Sugar Composition Comprising Soluble Fibre
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Europaisches Patentamt European Patent Office © Publication number: 0 465 520 B1 Office europeen des brevets © EUROPEAN PATENT SPECIFICATION © Date of publication of patent specification: 31.05.95 © Int. CI.6: C13F 3/00, A23L 1/308 © Application number: 90905217.7 @ Date of filing: 29.03.90 © International application number: PCT/GB90/00466 © International publication number: WO 90/12117 (18.10.90 90/24) Divisional application 94203013.1 filed on 29/03/90. The file contains technical information submitted after the application was filed and not included in this specification Cm) SUGAR COMPOSITION COMPRISING SOLUBLE FIBRE. ® Priority: 31.03.89 GB 8907313 © Proprietor: British Sugar pic PO Box 26 @ Date of publication of application: Oundle Road 15.01.92 Bulletin 92/03 Peterborough PE2 8QU (GB) © Publication of the grant of the patent: @ Inventor: DESFORGES, Malcolm 31.05.95 Bulletin 95/22 Orchard House 8 High Street © Designated Contracting States: Ketton, Near Stamford AT BE CH DE DK ES FR GB IT LI LU NL SE Lincolnshire PE9 3TA (GB) Inventor: COOPER, Julian, Michael © References cited: 3 Fen View EP-A- 0 035 643 Dereham US-A- 3 305 447 Norfolk NR19 1LL (GB) 00 "Technologie des Zuckers", Verein der Zuc- kerindustrie, 1955, Verlag M & H Schaper CM m (Hannover, DE), pages 34-37, 132-133 m CO Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid (Art. 99(1) European patent convention). Rank Xerox (UK) Business Services (3. 10/3.09/3.3.3) EP 0 465 520 B1 Food technology, vol, 33, no.1, January 1979, Inventor: WILLIAMS, Edward, Lloyd Institute of Food Technologists, "Dietary Fl- 4 Saint Walstan's Close ber", pages 35-39 Costessey Norwich Norfolk NR5 OTW (GB) 0 Representative: Hallybone, Huw George et al CARPMAELS AND RANSFORD 43 Bloomsbury Square London WC1A 2RA (GB) 2 EP 0 465 520 B1 Description This invention relates to a unique sugar composition containing soluble fibre. The sugar composition has substantially the properties of normal Sugar, but advantageously contains a significant amount of 5 dietary fibre, with consequent health benefits. The invention also provides a novel type of soluble fibre derived from sugar beet and a method for preparing it. Recently, an increase in dietary fibre intake has been recommended for the U.K. population. Over recent years, the proportion of soluble fibre has decreased in the population diet, whilst the insoluble fibre proportion has increased. io Various suggestions have been made to introduce dietary fibre into the diet of humans, but none has found widespread acceptance. Soluble fibre in the diet is most usually supplemented by means of oat bran or of breakfast cereals enriched with oat bran. Many people find such bran-enriched products distasteful and a majority of the population cannot be expected to consume such bran-enriched diets over the long term. 75 Sugar compositions containing soluble dietary fibre generally are known. The water-soluble fibre pectin is commonly used as a gelling agent by the food industry, e.g. in jam production. The pectin used in jam production is normally apple or citrus pectin or the naturally occurring pectin in the fruit. The applicant herein markets a jam sugar made by coating damp granulated sugar with a premix containing apple pectin, citric acid and icing sugar in equal quantities by weight. The end product contains 0.67% pectin by weight. 20 A jam sugar containing citrus pectin is also known. Generally, jam sugars contain less than about 1% by weight pectin. The purpose of a jam sugar is to impart sweetness to a jam and more importantly to cause the jam to set or gel. Compositions containing fibre useful as a gelling agent (e.g. apple or citrus pectin) cannot be used in beverages or cooking as a sugar substitute. US-A-3305447 describes a tabletting sugar and method of preparation thereof. The tabletting sugar is 25 made by blending, under vigorous mixing conditions, an admixture comprising binding agent and sugar to yield a substantially dry, homogeneous sugar admixture. The substantially dry, homogeneous sugar admixture is then subjected to grinding, compacting and further grinding to yield a sugar product useful in the manufacture of sugar tablets. The binding agent is usually invert syrup or corn syrup, but may comprise the other binding agents in syrup form, such as dextrin, alginates, carboxymethylcellulose, vegetable gums 30 and mixtures thereof. One source of fibre is sugar beet. The principal use of sugar beet fibre is currently in animal feedstuffs. The crude pulp is very distasteful to people and therefore cannot be used as human food. Of the purified, soluble beet fibres, beet pectin has probably attracted most attention. Beet pectin is designated a "pectin" because it contains galacturonic acid, but it has acetate ester groups attached to the polygalacturonic acid 35 and for this reason it does not gel, or at least not in a manner satisfactory to the food industry. As a food product, therefore, beet pectin has not yet found any substantial application. Commercial preparations of dietary fibre from sugar beet pulp are known. The product sold as Fibrex™ by a subsidiary of the Swedish Sugar Company is an example of such a preparation. Another example is the product sold as Duofiber™ by the American Crystal Sugar Company. These preparations suffer the 40 limited acceptance of pure fibre products and have low palatability. The present applicant sells a whole beet fibre product as Beta-Fibre™ , which has been successful in the health food market. Araban is one fraction of water-soluble dietary fibre obtainable from sugar beet. The extraction process involves treating a slurry of beet pulp at elevated temperature with calcium oxide. Water-soluble beet fibre is also found in beet molasses, the liquor remaining after sugar has been 45 extracted from sugar beet. Beet molasses contains sugar, soluble fibre and a miscellany of other by- products of sugar extraction, for example nitrogen compounds. Two thirds of the solids consist of sugar and, because soluble polysaccharide is adhesive, readily clogging the extraction equipment, the soluble polysaccharide content is deliberately kept to a minimum (usually less than 1% by weight although levels as high as 1 .56% have been reported). Beet molasses is suitable for feeding to livestock, but is unpalatable 50 to humans. The object of the present invention is to provide a sugar composition having substantially the appearance and taste of ordinary sugars, whilst providing a significant source of soluble dietary fibre. The intention of the present invention is that the sugar composition of the present invention can be used as a direct replacement for sugar, in any form. It may be, for example, sold in retail outlets alongside normal 55 sugar products or used, in bulk, by the food industry. The present invention provides a solid, particulate, sugar product comprising crystalline sugar coated with a non-gelling water-soluble dietary fibre, the sugar product consisting of from 90 to 99% by weight sugar and from 10 to 1% by weight of non-gelling water-soluble dietary fibre. 3 EP 0 465 520 B1 Our experiments have shown that, not only does the sugar composition of the present invention increase the level of dietary fibre intake without a noticeable taste or texture, but additionally that an advantageous lowering of cholesterol arises through use of the fibre employed in the composition of the invention. 5 Since the fibre is water-soluble and significant quantities of insoluble fibre are not present, the dry compositions may be dissolved without the formation of an insoluble residue, this is important not only in the preparation of syrups but also in other applications, for example in the use of the compositions as a beverage sweetener. The sugar composition essentially contains only natural products, therefore meeting the growing io demand for natural, additive-free foods. Preferably, the sugar is sucrose, but may be a mixture of sugars. The dietary fibre may be a soluble polysaccharide or a mixture of soluble polysaccharides derived from sugar beet or other fibre which gels too poorly for use as a gelling agent (for example gum arabic or viscosity reduced guar), or a mixture of such fibres. is As used herein, the term "non-gelling" used in relation to a fibre connotes a fibre which gels too poorly for use as a traditional gelling agent to set foodstuffs. Traditional gelling agents include such substances as citrus or apple pectins and lower ester pectins. A "non-gelling" fibre of the present invention may increase viscosity to some extent, but does not produce a gel under conditions associated with traditional gelling agents. It will be understood that a principal object of the invention is to provide a sugar composition having 20 substantially the appearance and taste of sugar and excessive increases in viscosity or actual gelling are not acceptable. We have now also discovered in experiments with rats that soluble sugar beet fibre has cholesterol lowering properties, i.e. has a hypocholesterolaemic effect. Soluble fibres also have a beneficial effect on blood glucose and mineral availability. 25 Therefore, preferably, the water-soluble fibre is a non-gelling sugar beet water-soluble fibre. The fibre may however be derived from other varieties of the species Beta vulgaris, for example fodder beet, as well as from other plants. In a second aspect, the present invention provides a sugar composition consisting of from 90 to 99% by weight sugar and from 10 to 1% by weight of a non-gelling water-soluble dietary fibre wherein the non- 30 gelling water-soluble dietary fibre is sugar beet fibre or a mixture of sugar beet fibre and other non-gelling water-soluble dietary fibre.