sodium sulfite
Basic Information
| Field | Content |
|---|---|
| Chinese name | sodium sulfite |
| English name | sodium sulfite |
| INS/E number | INS 221 |
| Functional class | Preservative, Antioxidant |
| Year adopted | 1965 |
| Approved by | Australia/New Zealand (FSANZ), European Union (EFSA) |
What is it?
Sodium sulfite is the sodium salt of sulfur dioxide; in solution it releases sulfite and acts as a preservative, antioxidant and bleaching agent.
Source
Industrial：二氧化硫气体与氢氧化钠溶液中和反应制得
Why is it used?
- Inhibits microbial growth
- Prevents oxidative discolouration and browning
- Serves as a bleaching agent in processing
- Maintains quality of seafood and fruit/vegetable products
Common Foods
- Dried fruits
- Wine
- Candied fruits
- Pickled vegetables
- Seafood (shrimp)
- Vermicelli
Safety
ADI (Acceptable Daily Intake)：0-0.7 mg/kg bw (以 SO₂ 计)
Concerns：
- 哮喘及敏感者可能过敏
- 破坏硫胺素（维生素B1）
Usage Standard
China：GB 2760《食品安全国家标准 食品添加剂使用标准》
International：
- EU Regulation 1333/2008 Annex II/III (E 221)
- FDA 21 CFR 182.3766 (Sodium sulfite, GRAS)
- Codex GSFA (INS 221)
- Australia New Zealand Food Standards Code (Sodium sulfite)
In a nutshell
Sodium sulfite is a common sulfite preservative that inhibits microbes and oxidation, with caveats for sensitive people.
Consumer Advice
Sodium sulfite is a sulphite preservative and antioxidant used in dried fruit, candied fruit, pickles and wine to prevent browning and spoilage. It works by releasing sulfur dioxide in food. It is safe for most people, but sulphites are an allergen that must be labelled and can affect people with asthma and other sensitive individuals. Residual limits are strictly controlled worldwide. Sensitive people should avoid foods labelled as containing sulphites.
Dietary Restrictions
- Vegan: ✅
- Halal: ✅
- Kosher: ✅
Allergens
⚠️ Contains allergens
Disclaimer
The information provided here is for discussion and educational purposes only. It is not medical advice or an evaluation/rating of any product or ingredient. This information may not apply to you; before using or taking any action, you should contact the manufacturer, vendor, medical, dietary, fitness, or other professionals. If you use any information provided here, you do so at your own risk.