Antimicrobial peptides as natural bio-preservative to enhance the shelf-life of food.

Antimicrobial peptides (AMPs) are diverse group of natural proteins present in animals, plants, insects and bacteria. These peptides are responsible for defense of host from pathogenic organisms. Chemical, enzymatic and recombinant techniques are used for the synthesis of antimicrobial peptides.

Determination of the chromium content of Hungarian winter wheat.

Bread and different winter wheat (Triticum aestivum) products are the main sources of chromium in the human diet in Hungary. Graphite furnace atomic absorption spectrometry (GF-AAS) is able to give reliable results for Cr. In this study the chromium content of some winter wheat species was determined after wet digestion.

Changes in the heavy metal contents of soil from the Park Grass Experiment at Rothamsted Experimental Station.

The classical Rothamsted Experiments allow to contribute to current research. The heavy metal content of soil and hay samples have been measured with ICP-AES from a control and a fertilized plot of the Park Grass Experiment. Today a difference of 1.

Induction of in vitro tuberization by short day period and dark treatment of potato shoots grown on hormone-free medium.

Effects of an environmental factor, the photoperiod, on tuberization were analyzed in vitro on 7 different potato cultivars from various maturity groups and genetic origin. No growth regulators were added to the culture medium, to preserve natural endogenous equilibrium of hormones. After culturing of shoots for 4 weeks under long days, tuberization was induced with pouring of 8% sucrose solution onto the cultures and five different photoperiodic treatments consisting of different combinations of short days and total darkness.