Related Experiment Video
Updated: Aug 17, 2025
08:10
Scalable Step-by-Step Approach of Sustainable Bioplastic Production from Food Waste
Published on: July 18, 2025
189
Bread Surplus: A Cumulative Waste or a Staple Material for High-Value Products?
Ines Ben Rejeb1, Ichrak Charfi2, Safa Baraketi3
1Department of Biological and Chemical Engineering, LR05ES08 Laboratory of Microbial Ecology and Technology, National Institute of Applied Sciences and Technology (INSAT), University of Carthage, BP 676, Tunis 1080, Tunisia.
Molecules (Basel, Switzerland)
|December 11, 2022
Summary
Bread waste, a significant environmental and economic issue, can be transformed into valuable products like ethanol and glucose-fructose syrup. This review explores various technological methods for bread waste valorization, promoting resource recovery and reducing landfill burden.
Area of Science:
- Biotechnology
- Materials Science
- Environmental Science
Background:
- Food waste valorization is crucial for developing sustainable materials.
- Bread waste presents a major global challenge with significant environmental and economic impacts, exacerbated by rising cereal prices.
- Bread waste is rich in polysaccharides, making it suitable for various biotechnological applications.
Purpose of the Study:
- To review the re-use and valorization of bread waste as a valuable resource.
- To highlight technological processes for creating value-added products from surplus bread.
- To assess the role of technology in maximizing resource recovery and reducing landfill waste.
Main Methods:
- Review of existing research on bread waste transformation.
- Analysis of various technological processes for waste valorization.
- Discussion of studies reporting the conversion of bread waste into diverse products.
Main Results:
- Bread waste can be transformed into ethanol, lactic acid, succinic acid, biohydrogen, hydroxymethylfurfural, proteins, pigments, glucose-fructose syrup, aroma compounds, and enzymes.
- Numerous technological approaches exist for bread waste valorization.
- Effective recycling of bread waste contributes to environmental sustainability.
Conclusions:
- Technological advancements are key to maximizing resource recovery from bread waste.
- Valorization of bread waste offers a sustainable solution to reduce environmental impact.
- Repurposing bread waste into value-added products enhances economic efficiency and environmental performance.
Related Concept Videos
01:21Wood Products
121
Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
121
01:01Production Efficiency
17.0K
Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).
17.0K
02:52Predicting Products: Substitution vs. Elimination
11.9K
When a nucleophile and an alkyl halide react, nucleophilic substitution and β-elimination reactions compete to generate products.
The following factors can influence the mechanisms competing against each other:
The following factors can influence the mechanisms competing against each other:
11.9K
01:25Yield Criteria for Ductile Materials under Plane Stress
209
In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
The Maximum Shearing Stress Criterion, also known as...
209
01:21Plastic Behavior
247
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
247
01:10Moisture Content and Bulking of Aggregate
196
The moisture content of aggregates is a crucial factor in construction, particularly in concrete mixing, as it influences the total water required in the mix. Moisture content represents the water coated on the exterior surface of the aggregate existing in a saturated and surface-dry condition. The total water content of a moist aggregate is the sum of its moisture content and water absorption.
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...
196