Chemistry & NutrientsFortgeschritten7 min 4 sourcesUpdated: 2026-03-27
popular

THC to CBN: degradation and oxidation

Why potency profiles shift under light, heat and time, and how to classify these changes correctly.

Drivers

Time, heat, light, oxygen

Practical benefit

Better storage strategy

Warning sign

Old COA without storage context

Key points

  • Cannabinoid profiles are sensitive to storage and processing and can shift noticeably over time.
  • Light, oxygen and heat are the central drivers of degradation and oxidation processes.
  • Profile shifts must be considered alongside measurement methodology and sample handling.
1

How degradation processes arise

Chemical profiles keep changing after harvest. A value measured on the release date is therefore not necessarily identical to the state months later.

Combinations of oxygen exposure, warmth and long storage times are especially critical.

2

What this means for quality and communication

Product profiles must be assessed together with production and storage data. Otherwise normal aging processes are quickly misread.

For platforms and labs, clear indications of sample date, storage regime and measurement method are essential.

Checklist

  • Document sample date and packaging status
  • Define light and oxygen protection
  • Do not compare old and new batches without context

Frequently asked questions

Does CBN only ever increase with age?
Age plays a role, but light, heat, oxygen, and the type of storage also influence the process.
Are old products automatically bad?
Not automatically, but the profile can deviate significantly from the original release. That's why storage context is decisive.

Sources

→ Full register
  1. 1

    Gas and Liquid Chromatography Methods for Cannabinoid Analysis

    Journal of Chromatography A · 2024

    Open ↗
  2. 2

    Terpene Profiling and Quantification in Cannabis

    Analytical Chemistry · 2023

    Open ↗
  3. 3

    AOAC Official Methods of Analysis: Cannabis Testing Protocols

    AOAC International · 2024

    Open ↗
  4. 4

    ISO/IEC 17025: General Requirements for Testing Laboratories

    ISO · 2017

    Open ↗

Related articles

Quality & Lab Values

Storage, packaging, and light protection

How packaging systems co-determine real product quality and why storage is a core part of quality assurance.

Quality & Lab Values

Water activity and curing

Why aw values are crucial for stability, aroma retention, and microbiological safety.

Quality & Lab Values

Reading a COA correctly

This is how you interpret lab reports on potency, terpenes, and contaminants without falling into marketing traps.

Editorial note: The content is for knowledge and education. Regional law, medical questions and regulatory requirements must always be checked separately by qualified professionals.