Compostable vs Biodegradable Packaging: Complete Guide for Food Service

Compostable and biodegradable are two of the most frequently misused terms in sustainable packaging. For restaurants, horeca distributors, food brands and packaging buyers, the confusion between these terms has real commercial and compliance consequences: choosing a material described as "biodegradable" when your operation requires certified compostable packaging can result in failed waste management audits, non-compliance with EU procurement requirements, and greenwashing exposure.

This guide provides a complete, accurate explanation of the difference between compostable and biodegradable packaging — covering the science, the certifications, the regulatory landscape, and the practical implications for food service operations sourcing sustainable packaging for EU markets.

For an overview of how compostable packaging compares to smart packaging and biodegradable plastics across different applications, see our guide: Smart vs Biodegradable vs Compostable Packaging.

What Does Biodegradable Mean?

Biodegradable describes any material that can be broken down by microorganisms — bacteria, fungi and other biological agents — into simpler natural substances including water, carbon dioxide and biomass. This is a chemical and biological process that occurs in nature for virtually all organic materials given sufficient time and conditions.

The critical limitation of the term "biodegradable" is that it carries no time constraint and no requirement for the end products of degradation to be safe or useful. A material that takes 500 years to break down in specific conditions is technically biodegradable. A material that partially degrades but leaves behind toxic residue or microplastic fragments is technically biodegradable. Conventional plastic is technically biodegradable over geological timeframes.

This means "biodegradable" as a standalone claim on packaging tells a buyer very little about:

• How long the material will actually take to break down under real-world conditions
• What conditions are required for breakdown to occur
• What the breakdown products are and whether they are safe
• Whether the material is recyclable or compostable under available waste infrastructure

For EU market operations, unsubstantiated "biodegradable" claims on packaging are increasingly subject to greenwashing scrutiny under the EU Green Claims Directive, which requires environmental claims to be substantiated by specific verified evidence.

What Does Compostable Mean?

Compostable is a specific subset of biodegradable with defined performance requirements. Compostable packaging must meet verified standards that specify the timeframe, conditions and end-product quality of the biodegradation process.

Under the EU's primary compostability standard EN13432, a packaging material is compostable if it meets all four of these criteria under industrial composting conditions:

• Biodegradation: at least 90 percent of the organic carbon must convert to CO2 within 6 months
• Disintegration: no more than 10 percent of the original dry weight may remain on a 2mm sieve after 12 weeks
• Eco-toxicity: the resulting compost must not have toxic effects on plant growth — verified by plant germination and growth tests
• Chemical safety: heavy metal content must be below defined limits with no harmful substances present above threshold levels

This means a certified compostable material has been independently tested and verified to break down completely, safely and within a defined timeframe under industrial composting conditions. This is a fundamentally different claim from "biodegradable".

The Core Difference: Time, Conditions and End Products

The practical difference between biodegradable and compostable packaging comes down to three factors: how long it takes to break down, what conditions are required, and what the breakdown produces.

Industrial Composting vs Home Composting

Within certified compostable packaging, there is a further important distinction: industrial composting and home composting operate at different temperatures and conditions, and not all materials certified for industrial composting will break down adequately in a home compost system.

Industrial Composting

Industrial (also called municipal) composting operates at temperatures of 55 to 60°C with controlled moisture, oxygen levels and microbial activity. These elevated temperatures accelerate biodegradation significantly and are what EN13432 certification is based on. Certified industrial compostable materials break down within the required 6-month timeframe at these temperatures.

For food service operations, industrial composting is the relevant end-of-life pathway when food waste composting collection is available. EU markets with food waste collection infrastructure — including the UK, Germany, the Netherlands and several other member states — increasingly accept certified compostable food packaging alongside food waste in collection programs.

Home Composting

Home composting operates at significantly lower temperatures — typically 20 to 35°C — with less controlled conditions. Materials that break down within 6 months at 55°C may take significantly longer at 25°C or may not fully disintegrate within a home composting timeframe.

OK COMPOST HOME certification, issued by TÜV Austria, specifically tests compostability under home composting conditions. This is a stricter certification for consumer-facing claims, confirming that the material breaks down adequately even in a garden compost pile without industrial infrastructure.

What This Means for Food Service Sourcing

For food service operations, EN13432 industrial compostable certification is the relevant standard for procurement documentation and EU market compliance. For operations that want to make explicit home compostability claims to consumers, OK COMPOST HOME provides the additional certification needed.

Common Biodegradable and Compostable Materials in Food Service

Understanding how specific materials map to biodegradable and compostable categories helps operators make informed sourcing decisions.

Bagasse (Sugarcane Fiber)

Bagasse is a genuinely compostable material. Certified bagasse food containers break down under EN13432 industrial composting conditions within the required timeframe, producing compost, water and CO2 with no toxic residue. Bagasse is also biodegradable in the broader sense — it will break down in landfill conditions, though more slowly than under industrial composting. Bagasse food containers carry EN13432 certification and are a verified compostable material for food service procurement.

PLA (Polylactic Acid)

PLA is a bioplastic manufactured from plant starch (typically corn or sugarcane). It is biodegradable and can be certified to EN13432 as industrially compostable. However, PLA has significant limitations: it requires the elevated temperatures of industrial composting (55 to 60°C) to break down within the certified timeframe. At lower temperatures — including home composting environments and landfill conditions — PLA degrades very slowly, similarly to conventional plastic over practical timescales. PLA is not recyclable in standard paper or plastic streams. It is also not suitable for hot food applications above approximately 45 to 55°C due to its low heat deflection temperature.

Molded Fiber (Paper-Based)

Molded fiber lids and containers made from paper pulp are compostable under both industrial and home composting conditions. They are also recyclable in standard paper streams if food contamination is below threshold levels. Molded fiber lids provide a practical certified compostable alternative to plastic cup lids for café and food service operations.

Paper with Water-Based Coating

Paper packaging with water-based coating contains no plastic and is both recyclable in standard paper streams and compostable. This includes water-based coated paper cups and greaseproof paper without PE or PFAS treatment. Ekoroll's lid-free hot cups and greaseproof paper use water-based coating for this reason.

PE-Coated Paper

PE-coated paper is technically biodegradable over very long timeframes, but it is neither compostable nor recyclable in standard paper streams. The PE (polyethylene) plastic coating prevents composting within EN13432 timeframes and prevents recycling. Despite appearing to be a paper product, PE-coated packaging behaves as a plastic-containing material at end of life.

Wooden and Bamboo Cutlery

Both wooden and bamboo cutlery are biodegradable and compostable under industrial and home composting conditions. They do not require industrial composting temperatures to break down — both materials will decompose in garden composting over time. Wooden and bamboo cutlery are the primary EU SUP Directive-compliant replacement for single-use plastic cutlery.

EU Regulatory Framework

For food service operators and distributors in European markets, the regulatory requirements around compostable and biodegradable packaging claims are tightening significantly.

EU Green Claims Directive

The EU Green Claims Directive, entering implementation from 2026, requires that all environmental claims on products and packaging be substantiated by specific, verified evidence. Generic claims such as "biodegradable", "eco-friendly" or "natural" without substantiation will be prohibited. Claims based on EN13432 or equivalent certified standards will be considered substantiated. This means unverified biodegradable claims are becoming a legal compliance risk rather than just a marketing issue.

EU Single-Use Plastics Directive

The EU SUP Directive restricts or bans specific single-use plastic food packaging formats. Certified compostable materials that meet EN13432 are compliant alternatives for the relevant restricted formats. Biodegradable plastics without certified compostability — including some materials marketed as "bioplastic" — are not automatically exempt from SUP Directive restrictions, as the restriction is based on plastic content, not biodegradability.

EU Packaging and Packaging Waste Regulation

The PPWR, entering implementation from 2025, introduces binding recyclability requirements for packaging placed on the EU market. For food contact applications where recyclability is limited by contamination, certified compostable packaging with defined end-of-life pathways is well-positioned under the PPWR framework compared to non-recyclable conventional plastic formats.

Key Certifications for EU Market Supply

• EN13432 — the primary European standard for industrial compostability. Required for substantiated compostable claims in EU markets
• OK COMPOST INDUSTRIAL — TÜV Austria certification confirming EN13432 compliance
• OK COMPOST HOME — TÜV Austria certification confirming home composting performance
• BPI — Biodegradable Products Institute certification for North American markets

Practical Implications for Food Service Operations

For restaurants, food delivery operations and horeca distributors, the biodegradable vs compostable distinction has direct operational implications.

Waste Management Documentation

Operations participating in food waste composting programs — whether for compliance, ESG reporting or waste diversion targets — need certified compostable packaging, not just biodegradable packaging. Industrial composting operators typically accept only EN13432 certified materials alongside food waste. Materials labeled "biodegradable" without EN13432 certification are typically rejected by composting facilities.

B2B Procurement Requirements

Corporate food service accounts, hotel chains and retail brands increasingly specify certified compostable packaging as a procurement condition for supplier qualification. EN13432 certification is the document required to demonstrate compliance. Biodegradable claims without certification do not satisfy these procurement requirements.

Consumer Communication

Under the EU Green Claims Directive, telling customers that packaging is "biodegradable" without specific certification will become a greenwashing violation. EN13432 certified compostable claims, substantiated by the certification, are the legally defensible environmental communication for food packaging in EU markets.

Choosing the Right Packaging for Your Operation

• Hot food containers and meal boxes: certified compostable bagasse — best performance and verified compostability
• Beverage cups: water-based coated paper cups — recyclable and compostable, no plastic lining
• Cup lids: certified compostable molded fiber lids or lid-free cup formats
• Cutlery: wooden or bamboo — biodegradable, compostable and EU SUP Directive compliant
• Wrapping paper: PFAS-free greaseproof paper — recyclable and compostable, no plastic coating