Related Experiment Video
Updated: Jun 17, 2026
10:42
Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
Published on: August 10, 2016
Bioethanol from lignocelluloses: Status and perspectives in Brazil
Carlos Ricardo Soccol1, Luciana Porto de Souza Vandenberghe, Adriane Bianchi Pedroni Medeiros
1Bioprocess Engineering and Biotechnology Department, Federal University of Paraná, Curitiba, PR, Brazil. soccol@ufpr.br
Bioresource Technology
|December 22, 2009
Summary
Brazil
Area of Science:
- Sustainable energy
- Biotechnology
- Environmental science
Background:
- Brazil's National Alcohol Program (PróAlcool), established in 1975, significantly reduced fossil fuel dependency.
- Ethanol-blend gasoline decreased oil imports by 550 million barrels and CO2 emissions by 110 million tons.
- Currently, 44% of Brazil's energy matrix is renewable, with 13.5% from sugarcane.
Purpose of the Study:
- To detail Brazilian institutions' and research groups' advancements in second-generation bioethanol production.
- To highlight the potential of sugarcane bagasse as a feedstock for advanced ethanol generation.
Main Methods:
- Analysis of Brazil's energy matrix and land use for sugarcane cultivation.
- Review of research efforts in second-generation bioethanol production from sugarcane bagasse.
- Projection of future ethanol yields based on bagasse conversion technologies.
Main Results:
- Sugarcane occupies only 0.9% of Brazil's agricultural land, indicating substantial expansion potential.
- Potential for increased ethanol yield to 10,000 L/ha through bagasse conversion.
- Brazil's commitment to renewable energy sources, with significant contributions from sugarcane.
Conclusions:
- Brazil demonstrates a successful model for integrating biofuels into its national energy strategy.
- Second-generation bioethanol from sugarcane bagasse offers a promising pathway for enhanced sustainable energy production.
- Continued research and development are crucial for optimizing second-generation bioethanol yields and processes.
Related Concept Videos
01:25Biofuels
The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...
01:27Production of Alcohol
Continuous fermentation is a key strategy in industrial ethanol production, particularly when efficiency, scalability, and high yields are essential. This approach allows for uninterrupted operation and optimized resource utilization. The primary feedstock, corn starch, undergoes enzymatic hydrolysis facilitated by α-amylase and glucoamylase. These enzymes break down the starch into fermentable sugars such as glucose, which are readily assimilated by fermentative microorganisms.Fermentation...
01:22Bioreactor Controls-III
Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...
01:27Bioplastics
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
01:20Fates of Pyruvate
Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
01:25Production of Organic Acids
Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...