1. Q: Are these colored and striped cellulose casings safe? Do the pigments used meet standards?
A: Yes, the pigments used in colored/striped cellulose casings produced by reputable manufacturers are all food colorants approved by national food safety standards (such as GB 2760) and are therefore safe and reliable. The casings themselves are not digested or absorbed by the human body under normal circumstances and must be removed before consumption.
2. Q: Can cellulose casings be eaten directly?
A: No. Cellulose casings are strong and retort-resistant, but they are tough and indigestible. They primarily serve to shape, protect, and provide ventilation, so they must be removed before consumption.
3. Q: Why are some sausage casings easy to remove while others are difficult?
A: The ease of removal is affected by several factors:
Sausage cooling process: Rapid cooling after cooking allows the meat filling to separate from the casing, making it easier to remove.
Fat/moisture content of the filling: Meat fillings with high fat and moisture content are more likely to form gaps with the casing after heating, making it easier to remove.
Casing Properties: Casings made by different manufacturers and using different processes have different internal lubricity and shrinkage properties, which can also affect peelability.
4. Q: What is the difference between cellulose and natural casings?
A: The main differences are as follows:
Source: Cellulose casings are man-made (plant fibers); natural casings come from animal intestines (such as pig and sheep).
Taste: Natural casings are edible, with a crisp and tender texture and a unique aroma; cellulose casings are inedible and must be peeled.
Appearance: Natural casings vary in size and have a natural shape; cellulose casings have uniform size and a neat appearance.
Performance: Cellulose casings are stronger and more suitable for mechanized, mass-produced production.
5. Q: How should cellulose casings be treated before use?
A: Generally, they need to be soaked in warm water (approximately 30-40°C) for a period of time before use (refer to the product instructions for the specific time, usually several minutes to half an hour). Soaking restores flexibility and prevents breakage during filling and subsequent processing (such as kinking).
6. Q: How should unused cellulose casings be stored?
A: They should be stored in a cool, dry, dark place away from moisture. Once opened, they should be used as soon as possible. For long-term storage, they should be tightly sealed to prevent moisture absorption and brittleness.
