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Storage product dry and modified starch, dextrins, sago

Year of fee payment : 4. Effective date : Year of fee payment : 8. Year of fee payment : The present invention is directed to sago fluidity starch and the use thereof. Such fluidity starches exhibit exceptionally fast gelling properties, high gel strengths, and exceptional elasticity.

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Packaging EndUser: Starch- and Dextrin-Based Adhesives

Kind code of ref document : A1. Effective date : Ref country code : GB. Ref legal event code : IF Ref document number : Country of ref document : AT. Date of ref document : Kind code of ref document : T. Ref country code : GR. Kind code of ref document : B1. Ref country code : CH. Ref legal event code : EP. Country of ref document : DE. Ref country code : DK. Ref legal event code : T3. Ref legal event code : NV. Ref country code : ES. Ref legal event code : FG2A.

Country of ref document : ES. Kind code of ref document : T3. Ref country code : PT. Ref legal event code : SC4A. Ref country code : MC. Payment date : Year of fee payment : 7. Ref country code : LU. Ref country code : IE. Ref country code : LI. Ref legal event code : PL.

Ref legal event code : MM4A. Year of fee payment : Ref country code : FI. Ref country code : AT. Ref country code : SE. Ref legal event code : EBP. Ref country code : FR. Ref country code : BE. Ref country code : DE. Ref country code : IT. Ref country code : NL. Owner name : A. Ref legal event code : V1. Ref legal event code : R Ref legal event code : ST. Ref legal event code : FD2A. This invention relates to dry thinned starches, continuous processes for producing dry thinned starches and to compositions and products thereof.

More particularly, the invention relates to dry thinned starches produced in a continuous process under specified interrelated process conditions. It also relates to compositions incorporating such starches such as paper sizing and coating compositions and to paper products produced from such compositions.

The present invention produces dry thinned starch. The dry thinned starches are produced by continuously feeding a mixture of a base starch and a chemical which hydrolyses the glycosidic linkage of starch to a plug flow reactor, passing the mixture through the reactor, recovering the mixture and neutralizing the mixture.

The invention also includes starches produced by the process and paper products produced from the starch. Figure 1 is a schematic flow diagram of a dry thinning process. Starches are widely used in paper coating formulations to give the required rheology, water holding, and binding properties. Typically, low viscosity starches are required to achieve high solids in the coating system. High solids are needed to reduce the drying cost and to reduce surface deformation due to excessive shrinkage of the surface layer during drying.

Another requirement of such starches is that they exhibit resistance to retrograding, i. Hydroxyethylated dent corn starches are presently used in such coatings because they are low cost and their cooked pastes resist retrogradation substantially better than unmodified dent corn starch. Thinned unsubstituted waxy starches have the same or greater resistance to retrogradation than the hydroxyethylated dent starches and are less expensive to produce. Low viscosity starches are prepared by reducing the molecular weight of the starch polymers.

Most common processes use either an acid, an enzyme, or an oxidizing agent for molecular weight reduction. These thinning reactions are typically carried out in an aqueous slurry of the starch. For example FR-A describes a method of producing starch products by submitting chemically modified starch to extrusion cooking. Upon thinning the starches to the preferred viscosity, it becomes necessary to filter the starch from the slurry so that it can be dried and recovered.

Some of the soluble starch and salts of neutralization generated by the thinning reaction are substantially lost in the effluent. This results in a significant economic loss due to yield loss, drying inefficiencies and an increased load on the effluent treatment facilities. In the case of hydroxyethylated starch, a portion of the hydroxyethyl substituent is also lost which increases the economic disadvantages of its use.

An alternate route for making starches with the above performance characteristics, but without the economic loss resulting from present processes, has been found. The essential characteristics of this method are the injection of a glycosidic hydrolyzing chemical into starch which is in a non-slurry state, heating at a temperature and for a time necessary to produce a starch with the required viscosity, and then neutralization.

No washing of the final product is required. This process can be used for any type of starch to be thinned. Dry thinned waxy starch products allow higher solid concentration compositions that give the same viscosity as lower concentration modified starch compositions.

In paper manufacture, this is an advantage at the sizepress and coater which are both viscosity constrained. Waxy starch is unique in this feature compared to modified or unmodified dent corn starch.

A process has been developed for the continuous dry reaction of starch. This process is used for reduction of molecular weight thinning via chemical hydrolysis of the glycosidic linkages of starch.

A preferred means of chemical hydrolysis is by gaseous acidification. A primary use for these starches is in the paper industry. They will be used at the size press and on paper coaters.

Their purpose is to add viscosity flow properties and water holding to the coating colors and strength to the sheet at the size press. Any starch source including common dent corn, waxy maize, potato, waxy milo, arrowroot, wheat, rice, tapioca and sago starches can be thinned by this process.

The preferred base starches for paper applications are waxy starches amylopectins derived from waxy maize due to their resistance to retrogradation. Chemical modification contributes resistance to retrogradaiton via steric hindrance. Linear starch chains are prevented from aligning due to the addition of substituents. Such starches include starches modified with epoxides such as ethylene oxide, propylene oxide and epichlorohydrin. Of these, starches modified with ethylene oxide are preferred in paper applications.

The source starch can be chemically modified by other means such as 1 bleaching with hydrogen peroxide, ammonium persulfate, chlorine, chlorite and permanganate; 2 oxidation with chlorine; 3 esterification with acetic anhydride, phosphates, octenyl succinic anhydride, phosphorous oxychloride, succinic anyhydride and vinyl acetate; 4 etherification with acrolein or 5 formation of cationic derivatives with reagents such as 2,3-epoxypropyltrimethylammoniumchloride or 4-chlorobutene-2 trimethylammoniumchloride prior to the dry thinning process.

Such starches are well known in the art and are commercially available. Staley Manufacturing Co. Although not as resistant to retrogradation, useful starch products can also be prepared by the process of the invention from common dent corn starch.

The dry thinned modified starches produced by this process can be used in food and textile applications in addition to the described paper applications.

In such cases, the dry thinned modified starches are used to replace modified starches which have been thinned in traditional aqueous slurry processes. A dry thinning process has been discovered wherein the molecular weight of base starches is reduced by the reaction of the starch with a glycosidic hydrolyzing chemical in a continuous reactor.

Viewed from a further aspect the invention also provides a thinned starch obtainable by the process of the invention. Viewed yet further the invention also provides a coated paper product comprising a paper sheet and a coating comprising conventional colour coat and sizing components such as pigments and fillers and dry thinned starch obtainable by the process of the invention.

Viewed still further the invention also provides a paper product comprising a paper sheet and dry thinned starch produced by the process of the invention. The base starch used in the process of the invention may for example by a waxy maize starch, a dent corn starch e.

Any chemical which hydrolyses the glycosidic linkage of starch in the reaction conditions described can be used in the invention. There are three primary groups of hydrolyzing chemicals that can be used. Group I includes acids such as hydrogen chloride gas gaseous HCl , hydrochloric acid HCI and sulfuric acid; Group II includes oxidants such as ammonium persulfate, hydrogen peroxide and chlorine gas; and Group III includes acids such as sulfur dioxide gas, carbon dioxide gas, nitric acid, phosphoric acid, monochloroacetic acid, ammonium chloride Lewis acid and calcium chloride Lewis acid.

This application claims the priority, under 35 U. The present invention relates to a glue composition based on enzymatically modified starch EMS which has been treated with a branching enzyme and has a highly homogeneous molar mass distribution and excellent bonding properties. Starch is a polymer formed of glucose units which are linked by alpha-1,4 glycoside and alpha-1,6 glycoside bonds.

US Preselected enzyme cleavage points are stable in blood but are cleavable within cells; use in drug delivery such as of antitumor agents. WOA8 Monocotyledon plant cells and plants which synthesise modified starch. US DNA sequences coding for enzymes capable of facilitating the synthesis of linear alpha-1, 4 glucans in plants, fungi and microorganisms. WOA1 An improved procedure for separating starch from comminutates of plant materials. US Corn steep for use in the generation of human and animal feeds.

Packaging EndUser: Starch- and Dextrin-Based Adhesives

To browse Academia. Skip to main content. You're using an out-of-date version of Internet Explorer. Log In Sign Up. Industrial production, processing, and utilization of sago palm-derived products Carbohydrate Polymers,

CA2887354A1 - Process for preparing an inhibited starch - Google Patents

Starch , a white, granular, organic chemical that is produced by all green plants. Starch is a soft, white, tasteless powder that is insoluble in cold water , alcohol, or other solvents. The basic chemical formula of the starch molecule is C 6 H 10 O 5 n. The simplest form of starch is the linear polymer amylose; amylopectin is the branched form. Starch is manufactured in the green leaves of plants from excess glucose produced during photosynthesis and serves the plant as a reserve food supply.

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Tapioca is a major horticulture crop cultivated on nearly 3 lakh hectares in the State, producing 60 lakhs tonnes of the crop. This is the major crop in the districts of Salem, Namakkal, Erode, Tiruvannamalai, Villupuram, Dharmapuri and Karur, and sustains more than three lakh farmers. A significant section of them are tribals. Some sago and starch factories depend on this crop. Salem has traditionally been known as the land of sago and starch. Tapioca cultivation is taken up by thousands of farmers in Salem district. In the district, out of the total 60, hectares coming under various horticulture crops, 22, hectares is under tapioca crop.


Process for Preparing an Inhibited Starch The present invention provides a process for preparing an inhibited starch. The present invention also provides an inhibited starch obtainable by the process according to the present invention, a use of the inhibited starch for the preparation of a food product and a food product comprising the inhibited starch. Starch is a very important ingredient in the food industry, for example as a thickening agent or stabiliser.

Free Papers. Starch is a soft, white, tasteless powder that is insoluble in cold water, alcohol, or other solvents. The basic chemical formula of the starch molecule is C6H10O5 n.

Starches separated from three black gram cultivars were modified by acetylation and compared to their native starches. Acetylation was carried out by treating starches with 0. The extent of acetylation increased proportionally with the concentration of acetic anhydride used. The pasting curves of Differential scanning calorimetry observations also revealed significant decrease in gelatinisation temperature of acetylated starches than native starches. Hardness and adhesiveness of starch gels varied between The black gram Phaseolus mungo L. It is deposited in partially crystalline granules which differ in molecular structure and morphology between and within varieties of plant species. Starches with a wide range of functional properties are needed for such a diverse range of end uses Copeland et al. Starch is present as a macro-constituent in many foods and its properties and interactions with other constituents, particularly water and lipids are of interest to the food industry.

Figure Suppliers of Dextrins and other Modified Starches to South Africa in WFM Starch Products, Natal Starch, Noukloof Store, Consolidated Starch Industries, Ingredion, Cargill, Tate and Lyle,. Mondi, Sappi, RCL Sago palm and In contrast to maize, wheat starch is produced by first dry milling to flour.

CA2887354A1 - Process for preparing an inhibited starch - Google Patents

Ltd, Zhengzhou, China. Starch has received much attention as a promising natural material both in biomedical fields and waste water treatment due to its unique biological and adsorptive properties. Recently, the modification of starch is rapidly developed along with its growing applications. This review focuses on the ways of chemical modification of starch including cross-linking, grafting, esterification, etherification, dual modification and so on, and presents the applications of the modified starch in fields like drug delivery, tissue engineering and heavy metal and dye removal. The article was received on 08 Jun , accepted on 30 Jul and first published on 06 Aug If you are not the author of this article and you wish to reproduce material from it in a third party non-RSC publication you must formally request permission using Copyright Clearance Center.

US20020009532A1 - Sago fluidity starch and use thereof - Google Patents

You need to enable Javascript in your browser to use most features on our website. Premium Members. Listing Type. We would like to receive the best and specific quotes from qualified suppliers of sago starch. We are looking to find reliable suppliers who can supply to us starch with consistent quality on a regular basis. Need some help?

An interview with Joe Eisley, National Starch Food Innovation

Contents - Previous - Next. The flour produced from the cassava plant, which on account of its low content of noncarbohydrate constituents might well be called a starch, is known in world trade as tapioca flour. It is used directly, made into a group of baked or gelatinized products or manufactured into glucose, dextrins and other products.

Organic potato starch for Gluten-free products

Increasingly consumers buy gluten-free products for perceived health benefits or weight management. Increasingly there is also a demand for organic gluten-free products especially for this broader group of health conscious non-celiac consumers. Europe is the largest gluten-free market but North America is the fastest growing market.

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