Detailed Explanation of Grading and Packaging Standards for Button Mushrooms (Agaricus bitorquis)

Quality Standards

Basic quality requirements: fresh and clean, free of abnormal odor or taste, free of abnormal foreign moisture, carefully picked, fully developed, with maturity suitable for market or storage requirements.

Special grade: same variety, excellent shape and color, cap not opened, with the inherent color of the variety, no water damage, no rot. Grade I: same variety, normal shape and color, cap not opened, with the inherent color of the variety, no water damage, no rot, no pests or diseases or other damage.

Grade II: same variety, inferior to Grade I, but still retaining the basic characteristics of the fruit of this variety and still having commercial value.

Grades and Size Specifications

Item Size Specification

Size grade Large (L) Medium (M) Small (S)

Cap diameter 4 cm or more 2.5-4 cm 2.5 cm or less

Transport Packaging Specifications

Container material Capacity (kg) Container specifications (cm, outer dimensions)

Length Width Height

Corrugated cardboard box 6 40 30 24

Note: Packaging containers must be clean and dry, sturdy and attractive, non-toxic and odorless, with no sharp objects inside and no protruding nails or sharp points outside. Cardboard boxes must be free of moisture damage and delamination. Cardboard boxes used for fresh fruit packaging are required to withstand a negative pressure of 200 kg or more with no obvious deformation within 24 hours. (*The box body should have 4-6 vent holes, 16 mm in diameter.)