The present invention relates to a method for preparing a porous scaffold for tissue engineering. It is another object of the present invention to provide a porous scaffold obtainable by the method as above described, and its use for tissue engineering, cell culture and cell delivery. The method of the invention comprises the steps consisting of: a) preparing an alkaline aqueous solution comprising an amount of at least one polysaccharide, an amount of a cross-linking agent and an amount of a porogen agent b) transforming the solution into a hydrogel by placing said solution at a temperature from about 4° C. to about 80° C. for a sufficient time to allow the cross-linking of said amount of polysaccharide and c) submerging said hydrogel into an aqueous solution d) washing the porous scaffold obtained at step c).

Molded articles are disclosed herein, the molded article comprising a polysaccharide, wherein the polysaccharide comprises i) poly alpha-1,3-glucan; ii) poly alpha-1,3-1,6-glucan; iii) a graft copolymer that comprises (A) a backbone comprising dextran with a weight-average molecular weight (Mw) of at least about 100000 Daltons, and (B) poly alpha-1,3-glucan side chains comprising at least about 95% alpha-1,3-glucosidic linkages; or iv) a composition comprising a poly alpha-1,3-glucan ester compound as disclosed herein. Optionally, the molded articles can further comprise a plasticizer and/or starch. The molded articles can be useful as a container, a handle, packaging, a tray, a bottle, a cup, a sheet, a disposable food packaging item, an automotive part, a casing for an electronic device, or a toy.

The composition relates to a laundry care or dish care composition including a poly alpha-1,6-glucan derivative, wherein the poly alpha-1,6-glucan derivative includes: (i) a poly alpha-1,6-glucan backbone of glucose monomer units, wherein greater than or equal to 40% of the glucose monomer units are linked via alpha-1,6 glycosidic linkages, and optionally at least 5% of the backbone glucose monomer units have branches via alpha-1,2 and/or alpha-1,3 glycosidic linkages; and (ii) at least one organic group linked to the poly alpha-1,6-glucan backbone through a carbonate (—OCOO—) linkage moiety; wherein the poly alpha-1,6-glucan backbone has a weight average degree of polymerization of at least 5; and wherein the poly alpha-1,6-glucan derivative has a degree of substitution of carbonate linkage moiety of from 0.20 to 1.00.

A method of preserving one or more chemical and/or biological species in a polymer matrix comprising pullulan and trehalose is described. The method includes combining the one or more chemical and/or biological species, an aqueous pullulan and a trehalose solution and drying the resultant mixture to provide a solid polymeric matrix in the form of a powder and/or with a water content of less than 10 wt %. The polymeric matrix comprising the one or more chemical and/or biological species and its use, for example, in biological preparations and medicaments is also described.

Film products, especially suitable for oral delivery, which can be formed during manufacture in the form of large and/or heavy film strips or sheets and subsequently cut into uniform dosage units, each dosage unit being uniform in content and having distributed therein a linear polysaccharide, such as pullulan, a plasticizer, and an active component.

Various embodiments disclosed relate to treatment fluids comprising a compound of the formula (I): wherein G.sub.1, G.sub.2, L.sub.1, L.sub.2, L.sub.3, q, and r are defined herein. Various other embodiments relates to methods of treating subterranean formations with such treatment fluids. ##STR00001##

An electrochromic element includes a pair of electrodes and an electrochromic layer disposed between the pair of electrodes. The electrochromic layer contains an electrochromic material, a solvent, and a cyanoethylated polymer.

The present invention relate to three dimensional porous polysaccharide matrices able to induce mineralisation of a tissue in osseous site, as well as in non-osseous site, in the absence of stent cells or growth factors.

The instant disclosure provides a process for making pullulan.

The invention relates a process for preparing a cross-linked starch-based polymer comprising the following steps: 1) dissolving a starchy material in a suitable solvent to form a starchy material solution; and 2) adding a episulfide of formula (I), wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently selected from hydrogen and (C.sub.1-C.sub.3)alkyl in the starchy material solution in order to obtain the disulfide crosslinked starch-based polymer. In another aspect the invention concerns a disulfide-cross-linked starch-based polymer obtainable by the process of the invention, that is characterized by only disulfide bridges.