Understanding Acid Value and Peroxide Value in Grade 1 Soybean Oil: Key to Export Quality under GB/T1535-2017

2026-03-03
Shandong Ruihe Douyuan Import & Export Co., Ltd.
Technical knowledge
This article explains how the acid value (≤0.3 mg KOH/g) and peroxide value (≤6.0 meq/kg) standards in China’s GB/T1535-2017 impact the safety, stability, and shelf life of cold-pressed aromatic soybean oil for international export. Learn why rigorous testing, ISO22000/HACCP compliance, and third-party certification like SGS/BV are essential for B2B buyers seeking reliable quality assurance—backed by real export cases and clear data-driven insights.

Understanding GB/T1535-2017: Why Acid Value & Peroxide Value Matter in Export-Grade Soybean Oil

For B2B buyers sourcing high-quality edible oils from China, understanding the technical standards behind your purchase is no longer optional—it’s essential. The GB/T1535-2017 standard sets clear benchmarks for first-grade soybean oil, particularly in two critical metrics: acid value and peroxide value.

What Do These Numbers Really Mean?

According to GB/T1535-2017:

  • Acid Value ≤ 0.3 mg KOH/g: Indicates minimal free fatty acids—signaling freshness and low oxidation during storage.
  • Peroxide Value ≤ 6.0 meq/kg: Measures early-stage oxidation; exceeding this level can lead to rancidity and off-flavors.

In practical terms? If a batch exceeds these values, it risks affecting taste, shelf life, and even food safety compliance in EU, Middle East, or North America markets. We’ve seen clients reject shipments simply because of inconsistent peroxide levels—even when the oil looked fine.

Did you know?

Industry averages often hover around 0.5–1.0 mg KOH/g for acid value—meaning our strict ≤0.3 ensures superior stability and flavor retention over time.

From Factory to Global Shelf: How Certification Builds Trust

We don’t just meet the standard—we exceed it. Every shipment includes an independent third-party test report from either SGS or Bureau Veritas (BV), confirming each batch meets both GB/T1535-2017 and international expectations like ISO 22000 and HACCP.

These certifications aren’t just checkboxes—they’re proof that our physical pressing process preserves natural aroma while minimizing impurities. No chemical refining means cleaner, more authentic flavor profiles that chefs and food processors appreciate.

“After switching to your soybean oil, we noticed fewer customer complaints about ‘off-taste’ in our fried snacks.” — Procurement Manager, UAE Food Manufacturer

Why This Matters for Your Business

When you choose a supplier who transparently shares lab results—and builds quality into every step—you reduce risk, improve consistency, and build long-term trust with your end customers.

You may have asked yourself: “Have you ever lost business due to oil spoilage or unexpected flavor changes?” That’s exactly why we invest in rigorous testing—not just for compliance, but for peace of mind.

Ready to Source Smarter?

Explore how our certified, cold-pressed soybean oil can become a reliable part of your global supply chain.

Download Our Full Quality Assurance Report

Because real quality doesn’t hide—it shows up in every bottle, every order, and every satisfied client.

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