摘要:
The present invention relates to dermal patches comprising natural polysaccharides without the need for any pressure sensitive synthetic polymers. Particularly, the present invention relates to patches comprising a bioadhesive composition comprising a polysaccharide exudate and an essential oil useful for transdermal delivery of therapeutic or cosmetic agents.
摘要:
The present invention relates to a method for treating biological organic tissue, particularly plant tissue, by applying a direct current preferably of low voltage electrical field for short duration, with minimal detrimental influence on the treated tissue and to further beneficial uses of the residual tissue mass. The system and methods are useful for extraction and separation of substances of interest from the biological tissue, with optional concomitant reduction in enzyme activity, resulting in delayed or arrested browning of the tissue, and for production of imprint marks on the treated tissue. The present invention further relates to substances including pigments, minerals, oils, fragrances, vitamins, amino acids, alkaloids, extracted using the direct current treatment system, and to apparatus for performing the treatment.
摘要:
A temperature-stable droplet is provided containing a temperature-stable hydrocolloid membrane. The hydrocolloid membrane encapsulates a liquid that contains at least one enzyme, a cell, a biological agent, a pharmaceutical agent, an immunological agent, or mixtures thereof, and at least one of a locust bean gum, a natural thickening agent, a guar, polyvinylpyrrolidone, Konjac mannan, methylcellulose, hydroxymethylcellulose, calcium gluconate, glucomannan, or mixtures thereof. Preferably, the hydrocolloid membrane comprises at least one of methoxy pectin, Konjac mannan, sodium alginate, or mixtures thereof, and at least one of a locust bean gum, methylcellulose, hydroxymethylcellulose, glucomannan, or mixtures thereof. The hydrocolloid membrane encapsulating the liquid is a thickness capable of holding the liquid without bursting through a temperature range of about −20° C. to about 90° C.
摘要:
The present invention provides novel polysaccharide-based adhesive hydrogel compositions useful for wound healing and topical and transdermal delivery of therapeutic and cosmetic agents, methods of preparation and uses thereof. The hydrogel includes modified polysaccharides which bestow superior cohesion and adhesiveness to the hydrogel. The present invention further provides methods and a device useful for the testing the adhesive properties of hydrogels.
摘要:
The present invention provides cellular solid carriers comprising viable microorganisms capable of controlling plant pathogens. The cellular solid carriers are formed from water-soluble hydrocolloid beads dried under conditions which preserve their porosity, thereby allowing efficient release of microorganisms or diffusion of products derived from the microorganisms from the beads to the surrounding environment.
摘要:
A protective coating for food or agricultural products made of 5-85% driedydrocolloid gel, together with 0.2-50% of at least one natural compound isolated from the surface of the product, or at least one compound substantially similar thereto, for example, sitosterol, stigmasterol or milk.
摘要:
The present invention provides coated single cells or embryos having a protective micro-coating of hydrocolloid. The present invention further provides methods of coating single cells or embryos with a hydrocolloid such as an alginate, low-methoxy pectin (LMP), and carrageenans to provide a micro-coating. The coating serves as a barrier to pathogenic contamination and hazardous materials and protects against damage during freezing and thawing, thus improving survival prospects.
摘要:
A system for nitrate removal from aquariums, both fresh water and marine aquariums, by means of permeable polymeric beads which contain a combination of fermentative and denitrifying bacteria and a carbon source. Preferred beads are beads made from sodium alginate or chitosan. The bacteria, in the presence of the carbon source, are able to reduce nitrate to nitrogen gas. Bacteria which are not harmful to fish are used. The porous beads used in the process are novel and part of the invention.
摘要:
This invention discloses electrified freeze-dried hydrocolloid gels, having modified structures with improved properties, as well as methods for the preparation of these modified gels and their uses. Specifically gels modified by electrification and freeze-drying undergo changes including creation of concentric layers of gel and intervening spaces.
摘要:
The invention provides sponges (foams) produced from hydrocolloids by the expansion of gels of these. The foams have properties which can be varied, such as water absorption, biodegradibility, pore size and structure. Edible products can be produced which may contain an edible plasticizer, a sugar or sugar substitute and possibly also a flavoring agent or taste enhancer. The novel sponges are produced by preparing a gel of a hydrocolloid, and either sealing it in a closed vessel with a liquid of similar composition, pressurizing the vessel and abruptly releasing the pressure, followed by freeze drying, or by incorporating in such a gel a suitable microorganism, such as a yeast and inducing fermentation in the presence of a suitable nutrient medium, so that the carbon dioxide formed results in the expansion and foam formation, which is processed to the final product. The sponges-foams of the invention are such, that the initial network of the gel is maintained.