Dehydrated vegetable varieties that require special attention to indicators

According to the NY/T 1045-2025 standard system, pollutant enrichment mechanism, and local industry supervision practices in Linyi, Shandong, the following dehydrated vegetable varieties need to be monitored during production, testing, and certification due to their natural physiological characteristics, growth environment, and high-risk pollution pathways:

1、 Leafy vegetables: high-risk varieties for pesticide residues

Spinach

Risk causes: Large leaves, wide surface area, short growth cycle (30-45 days), insufficient residual time after pesticide spraying, and easy adsorption of organic phosphorus and pyrethroid pesticides.

Key monitoring indicators:

Omeprazole, Chlorpyrifos, Imidacloprid (GB 2763-2026 limit ≤ 0.01-0.1 mg/kg)

Residual sulfur dioxide (often overused for color protection during dehydration processing)

Industry warning: From 2020 to 2024, the excessive pesticide residue rate of dehydrated spinach ranks first among leafy vegetables in multiple sampling areas.

Chives

Risk factors: Root exudates are prone to attract underground pests, and farmers often apply pesticides frequently with strong drug resistance, which can easily lead to "pesticide accumulation".

Key monitoring indicators:

Chlorpyrifos (limit ≤ 0.02 mg/kg), Chloramphenicol, Carbendazim

Total bacterial count (due to the presence of sulfides, anaerobic bacteria are prone to grow)

Local practice: Linyi City has listed it as a key municipal governance variety and implemented "one product, one policy" sampling testing.

2、 Rhizome: High risk varieties with heavy metal enrichment

Carrots

Risk cause: The fleshy roots come into direct contact with the soil and have strong absorption and enrichment abilities for lead (Pb) and cadmium (Cd), especially in industrial areas or sewage irrigation areas.

Key monitoring indicators:

Lead (≤ 0.5 mg/kg), cadmium (≤ 0.1 mg/kg)

Total arsenic (≤ 0.5 mg/kg)

Testing trend: Enterprises in Linyi generally use ICP-MS for heavy metal screening of raw material batches, with an average rejection rate of 3.2% for over standard raw materials.

Garlic

Risk cause: The bulbs are exposed to heavy metals in the soil for a long time during the underground expansion period, and sulfur-containing compounds are prone to form stable complexes with heavy metals, which are difficult to remove by cleaning.

Key monitoring indicators:

Lead, cadmium, mercury (Hg)

Sulfur dioxide (often excessively smoked during dehydration to prevent mold growth)

Regulatory requirements: Linyi City will include garlic as a "key controlled variety" and enforce the environmental filing system for raw material production areas.

3、 Fruits and vegetables: double risk varieties of craftsmanship and pesticide residues

Chili pepper

Risk Causes:

Thick skin, difficult to degrade due to pesticide penetration;

During dehydration and drying, high temperatures can easily lead to the coexistence of capsaicin and pesticide residues, which can interfere with detection;

In order to maintain color, some companies illegally use sulfur fumigation.

Key monitoring indicators:

Cypermethrin, Chlorpyrifos, Omeprazole

Residual sulfur dioxide (≤ 0.1 g/kg, strict control of sulfur fumigation behavior)

Local practice: Linyi pepper dehydration enterprises are generally equipped with AI visual sorting systems to remove batches with abnormal color and excessive sulfur fumigation marks.

4、 Regional industrial focus: Linyi main production variety supervision list

|Variety | Risk Type | Regulatory Intensity | Local Enforcement Measures|

|Chili pepper | pesticide residue+sulfur dioxide | ★★★★★ | Each batch must be tested for pesticide residue+SO ₂, blockchain traceability|

|Garlic | Heavy Metals+Sulfur Dioxide | ★★★★★ | Raw Material Soil Heavy Metal Filing, Enterprise Self Inspection+Third Party Review|

|Carrots | Heavy Metals | ★★★☆ | ICP-MS Full Inspection, Export Products Added EU Limit Values|

|Spinach | Pesticide residue | ★★★☆ | Dehydration should be completed within 72 hours after harvesting to shorten the retention period of pesticide residue|

|Chives | Pesticide residues+microorganisms | ★★★★☆ | Prohibition of the use of highly toxic pesticides, mandatory refrigerated transportation|

Note: The above varieties must comply with the dual standards of NY/T 1045-2025 and GB 2763-2026. Exported products must also meet stricter limits in markets such as the European Union, Japan, and South Korea (such as the EU's cadmium limit of 0.05 mg/kg).