Bioeurope

Roussel Uclaf

Roussel-ulcaf

Ulice

Sucre Recherches Et Developpements

Francois B Paul

Pierre F Monsan

Jacques Biton

Jean-Marc Michel

Vincent P Pelenc

Daniel H Auriol

Gerard Gellf

Magali M Remaud

Agustin Lopez Mungica Canales

Process for the enzymatic synthesis of alkyl esters of peptides and

The present invention concerns the use of fructosyl oligosaccharides as low-calorie sweeteners, and the foods, dietetic products and drinks containing them.

Low calorie sweetener

Method for the production of .alpha.(1.fwdarw.2) oligodextrans using

Low-calorie sweeteners of fructosyl oligosaccharides and the food or

The invention relates to the preparation of water-soluble L-tyrosine derivatives having the formula ##STR1## where R.sub.1 is a L-malyl, L-lactyl, L-glutamyl or L-aspartyl group, R.sub.2 is a --OH, --OM, methoxy, ethoxy or amino group and M is an alkaline metal, by enzymatic condensation of an acid selected among L-malic, L-lactic, L-glutamic and L-aspartic acids, with a L-tyrosine derivatives selected among the ethyl and methyl esters and the amide of L-tyrosine. The enzyme is obtained from a culture of Micrococcus casealyticus. The compounds where R.sub.1 is a L-malyl or L-lactyl group are new. Said L-tyrosine derivatives are useful in cosmetic and pharmaceutical compositions, such as tanning and sun compositions.

Water-soluble L-tyrosine derivatives and a process for preparing

The invention relates to the field of biotechnology. It relates to a process for preparing a syrup, the dry extract of which includes a high content of isomaltose, which comprises treating an aqueous solution of sucrose with a mixture of the enzymes dextransucrase and dextranase at a temperature of 0.degree. to 50.degree. C. and at a pH in the range from 4.5 to 7, so as to obtain an aqueous syrup containing fructose, isomaltose, glucose and, possibly, isomaltotriose as the main constituents. The syrup obtained is a useful intermediate for the synthesis, in particular, of isomaltitol.

Process for the enzymatic preparation from sucrose of a mixture of

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Toulouse, France

Francois B Paul