GB/T 6192-2019Wood ear (English PDF)

3.1 Belongs to Basidiomycota, Agaricomycetes, Auriculariales, Auriculari-

Aceae, a large edible fungus belonging to the genus Auricularia.

3.2

Black fungus with visible mold infestation or rotting.

3.3

Black fungus with insects or traces of insect pests.

3.4 Dry and wet ratio

The ratio of the mass of the dry black fungus to the soaked black fungus after soaking and absorbing water and shaking off the remaining water.

3.5 Impurities

All organic and inorganic substances except black fungus.

4.1 Sensory requirements

Should meet the requirements of Table 1.

4.2 Allowable error range

Permissible error range of grade.

a) Level 1 allows 2% of products that do not meet the requirements of this level, but should meet the requirements of Level 2;

b) Level 2 allows 2% of products that do not meet the requirements of this level, but should meet the requirements of Level 3;

c) The maximum diameter of the third class allows 2% of products that do not meet the requirements of this class.

4.3 Physical and chemical requirements

Should meet the requirements of Table 2.

4.4 Hygiene requirements

The limit of pollutants should meet the requirements of GB 2762; the limit of pesticide residues should meet the requirements of GB 2763.

4.5 Net content

The net content of the pre-packaged product shall comply with the provisions of the "Measures for the Supervision and Administration of Metrology of Quantitative Packaged Commodities".

5.1 Sampling of packaged products

In the whole batch of goods, the packaged products are based on the small packaging bags (boxes, boxes, etc.) of the same kind of goods, and random samples are taken according to the following whole batch of goods.

---The whole batch of goods <=100 pieces, take 2 pieces;

---The whole batch of goods from 101 to 500 pieces, take 3 pieces;

---The whole batch of goods 501~1000 pieces, take 4 pieces;

---The whole batch of goods > 1000 pieces, each additional 100 pieces (if less than 100 pieces are counted as 100 pieces), one additional piece will be added.

When the quality of small packages is insufficient for inspection, the sampling amount should be increased appropriately.

5.2 Sampling of Bulk Products

Bulk products take the mass (kg) of similar goods as the base, randomly sampling from different locations, sampling 3~5 copies, each 0.5kg~1kg.

5.3 Sampling of laboratory samples

Spread the sample evenly into a square, and use the diagonal positioning method to sample. At least 0.5kg is randomly sampled each time and divided into 2 parts, 1 as the inspection sample and 1 as the storage sample.

6.1 Sensory indicators

6.1.1 Shape, color, moldy ears, moth-eaten ears, smell

Observe the shape, color, moldy and rotten ears, and moth-eaten ears by naked eyes, and judge the smell by nose.

6.1.2 Maximum diameter

Randomly take no less than 10 black fungus, measure the maximum diameter of each black fungus with a vernier caliper, and calculate the average value.

6.1.3 Thickness of lugs

Randomly take no less than 10 pieces of black fungus, measure the thickness of each black fungus with a vernier caliper with a reading value of 0.05mm, and calculate the average value.

6.1.4 Impurities

Determined in accordance with the method specified in GB/T 12533.

6.2 Physical and chemical indicators

6.2.1 Dry-to-wet ratio

Weigh 10.0g of the sample (accurate to ±0.1g), put it in the room at 18°C~25°C, soak it in water for 6h~8h, and take it out with a small drying bucket

Rotate speed 80r/min~100r/min 30s after weighing, calculate dry-to-wet ratio according to formula (1), and calculate the result to one decimal place

6.2.2 Moisture

Determined according to the method specified in GB 5009.3.

6.2.3 Ash

Determined according to the method specified in GB 5009.4.

6.2.4 Total Sugar

Determined according to the method specified in GB/T 15672.

6.2.5 Crude protein

Determined according to the method specified in GB 5009.5.

6.2.6 Crude fat

Determined according to the method specified in GB 5009.6.

6.2.7 Crude fiber

Determined according to the method specified in GB/T 5009.10.

6.3 Net content

Determined according to the method specified in JJF1070.

7.1 Batching rules

The same place of origin, the same batch as an inspection batch.

7.2 Inspection classification

7.2.1 Delivery inspection

Before delivery of each batch of products, the producer shall conduct delivery inspection. The delivery inspection includes sensory indicators, signs and packaging. After passing the inspection, the delivery can only be carried out with the certificate.

7.2.2 Type inspection

Type inspection should include all items specified in Chapter 4.Type inspection should be carried out in one of the following situations.

a) The national market regulatory agency or industry competent authority put forward the type inspection requirements;

b) The results of the two sampling inspections are quite different;

c) The production technology and production environment have undergone major changes due to man-made or natural factors.

7.3 Judgment rules

7.3.1

The shape, color, maximum diameter, ear thickness, and sensory index of impurities determine the grade of the batch of products to be inspected.

7.3.2

If any of the odor, mildew and rotten ears, and dry-wet ratio index does not meet the requirements, the batch of products shall be determined as unqualified. If other indicators are unqualified,

Double sampling is allowed in the same batch of products, and re-inspection of unqualified items is allowed. If there is still one unqualified item, the batch of products shall be judged as unqualified.

7.3.3

When the mark, packaging, and net content of the batch of samples are unqualified, the manufacturer is allowed to apply for re-inspection after rectification; the re-inspection is still in accordance with the original requirements,

Take the re-inspection result as the final judgment basis.

8.1 Signs and labels

8.1.1

The pictorial mark of the transport package shall comply with the rules of GB/T 191.

8.1.2

The label of the product sales package should comply with the rules of GB 7718.

8.2 Packaging

8.2.1

The inner packaging material should be strong, clean, dry, free from damage, odor, non-toxic, and harmless. The polyethylene packaging bag (box) should meet the requirements of GB 4806.7.

8.2.2

Corrugated boxes or foam turnover boxes should be used for outer packaging. Corrugated boxes should comply with the rules of GB/T 6543, and foam turnover boxes should have moisture-proof and pressure-resistant functions.

8.3 Transportation

8.3.1

The transportation should be lightly loaded, lightly unloaded, and protected from heavy pressure to avoid mechanical damage.

8.3.2

The means of transportation shall be clean, hygienic, free of pollutants and debris.

8.3.3

Protect from the sun and rain, and cannot be transported naked.

8.3.4

It should not be mixed and transported with toxic, harmful, or odorous items.

8.4 Storage

8.4.1

Store in a well-ventilated, cool, dry, clean, hygienic, moisture-proof equipment and anti-mildew, moth and rodent-proof warehouse.

8.4.2

It should not be mixed and stored with toxic, harmful, odorous and easily spreading mold and insect pests.