scholarly journals Molecular Breeding of Advanced Microorganisms for Biofuel Production

2011 ◽  
Vol 2011 ◽  
pp. 1-11 ◽  
Author(s):  
Hiroshi Sakuragi ◽  
Kouichi Kuroda ◽  
Mitsuyoshi Ueda
Keyword(s):  
Fossil Fuels ◽  
Molecular Breeding ◽  
Surface Engineering ◽  
Cellulosic Biomass ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Solvent Tolerance ◽  
Sustainable Society ◽  
Cell Surface Engineering ◽  
Engineering Technology

Large amounts of fossil fuels are consumed every day in spite of increasing environmental problems. To preserve the environment and construct a sustainable society, the use of biofuels derived from different kinds of biomass is being practiced worldwide. Although bioethanol has been largely produced, it commonly requires food crops such as corn and sugar cane as substrates. To develop a sustainable energy supply, cellulosic biomass should be used for bioethanol production instead of grain biomass. For this purpose, cell surface engineering technology is a very promising method. In biobutanol and biodiesel production, engineered host fermentation has attracted much attention; however, this method has many limitations such as low productivity and low solvent tolerance of microorganisms. Despite these problems, biofuels such as bioethanol, biobutanol, and biodiesel are potential energy sources that can help establish a sustainable society.

scholarly journals Microbial Beta Glucosidase Enzymes: Recent Advances in Biomass Conversation for Biofuels Application

Biomolecules ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 220 ◽  
Author(s):  
Neha Srivastava ◽  
Rishabh Rathour ◽  
Sonam Jha ◽  
Karan Pandey ◽  
Manish Srivastava ◽  
...  
Keyword(s):  
Fossil Fuels ◽  
Biomass Conversion ◽  
Cost Effective ◽  
Cellulosic Biomass ◽  
Biofuel Production ◽  
Biomass Hydrolysis ◽  
Advanced Technique ◽  
Recent Developments ◽  
Beta Glucosidase ◽  
Made In

The biomass to biofuels production process is green, sustainable, and an advanced technique to resolve the current environmental issues generated from fossil fuels. The production of biofuels from biomass is an enzyme mediated process, wherein β-glucosidase (BGL) enzymes play a key role in biomass hydrolysis by producing monomeric sugars from cellulose-based oligosaccharides. However, the production and availability of these enzymes realize their major role to increase the overall production cost of biomass to biofuels production technology. Therefore, the present review is focused on evaluating the production and efficiency of β-glucosidase enzymes in the bioconversion of cellulosic biomass for biofuel production at an industrial scale, providing its mechanism and classification. The application of BGL enzymes in the biomass conversion process has been discussed along with the recent developments and existing issues. Moreover, the production and development of microbial BGL enzymes have been explained in detail, along with the recent advancements made in the field. Finally, current hurdles and future suggestions have been provided for the future developments. This review is likely to set a benchmark in the area of cost effective BGL enzyme production, specifically in the biorefinery area.

scholarly journals EDITORIAL

2007 ◽  
Vol 6 (1) ◽  
pp. 02
Author(s):  
J. V. C. Vargas
Keyword(s):  
Diesel Fuel ◽  
Sugar Cane ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Global Demand ◽  
Oil Productivity ◽  
Carbon Neutral ◽  
Near Future

Fossil fuels are currently recognized as unsustainable because of depleting supplies and the contribution of these fuels to the accumulation of carbon dioxide in the environment. Therefore, renewable, carbon neutral, alternative fuels are necessary for environmental and economic sustainability. Several countries have been considering the use of alternative fuels derived from agriculture. In that context, ethanol derived from sugar-cane and/or corn crops, and biodiesel derived from oil crops are potential renewable and carbon neutral alternatives to fossil fuels. Unfortunately, fuel from crops, waste and animal fat cannot realistically satisfy even a small fraction of the existing global demand for fuels. In Brazil, the government has been subsiding ethanol from sugar-cane crops for more than 30 years, and together with research investment on oil off-shore exploration, the initiative made possible for the country, at least for the moment, to become energy self sufficient, but due to oil supplies depletion, that scenery will change in the near future. Another limiting factor is cost. For example, the economic aspect of biodiesel production limits its development and large-scale use. Biodiesel usually costs almost twice the price per liter of conventional diesel fuel, currently in the US.Apart from economic aspects, it is clear that biofuel production technology needs to be improved to meet global fuel demand rate. One possible direction is the use of microalgae, that appear to be the only source of renewable biodiesel that is capable of meeting the diesel fuel global demand. Like plants, microalgae use sunlight to produce oils but they do so more efficiently than crop plants. Oil productivity of many microalgae greatly exceeds the oil productivity of the best producing oil crops.Approaches for making microalgal biodiesel economically competitive therefore need to be developed.The mission of Engenharia Térmica is to document the scientific progress in areas related to energy, particularly oil and renewables. We are confident we will continue to receive articles’ submissions that help enable sustainable energy solutions in the near future.

Molecular Breeding of Arming Yeasts with Hydrolytic Enzymes by Cell Surface Engineering

2005 ◽  
pp. 59-73 ◽  
Author(s):  
Mitsuyoshi Ueda ◽  
Toshiyuki Murai ◽  
Shouji Takahashi ◽  
Motohisa Washida ◽  
Atsuo Tanaka
Keyword(s):  
Cell Surface ◽  
Molecular Breeding ◽  
Surface Engineering ◽  
Hydrolytic Enzymes ◽  
Cell Surface Engineering

scholarly journals β-Glucosidases from the FungusTrichoderma: An Efficient Cellulase Machinery in Biotechnological Applications

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Pragya Tiwari ◽  
B. N. Misra ◽  
Neelam S. Sangwan
Keyword(s):  
Fossil Fuels ◽  
Structural Parameters ◽  
Renewable Energy Sources ◽  
Glycosyl Hydrolase ◽  
Cellulosic Biomass ◽  
Biofuel Production ◽  
Industrial Biotechnology ◽  
Genomics And Proteomics ◽  
Commercial Applications ◽  
Near Future

β-glucosidases catalyze the selective cleavage of glucosidic linkages and are an important class of enzymes having significant prospects in industrial biotechnology. These are classified in family 1 and family 3 of glycosyl hydrolase family.β-glucosidases, particularly from the fungusTrichoderma,are widely recognized and used for the saccharification of cellulosic biomass for biofuel production. With the rising trends in energy crisis and depletion of fossil fuels, alternative strategies for renewable energy sources need to be developed. However, the major limitation accounts for low production ofβ-glucosidases by the hyper secretory strains ofTrichoderma. In accordance with the increasing significance ofβ-glucosidases in commercial applications, the present review provides a detailed insight of the enzyme family, their classification, structural parameters, properties, and studies at the genomics and proteomics levels. Furthermore, the paper discusses the enhancement strategies employed for their utilization in biofuel generation. Therefore,β-glucosidases are prospective toolbox in bioethanol production, and in the near future, it might be successful in meeting the requirements of alternative renewable sources of energy.

scholarly journals CHALLENGES IN BIODIESEL INDUSTRY: SOCIO-ECONOMIC, OCCUPATIONAL HEALTH, AND POLICY ISSUES

2018 ◽  
Vol 8 (2) ◽  
Author(s):  
JELENA AVRAMOVIĆ ◽  
ANA VELIČKOVIĆ ◽  
VLADA VELJKOVIĆ
Keyword(s):  
Occupational Health ◽  
Working Conditions ◽  
Rural Areas ◽  
Fossil Fuels ◽  
Local Population ◽  
Health And Safety ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Black And White ◽  
Food Market

Faced with the problem of the depletion of fossil fuels, the concern about energy security, especially in the energy depended countries due to constant conflicts in the oil-exporting countries, as well as the climate change due to burning of fossil fuels, the society recognized biofuels as the solution to many of these problems. Namely, the growing biofuel sector could provide the possibility for the development of rural areas and creating job opportunities for the local population, contribute to the development of strong self-sufficient communities and reduce the emission of greenhouse gases due to the belief that the burning of biofuels was carbon neutral. However, over the years, some issues regarding biofuel production and use emerged, showing that it was not all “black and white”, and that some side effects, such as the influence of biofuels on energy and food market, working conditions and workers’ rights regarding occupational health, the inconsistency of biofuel policies, the land change, etc. should also be addressed to. Key words: biodiesel production, workers' rights, working conditions, occupational health and safety

Molecular Breeding of Polysaccharide-Utilizing Yeast Cells by Cell Surface Engineering

1998 ◽  
Vol 864 (1 ENZYME ENGINE) ◽  
pp. 528-537 ◽  
Author(s):  
MITSUYOSHI UEDA ◽  
TOSHIYUKI MURAI ◽  
YUMI SHIBASAKI ◽  
NAOMI KAMASAWA ◽  
MASAKO OSUMI ◽  
...  
Keyword(s):  
Cell Surface ◽  
Molecular Breeding ◽  
Surface Engineering ◽  
Yeast Cells ◽  
Cell Surface Engineering

scholarly journals Second Generation Biofuel – An Alternative Clean Fuel

2021 ◽  
Vol 7 (3) ◽  
pp. 13-21
Author(s):  
Shalu Patel ◽  
Savita Dixit ◽  
Kavita Gidwani Suneja ◽  
Nilesh Tipan
Keyword(s):  
Fossil Fuels ◽  
Second Generation ◽  
Agricultural Waste ◽  
Cellulosic Biomass ◽  
Biofuel Production ◽  
Food Sources ◽  
Renewable Energy Resources ◽  
Research And Innovation ◽  
Industrial Sectors ◽  
Generation Biofuel

Renewable energy resources are in high demand to decrease dependence on fossil fuels and mitigate greenhouse gas emissions. Biofuel industries, particularly bioethanol and biodiesel, have been rapidly increasing in tandem with agricultural production over more than a decade. First-generation biofuel manufacturing is heavily reliant on agriculture food sources like maize, sugarcane, sugar beets, soybeans, and canola.  As a result, the intrinsic competitiveness among foods and fuels has been a point of contention in community for the past couple of years. Existing technological advancements in research and innovation have paved the way for the manufacturing of next-generation biofuels from a variety of feedstock’s, including agricultural waste materials, crops remnants and cellulosic biomass from high-yielding trees and bushes varieties.  This report discusses the existing state of second-generation biofuel manufacturing as well as the feedstock utilized in fuel production, biofuel production globally and the current situation in India. This study also explores the current advancements in the findings and advancement of second-generation biofuel extraction from various feedstock’s. The forthcoming directions of agriculture and energy industrial sectors has also been addressed in order to feed the world 's growing population and to fuel the world's most energy-intensive industry, transportation.

Biodiesel production from non-edible oils: A review

2020 ◽  
pp. 149-159
Author(s):  
Jatinder Kataria ◽  
Saroj Kumar Mohapatra ◽  
Amit Pal
Keyword(s):  
Environmental Impact ◽  
Energy Demand ◽  
Fossil Fuels ◽  
World Wide ◽  
Edible Oils ◽  
Control Measure ◽  
Biodiesel Production ◽  
Pollution Level ◽  
Animal Fats ◽  
The World

The limited fossil reserves, spiraling price and environmental impact due to usage of fossil fuels leads the world wide researchers’ interest in using alternative renewable and environment safe fuels that can meet the energy demand. Biodiesel is an emerging renewable alternative fuel to conventional diesel which can be produced from both edible and non-edible oils, animal fats, algae etc. The society is in dire need of using renewable fuels as an immediate control measure to mitigate the pollution level. In this work an attempt is made to review the requisite and access the capability of the biodiesel in improving the environmental degradation.

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