Abstract: An anti-infective composition comprising glycogen or phytoglycogen nanoparticles is provided.

Abstract: Monodisperse glycogen or phytoglycogen nanoparticles are polyfunctional additives suitable for use in aqueous or alcohol-based cosmetic, pharmaceutical, or food formulations. The nanoparticles may be isolated from various sources (such as corn), and are optionally modified with a range of organic moieties (such as octenyl succinic acid). The monodisperse and particulate nature of the glycogen/phytoglycogen is believed to render such materials useful as rheological modifiers (including modulation of thixotropic behavior), stabilizers of organic and biological materials, and photostabilizers in sunscreens.

Abstract: Polysaccharide nanoparticles that are particularly useful in for example drug and agent delivery, tissue-specific targeting, for medical imaging and diagnosis, as well as modifiers of physico-chemical properties. The nanoparticles can be highly-branched glucose homopolymers and can be characterized by a uniform spherical shape. They are monodisperse, hydrophilic and produce low solution viscosities. The nanoparticles are non-toxic, biocompatible and biodegradable. Also, the process of isolation of said polysaccharide nanoparticles from various organisms including, but not limited to, microorganisms such as bacteria and yeasts. Also provided are methods for chemical conjugation of the polysaccharide nanoparticles with various agents. Also provided are examples of use of the polysaccharide nanoparticles and their derivatives as drug delivery systems and fluorescent diagnostics.

Abstract: An industrially scalable process for producing substantially monodisperse compositions of phytoglycogen nanoparticles from phytoglycogen-containing plant materials is provided that avoids the use of chemical, enzymatic or thermo treatments that degrade the phytoglycogen material. Also provided are phytoglycogen nanoparticle compositions produced by these processes.

Abstract: A composition of phytoglycogen nanoparticles purified from a phytoglycogen-containing plant material is provided. The composition of phytoglycogen nanoparticles is monodisperse. A method of isolating the composition from phytoglycogen-containing plant materials is provided that includes steps of microfiltration and ultrafiltration, but avoids the use of chemical, enzymatic or thermo treatments that degrade the phytoglycogen material.

Abstract: A composition of phytoglycogen nanoparticles purified from a phytoglycogen-containing plant material is provided. The composition of phytoglycogen nanoparticles is monodisperse. A method of isolating the composition from phytoglycogen-containing plant materials is provided that includes steps of microfiltration and ultrafiltration, but avoids the use of chemical, enzymatic or thermo treatments that degrade the phytoglycogen material.

Abstract: Monodisperse glycogen or phytoglycogen nanoparticles are polyfunctional additives suitable for use in aqueous or alcohol-based cosmetic, pharmaceutical, or food formulations. The nanoparticles may be isolated from various sources (such as corn), and are optionally modified with a range of organic moieties (such as octenyl succinic acid). The monodisperse and particulate nature of the glycogen/phytoglycogen is believed to render such materials useful as rheological modifiers (including modulation of thixotropic behaviour), stabilizers of organic and biological materials, and photostabilizers in sunscreens.