Abstract: The present invention relates to a new class of peptides having antibacterial activity and presenting D-amino acids and their uses. It also relates to a new enzyme presenting a peptide epimerase activity in vitro and in vivo, thereby being useful for modifying peptides in order to change the amino acid configuration from L to D.

Abstract: The invention relates to the use of lactic bacteria of the species Lactobacillus farciminis for the treatment or prevention of a pathology of the digestive tube, especially an acute or chronic inflammatory pathology of the intestine.

Abstract: The invention relates to the use of cells of at least one strain of bacteria belonging to the Bacilli class for the production of a composition that is intended to prevent vertebral compression syndrome in fish from the salmonid family.

Abstract: An enzymatic hydrolysis of a glycosidic substrate containing at least one of the said precursors is performed with at least one enzyme chosen in accordance with the structure of the said precursor, to liberate the corresponding monoglycosides by cleavage at a glycoside bond, and, in a second stage, an enzymatic hydrolysis of the product of the first stage is performed with at least one enzyme other than or identical to that/those of the first stage and designed to liberate the aroma components and aromas by cleavage of the aglycone-carbohydrate linkage bond. A vegetable material derived from a fruit such as grape or an aromatic or flowering plant, as well as their derivatives and by-products, is chosen as a glycosidic substrate. Terepenols such as geraniol, linalol, nerol and the like, terpene polyols and alcohols such as phenyl ethyl alcohol and benzyl alcohol, or the like, are obtained, in particular, as aroma components or aromas.

Abstract: This process for combatting Varroa jacobsoni by biological means, an ectoparasitic acarian specific to the genus Apis, is characterized in that there is introduced, into the environment in which said acarian may be present, an attractant product consisting of a total hexane extract of bee larvae; or of an active fraction of such an extract; or of at least one active ester derived from a C.sub.1 -C.sub.6 aliphatic alcohol and from a C.sub.10 -C.sub.24 carboxylic acid; or of a mixture of methyl and ethyl palmitates, stearates, oleates, linoleates and linolenates, or an active mixture of at least two of these esters; or ethyl palmitate, methyl palmitate, methyl linolenate or mixtures thereof, optionally with another ester.