Pasteurization

The presence of bacteria in some foods is undesirable since it speeds up decomposition and could be dangerous for human health. The oldest method developed to control the concentration of bacteria in food was invented by Louis Pasteur in the late 19th century, and this is why it is known as pasteurisation. It is a process that reduces the amount of bacteria without altering the nutritional and sensory features of the food. This process consists in heating the product for a few minutes at 55C° to 70C°. In this way, a large part of the bacteria die, thus making the food more hygienic. Today, milk, sauces, creams, preserves and beer are commonly pasteurised before being sold.

Special reports

  • 3 November 2014

    Conan the bacterium

    Have you ever leafed through the pages of a book of Guinness World Records? You can find records of all…

    5 February 2010

    Extreme bacteria

    Researchers from the Cnr with Bruno D’Argento and...

    4 March 2010

    Biotechnological cleaners

    In today’s society, more than 80% of human activities are...

  • 4 April 2013

    Carbon (14C) dating method

    The radiocarbon dating method...

    27 September 2012

    Over 7 billion people on Earth

    Demographers have estimated that on 31 October 2011 world population...

    18 December 2020

    The Christmas Star Tradition

    Let's discover together stories and legends about the Christmas Star...

  • 24 November 2020

    The glow of duck-billed platypuses

    It's easy to answer "which is the strangest animal?". The answer: the platypus. These strange creatures live only in Australia…

    12 October 2020

    Crispr-Cas9, the gene factory

    Nobel 2020. The biochemists Emmanuelle Charpentier, French, and Jennifer A. Doudna, from the United States, were awarded the most important…

    10 May 2020

    A virus’s life

    What are viruses Virus is a Latin word meaning poison. Viruses do not eat, breathe, move or reproduce on their…

  • 3 November 2014

    Conan the bacterium

    Have you ever leafed through the pages of a book of Guinness World Records? You can find records of all…

  • 5 February 2010

    Extreme bacteria

    Researchers from the Cnr with Bruno D’Argento and...

  • 4 March 2010

    Biotechnological cleaners

    In today’s society, more than 80% of human activities are...

From the Multimedia section

Facts

  • Bacteria as miners

    The ability of chemoautotrophic bacteria to take energy from...

    Bacteria as detergents

    Enzymes are proteins produced by the cells of all living organisms...

    Down-pouring bacteria

    It sounds incredible, but recent researches have found that bacteria can cause some atmospheric phenomena...

  • High-fashion bacteria

    Some bacteria, the Clostridia, were used to make textile fibres...

    Bacteria as Sherlock Holmes

    A drop of blood, a fragment of skin or a hair found on the scene of a crime can supply…

    Decomposing organisms

    The ability to destroy organic matter has been used by man...

  • Who lives well with low oxygen?

    <i><span style="font-style: normal; " class="Apple-style-span"><i><em>Aquandriella fermentas</em> </i>lives in stagnant waters and can stand complete anaerobiosis...</span></i>

    A super-milk

    Some protozoa have attracted the interest of the biotechnological research world...

    Let’s eat!

    The economic importance of fungi is increased by the “edible” mushrooms...

  • Bacteria as miners

    The ability of chemoautotrophic bacteria to take energy from...

  • Bacteria as detergents

    Enzymes are proteins produced by the cells of all living organisms...

  • Down-pouring bacteria

    It sounds incredible, but recent researches have found that bacteria can cause some atmospheric phenomena...