Ethers of polyglycerols and an improved method of preparing said ethers are disclosed. The ethers are prepared by reacting a purified polyglycerol with an alpha olefin epoxide in the presence of an alkali metal alkoxide catalyst.

Glycerol, 2,2-dimethyl-1,3-dioxolane-4-methanol (Solketal), glycidol or glycerol carbonate is polymerized into preponderantly linear oligomers at 150.degree. C. to 350.degree. C. in the presence of anionic clay material, preferably hydrotalcite, as a catalyst.

New polyglycerol fatty acid compositions wherein the polyglycerol moiety predominantly consists of di-, tri- or tetraglycerol, the fatty acid residues have a chain length of 16-18 carbon atoms and are substantially fully saturated and the degree of esterification ranges from 80 to 100%. Said compositions are particularly useful for producing margarines and low-fat spreads having improved butter-like properties and a reduced tendency to develop graininess.

Disclosed are novel polyglycerine polyricinoleates as emulsifiers obtained by the esterification of polyricinoleic acid with a natural condensation rate of from 2 to 10 with a polyglycerine mixture comprising 5-35 wt. % glycerine, 15-40 wt. % diglycerines, 10-30 wt. % triglycerines, 8-20 wt. % tetraglycerines, and 3-10 wt. % pentaglycerines, and the remainder being oligoglycerines. The materials have improved emulsifying capacity.

A process for the preparation of a composition containing diglycerol, in which process at least a stoichiometric amount of isopropylideneglycerol is reacted with .alpha.-monochlorohydrin in the presence of at least one alkaline compound at sufficient temperatures to yield an intermediate product composition containing monoisopropylidenediglycerol and a salt. Most of the salt and water formed is removed from the intermediate product composition, and any unreacted isopropylideneglycerol is removed...

Linear polymers of glycerol can prevent or delay ice nucleation in a variety of contexts. Polyglycerol can also be employed in combination with other ice control agents, such as polyvinyl alcohol/polyvinyl acetate copolymers and antifreeze proteins, to provide antinucleation effects that are superior to those of either polyglycerol or the co-antinucleator alone. Polyglycerol has a number of advantageous physical and toxicological properties, such as extreme water solubility, non-toxicity to huma...

A method for rapid and uninterrupted single stage manufacture of polyglycerol esters comprising reacting a monoester of glycerine in the presence of an acidic catalyst and heat. The method can be practiced in current reaction vessels of the vertical cylinder type. There is no need to draw off polyglycerol during the course of the reaction.

A method for the rapid and uninterrupted single stage manufacture of polyglycerol esters comprising reacting a monoester of glycerine in the presence of an acidic catalyst and heat. The method can be practised in current reaction vessels of the vertical cylinder type. There is no need to draw off polyglycerol during the course of the reaction.

The invention relates to the use of polyglycerols in the manufacture of foods, in particular for influencing texture formation, water absorption capacity, freshness, inhibition of crystallization, protein denaturation and the improvement of the freeze and thaw stability and for fat replacement.

An improved polyglycerol ester emulsifier is prepared by heating a polyglycerol ester having 3 to 10 glycerol units and 1 to 2 saturated fatty acyl ester groups each having 16-20 carbon atoms, glycerol and water at a temperature of from 125.degree.F. to 135.degree.F. until a homogeneous paste-like consistency is imparted thereto.