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https://www.readbyqxmd.com/read/29472122/recent-developments-of-downstream-processing-for-microbial-lipids-and-conversion-to-biodiesel
#1
REVIEW
Sravan Kumar Yellapu, Bharti, Rajwinder Kaur, Lalit R Kumar, Bhagyashree Tiwari, Xiaolei Zhang, Rajeshwar D Tyagi
With increasing global population and depleting resources, there is an apparent demand for radical unprecedented innovation to satisfy the basal needs of lives. Hence, non-conventional renewable energy resources like biodiesel have been worked out in past few decades. Biofuel (e.g. Biodiesel) serves to be the most sustainable answer to solve "food vs. fuel crisis". In biorefinery process, lipid extraction from oleaginous microbial lipids is an integral part as it facilitates the release of fatty acids...
February 1, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29468428/the-production-properties-and-applications-of-thermostable-steryl-glucosidases
#2
REVIEW
Andres Aguirre, Florencia Eberhardt, Guillermo Hails, Sebastian Cerminati, María Eugenia Castelli, Rodolfo M Rasia, Luciana Paoletti, Hugo G Menzella, Salvador Peiru
Extremophilic microorganisms are a rich source of enzymes, the enzymes which can serve as industrial catalysts that can withstand harsh processing conditions. An example is thermostable β-glucosidases that are addressing a challenging problem in the biodiesel industry: removing steryl glucosides (SGs) from biodiesel. Steryl glucosidases (SGases) must be tolerant to heat and solvents in order to function efficiently in biodiesel. The amphipathic nature of SGs also requires enzymes with an affinity for water/solvent interfaces in order to achieve efficient hydrolysis...
February 21, 2018: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29468394/emission-and-performance-analysis-on-the-effect-of-exhaust-gas-recirculation-in-alcohol-biodiesel-aspirated-research-diesel-engine
#3
Arulprakasajothi Mahalingam, Dinesh Babu Munuswamy, Yuvarajan Devarajan, Santhanakrishnan Radhakrishnan
In this study, the effect of blending pentanol to biodiesel derived from mahua oil on emissions and performance pattern of a diesel engine under exhaust gas recirculation (EGR) mode was examined and compared with diesel. The purpose of this study is to improve the feasibility of employing biofuels as a potential alternative in an unmodified diesel engine. Two pentanol-biodiesel blends denoted as MOBD90P10 and MOBD80P20 which matches to 10 and 20 vol% of pentanol in biodiesel, respectively, were used as fuel in research engine at 10 and 20% EGR rates...
February 21, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29461685/enzymatic-production-of-biodiesel-strategies-to-overcome-methanol-inactivation
#4
REVIEW
Marina Lotti, Jürgen Pleiss, Francisco Valero, Pau Ferrer
Lipase-catalyzed transesterification of triglycerides and alcohols to obtain biodiesel is an environmentally friendly and sustainable route for fuels production since, besides proceeding in mild reaction conditions, it allows for the use of low-cost feedstocks that contain water and free fatty acids, for example non-edible oils and waste oils. In this contribution, we report on recent advances in the field and focus in particular on a major issue in the enzymatic process, the inactivation of most lipases caused by methanol, the preferred acyl acceptor used for alcoholysis...
February 20, 2018: Biotechnology Journal
https://www.readbyqxmd.com/read/29459513/hydrogel-templated-solid-base-catalysts-for-transesterification-of-soybean-oil
#5
Titiya Meechai, Sasinida Kongchamdee, Win Win Mar, Ekasith Somsook
A new method for utilization of hydrogel is proposed here for the preparation of solid base catalysts for the transesterification of vegetable oil. When a solution of KF is mixed with a solution of Ca(NO3 )2 , CaF2 is obtained and inactive as a catalyst in the transesterification of vegetable oils. The catalysts were synthesized by the sequential incorporation of KF and/or Ca(NO3 )2 solutions into the hydrogel upon microwave irradiation and then the as-obtained hydrogel was calcined at 800°C for 5 hours to eliminate the template and yield catalysts for the biodiesel productions...
February 19, 2018: Journal of Oleo Science
https://www.readbyqxmd.com/read/29459105/sequestration-and-utilization-of-carbon-dioxide-by-chemical-and-biological-methods-for-biofuels-and-biomaterials-by-chemoautotrophs-opportunities-and-challenges
#6
REVIEW
Indu Shekhar Thakur, Manish Kumar, Sunita J Varjani, Yonghong Wu, Edgard Gnansounou, Sindhu Ravindran
To meet the CO2 emission reduction targets, carbon dioxide capture and utilization (CCU) comes as an evolve technology. CCU concept is turning into a feedstock and technologies have been developed for transformation of CO2 into useful organic products. At industrial scale, utilization of CO2 as raw material is not much significant as compare to its abundance. Mechanisms in nature have evolved for carbon concentration, fixation and utilization. Assimilation and subsequent conversion of CO2 into complex molecules are performed by the photosynthetic and chemolithotrophic organisms...
February 10, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29454172/toxicity-of-lanthanum-oxide-nanoparticles-to-the-fungus-moniliella-wahieum-y12-t-isolated-from-biodiesel
#7
Lin Zhang, Lingyan Zhou, Qing X Li, Hong Liang, Huaming Qin, Stephen Masutani, Brandon Yoza
Moniliella wahieum Y12 T , isolated from biodiesel was used as a model organism to assess the use of lanthanum oxide (La 2 O 3 ) (60-80 nm) and silver oxide (AgO) (10-40 nm) nanoparticles as potential fungal inhibitors. This is the first study to investigate the use of nanoscale La 2 O 3 as a eukaryotic bio-inhibitor. The AgO nanoparticles were relatively effective at inhibiting the growth of M. wahieum Y12 T . The half maximal effective concentration (EC 50 ) for AgO was 0.012 mg/mL as compared with 4.63 mg/mL of La 2 O 3 ...
February 8, 2018: Chemosphere
https://www.readbyqxmd.com/read/29448733/quantitative-image-analysis-of-carbon-nanostructure-of-particles-produced-from-combustion-process
#8
Seuk-Cheun Choi, Seul-Hyun Park
In the present study, the soot particles produced from diffusion flames burning biodiesel fuel were thermophoretically sampled and the carbon nanostructure of soot particles were imaged using a high resolution transmission electron microscopy (HRTEM). The HRTEM images of soot particles were then quantitatively analyzed using a digital image processing algorithm developed and implemented as part of this work. The HRTEM interpretations with an aid of image processing support feasibility of use of the developed image processing technique for carbon nanostructure quantification...
March 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29447227/probiotic-effect-of-pichia-pastoris-x-33-produced-in-parboiled-rice-effluent-and-ypd-medium-on-broiler-chickens
#9
Diego Gil de Los Santos, João Rodrigo Gil de Los Santos, Carlos Gil-Turnes, Giana Gaboardi, Luiza Fernandes Silva, Rodrigo França, Cristina Gevehr Fernandes, Fabricio Rochedo Conceição
In a previous paper we showed that the yeast Pichia pastoris X-33 grown in parboiled rice effluent supplemented with glycerol byproduct from the biodiesel industry improved the quality of the effluent. In this paper we show the validation of this yeast (PPE) as probiotic for broilers. Its effect on feed efficiency and immunomodulation was compared with the same yeast grown in yeast peptone dextrose medium (PPY), with Saccharomyces boulardii (SBY) and with the controls fed unsupplemented feed (CON). One-day-old female chicks were vaccinated against infectious bursal disease (IBD) and the titers of anti-IBD antibodies were measured by ELISA...
2018: PloS One
https://www.readbyqxmd.com/read/29444681/fermentative-hydrogen-production-using-pretreated-microalgal-biomass-as-feedstock
#10
REVIEW
Jianlong Wang, Yanan Yin
Microalgae are simple chlorophyll containing organisms, they have high photosynthetic efficiency and can synthesize and accumulate large quantities of carbohydrate biomass. They can be cultivated in fresh water, seawater and wastewater. They have been used as feedstock for producing biodiesel, bioethanol and biogas. The production of these biofuels can be integrated with CO 2 mitigation, wastewater treatment, and the production of high-value chemicals. Biohydrogen from microalgae is renewable. Microalgae have several advantages compared to terrestrial plants, such as higher growth rate with superior CO 2 fixation capacity; they do not need arable land to grow; they do not contain lignin...
February 14, 2018: Microbial Cell Factories
https://www.readbyqxmd.com/read/29442635/solvent-free-transesterification-of-glycerol-into-glycerol-carbonate-over-nanostructured-caal-hydrotalcite-catalyst
#11
Arulselvan Devarajan, Sivakumar Thiripuranthagan, Ramakrishnan Radhakrishnan, Sakthivel Kumaravel
Drastic increase in green house gases due to fossil fuels usage urges the mankind to look for alternative fuel resources. Biodiesel is one of the alternative fuels which attracted the attention of many researchers. In recent years, bio-diesel drags much attention as an alternative clean fuel. Glycerol is an unavoidable byproduct in the transesterification process of vegetable oils into bio diesel and therefore market is flooded with glycerol. So it is high time to find ways of utilizing the abundant glycerol into value added products...
July 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29441127/time-series-lipidomic-analysis-of-the-oleaginous-green-microalga-species-ettlia-oleoabundans-under-nutrient-stress
#12
E K Matich, M Ghafari, E Camgoz, E Caliskan, B A Pfeifer, B Z Haznedaroglu, G E Atilla-Gokcumen
Background: Microalgae are uniquely advantageous organisms cultured and harvested for several value-added biochemicals. A majority of these compounds are lipid-based, such as triacylglycerols (TAGs), which can be used for biofuel production, and their accumulation is most affected under nutrient stress conditions. As such, the balance between cellular homeostasis and lipid metabolism becomes more intricate to achieve efficiency in bioproduct synthesis. Lipidomics studies in microalgae are of great importance as biochemical diversity also plays a major role in lipid regulation among oleaginous species...
2018: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29433435/growth-and-metabolic-characteristics-of-oleaginous-microalgal-isolates-from-nilgiri-biosphere-reserve-of-india
#13
Kalaiselvi Thangavel, Preethi Radha Krishnan, Srimeena Nagaiah, Senthil Kuppusamy, Senthil Chinnasamy, Jude Sudhagar Rajadorai, Gopal Nellaiappan Olaganathan, Balachandar Dananjeyan
BACKGROUND: Renewable energy for sustainable development is a subject of a worldwide debate since continuous utilization of non-renewable energy sources has a drastic impact on the environment and economy; a search for alternative energy resources is indispensable. Microalgae are promising and potential alternate energy resources for biodiesel production. Thus, our efforts were focused on surveying the natural diversity of microalgae for the production of biodiesel. The present study aimed at identification, isolation, and characterization of oleaginous microalgae from shola forests of Nilgiri Biosphere Reserve (NBR), the biodiversity hot spot of India, where the microalgal diversity has not yet been systematically investigated...
January 3, 2018: BMC Microbiology
https://www.readbyqxmd.com/read/29433318/first-time-determination-of-important-catalyst-sodium-methoxide-used-in-biodiesel-by-colorimetric-method
#14
Sabir Khan, Matthieu Tubino, Marta M D C Villa, Flavio A Bastos
A simple and selective spectrophotometric method for the first time has been developed for the determination of sodium methoxide in methanol solution in the presence of sodium hydroxide. he developed method involves the formation of a pink species by the reaction between sodium methoxide and α-santonin. The pink color compound formed shows absorbance maximum at 513 nm. N,N-dimetilformamide and methanol were used as solvents and the reaction was performed at different temperature and 25ºC was selected for further experiment...
February 13, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29429661/sonochemical-synthesis-of-a-new-nano-sized-barium-coordination-polymer-and-its-application-as-a-heterogeneous-catalyst-towards-sono-synthesis-of-biodiesel
#15
Faezeh Moghzi, Janet Soleimannejad
A new nano-sized barium coordination polymer, {(bipyH)[Ba2(pydc)2(Hpydc)(H2O)2]}n·nH2O (1), (bipy = 4,4'-bipyridine and H2pydc = pyridine-2,6-dicarboxylic acid), has been sonochemically synthesized and fully characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRPD), FT-IR spectroscopy, thermogravimetric analysis (TGA) and elemental analyses. Compound 1 was structurally characterized by single crystal X-ray diffraction and it was shown that this compound consists of 1D anionic coordination polymers and bipyH+ cationic species that construct a three-dimensional supramolecular architecture via non-covalent interactions i...
April 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29428852/efficiency-analysis-of-bioenergy-potential-on-winter-fallow-fields-a-case-study-of-rape
#16
Luo Liu, Xinliang Xu, Yueming Hu, Zhenjie Liu, Zhi Qiao
Rape is a non-grain feedstock with several characteristics that make it suitable for biofuel production, such as high oil yields and low environmental impact. Planting rape on winter fallow fields could allow for seasonal rotation between the bioenergy production and agricultural production. In the present study, the Global Agro-Ecological Zones model was used to estimate the production potential of rapeseed on winter fallow fields in the Yangtze River region from 2010 to 2015. Life cycle assessment was then conducted to calculate energy efficiency and greenhouse gas emissions from the entire energy-producing process and to estimate the number of bioenergy enterprises and their spatial distribution...
February 8, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29428782/aromatic-hydrocarbon-biodegradation-activates-neutral-lipid-biosynthesis-in-oleaginous-yeast
#17
Farha Deeba, Vikas Pruthi, Yuvraj S Negi
In this study, the biodegradation ability of oleaginous yeast Cryptococcus psychrotolerans IITRFD for aromatic hydrocarbons (AHs) was investigated. It was found to completely degrade range of AHs such as 1 g/L phenol, 0.75 g/L naphthalene, 0.50 g/L anthracene and 0.50 g/L pyrene with lipid productivity (g/L/h) of 0.0444, 0.0441, 0.0394 and 0.0383, respectively. This work demonstrated the ring cleavage pathways of AHs by this yeast which follow ortho route for phenol and naphthalene while meta route for anthracene and pyrene degradation...
January 31, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29426164/scope-model-applied-for-rapeseed-in-spain
#18
Nuria Pardo, M Luisa Sánchez, Zhongbo Su, Isidro A Pérez, M Angeles García
The integrated SCOPE (Soil, Canopy Observation, Photochemistry and Energy balance) model, coupling radiative transfer theory and biochemistry, was applied to a biodiesel crop grown in a Spanish agricultural area. Energy fluxes and CO2 exchange were simulated with this model for the period spanning January 2008 to October 2008. Results were compared to experimental measurements performed using eddy covariance and meteorological instrumentation. The reliability of the model was proven by simulating latent (LE) and sensible (H) heat fluxes, soil heat flux (G), and CO2 exchanges (NEE and GPP)...
January 29, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29425142/optimal-hydrogen-production-coupled-with-pollutant-removal-from-biodiesel-wastewater-using-a-thermally-treated-tio%C3%A2-photocatalyst-p25-influence-of-the-operating-conditions
#19
Pimsuda Pansa-Ngat, Trin Jedsukontorn, Mali Hunsom
This work aimed to produce hydrogen (H₂) simultaneously with pollutant removal from biodiesel wastewater by photocatalytic oxidation using a thermally-treated commercial titanium dioxide (TiO₂) photocatalyst at room temperature (~30 °C) and ambient pressure. The effects of the operating conditions, including the catalyst loading level (1-6 g/L), UV light intensity (3.52-6.64 mW/cm²), initial pH of the wastewater (2.3-8.0) and reaction time (1-4 h), on the quantity of H₂ production together with the reduction in the chemical oxygen demand (COD), biological oxygen demand (BOD) and oil and grease levels were explored...
February 9, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29424627/bioprospecting-microbes-for-single-cell-oil-production-from-starchy-wastes
#20
Shivani Chaturvedi, Arti Kumari, Lata Nain, Sunil K Khare
Production of lipid from oleaginous yeast using starch as carbon source is not a common practice, therefore the purpose of this investigation was to explore the capability of starch assimilating microbes to produce oil, which was determined in terms of biomass weight, productivity & lipid yield. Saccharomyces pastorianus, Rhodotorula mucilaginosa, R. glutinis, and fungal isolate Ganoderma wiiroense were screened for the key parameters. The optimization was also carried out by one factor at a time approach. Considering the specific yield of lipid and cell dry weight yield, R...
February 9, 2018: Preparative Biochemistry & Biotechnology
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