Journal of biotechnology & biomaterials最新文献_第10页

Investigation of Biodiesel Potential of Biomasses of Microalgaes Chlorella, Spirulina and Tetraselmis by NMR and GC-MS Techniques 微藻小球藻、螺旋藻和四螺藻生物质生物柴油潜力的NMR和GC-MS研究

Journal of biotechnology & biomaterials Pub Date : 2016-03-08 DOI: 10.4172/2155-952X.1000220

A. S. Sarpal, I. Costa, C. Teixeira, D. Filócomo, C. Renata, P. R. M. Silva, V. Cunha, R. J. Daroda

{"title":"Investigation of Biodiesel Potential of Biomasses of Microalgaes Chlorella, Spirulina and Tetraselmis by NMR and GC-MS Techniques","authors":"A. S. Sarpal, I. Costa, C. Teixeira, D. Filócomo, C. Renata, P. R. M. Silva, V. Cunha, R. J. Daroda","doi":"10.4172/2155-952X.1000220","DOIUrl":"https://doi.org/10.4172/2155-952X.1000220","url":null,"abstract":"The detailed component analyses of algal oils such as neutral (mono, di and triglycerides; free fatty acids) and polar (glyceroglyco/phospho) lipids, and their fatty acid profile including poly unsaturated fatty acids (PUFAs) (C18:3, C22:6) have been carried out by NMR (1H, 13C) and GC-MS techniques to explore their biodiesel potential. The algal oils were obtained by ultrasonic solvent extraction of microalgae biomasses cultivated on a lab scale. The results revealed that biomass and neutral lipids productivity as well as quality and composition of saturated and unsaturated fatty acid were influenced by media (modified RM6, F/2, WC), microalgae species/strains (Chlorella vulgaris, Spirulina platensi and Tetraselmis affchuii) and shape of the cultivated system (Erlenmeyer flask, polythene tubular or round container). The replacement of source of N and P with cheaper source of fertilizers (super phosphates + Chillean salt peter) in the cultivation media F/2 and WC has not affected the neutral lipid productivity, rather produced FAMEs with lower amount of Docosahexaenoic acid (DHA). The biomass cultivated in the modified RM6 media by Spirulina platensi is comprised of lower amount of unsaturated fatty esters without DHA (42.9% w/w) (PUFA as E¤-linoleic) compared to other biomasses (61.2-69.8 %w/w), thus quite suitable for production of biodiesel with higher oxidation stability and higher cetane number. The algal oils generated from the biomasses in the cultivation system are promising feed stocks for biodiesel and value added products DHA and α, γ -linolenic acids. The developed fast and cost effective analytical strategy based on 1H NMR techniques will facilitate algae cultivators for screening of species and optimization of cultivation parameters to produce a choice of product, thus contribute partly in the overall reduction in the cost of production of biodiesel.","PeriodicalId":15156,"journal":{"name":"Journal of biotechnology & biomaterials","volume":"1 1","pages":"1-15"},"PeriodicalIF":0.0,"publicationDate":"2016-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81028350","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: 36

Ribokinase: A Possible Target for Chemotherapy of Protozoans 核糖激酶:原生动物化疗的可能靶点

Journal of biotechnology & biomaterials Pub Date : 2016-02-29 DOI: 10.4172/2155-952X.1000219

Ogbunude Poj, Udeogaranya Po, A. Eze, Ikekpeazu Je, Okoli Ua

引用次数: 1

Sulfonylureas can Stimulate Insulin Release by Flip-Flop across Phospholipid Membranes 磺脲类化合物可以通过磷脂膜的翻转来刺激胰岛素释放

Journal of biotechnology & biomaterials Pub Date : 2016-02-08 DOI: 10.4172/2155-952X.1000218

J. Alruwaili

引用次数: 2

Efficacy of Some Plant Extracts as Storage Protectants against Callosobruchus maculatus 几种植物提取物对黄斑胼胝体的贮藏保护作用

Journal of biotechnology & biomaterials Pub Date : 2016-02-01 DOI: 10.4172/2155-952X.1000217

M. Ojebode, C. Olaiya, A. E. Adegbite, K. Karigidi, T. Ale

{"title":"Efficacy of Some Plant Extracts as Storage Protectants against Callosobruchus maculatus","authors":"M. Ojebode, C. Olaiya, A. E. Adegbite, K. Karigidi, T. Ale","doi":"10.4172/2155-952X.1000217","DOIUrl":"https://doi.org/10.4172/2155-952X.1000217","url":null,"abstract":"A significant quantity of crops is lost as a result of application of non-selective crop protection agents. The agrochemical industry is faced with increasing demand for the development of new crop protection agents that are safe for the environment and consumers. This research aimed at contributing to the collation and organization of baseline data on natural insect repelling and insecticidal agents. It also aimed at discovering crop protection agents that would preferentially get rid of pests. The need to develop pest control measures as alternative to chemicals is a priority for Scientists worldwide. Therefore, it is critical to find a cost effective and non-toxic method to prevent pest attack on field or stored crops. In this study, Cymbopogon citratus (lemon grass), Citrus sinensis (orange peel) and Azadirachta indica (neem) were used to investigate and evaluate the potency of the fixed and essential oils of these plants as pest control agent for the main storage insect pest of cowpea- Callosobruchus maculatus. All extracts were toxic to adult C. maculatus and prevented egg hatching. However, Citrus sinensis showed the highest weevil mortality on the first day of exposure, followed by Azadirachta indica and the least toxic was Cymbopogon citratus in the fixed oil category of extracts while in the essential oil category, Cymbopogon citratus showed 100% adult weevil mortality within one hour of exposure and Citrus sinensis was able to achieve 100% weevil mortality at the third hour of exposure. The Gas Chromatography/Mass Spectrometry (GC/MS) analysis of the essential oils of Cymbopogon citratus and Citrus sinensis was used to identify possible components of the oils comparing with existing data. This led to the development of technique adoptable for small holder farmers and cowpea traders.","PeriodicalId":15156,"journal":{"name":"Journal of biotechnology & biomaterials","volume":"9 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87658966","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: 16

Modern Approaches into Biochemical and Molecular Biomarkers: KeyRoles in Environmental Biotechnology 生物化学和分子生物标志物的现代方法:在环境生物技术中的关键作用

Journal of biotechnology & biomaterials Pub Date : 2016-01-06 DOI: 10.4172/2155-952X.1000216

J. Paniagua-Michel, J. Olmos-Soto

{"title":"Modern Approaches into Biochemical and Molecular Biomarkers: KeyRoles in Environmental Biotechnology","authors":"J. Paniagua-Michel, J. Olmos-Soto","doi":"10.4172/2155-952X.1000216","DOIUrl":"https://doi.org/10.4172/2155-952X.1000216","url":null,"abstract":"Biomarkers are characterized by a unique order in their molecular structures and are the first sentinel’s tools for sensitive effect measurements in environmental quality or biotechnological processes assessment. Most of the importance of biomarkers resides in their property to be measurable using different biochemical and molecular approaches. The recent application and or studies of biomarkers and its correlation at the omics era, has revalorized new roles of biomarkers in environmental biotechnology. In this work, some of the common biomarkers actually used, viz, pigments, cytochrome P4501A enzyme induction, acetylcholinesterase inhibition, DNA integrity and metallothiones are analyzed concomitantly to recent applications of Omics technologies to optimize metabolic networks in living biomes. New developments under the umbrella of the culture independent molecular tools applied for the analyses of mixed microbial communities have contributed in understanding catabolism from contaminants in extreme and fragile environments. These approaches open the venue for the new biomarkers for an increased biodiversity expectative of ca. 99% higher than conventional classification. Functional genes by metagenomic arrays, will greatly improve our understanding of microbial interaction and metabolism to facilitate the development of suitable bioremediation strategies for environment clean up.","PeriodicalId":15156,"journal":{"name":"Journal of biotechnology & biomaterials","volume":"29 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2016-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74752049","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: 17

Effects of Naphthalene Acetic Acid (NAA) and Indole -3- Butyric Acid (IBA) on In Vitro Rooting of Sugarcane ( Saccharum officinarum L.) Micro- Shoots 萘乙酸(NAA)和吲哚-3-丁酸(IBA)对甘蔗离体生根的影响小芽

Journal of biotechnology & biomaterials Pub Date : 2016-01-04 DOI: 10.4172/2155-952X.1000215

B. Tolera

{"title":"Effects of Naphthalene Acetic Acid (NAA) and Indole -3- Butyric Acid (IBA) on In Vitro Rooting of Sugarcane ( Saccharum officinarum L.) Micro- Shoots","authors":"B. Tolera","doi":"10.4172/2155-952X.1000215","DOIUrl":"https://doi.org/10.4172/2155-952X.1000215","url":null,"abstract":"In Vitro rooting of micropropagated micro-shoots of two commercial sugarcane varieties was carried out with the aim of evaluating the root induction responses of the sugarcane varieties (B41-227 and N14) to alpha naphthalene acetic acid (NAA) and Indole -3- butyric acid (IBA). Accordingly, four levels of NAA (0, 1, 2, and 3 mg L-1) and IBA (0, 1, 2 and 3 mg L-1) in a completely randomized design with 4 × 4 × 2 factorial treatment combination arrangements were tested. Data on the number of roots per shoot and average root length (cm) were collected after 30 days of culture on ½ MS root induction medium. Analysis of variance revealed that the interaction effects of NAA, IBA and the sugarcane genotypes on number of roots per shoot and average root length of both sugarcane varieties was very highly significant (P<0.0001). Culture medium containing 2 mg L-1 NAA and 1 mg L-1 IBA for B41-227 and 1 mg L-1 NAA alone for N14 was found to be optimum. On these medium, B41-227 gave 33 ± 0.15 roots per shoot with 2.92 ± 0.18 cm root length and N14 produced 35± 0.20 roots per shoot with 3.2 ± 0.25 cm root length. The rooted plantlets were survived 100% after four weeks of acclimatization in greenhouse on Farmyard manure and soil at 2:8 ratios. The optimized protocol can be used to develop healthy and profuse root system in the sugarcane micro-shoots, an essential stage in sugarcane micropropagation.","PeriodicalId":15156,"journal":{"name":"Journal of biotechnology & biomaterials","volume":"12 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82440295","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: 15

A New Method for the Screening of Ureolytic Bacteria Inducing CalciumCarbonate Precipitation 一种筛选诱导碳酸钙沉淀的溶尿菌的新方法

Journal of biotechnology & biomaterials Pub Date : 2016-01-01 DOI: 10.4172/2155-952X.1000248

A. Shukla, S. Cameotra

引用次数: 6

Method to Produce Curcumin Oil-in-Water Nanoemulsions as Templates for Drug Carriers 制备姜黄素水包油纳米乳作为药物载体模板的方法

Journal of biotechnology & biomaterials Pub Date : 2016-01-01 DOI: 10.4172/2155-952X.1000247

E. Marin, Briceño Mi, Georgescu Cc

引用次数: 13

A Review on Enzymatic Treatment of Phenols in Wastewater 酶法处理废水中酚类化合物的研究进展

Journal of biotechnology & biomaterials Pub Date : 2016-01-01 DOI: 10.4172/2155-952X.1000249

Prashant Agarwal, Ritika Gupta, N. Agarwal

引用次数: 28

Insight into Zeta Potential Measurements in Biopolymer Film Preparation 深入了解Zeta电位测量在生物聚合物薄膜制备

Journal of biotechnology & biomaterials Pub Date : 2016-01-01 DOI: 10.4172/2155-952X.1000E126

M. Sabbah, M. Esposito, P. Pierro, C. Giosafatto, L. Mariniello, R. Porta

{"title":"Insight into Zeta Potential Measurements in Biopolymer Film Preparation","authors":"M. Sabbah, M. Esposito, P. Pierro, C. Giosafatto, L. Mariniello, R. Porta","doi":"10.4172/2155-952X.1000E126","DOIUrl":"https://doi.org/10.4172/2155-952X.1000E126","url":null,"abstract":"Microand nano-particle charge is one of the main factors determining the physical stability of both emulsions and suspensions and can be quantified by measuring their so called “zeta potential”. When all the particles have a large either negative or positive zeta potential value, they will repel each other and, as a consequence, the suspension becomes stable. By contrast, whether the zeta potential is close to 0 mV, the tendency for flocculation increases. Zeta potential is, however, a feature of the particle in its environment and not of the particle itself. In fact, its net charge in solution affects the ion distribution surrounding the particle, thus resulting in an increase in the concentration of counter-ions. The region over which this influence extends is called “electrical double layer” (EDL) and EDL splits into two regions (Figure 1). In the first, called “stern layer”, the ions are of opposite charge with respect to the particles and, being strongly bound to them, move with them. The second layer, conversely, is a “diffuse layer” where the ions are less strongly attached and, inside it, there is a boundary line between the ions moving with the particles and the not moving ones. This region, called “slipping plane”, is known as the surface of hydrodynamic shear and the potential existing in the slipping plane is called zeta potential [1].","PeriodicalId":15156,"journal":{"name":"Journal of biotechnology & biomaterials","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88752693","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: 18