Podcast
Questions and Answers
What are the challenges posed by the global food processing industries?
What are the challenges posed by the global food processing industries?
Poor handling of residues, which are often discarded as waste.
What valuable compounds can be found in food processing byproducts?
What valuable compounds can be found in food processing byproducts?
Biopolymers, proteins, polysaccharides, lipids, pigments, micronutrients, and minerals.
Which of the following are applications of byproducts from food processing?
Which of the following are applications of byproducts from food processing?
The development of edible packaging materials competes with food resources.
The development of edible packaging materials competes with food resources.
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What is the aim of employing a zero-waste biorefinery approach?
What is the aim of employing a zero-waste biorefinery approach?
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What percentage of current plastics are petroleum-based?
What percentage of current plastics are petroleum-based?
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Study Notes
Sustainable Edible Packaging
- Global food processing poses environmental challenges due to residue disposal.
- Food byproducts are valuable resources for active compounds in sustainable packaging.
- Edible films and coatings from biopolymers and active compounds reduce plastic use.
- A zero-waste biorefinery approach improves waste management by minimizing waste and creating value-added compounds.
- Minimizing waste reduces pollution and dependency on petrochemical-based plastics
Food Waste
- One-third of food intended for human consumption is lost globally.
- Total food loss is estimated at 1.6 billion tonnes annually.
- FAO has developed a Food Loss Index and a Food Waste Index to measure food waste in supply chains.
- The amount of food wasted (or lost) around the world is a serious issue.
- A global initiative is needed to promote human well-being and sustainability.
Food Byproducts
- Byproducts from animal (livestock and poultry), fish and aquaculture, and agriculture are sources of valuable compounds.
- Discarded animal parts (Category 1) are not suitable for consumption or animal feed and should only be disposed of.
- Less risky byproducts (Category 2) might be used as fertilizers or compost.
- Safe byproducts (Category 3) can be used as animal feed, petfood, ingredients for cosmetics, and supplements.
Food Packaging
- Current plastics are mostly petroleum-based.
- Continuous use of petrochemical plastics has negative environmental impacts.
- Plastic-derived components have been found in various trophic levels.
- Edible films and coatings utilize food-grade components for active packaging.
- Active compounds can include antimicrobials, antioxidants, flavorings, and health-promoting compounds.
Edible Packaging Composition
- Edible films and coatings use biopolymers (polysaccharides, proteins, lipids), a solvent (usually water), and plasticizers.
- Additives improve mechanical, functional, sensory, and nutritional characteristics.
- Examples of biopolymers include chitosan, alginate, pectin, carrageenan, gelatin, and proteins.
Edible Film and Coating Formation
- Solvent casting and extrusion are common methods.
- Solvent casting involves dissolving biopolymers in a suitable solvent, pouring the solution into molds, and drying.
- Extrusion uses the thermoplastic behavior of polymers above the glass transition temperature for shaping.
Food Preservation and Packaging
- Edible films and coatings are used to extend shelf life, enhance quality, and inhibit food oxidation and spoilage microorganisms.
- Active compounds in the edible films and coatings can offer advantages in terms of antimicrobial and antioxidant activities.
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Description
This quiz explores the various challenges faced by global food processing industries, the valuable compounds found in processing byproducts, and applications of those byproducts. It also delves into the impact of edible packaging materials and the aim of a zero-waste biorefinery approach in sustainability efforts.
