ISO Proposes PDCAAS Labeling for Plant-Based Protein Foods

International Standardization Organization (ISO) Food Technical Committee (TC 34) has released the Committee Draft (CD) ISO/DIS 20985 on 21 April 2026, proposing mandatory labeling of Protein Digestibility-Corrected Amino Acid Score (PDCAAS) on plant-based protein products—including plant-based meats, soy protein powders, and pea protein isolates. This development signals a potential shift in global labeling requirements and carries direct implications for manufacturers, importers, and standard-setting bodies in China and other markets.

Event Overview

On 21 April 2026, ISO/TC 34 published CD draft ISO/DIS 20985, which proposes that labels of plant-based protein foods must declare their PDCAAS value. The draft is currently at the Committee Draft stage—not yet an official International Standard. On the same day, the China National Food Industry Association announced it had initiated domestic translation and adaptation research, with the aim of developing a GB/T recommended national standard by end-2026.

Industries Affected

Plant-Based Food Manufacturers

Manufacturers producing plant-based meats, protein powders, or fortified snacks will face new labeling obligations if the draft progresses to final standard status. Impact includes reformulation documentation, third-party PDCAAS testing, and label redesign—particularly where products are exported to jurisdictions adopting ISO-aligned regulations.

Ingredient Suppliers (e.g., Soy, Pea, Fava Protein Producers)

Suppliers of isolated or concentrated plant proteins may be required to provide validated PDCAAS data to downstream customers. This could necessitate additional analytical capacity or certification partnerships, especially for B2B contracts referencing ISO/DIS 20985 as a compliance benchmark.

Importers and Exporters of Plant Protein Products

Trade entities handling cross-border shipments—especially between China, EU, and North America—must monitor whether importing countries reference ISO/DIS 20985 in future regulatory updates. Label noncompliance may lead to customs delays or rejection, particularly if destination markets adopt the standard ahead of harmonized implementation timelines.

Contract Manufacturers and Co-Packers

Facilities producing private-label or OEM plant protein products may need updated technical agreements specifying responsibility for PDCAAS verification, label compliance, and data traceability—especially when serving clients targeting multiple export markets.

What Enterprises and Practitioners Should Monitor and Do Now

Track the formal progression of ISO/DIS 20985 through the ISO approval pipeline

The draft remains at CD stage; its advancement to DIS (Draft International Standard), FDIS (Final Draft), and eventual publication is not guaranteed. Stakeholders should subscribe to ISO/TC 34 notifications and review voting outcomes during upcoming committee meetings.

Identify high-priority product categories and export markets

Initial focus should fall on products with explicit protein nutrition claims (e.g., “high-protein”, “complete protein”) and those destined for markets where food labeling regulation is under active revision—such as the EU’s ongoing review of novel food and protein labeling frameworks.

Distinguish between policy signal and enforceable requirement

ISO standards are voluntary unless adopted into national law or referenced in regulatory texts. At present, ISO/DIS 20985 carries no legal force. Companies should avoid premature capital expenditure on PDCAAS testing infrastructure until alignment with GB/T or other jurisdictional mandates becomes clear.

Begin internal alignment on test method consistency and data sourcing

PDCAAS calculation relies on standardized digestibility assays and amino acid profiling. Enterprises should assess current lab capabilities—or identify accredited providers—capable of delivering ISO-compliant PDCAAS reports, noting that methodology harmonization (e.g., FAO/WHO 2013 guidelines) remains foundational.

Editorial Perspective / Industry Observation

From an industry perspective, ISO/DIS 20985 is best understood as a regulatory signal—not yet a compliance trigger. Its significance lies less in immediate enforcement and more in its role as a coordination mechanism across fragmented national approaches to plant protein quality communication. Analysis suggests this draft reflects growing consensus among food science bodies that protein quality—not just quantity—should inform consumer-facing labeling. However, adoption velocity will vary: while China’s GB/T timeline implies intent to align, actual market-level implementation will depend on technical readiness, enforcement capacity, and inter-agency coordination within national food safety authorities. Current momentum indicates sustained attention is warranted—but not urgent operational overhaul.

Conclusion
This proposal marks a step toward greater transparency in plant-based protein nutrition communication. It does not yet constitute a binding requirement, but it does initiate a multi-year alignment process across standards bodies, regulators, and industry. For now, it is more accurately interpreted as a preparatory milestone than a compliance deadline—warranting monitoring, selective preparation, and methodological groundwork rather than broad-scale operational change.

Information Sources
Main source: ISO/TC 34 official announcement of CD ISO/DIS 20985 (21 April 2026); China National Food Industry Association public statement (21 April 2026).
Note: The status of ISO/DIS 20985 remains subject to further ISO committee review and voting; its progression to final standard is pending and requires ongoing observation.