The history of food conservation

1980s 1970s 1960s The history of food conseruation MEMBRANE FILTERS UHT VACUUM PACKACING The food industry starts to use this particle separation technique to improve food stabilitų and security. The ultra- hight tempera- ture technique is still used to sterilise milk. This technique, that removes all air from the packaging. was applied to cooking by Georges Pralus in the 1960s. Storage and conservation of food has always been a major challenge to feed mankind in times of shortage. And man has always proven very ingenious to come up with efficient, surprising and innovative ways to do that. Here is a brief review, and a sneak peek at the food conservation of the future. TOBE CONTINUED. Conservation by heat PULSED LIGHT PULSED Technical conservation Under development FREEZING ELECTRIC FIELDS Conservation by irradiation *** Conservation by cold Under development In 1923, Clarence Birdeye comes up with Food is exposed to intense flashes of ultra-violet, infra-red and vi- sible light, which turn into energy with an annti-microbial effect. Chemical conservation 1920s an invention to freeze first fish, then meat and Food is exposed to intense and very brief electric impulsions. vegetables. The first domestic freezers will appear in the years 1960. START PULSED MAGNETIC FIELDS DRYING REFRICERATING Mognetic pulses provoke collisions between water 400 000 B.C 1910s particles, that make the temperature rise immediately. The first domestic electric Used by prehistoric men when they realised that the fires burning in their caves smoke-dried the meat, and refriogirator is invented in 1913. Under development that dried fruit did not rot. 8 o00 B.C 1* century 1* century 1790 1900s ICE & SNOW IONIZING RADIATION FERMENTATION CURING APPERTISATION Used in Rome too, along with brine, to preserve meat and vegetables. Exposing food to electroma- gnetic radiation improves their conservation qualities. The first patents were issued in 1905. The Romans wrapped Used by the Sumerians for bread, beer and wine. Nicolas Appert invents sterilisation and the first Fish in them for trans- portation. hermetic cans.