ISO/DIS 6900:2024
Dried red jujubes
- Standard No.
- ISO/DIS 6900:2024
- Release Date
- 2024
- Published By
- International Organization for Standardization (ISO) IX / ISO
- Latest
- ISO/DIS 6900:2024
- Introduction
Interpretation of the core content of the standard
The ISO 6900 standard establishes for the first time a globally unified quality evaluation system for dried red dates (Ziziphus jujuba Mill.), which divides the products into two categories according to their variety: large fruit type and small fruit type, and into four grades from special grade to third grade according to their quality.
Key indicators of quality grading
Grade Sugar requirement Moisture limit Defect rate Fruit shape requirement Special grade ≥75% ≤20% ≤3% Extremely full First grade ≥70% ≤5% Full Second grade ≥65% ≤10% Relatively full Level 3 ≥60% ≤15% Not full
Key detection methods
Sulfur content detection
The ISO 5522 method is used, which requires that the residual sulfur dioxide shall not exceed 1000mg/kg, providing a quantitative control basis for the sulfur fumigation process.
Sugar content determination
Through Fehling’s reagent titration (see Appendix B of the standard):
1. Sample acid hydrolysis treatment (68-70℃/10min)
2. Fehling’s reagent calibration
3. Parallel determination deviation ≤5%
Standard implementation suggestions
- Processing stage: Control the drying temperature to avoid oily and diseased fruits (Standard 5.3.3 clause)
- Detection focus: Special grade products must be 100% free of insect infestation and mildew (Table 2 requirements)
- Packaging specifications: Nylon bags are prohibited (Clearly stipulated in Clause 10.1)
Standard evolution analysis
This standard has made a breakthrough:
1. Established the world’s first red date variety size classification table (Appendix A)
2. Introduce the sugar/water ratio as the core quality indicator
3. Incorporate traditional Chinese terms such as "oily head diseased fruit" into the international standard terminology system (Clause 3.7)
ISO/DIS 6900:2024 Referenced Document
- ISO 2859-1 Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection*， 2026-01-22 Update
- ISO 5522 Fruits, vegetables and derived products - Determination of total sulphur dioxide content
- ISO 874 Fresh fruits and vegetables; Sampling
ISO/DIS 6900:2024 history
- 2024 ISO/DIS 6900:2024 Dried red jujubes
