Betula. The only species with zooparasitic capability were Cordyceps nutans and C. militaris. The relative abundance of only 6 saprotrophs communicatively accounted for 52.84% of the total abundance. Conclusions: The findings showed that this region is rich in macrofungal diversity intricately linked to the functioning of the local ecosystem. However, a high proportion of saprotrophs compared to ectomycorrhizal species suggests disturbance and degradation of regional forests. Mycofloristically important localities like Lolaygaon, Sonada, and Lameydhura in the Darjeeling district should be prioritized for further studies and future conservation action.
背景:东喜马拉雅地区生物多样性丰富,但受到人为活动和周期性自然灾害的威胁。目前的研究主要集中在大吉岭喜马拉雅地区的隐生真菌类群,这类真菌种类繁多,具有重要的生态意义,但从保护的角度来看却很少受到关注。材料与方法:于2013-2014年6 - 9月在印度西孟加拉邦大吉岭地区进行调查,在混交林和单作林中随机取样50个样带,取样面积为100x2 m。果体在实验室进行研究、收集和鉴定,并存放在加尔各答大学植物标本室。采样单位以地理为参考,物理气候因子来源于WORLDCLIM数据库。结果:大型真菌隶属47科72属98种;腐养菌占58.16%,外菌根占17.34%,寄生占10.2%。种数最多的科是Russulaceae(9种),其次是Marasmiaceae(4种)和Coprinaceae(3种)。外生菌根大型真菌主要寄生于栎、石栎和桦树的天然林分。唯一具有动物寄生能力的种是冬虫夏草和蛹虫草。仅6种腐养菌的相对丰度占总丰度的52.84%。结论:研究结果表明,该地区具有丰富的大型真菌多样性,与当地生态系统的功能密切相关。然而,与外生菌根物种相比,腐生菌的比例较高,表明区域森林受到干扰和退化。在大吉岭地区的罗拉岗、索纳达和拉梅杜拉等真菌区系的重要地点应优先进行进一步的研究和保护。
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引用次数: 4
Genetic diversity in Iranian populations of Togninia minima, one of the causal agents of leaf stripe disease on grapevines 葡萄叶条病病原之一的伊朗小托尼亚种群的遗传多样性
Q3 Agricultural and Biological Sciences Pub Date : 2016-07-01 DOI: 10.5053/EJOBIOS.2016.10.0.5
M. Arzanlou, A. Narmani
Background: Togninia minima Is the main fungal species commonly associated with grapevine leaf stripe disease (GLSD), worldwide. This species Is best known by Its conldlal state In nature. No data are available on the Incidence of an active sexual cycle within the populations of this species In many grapevine producing countries Including Iran. Material and Methods: Genetic variability within and among the populations of T. minima was analyzed using M13 DNA markers. Fifty one T. minima Isolates originating from symptomatic grapevines In north and northwestern regions of Iran were subjected to polymorphism analysis using M13 markers, namely M13mp 18F, M13mp 18R and M13 mlnlsatelllte. Correlation between the genetic similarity, the geographic origin and mating Identity of the Isolates was evaluated. Results: M13 mlnlsatelllte produced the 38 polymorphic bands, while M13 mp 18F and M13 mp 18R yielded 27 and 26 bands, respectively. Significant genetic distances were found among the Isolates from the same location and different parts of the country. No correlation was found among the genetic similarity groups with geographic origin and mating Identity of the Isolates. Isolates with different mating Identity sometimes clustered In the same group. Conclusion: Our data support the presence of a sexual cycle and the ongoing recombination within populations of the species In the sampled areas.
背景:小togniniia minima是全球范围内与葡萄叶条病(GLSD)相关的主要真菌种类。这个物种以其在自然界的休眠状态而闻名。在包括伊朗在内的许多葡萄生产国,尚无关于该物种种群内有性周期活跃发生率的数据。材料与方法:利用M13 DNA标记分析了小田鼠居群内和居群间的遗传变异。利用M13标记M13mp 18F、M13mp 18R和m13mlnlsatellite对51株产自伊朗北部和西北部有症状葡萄植株的小恙虫进行多态性分析。对分离物的遗传相似性、地理来源和交配特性进行了相关性分析。结果:M13 mlnlsatellite产生38个多态性条带,M13 mp 18F和M13 mp 18R分别产生27和26个多态性条带。来自同一地点和不同地区的分离株之间存在显著的遗传距离。遗传相似性类群与分离株的地理来源和交配身份没有相关性。具有不同交配身份的分离株有时聚集在同一群中。结论:我们的数据支持在采样地区的物种种群中存在性循环和持续的重组。
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引用次数: 1
Morpho-physiological and phytochemical traits of gazania (Gazania rigens) affected by foliar application of bio-stimulants 叶面施用生物刺激剂对gazania (gazania regens)形态生理和植物化学性状的影响
Q3 Agricultural and Biological Sciences Pub Date : 2015-07-01 DOI: 10.5053/EJOBIOS.2015.9.0.3
Amir Foroutan Nia, Sanaz Bahman, H. Badi, A. Mehrafarin, M. Labbafi
Background: Gazania (Gazania rigens), a member of the Asteraceae family, is an ornamental plant that is cultivated on a large scale in gardens and landscapes. Material and Methods: : This experiment was carried out to evaluate the effects of bio-stimulants compounds on morpho-physiological and phytochemical traits of gazania on the basis of randomized complete blocks designed (RCBD) with three replications. The treatments included biostimulants of aminolforte, kadostim, fosnutren, humiforte (each of them at 2 and 4 L.ha-1), and control treatment (foliar spray with distillated water). Results: The effects of treatments were significant (pN0.01) on all of the traits except for the number of leaves and capitula per plant, and capitula diameter. The maximum amount of the plant height and total dry weight was obtained in the treatment of kadostim at 2 L.ha-1. The largest collar diameter of the stem and total fresh weight was observed in the treatment of aminolforte at 4 L.ha-1. The greatest diameter of the flower and stem was observed in the treatment of aminolforte and fosnutren at 2 L.ha-1, respectively. Also, the highest quantity of SPAD value, chlorophylls a and b, and total chlorophyll, carotenoids, and nitrogen content were related to the foliar application of aminolforte at 4 L.ha-1, but the highest percentage of potassium content was attained in humiforte treatment at 4 L.ha-1. In comparison, the least amount of all traits was observed in control treatment. Conclusions: The findings showed that the foliar applications of bio-stimulants based on bio-active amino acid compounds with a mixture of nutrients have positive effects on the growth, morphophysiological, and phytochemical traits of the gazania.
背景:Gazania (Gazania regens)是菊科植物,是园林和景观中大量种植的观赏植物。材料与方法:本试验采用随机完全区设计(RCBD),采用3个重复的方法,研究生物刺激物化合物对gazania形态生理和植物化学性状的影响。处理包括氨诺尔福特、卡多司汀、氟硝菊、腐植酸福特(剂量分别为2和4 L.ha-1)和对照处理(蒸馏水叶面喷施)。结果:除单株叶数、头状花序数和头状花序直径外,各处理对其他性状的影响均极显著(pN0.01)。kadostim处理的株高和总干重以2 L.ha-1处理最高。在4 L.ha-1的氨基forte处理下,茎颈直径和总鲜重最大。在2 L.ha-1的氨基甲酸酯和膦菊酯处理下,花和茎的直径最大。叶片SPAD值、叶绿素a、叶绿素b、总叶绿素、类胡萝卜素和氮素含量均与施氨复复处理(4 L.ha-1)有关,但钾含量百分比在施氨复复处理(4 L.ha-1)最高。相比之下,对照处理的所有性状数量最少。结论:在叶面施用以生物活性氨基酸化合物为基础的生物刺激剂,与多种营养物质混合使用,对gazania的生长、形态生理和植物化学性状有积极的影响。
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引用次数: 7
Optimization of an in vitro protocol for the production of ascorbic acid in Hibiscus cannabinus leaf-derived normal root cultures 大麻木槿叶源正常根培养中抗坏血酸体外生产方案的优化
Q3 Agricultural and Biological Sciences Pub Date : 2015-07-01 DOI: 10.5053/EJOBIOS.2015.9.0.5
Sandopu Sravan Kumar, P. Manoj, P. Giridhar
Background: Hibiscus cannabinus (kenaf) is cultivated in many parts of the world for its bast fibers that find extensive industrial applications. In the southern states of India, kenaf is a popular leafy vegetable. The leaves are rich in ascorbic acid. Material and Methods: The present study reports an efficiently optimized protocol for in vitro normal root cultures for the biomass establishment of kenaf and the production of substantial amounts of ascorbic acid. The explants prepared from cotyledonary leaves of 15 day old in vitro seedlings of kenaf were inoculated onto Murashige and Skoog (MS) basal medium supplemented with 0.5-3 mg/L indole-3-acetic acid (IAA) or indole-3-butyric acid (IBA) or naphthalene acetic acid (NAA) individually for root initiation. Results: MS medium containing 2 mg/L NAA provided the best response (100% of explants) with a root length of 12-14 cm. A light greenish friable callus was also obtained in most of the explants. Efficient root biomass and ascorbic acid production was evident upon sub-culturing ~1 cm length root segments onto MS liquid medium containing the same growth regulators regimen used for the initiation of roots. Root cultures showed maximum biomass by the eighth week (5.51 g/100 g fresh weight). Ascorbic acid production was maximal in the seventh week (48.43 mg/100 g fresh weight). Conclusions: This protocol will facilitate scale up studies for obtaining higher yields of ascorbic acid in vitro using kenaf root cultures on a commercial scale; it could also be used to investigate the kinetics of the ascorbic acid biosynthetic pathway.
背景:世界上许多地方都种植木槿大麻(红麻),因为它的韧皮纤维有广泛的工业应用。在印度南部各邦,红麻是一种受欢迎的叶菜。叶子富含抗坏血酸。材料和方法:本研究报道了一种有效的体外正常根培养方案,用于红麻生物量的建立和大量抗坏血酸的生产。将15日龄红麻离体苗子叶制备的外植体分别接种于添加0.5 ~ 3 mg/L吲哚-3-乙酸(IAA)或吲哚-3-丁酸(IBA)或萘乙酸(NAA)的Murashige和Skoog (MS)基础培养基上生根。结果:NAA含量为2 mg/L的MS培养基在根长为12 ~ 14 cm时的生根效果最好(100%)。大多数外植体均可获得淡绿色易碎愈伤组织。在MS液体培养基上继代培养~1 cm长的根段,其根生物量和抗坏血酸产量明显提高,培养基中含有用于根形成的生长调节剂。根培养在第8周生物量最大(5.51 g/100 g鲜重)。抗坏血酸产量在第7周达到最大值(48.43 mg/100 g鲜重)。结论:该方案将促进规模研究,以获得更高产量的体外抗坏血酸在商业规模上使用红麻根培养;它也可以用于研究抗坏血酸生物合成途径的动力学。
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引用次数: 4
Characterization of cellulase enzyme produced by Chaetomium sp. isolated from books and archives 从文献和文献中分离的毛藻生产纤维素酶的特性
Q3 Agricultural and Biological Sciences Pub Date : 2015-07-01 DOI: 10.5053/EJOBIOS.2015.9.0.7
Moza AL-KHAROUSI, N. Sivakumar, A. Elshafie
Background: Cellulase is an important industrial enzyme used to degrade cellulosic biomass. The demand for cellulase enzyme is continuously increasing because of its applications in various industries. Hence, screening of cellulase producing microorganisms from different sources has gained significant importance. Material and Methods: In this study, fungi isolated from books and archives were screened for their cellulase producing abilities. Four different fungi were isolated from books and archives using potato dextrose agar. Screening of these isolates for cellulase production was carried out using carboxymethyl cellulose broth. The most efficient fungus was subjected to cellulase fermentation and enzymes produced were purified and partially characterized. Results: Four different fungi, Chaetomium sp., Aspergillus niger, Aspergillus nidulans and Penicillium sp., were isolated from books and archives. All the isolates were tested for their ability to produce cellulase enzyme. During the primary screening Chaetomium sp. showed good growth and higher cellulase activity (155.3±25.6 U/mL) in carboxymethyl cellulose medium than the other fungi. The cellulase fermentation study was conducted with Chaetomium sp. using carboxymethyl cellulose as a substrate. During the stationary phase (144 h) of the growth, the cellulase activity of Chaetomium sp. was significantly high. The maximum mycelial weight of this fungi was obtained at 168 h. Viscosity of the Chaetomium sp. inoculated fermentation medium continuously decreased until 144 h because of the degradation of carboxymethyl cellulose. During cellulase fermentation, pH increased from the initial neutral pH to 8.5. Purified cellulase showed a specific activity of 7.3 U/mg. It exhibited maximum activity at 20°C and was stable between pH 5 and 9. Conclusions: Books and archives could be a good source for the isolation of cellulase producing fungi.
背景:纤维素酶是一种重要的用于降解纤维素生物质的工业酶。由于纤维素酶在各行各业的应用,对其需求量不断增加。因此,从不同来源筛选产生纤维素酶的微生物具有重要意义。材料和方法:在本研究中,对从书籍和档案中分离的真菌进行了纤维素酶生产能力的筛选。利用马铃薯葡萄糖琼脂从书籍和档案中分离出四种不同的真菌。利用羧甲基纤维素肉汤对这些分离菌株进行了纤维素酶生产筛选。对效率最高的真菌进行纤维素酶发酵,并对所产生的酶进行纯化和部分表征。结果:从文献资料中分离到毛菌、黑曲霉、灰曲霉和青霉4种不同的真菌。对所有菌株进行了产纤维素酶能力的测试。初步筛选毛毛菌在羧甲基纤维素培养基中生长良好,纤维素酶活性(155.3±25.6 U/mL)高于其他真菌。以毛藻为原料,以羧甲基纤维素为底物进行纤维素酶发酵研究。在生长的固定阶段(144 h),毛藻的纤维素酶活性显著提高。该菌菌丝体质量在168 h时达到最大值。接种毛毛菌发酵培养基的粘度持续下降,直至144 h,因为羧甲基纤维素的降解。在纤维素酶发酵过程中,pH由初始的中性pH增加到8.5。纯化后的纤维素酶比活性为7.3 U/mg。在20℃时活性最高,pH值在5 ~ 9之间稳定。结论:文献资料是分离产纤维素酶真菌的良好资料来源。
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引用次数: 13
期刊
Eurasian Journal of Biosciences
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