1. The inventor of canned food was Appert Nicolas, a Frenchman in the early 19th century. In 18 AD, Napoléon Bonaparte offered a bounty worth 12, francs, asking for practical food preservation methods available to marching troops. After 14 to 15 years of experiments, Appel put forward his invention and won a reward in 181.
2. Appel House became the first commercial cannery in the world. Appel patented his invention and set up a company to keep all kinds of food in closed bottles. This technology was made public after it was patented in 181. This method can preserve food for a long time without decay and deterioration, which is the embryonic form of modern canned food.