Production of Biofuels from Biomass Case Study

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Which type of biomass is structurally different from biofuels?

Sugar crops

Cereal crops

Lignocellulose (correct)

Sweet sorghum

What is the focus of the case study?

The advantages of traditional fuels over biofuels

The challenges of producing biofuels from biomass (correct)

The extraction process of bioethanol

The production process of bioethanol from sugar crops

What is described as the 'oldest' biofuel in the case study?

Bioethanol (correct)

Traditional fuels

Sugar beet

Isobutanol

Which platform is used for the production of bioethanol from wood and agricultural residues?

Cellulose platform Signup and view all the answers

What is the main focus of the Ehrlich pathway mentioned in the text?

Isobutanol production in micro-organisms Signup and view all the answers

What is the focus of microbial engineering approaches mentioned in the text?

Increasing isobutanol production in micro-organisms Signup and view all the answers

Which process involves the pretreatment of wood, grass, and agricultural residues for bioethanol production?

Pretreatment Signup and view all the answers

What is the importance of sustainable and renewable biofuels?

To reduce reliance on traditional fuels Signup and view all the answers

Which type of biofuel is described as more flexible and versatile compared to current biofuels?

1 Signup and view all the answers

What is the focus of metabolic engineering/synthetic biology in relation to biofuels?

Improving production and efficiency of biofuels Signup and view all the answers

What is the purpose of the milling step in the production of bioethanol from starch-containing cereals?

To release the starch components from the cereal grains Signup and view all the answers

What is the main function of saccharification in the production of bioethanol?

To convert oligosaccharides and dextrin into glucose Signup and view all the answers

During which step does the conversion of sugar into bioethanol and CO2 take place?

Fermentation Signup and view all the answers

What is the purpose of distillation and rectification in bioethanol production?

To concentrate and clean the ethanol produced by distillation Signup and view all the answers

What is the purpose of drying (dehydration) in bioethanol production?

To remove any remaining water from the bioethanol Signup and view all the answers

What is the primary role of α-amylase in the liquefaction process during bioethanol production?

To degrade starch into oligosaccharides and dextrin Signup and view all the answers

What happens to pyruvate under aerobic conditions during glycolysis-fermentation?

It enters Krebs cycle/oxidative phosphorylation Signup and view all the answers

What is the outcome of glycolysis-fermentation under anaerobic conditions in yeast?

It yields ethanol and CO2 Signup and view all the answers

What is the initial effect of low yeast cell concentration during fermentation?

Limited production of ethanol and CO2 Signup and view all the answers

What indicates that the fermentation has become very active during the next stage of fermentation?

Rapid ethanol, CO2, and energy production Signup and view all the answers