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Bacteriological Assessment of Automated Teller and Point of Sales Machine User Interface in Uyo Metropolis, Nigeria 尼日利亚乌约市自动柜员机和销售点机用户界面的细菌学评估
Pub Date : 2021-07-26 DOI: 10.9734/jabb/2021/v24i630220
O. John, Christiana E. Asuquo, M. M. Akpan
The Automated Teller Machine (ATM) and Point of Sales (POS) machine user interface of different banks, schools, hospitals, restaurants/eateries, shopping malls and petrol/gas stations in Uyo metropolis were bacteriologically assessed in the dry and wet seasons using cultural technique. The result of fomites key pads indicate total heterotrophic bacteria counts (THBC) was in the order: Banks > Hospitals > Schools > Petrol/Gas stations > shopping malls > Restaurants/Eateries in both seasons. There was an increase in the bacterial counts of the fomites from all locations in the wet season compared to the dry season and the difference significant (p = 0.05). The THBC from ATMs in banks, hospitals and schools ranged from 5.6 ± 0.1 to 7.8 ± 0.6 Log₁₀CFU/cm2 and from POS 3.4 ± 0.3 to 5.0 ± 0.2 Log₁₀CFU/cm2) for Petrol/Gas stations, shopping malls and Restaurants/Eateries in the wet season. The dry season revealed THBC range of 4.1± 0.6 to 6.4 ± 0.3 Log₁₀CFU/cm2 for ATMs and 2.6 ± 0.8 to 3.8 ± 0.1 Log₁₀CFU/cm2 for POS. Organisms associated with the fomites were Escherichia coli, Staphylococcus aureus, Staphylococcus epidermidis and species of Bacillus, Pseudomonas, Proteus, Streptococcus, Salmonella, Shigella, Micrococcus, Vibrio and Klebsiella. The highest and least frequency of occurrence in the dry season indicated Micrococcus (17.2%) and Vibrio (1.4%) in relation to Staphylococcus aureus (18.2%) and Proteus sp. (2.8%) in the wet season. The Gram-positive organisms exhibited high and low susceptibility to Gentamycin and Augmentin compared to Ofloxacin and Amoxicillin respectively in Gram-negative bacteria. The results indicate ATM and POS machine user interface as possible sources of pathogenic organisms. Therefore, regular cleaning of ATM and POS user interface and public awareness on the need for adequate personal hygienic practice after the use of these machines is recommended to reduce associated risks.
在干季和湿季,利用细菌培养技术对尤约市不同银行、学校、医院、餐馆、商场和加油站的自动柜员机(ATM)和销售点(POS)机用户界面进行了细菌鉴定。结果显示,两个季节的异养细菌总数依次为:银行、医院、学校、加油站、购物中心、餐馆、饮食店。丰水季各地点污染物细菌数量均较枯水季增加,差异有统计学意义(p = 0.05)。银行,医院和学校的自动取款机的THBC范围为5.6±0.1至7.8±0.6 Log₁₀CFU/cm2,汽油/加油站,购物中心和餐馆/餐馆的POS范围为3.4±0.3至5.0±0.2 Log₁₀CFU/cm2。干旱季节,atm机的THBC范围为4.1±0.6至6.4±0.3 Log₁₀CFU/cm2, POS机的THBC范围为2.6±0.8至3.8±0.1 Log₁₀CFU/cm2。与这些细菌相关的生物有大肠杆菌、金黄色葡萄球菌、表皮葡萄球菌以及芽孢杆菌、假单胞菌、变形杆菌、链球菌、沙门氏菌、志贺氏菌、微球菌、弧菌和克雷伯氏菌。旱季出现频率最高的是微球菌(17.2%)和弧菌(1.4%),雨季出现频率最高的是金黄色葡萄球菌(18.2%)和变形杆菌(2.8%)。革兰氏阴性菌对庆大霉素和奥格门汀的敏感性分别高于氧氟沙星和阿莫西林。结果提示ATM机和POS机用户界面可能是病原菌的来源。因此,我们建议定期清洁自动柜员机和POS机的用户界面,并提醒公众在使用这些机器后必须保持良好的个人卫生习惯,以减少相关风险。
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引用次数: 0
Effects of Consuming Different Varieties of Bambara Nut (Vigna subterranea) Seeds on Liver and Kidney of Diabetic and Non-diabetic Subject 食用不同品种班巴拉坚果种子对糖尿病和非糖尿病受试者肝肾的影响
Pub Date : 2021-07-24 DOI: 10.9734/JABB/2021/V24I630219
A. Mohammed, D. Mhya
Aims: Bambara nut seeds have been reported as a good source of food with high fiber and nutritional contents, and is consumed by persons with diabetes as one of the dietary therapy. However, the plant seeds are of different varieties and whether they might have vary biological effects on renal and liver functions is not fully known. This has prompted the study to evaluate effects of consuming different varieties of Bambara Nut seeds on liver and kidney of both diabetic and non-diabetic rats. Methodology: Four Bambara nut seeds varieties were dehulled and each heated at 60oC, cooled then grounded into flour using a mechanical grinder. The flours were used to formulate feeds which were given to different diabetic and non-diabetic rats’ groups as follows; group A (ALK01 feed), group B (ALK02 feed), group C (ALK03 feed), group D (ALK04 feed), group E (Basal feed), and group F (Normal animal’s feed). The animals were fed for 28 days then sacrifice, blood collected and serum separated and used for hepatic and renal parameters analysis. Results: The results of the study showed decrease levels of serum total protein and albumin, and elevation of AST and ALT activities as well as urea and creatinine concentrations in diabetic rats fed basal and normal diets, whereas, reverse in these parameters were recorded from diabetic rats fed varieties of Bambara nut seeds’ formulated feeds.  Conclusion: Findings from the study suggest consumption of Bambara nut seeds of different varieties is safe and has ability to ameliorate diabetic hepatic and renal failure in a variety dependent manner where; ALK 04 is more likely the most effective.
目的:据报道,班巴拉坚果种子是一种高纤维和高营养成分的良好食物来源,是糖尿病患者作为饮食治疗的一种。然而,植物种子的品种不同,它们是否对肾脏和肝脏功能有不同的生物学作用还不完全清楚。这促使本研究评估食用不同品种班巴拉坚果种子对糖尿病和非糖尿病大鼠肝脏和肾脏的影响。方法:四种班巴拉坚果种子去皮,每种种子在60摄氏度下加热,冷却,然后用机械研磨机磨成面粉。将所得面粉配制成饲料,分别饲喂糖尿病组和非糖尿病组大鼠:A组(ALK01饲料)、B组(ALK02饲料)、C组(ALK03饲料)、D组(ALK04饲料)、E组(基础饲料)、F组(正常动物饲料)。饲养28 d后处死,采血分离血清,进行肝肾参数分析。结果:糖尿病大鼠饲喂基础饲粮和正常饲粮时,血清总蛋白和白蛋白水平降低,谷丙转氨酶和谷丙转氨酶活性升高,尿素和肌酐浓度升高,而饲喂各种班巴拉坚果籽配制饲料时,这些参数均相反。结论:研究结果表明,食用不同品种的班巴拉坚果种子是安全的,并且能够以品种依赖的方式改善糖尿病肝和肾功能衰竭;alk04可能是最有效的。
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引用次数: 1
Seedling Growth of Tectona grandis using Different Potting Mixture 不同盆栽混合液对大地土幼苗生长的影响
Pub Date : 2021-07-14 DOI: 10.9734/JABB/2021/V24I630218
G. Omokhua, C. Fredrick, C. N. Okakpu
Aims: This study evaluated the influence of 11 potting media compositions on seedling growth and development of Tectona grandis. Study Design: The experiment was set up in a completely randomized design involving ten replicates. Place and Duration of Study: The study was carried out at the Department of Forestry and Wildlife Management Nursery, University of Port Harcourt, Rivers State, Nigeria, between April 2019 and April 2020. Methodology: Ten (10) seedlings per sowing media including topsoil, topsoil and cow dung (2:1, 3:1), topsoil and poultry dung (2:1, 3:1), topsoil and pig dung (2.1, 3:1), topsoil and sawdust (2.1, 3:1), topsoil and mushroom substrate (2.1, 3:1) were selected and transplanted into polybags. Growth parameters (seedling height, root collar diameter, leaf number and biomass (shoot dry weight (SDW), root dry weight (RDW) and total dry weight (TDW)) were determined and subjected to analysis of variance. Results: Seedlings of T. grandis displayed significant differences (p ≤ 0.05) in height, root collar diameter, leaf number and biomass. Among treatments, tallest seedlings were observed in mixture of topsoil and poultry dung (3:1), at months 1 to 3 and in mixture of topsoil and cow dung (3:1) at months 4 and 5, highest root collar diameter was observed in mixture of topsoil and poultry dung (3:1) and highest leaf number was recorded in mixture of topsoil and poultry dung (2:1 and 3:1) and topsoil and cow dung (2:1 and 3:1) at months 1 to 5. The highest SDW was evident in mixture of topsoil and poultry dung (2:1) while highest RDW and TDW were observed in mixture of topsoil and cow dung (3:1). Lowest height, diameter, leaf number and biomass were recorded in topsoil (control) at months 1 to 5. Conclusion: The results revealed that among the tested mixtures, topsoil and poultry dung and topsoil and cow dung mixtures were the best for seedlings growth of T. grandis.
目的:评价11种盆栽培养基成分对大构造菜幼苗生长发育的影响。研究设计:试验采用完全随机设计,共10个重复。研究地点和时间:该研究于2019年4月至2020年4月在尼日利亚河流州哈科特港大学林业和野生动物管理苗圃部进行。方法:选择表土、表土和牛粪(2:1,3:1)、表土和禽粪(2:1,3:1)、表土和猪粪(2.1,3:1)、表土和锯末(2.1,3:1)、表土和蘑菇基质(2.1,3:1),每种播种介质10棵幼苗,移栽到塑料袋中。测定生长参数(苗高、根颈直径、叶片数和生物量(茎干重(SDW)、根干重(RDW)和总干重(TDW))并进行方差分析。结果:大叶参幼苗高度、根颈直径、叶片数和生物量差异显著(p≤0.05)。其中,表土与禽粪(3:1)和表土与牛粪(3:1)混合处理在第1 ~ 3个月的幼苗最高,第4、5个月的幼苗最高,表土与禽粪(3:1)混合处理的根颈直径最高,表土与禽粪(2:1和3:1)和表土与牛粪(2:1和3:1)混合处理的叶片数最高,第1 ~ 5个月的叶片数最高。以表土与禽粪混合处理的SDW最高(2:1),以表土与牛粪混合处理的RDW和TDW最高(3:1)。表层土(对照)在第1 ~ 5个月记录最低高度、直径、叶数和生物量。结论:在试验混合物中,表土与禽粪、表土与牛粪混合对大田鸡苗生长最有利。
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引用次数: 0
The Antimicrobial, Anti Inflammatory and Analgesic Activities of the Rhizome Extract of Curcuma longa L. (Turmeric) 姜黄根茎提取物的抗菌、抗炎和镇痛活性
Pub Date : 2021-07-12 DOI: 10.9734/JABB/2021/V24I630217
Ogbonna Abigail Ify, Adejube Glory Raphael, Okoye Clifford Tochukwu, Ogbonna Ugoy Sonia Amarachi, N. Ikechukwu, Madu Josephine Madukaihe, Yakubu Thomas, Ogbonna Chike Innocent
Aim: This study aimed at investigating the anti-microbial, anti-inflammatory, and analgesic properties of rhizome extracts of Curcuma longa (Turmeric). Methodology: Extraction of biochemical constituents of the 150 g of the turmeric rhizomes powder was carried out successively using hexane, ethyl acetate, methanol, and water as solvents. The antimicrobial potentials of the different fractions of the extract were tested on clinical bacterial including Staphylococcus aureus, Streptococcus pneumonia, Klebsiella pneumonia and Pseudomonas aeruginosa using agar well diffusion method at concentrations of 400 mg/ml, 200 mg/ml, 100 mg/ml, 50 mg/ml, and 25 mg/ml. The Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) were determined using agar dilution technique. For the anti-inflammatory effects of the extract of C. longa, albino rats were treated with methanolic extract (250, 500, and 1000 mg/kg body weight) and diclofenac as control, after which they were injected with egg albumin on the right hind paw to induce inflammation. The swelling degree of the injected paw was measured. The analgesic effect of C. longa methanolic extract on hot plate-induced pain was also investigated in albino rats, and the Index of response latency was recorded. Results: The biochemical assay showed that C. longa extract contained Alkaloids, Saponins, Tannins, Flavonoids, Carbohydrate, Steroids, Terpenes, Anthraquinone, and Cardiac Glycosides, with Methanol and aqueous extracts having the most biochemical constituents. The antibacterial susceptibility screening showed that K.pneumonia was the most susceptible organism, having the highest zone of inhibition of 18 mm for ethyl acetate extract at the concentration of 400 mg/ml. This was followed by S. pneumonia, S.aureus and P. aeruginosa with inhibition zone of 13, 12 and 10 mm respectively. The MIC for K.pneumonia and S.aureus were both 200 mg/ml, while that of P. aeruginosa and S. pneumonia were both 400 mg/ml. The paw size of rats treated with increasing doses of the extract and diclofenac significantly decreased with time. The concentration of 250 mg/kg had the lowest paw volume of 4.39±0.36mm while 1000 mg/kg recorded 5.18±0.28 as the highest, at 180 minute. Conclusion: Based on the result obtained, it can be concluded that Curcuma longa Rhizome extract possess anti-microbial, anti-inflammatory, and analgesic properties.
目的:研究姜黄根茎提取物的抑菌、抗炎、镇痛作用。方法:以正己烷、乙酸乙酯、甲醇、水为溶剂,依次提取150 g姜黄根茎粉末的生化成分。采用琼脂孔扩散法测定不同组分提取物在浓度为400 mg/ml、200 mg/ml、100 mg/ml、50 mg/ml和25 mg/ml时对金黄色葡萄球菌、肺炎链球菌、肺炎克雷伯菌和铜绿假单胞菌的抑菌力。用琼脂稀释法测定最小抑菌浓度(MIC)和最小杀菌浓度(MBC)。为了研究龙骨草提取物的抗炎作用,采用甲醇提取物(250、500、1000 mg/kg体重)和双氯芬酸作为对照,右后爪注射卵白蛋白诱导炎症。测量注射足部肿胀程度。观察龙骨醇提物对白化大鼠热板痛的镇痛作用,并记录反应潜伏期指数。结果:龙骨草提取物中含有生物碱、皂苷、单宁、黄酮类化合物、碳水化合物、甾体、萜烯、蒽醌和心苷,其中甲醇和水提液中生化成分最多。抗菌药敏筛选结果显示,肺炎分枝杆菌为最敏感菌,乙酸乙酯提取物浓度为400 mg/ml时,其抑菌带最高达18 mm。其次是肺炎链球菌、金黄色葡萄球菌和铜绿假单胞菌,其抑制带分别为13、12和10 mm。肺炎克雷伯菌和金黄色葡萄球菌的MIC均为200 mg/ml,铜绿假单胞菌和肺炎克雷伯菌的MIC均为400 mg/ml。增加双氯芬酸和提取物剂量的大鼠的爪子大小随着时间的推移而显著减小。浓度为250 mg/kg时,其爪部体积最小,为4.39±0.36mm;浓度为1000 mg/kg时,其爪部体积最大,为5.18±0.28 mm。结论:莪术提取物具有抗菌、抗炎、镇痛作用。
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引用次数: 3
Effect of Hormonal Regime and Explant Type on Cell Clusters Expression of Maize Mutants (Zea Mays L) Derived from Gamma Irradiated Seeds of Ev8728 variety 激素和外植体类型对γ辐照玉米Ev8728种子衍生突变体(Zea Mays L)细胞簇表达的影响
Pub Date : 2021-06-18 DOI: 10.9734/jabb/2021/v24i530213
K. Nadia, A. Koutoua, Y. Konan, Kassi Amalan Angèle, Soro Dogniméton, Kouakou Tano Hilaire, K. Justin
Maize (Zea mays L.) seeds irradiated with gamma or not from the fourth self-fertilisation cycle were selected for tissue culture. For this purpose, MS medium supplemented with 30 g.L-1 sucrose, 100 mg.L-1 casein hydrolysate, 100 mg.L-1 myo-inositol and 6 g.L-1 agar was used. For this purpose, three auxins type (2.4-dichlorophenoxyacetic acid (2.4-D), 2-methoxy-3.6-dichlorobenzoic acid (Dicamba) and Indole-3-Acetic Acid (AIA)) and explants (root, epicotyl and leaf) were tested. The results showed that 2.4-D more precisely at 3.5 mg.L-1 was the best auxin for callus induction in the different maize mutants studied. The induction rate, dry matter weight and water content of callus varied according to the type, age, explant position and the maize mutants studied (control, 200 and 300 grays). Thus, the 7-day root and more precisely its basal part was better for callogenesis. In addition, mutants of the 200 grays dose were more expressive in the ability to induce callus in EV8728maize variety.
选择经γ辐照或未经γ辐照的玉米(Zea mays L.)第4个自交受精周期的种子进行组织培养。为此,MS培养基中添加30g。L-1蔗糖,100毫克。L-1酪蛋白水解物,100mg。L-1肌醇和6克。采用L-1琼脂。为此,对3种生长素(2.4-二氯苯氧乙酸(2.4-D)、2-甲氧基-3.6-二氯苯甲酸(麦草畏)和吲哚-3-乙酸(AIA))和外植体(根、上胚轴和叶)进行了试验。结果表明,2.4-D在3.5 mg时更精确。在不同的玉米突变体中,L-1是诱导愈伤组织的最佳生长素。愈伤组织的诱导率、干物质质量和水分含量因品种、年龄、外植体位置和所研究的玉米突变体(对照、200和300灰)的不同而不同。因此,7天的根,更确切地说,是根的基部,更有利于形成胼胝质。此外,200灰剂量的突变体在ev8728玉米品种中诱导愈伤组织的能力更强。
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引用次数: 0
In-vivo Antiplasmodial Activity of Sulfadoxine/Pyrimethamine/Doxycycline on Plasmodium berghei Infected Mice 磺胺多辛/乙胺嘧啶/强力霉素对伯氏疟原虫感染小鼠体内抗疟原虫活性的研究
Pub Date : 2021-06-04 DOI: 10.9734/JABB/2021/V24I530212
U. Georgewill, Elias Adikwu
The search for newer antimalarial drug combinations is on the front burner due to rising Plasmodium resistance to some currently used antimalarial drugs. This study examined the antiplasmodial activity of sulfadoxine/pyrimethamine/doxycycline (S/P/D) on mice infected with Plasmodium berghei (P. berghei). Swiss albino mice (25-30 g) inoculated with P. bergei (1x10 7 ) were treated with D (2.2 mg/kg), S/P (21.4/10.7 mg/kg), and S/P/D for 4 days. The positive and negative controls were treated with normal saline (0.2 ml) and chloroquine (CQ) (10 mg/kg) for 4 days, respectively. After treatment, blood samples were collected and assessed for parasitemia levels and biochemical parameters. The mice were observed for mean survival time (MST). D, S/P, S/P/D and CQ significantly decreased parasitemia in the curative, prophylactic and suppressive tests at p<0.05; p<0.01, p<0.001 and p<0.001, respectively when compared to negative control. In the curative study, 55.9%, 65.1%, and 81.7% parasitemia inhibitions were produced by D, S/P and S/P/D, respectively whereas CQ produced 75.6 % parasitemia inhibition. D, S/P and S/P/D significantly prolonged MST at p<0.05, p<0.01 and p<0.001 respectively when compared to negative control. Original Research Article Georgewill and Adikwu; JABB, 24(5): 1-8, 2021; Article no.JABB.67463 2 Altered serum biochemical markers in P. berghei infected mice were marked by significantly (p<0.001) decreased packed cell volume, red blood cells, hemoglobin, high density lipoprotein cholesterol levels with significantly (p<0.001) increased cholesterol, white blood cells, total cholesterol, low-density lipoprotein cholesterol and triglyceride levels when compared to control. However, D, S/P and S/P/D significantly restored the aforementioned markers at p<0.05, p<0.01 and p<0.001, respectively when compared to negative control. S/P/D may be used as an antimalarial drug.
由于疟原虫对一些目前使用的抗疟药物的耐药性不断上升,寻找新的抗疟药物组合成为当务之急。研究了磺胺多辛/乙胺嘧啶/强力霉素(S/P/D)对伯氏疟原虫感染小鼠的抗疟原虫活性。接种白僵菌(1 × 10 7)的瑞士白化小鼠(25 ~ 30 g)分别给予D (2.2 mg/kg)、S/P (21.4/10.7 mg/kg)和S/P/D处理4 D。阳性对照和阴性对照分别用生理盐水(0.2 ml)和氯喹(10 mg/kg)治疗4 d。治疗后,采集血样并评估寄生虫血症水平和生化参数。观察小鼠平均生存时间(MST)。D、S/P、S/P/D和CQ在治疗、预防和抑制试验中显著降低寄生虫率,P <0.05;与阴性对照比较,P <0.01, P <0.001, P <0.001。在疗效研究中,D、S/P和S/P/D分别产生55.9%、65.1%和81.7%的寄生虫血症抑制,而CQ产生75.6%的寄生虫血症抑制。与阴性对照组相比,D、S/P和S/P/D显著延长MST (P <0.05、P <0.01和P <0.001)。Georgewill和Adikwu;Jabb, 24(5): 1- 8,2021;文章no.JABB。67463 2与对照组相比,伯氏疟原虫感染小鼠的血清生化指标显著(p<0.001)减少了堆积细胞体积、红细胞、血红蛋白、高密度脂蛋白胆固醇水平,显著(p<0.001)增加了胆固醇、白细胞、总胆固醇、低密度脂蛋白胆固醇和甘油三酯水平。与阴性对照相比,D、S/P和S/P/D显著恢复了上述标记,分别为P <0.05、P <0.01和P <0.001。S/P/D可作为抗疟药使用。
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引用次数: 1
Cytotoxicity and Bioremediation of Heavy Metals by Highly Resistant Marine Bacteria 高抗性海洋细菌对重金属的细胞毒性及生物修复作用
Pub Date : 2021-06-04 DOI: 10.9734/JABB/2021/V24I430211
Enas N. Danial, Walaa A Majrashi, Ahlam O. Bin Afif, Ebtehal S Alamri, Entesar M. Alhatimi, Nowayer J. Alghamdi
Environmental pollution of heavy metals is increasingly becoming a problem and has become of great concern due to the adverse effects it is causing around the world. These inorganic pollutants are being discarded in our waters, soils and into the atmosphere due to the rapidly growing agriculture and metal industries, improper waste disposal, fertilizers, and pesticides. Pollution in industrial areas is a serious environmental concern. Wastewater containing biotoxic substances of heavy metals in the ecosystem is one of the most important environmental and health challenges in our society. Hence, there is a growing need for the development of novel, efficient, eco-friendly, and cost-effective approach for the remediation of inorganic metals (Cr, Hg, Cd, and Pb) released into the environment and to safeguard the ecosystem. Mercury (Hg), Chromium (Cr), Cadmium (Cd), Review Article Danial et al.; JABB, 24(4): 48-72, 2021; Article no.JABB.68532 49 and lead (Pb) are known to cause damage to living organisms, including human beings. In this regard, recent advances in microbes-base heavy metal have propelled bioremediation as a prospective alternative to conventional techniques. Heavy metals are nonbiodegradable and could be toxic to microbes. Several microorganisms have evolved to develop detoxification mechanisms to counter the toxic effects of these inorganic metals. Several marine bacteria highly resistant and capable of growing at higher concentrations of Hg, Cr, Cd and Pb and to evaluate their potential to detoxify. Their detoxification efficiency for Hg, Cr, Cd and Pb indicates good potential for application in bioremediation of toxic heavy metals.
重金属对环境的污染日益成为一个问题,在世界范围内引起了极大的关注。由于快速发展的农业和金属工业、不当的废物处理、化肥和杀虫剂,这些无机污染物被丢弃在我们的水域、土壤和大气中。工业区的污染是一个严重的环境问题。生态系统中含有重金属生物毒性物质的废水是当今社会面临的最重要的环境和健康挑战之一。因此,开发一种新颖、高效、环保、经济的方法来修复释放到环境中的无机金属(Cr、Hg、Cd和Pb),以保护生态系统的需求日益增长。汞(Hg),铬(Cr),镉(Cd),综述文章丹尼尔等;Jabb, 24(4): 48-72, 2021;文章no.JABB。已知68532 - 49和铅(Pb)会对包括人类在内的生物体造成损害。在这方面,微生物基重金属的最新进展推动了生物修复作为传统技术的一个有前景的替代方案。重金属是不可生物降解的,可能对微生物有毒。一些微生物已经进化出解毒机制来对抗这些无机金属的毒性作用。几种海洋细菌具有高度抗性,能够在较高浓度的汞、铬、镉和铅下生长,并评估它们的解毒潜力。它们对汞、铬、镉和铅的解毒效果良好,在有毒重金属的生物修复中具有良好的应用潜力。
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引用次数: 1
Fungi Diversity on Some Fruits and Biological Control using Two Plants Extracts 几种水果真菌多样性及两种植物提取物的生物防治
Pub Date : 2021-05-25 DOI: 10.9734/JABB/2021/V24I430209
Paul Ndip Besong, T. R. Kinge
Fruits play an essential role in human nutrition by contributing the necessary growth factors like essential minerals and vitamins in human daily diet maintaining a good and normal health. But rot diseases caused by fungi cause severe losses of agricultural and horticultural crops every year. This work aimed to study fungi diversity on some fruits and carry out biological control using two plant extracts. A total of 17 infected fruit samples were collected from two local markets, small pieces of infected parts were inoculated on prepared plates of Potato Dextrose Agar. Incubation was done for 7 days and pure cultures were made, and pure isolated fungi were identified according to the recommended references. Ethanolic leaf extracts of Ocimum gratissimum and Moringa oleifera were evaluated for in vitro antifungal activities on Aspergillus and Fusarium species isolated from spoilt tomatoes and banana using the Agar Dilution Method. Eleven different fungi species comprising nine genera were isolated from the 17 fruits collected from the Nkwen and main markets of Bamenda. The fungi were identified as Saccharomyces cerevisiae, Aspergillus niger, Penicillium digitatum, Mucor sp, Fusarium sp, Mucor racemosus, Alternaria alternata, Colletotrichum sp, Nodulisporium sp, Fusarium oxysporum and Aspergillus flavus. There was some diversity in isolation frequency of the fungi from the fruits. Aspergillus, Penicillium, and Fusarium were the most Original Research Article Besong and Kinge; JABB, 24(4): 24-38, 2021; Article no.JABB.68075 25 common genera that colonized the fruits, with Aspergillus sp. found to be the most dominant fungi responsible for extensive damage of fruits. Ocimum gratissimum and Moringa oleifera leaf extracts had inhibitory activities on the test fungi. The diversity of the fungi identified in this study could be regarded as the most common causes of post-harvest deterioration of fruits. The findings of this study bring further evidence that Moringa oleifera and Ocimum gratissimum leaves extracts have the potential of becoming powerful and safe alternative means of fungi control on fruits instead of the harmful, expensive, environmentally unfriendly chemical fungicides.
水果在人体营养中起着至关重要的作用,在人类日常饮食中提供必要的生长因子,如必需的矿物质和维生素,保持良好和正常的健康。但由真菌引起的腐病每年都给农业和园艺作物造成严重的损失。本研究旨在研究几种水果的真菌多样性,并利用两种植物提取物进行生物防治。从当地两个市场采集了17份受感染的水果样本,将感染的小块接种在制备好的马铃薯葡萄糖琼脂培养皿上。孵育7 d,进行纯培养,根据推荐的参考文献鉴定纯分离真菌。采用琼脂稀释法研究了辣木叶乙醇提取物对腐败番茄和香蕉中分离的曲霉和镰刀菌的体外抑菌活性。从Nkwen和巴门达主要市场采集的17种果实中分离出9属11种不同的真菌。真菌鉴定为酿酒酵母菌、黑曲霉、指状青霉、毛霉、镰刀菌、总状毛霉、互交霉、炭疽菌、球孢菌、尖孢镰刀菌和黄曲霉。果实中真菌的分离频率存在一定的差异。曲霉、青霉和镰刀菌是最具原创性的研究对象;Jabb, 24(4): 24- 38,2021;文章no.JABB。68075寄生在果实上的25个常见属,其中曲霉属(Aspergillus sp.)被发现是对果实造成广泛损害的最主要真菌。茴香和辣木叶提取物对试验真菌有抑制作用。本研究中鉴定的真菌的多样性可被视为果实收获后变质的最常见原因。本研究结果进一步证明辣木和茴香叶提取物有潜力成为有效和安全的水果真菌防治手段,取代有害、昂贵、不环保的化学杀菌剂。
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引用次数: 0
Improved Biogas Production from Corn Stalks, Pig Manure and Eggshell 改良玉米秸秆、猪粪和蛋壳产沼气的研究
Pub Date : 2021-05-25 DOI: 10.9734/JABB/2021/V24I430210
U. A. Adekola, I. Eiroboyi, Y. Yerima, T. E. B. Akinmoji, L. O. Uti
The need for an environmentally friendly energy source in the world has led to major diversification in renewable energy. Biogas provides a renewable energy source that will replace fossil fuel inevitably. The experiment was carried out using a self-designed laboratory-scale anaerobic biogas digester. The study was carried out at room temperature from 25 31°C for 20 days using corn stalk as the main substrate while Pig manure and eggshell were used as co-substrates. The findings showed that the biogas produced from the sample containing a blend of corn stalk, Pig manure, and eggshell resulted in higher biogas volume than the sample containing corn stalk and eggshell, corn stalk, and pig manure as well as the sample containing only corn stalk. This implies that the use of the corn stalk blend is a source of renewable energy. Thus, ensuring the sustainability of biogas production in the future. Original Research Article Adekola et al.; JABB, 24(4): 39-47, 2021; Article no.JABB.68458 40
世界上对环境友好型能源的需要导致了可再生能源的重大多样化。沼气是一种可再生能源,将不可避免地取代化石燃料。实验采用自行设计的实验室规模厌氧沼气池进行。以玉米秸秆为主基质,猪粪和蛋壳为辅基质,在25 ~ 31℃的室温条件下进行了为期20 d的试验。结果表明,玉米秸秆-猪粪-蛋壳混合样品产生的沼气量高于玉米秸秆-蛋壳混合样品、玉米秸秆-猪粪混合样品和仅含玉米秸秆的样品。这意味着使用玉米秸秆混合物是一种可再生能源。从而确保未来沼气生产的可持续性。Adekola et al.;;Jabb, 24(4): 39-47, 2021;文章no.JABB。68458年40
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引用次数: 1
Prevalence and Antibiotic Susceptibility Pattern of Salmonella Species 沙门氏菌的流行及药敏模式
Pub Date : 2021-05-19 DOI: 10.9734/JABB/2021/V24I430207
A. R. Alhassan, C. Saba, S. W. Kpordze
Aim: This research was carried out to determine the prevalence of Salmonella species from smoked fish sold in the three major markets in Tamale Metropolis and examined the isolates resistance patterns to various antibiotics. Study Design: The study was in two parts which include administering questionnaires and collecting samples. The second part was the laboratory analysis to detect Salmonella species from the collected samples. Place and Duration of Study: The study was carried out in the Spanish laboratory (microbiology section) of the Department of Biotechnology, Faculty of Biosciences, of the University for Development Studies. Methodology: A total of one hundred samples were examined. The samples were enriched on buffered peptone water and inoculated on Modified Semi-Solid Rappaport Vassiliadis. Xylose Lysine Deoxycholate was used to identify the bacteria, and Simons Citrate agar was used for the biochemical test. The antibiotic test was done by using the Kirby-Bauer disc diffusion test. Original Research Article Alhassan et al.; JABB, 24(4): 1-11, 2021; Article no. JABB.68023 2 Results: After the laboratory analysis, 67 (67%) out of the 100 samples were confirmed to be positive for Salmonella species of which Cut fish (11.9%), Redfish (11.9%), Mudfish (11.9%), and Chale fish (11.9%) recorded the highest contamination, and among the three markets, Central market had the highest fish contamination. The resistance patterns of the isolates to the various antibiotics used were; Ciprofloxacin (2.98%), Ceftriaxone (34.32%), Ampicillin (83.58%), Doxycycline (88.05%), Amoxicillin/Clavulanic acid (91.04%), and Oxytetracycline (92.53%). Conclusion: This study revealed that smoked fish sold in the Tamale Metropolis contained Salmonella positive that can cause food poisoning and other gastrointestinal problems.
目的:对塔梅尔市3个主要市场销售的熏鱼中沙门氏菌的流行情况进行调查,并检测其对各种抗生素的耐药性。研究设计:本研究分为问卷调查和样本收集两部分。第二部分是实验室分析,从采集的样品中检测沙门氏菌的种类。研究地点和时间:该研究在发展研究大学生物科学学院生物技术系的西班牙实验室(微生物科)进行。方法:共检查100个样本。将样品用缓冲蛋白胨水富集,接种于改性半固体Rappaport Vassiliadis上。采用木糖赖氨酸脱氧胆酸酯进行细菌鉴定,柠檬酸西蒙斯琼脂进行生化试验。抗生素试验采用Kirby-Bauer盘扩散试验。Alhassan et al.;Jabb, 24(4): 1- 11,2021;货号。结果:经实验室分析,100份样品中有67份(67%)检出沙门氏菌,其中切鱼(11.9%)、红鱼(11.9%)、泥鱼(11.9%)和Chale鱼(11.9%)的污染最高,其中中环市场的污染最高。分离株对常用抗生素的耐药模式为:环丙沙星(2.98%)、头孢曲松(34.32%)、氨苄西林(83.58%)、多西环素(88.05%)、阿莫西林/克拉维酸(91.04%)、土霉素(92.53%)。结论:本研究发现,在Tamale Metropolis出售的熏鱼含有沙门氏菌,可引起食物中毒和其他胃肠道问题。
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引用次数: 0
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Journal of Advances in Biology & Biotechnology
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