In honey there are different natural antibacterial substances, or so called inhibines. One of them, hydrogen peroxide, was thought to be the most important one. However, our studies show, that there are different non-peroxide antibacterial substances. Contrary to the peroxide inhibines, they are not sensitive towards heat , light and storage. The antibacterial effect of honey is optimal, when it is stored in a cool, dark place and when it is consumed in fresh condition. The non-peroxide inhibines originate partly in the honey plants. However, the main part of the antibacterial agents is added by the bees. Four honey fractions were tested for antibacterial activity: acids, bases, lipophylic, non-volatile and volatile. The main antibacterial fraction was the acidic one, with 45 % of the total activity. Future research should elucidate the chemical nature of these antibacterial substances.
Plants and microorganisms can perceive and respond to sound waves. In a review of the literature, Agroscope analysed various publications on this topic. The studies show that sound can lead to positive effects on physiology in the form of improved growth, development and disease resistance.
The war in Ukraine, dry spells and droughts followed by heavy rainfall and flooding are major challenges for our food systems. But the problems that they bring to light are nothing new – and solutions are already to hand.
Biogenic amines in foods represent a health risk. Researchers from Agroscope and INRAE investigated the formation of these undesirable substances in raclette cheeses by the bacterium Morganella morganii.