Hygiene standard Whether fast-food tableware meets the […]
Whether fast-food tableware meets the hygiene requirements is closely related to the health of consumers. Generally, it is required to use fermentation method (10cme2) of coliform bacteria <3, and the number of mold-based molds should not exceed 50 per gram to eliminate conventional infectious diseases. propagation.
Physical and chemical indicators
For fast food tableware, different physical and chemical indicators should be tested according to the materials. The general requirements are as follows:
Evaporation residue (mg/1)
Water: 60 ° C, 2 h, ≤ 30
4% acetic acid: 60 ° C, 2 h, ≤ 30
65% ethanol: 20 ° C, 2 h, ≤ 30
Normal ethane: 20 ° C, 2 h, ≤ 30
Potassium permanganate consumption: distilled water, 60 ° C, 2 h, ≤ 10 ppm
Heavy metal (in ph) (mg/1): 4% acetic acid, 60 ° C, 2 h, ≤ 1
Decolorization requirements: cold meal oil or colorless oil, negative; ethanol, negative; soaking solution, negative.
For paperboard, pulp, edible starch and vegetable fiber tableware, other indicators such as Aspergillus flavus, pesticide residues and fluorescent substances should be tested to ensure the safety of the human body.
Degradation performance indicators According to the requirements of the national "General Technical Conditions for Disposable Biodegradable Tableware", the biodegradability of paper tableware should reach Grade III or above according to the mold erosion test. The biodegradability of plant fiber tableware and edible starch tableware should be According to the mold erosion test, it can reach grade IV or above. If it cannot be reached, further aerobic composting test is needed to confirm its biodegradability. The biodegradation rate of paper tableware should reach more than 30%, and the biodegradation rate of plant fiber tableware and starch tableware should reach more than 60%; the total radiation amount of light/biodegradable non-foamed plastics should be exposed in the field. (310±10) MJ/Me2, the weight average molecular weight drop rate should be above 80%, or the xenon lamp source exposure test 16800kj/Me2, the weight average molecular weight decreased by more than 70%, while testing the low molecular weight (below 10,000) ratio and Carbonyl index.