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Related Concept Videos

Production of Alcohol01:27

Production 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...
Biofuels01:25

Biofuels

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...
Bioreactor Controls-III01:22

Bioreactor 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...
Fates of Pyruvate01:20

Fates 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...
Production of Organic Acids01:25

Production 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...
Microbes in Beverage Production01:25

Microbes in Beverage Production

Alcoholic beverages such as wine, beer, and spirits are the products of microbial fermentation processes that transform simple sugars into ethanol and a wide array of complex flavor compounds. These transformations rely on the metabolic activities of specific yeasts and bacteria, which are selected and controlled to yield the desired beverage characteristics.Wine Fermentation and MaturationWine production begins with the crushing of grapes to release juice and pulp, forming a must that is...

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Related Experiment Video

Updated: Jun 12, 2026

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
10:42

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids

Published on: August 10, 2016

Key technologies for bioethanol production from lignocellulose.

Hongzhang Chen1, Weihua Qiu

  • 1State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China. hzchen@home.ipe.ac.cn

Biotechnology Advances
|June 16, 2010
PubMed
Summary

Economical and eco-friendly bioethanol production from straw requires integrated process improvements and high-value co-product development. New technologies and fractional conversion strategies enhance straw utilization for competitive biofuel generation.

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High-throughput Screening of Recalcitrance Variations in Lignocellulosic Biomass: Total Lignin, Lignin Monomers, and Enzymatic Sugar Release
11:31

High-throughput Screening of Recalcitrance Variations in Lignocellulosic Biomass: Total Lignin, Lignin Monomers, and Enzymatic Sugar Release

Published on: September 15, 2015

Area of Science:

  • Biotechnology
  • Chemical Engineering
  • Sustainable Energy

Background:

  • Current bioethanol production from straw faces economic and environmental challenges due to fragmented research approaches.
  • Lack of holistic consideration for straw characteristics hinders process optimization.
  • Need for integrated solutions addressing individual process steps and their synergistic combination.

Purpose of the Study:

  • To provide an overview of novel technologies and recent advancements in straw-based bioethanol production.
  • To highlight breakthroughs, particularly those from the authors' group, focusing on fractional conversion.
  • To introduce an eco-industrial multi-production pattern for enhanced efficiency and co-product generation.

Main Methods:

  • Review of recent technological advances in bioethanol production from lignocellulosic biomass.
  • Application of the fractional conversion concept for optimized straw utilization.
  • Development of an eco-industrial multi-production pattern integrating various high-value co-product streams.

Main Results:

  • Identification of key technological breakthroughs required for efficient straw-to-bioethanol conversion.
  • Demonstration of the efficacy of fractional conversion in improving process outcomes.
  • Establishment of a multi-production pattern yielding high-value co-products alongside bioethanol, enhancing overall economic viability.

Conclusions:

  • Integrated approaches and novel technologies are crucial for overcoming current limitations in straw bioethanol production.
  • The fractional conversion concept and multi-production patterns offer a pathway to economically competitive and environmentally sustainable bioethanol.
  • Future developments are expected to make bioethanol from straw a competitive biofuel option.