Inspection of hand-pulled pancakes

1. Testing items
Ingredients testing: On the one hand, the flour quality is tested to see if it contains excessive impurities, mycotoxins and other harmful substances. High-quality flour is the basis for ensuring the chewy texture of hand-pulled pancakes; on the other hand, attention is paid to the oil composition to determine the content of trans fatty acids. Excessive trans fatty acids are harmful to health and must be controlled within the safety standard. In addition, for ingredients such as chopped green onions and diced ham, their freshness and pesticide residues and veterinary drug residues must be tested to ensure the safety of the source of the ingredients.

Microbial index testing: Focus on testing pathogenic bacteria such as Escherichia coli, Staphylococcus aureus, and Salmonella. If the sanitary conditions during the production of hand-pulled pancakes are not good, these bacteria are very likely to breed, and after eating, they will cause foodborne diseases such as vomiting and diarrhea, which is extremely harmful.

Physical and chemical index testing: including moisture content and peroxide value. Excessive moisture will make the hand-pulled pancakes soft and moldy and deteriorate faster; the peroxide value reflects the degree of oil oxidation. A high value indicates that the oil is rancid, the flavor of the pancake is deteriorated, and the shelf life is shortened.

2. Testing methods
Laboratory instrument analysis method: Use high-performance liquid chromatography, gas chromatograph and other precision instruments to accurately determine the content of various components in flour and oil, accurately identify potential harmful substances, and provide data support for quality judgment.

Microbial culture method: Dilute the hand-grabbed pancake sample, inoculate it on a specific culture medium, culture it at a suitable temperature and humidity for a certain period of time, observe the morphology and quantity of the colonies, and judge whether the microorganisms exceed the standard, which intuitively and accurately reflects the sanitary conditions.

Rapid test paper method: For indicators such as peroxide value and some pesticide residues, special test papers can be used to quickly screen through color changes. The operation is convenient and low-cost, and preliminary judgment can be completed in a short time, which is convenient for timely troubleshooting of problematic products.

3. Testing standards
National standards limit the use of ingredients, physical and chemical and microbiological indicators of hand-grabbed pancakes to a strict range, ensuring the basic quality of hand-grabbed pancakes in the national market; industry standards refine processing technology and ingredient ratio requirements based on different brands and special flavors, highlighting the differentiated advantages of products; local standards combine regional dietary characteristics, such as some regions prefer special spices, and supplement the use of spices to ensure local flavors while maintaining safety bottom line.

4. Significance of Testing
For production enterprises, strict testing is the cornerstone of establishing brand reputation, prompting enterprises to optimize production processes, control raw material procurement, and win market favor with high-quality products; for consumers, they can safely purchase hand-pulled pancakes that meet standards, enjoy delicious food without worrying about health risks, making fast food consumption more secure and comfortable, and promoting the healthy and vigorous development of the entire hand-pulled pancake industry.