However, a national supervision and spot check issued by the General Administration of Quality Supervision, Inspection and Quarantine at the end of June 2004 165438+ 10 showed that nearly 30% of canned fruits were unqualified (not involving export products). The World Health Organization classifies canned food (including fish and fruit) as "junk food". What makes canned food that many people like "junk food"?
1. destroys amino acids and denatures protein.
Canned meat was sterilized by 12 1℃ high temperature and high pressure heating. When meat food is heated at high temperature, especially at 12 1℃ for a long time, the essential amino acids contained in meat will be seriously destroyed. In addition, protein in canned products is often denatured, which greatly reduces its digestibility and nutritional value.
2. Destroy vitamins.
Whether it is canned fruit or canned meat, the nutrients in it have been destroyed a lot.
Research data show that the vitamins in meat include vitamin B 1 (thiamine), vitamin B2 (riboflavin), calcium pantothenate (nicotinic acid), vitamin B6, folic acid and so on. , will suffer certain losses. Especially vitamin B 1 is easily destroyed when heated in neutral and alkaline solutions, and will lose 15%~25%, vitamin B2 10% and vitamin B5% ~ 30%.
For canned fruits, vitamin C is almost completely destroyed.
3. High glucose will aggravate the pancreatic load.
In order to improve the taste, a lot of sugar is added to many canned fruits. After ingesting these sugars, the blood sugar will increase significantly in a short time, which will increase the pancreatic load. At the same time, due to high energy, it will lead to obesity.
In addition, the study also found that sugar can change the molecular structure of protein, thus affecting the immune system function.