Soluble fibre

When dietary fibre became a nutrition issue it was assumed that the insoluble fibre such as bran was the most beneficial subcomponents. It now appears that soluble fibres can lower blood cholesterol while insoluble fibre such as wheat bran merely speeds up the transit of food through the gut. Developments in this area are awaited. 

Hall, M.B., Lewis, B.A., Van Soest, P.J. and Chase, L.E. (1997) A simple method for estimation of neutral detergent-soluble fibre. Journal of the Science of Food and Agriculture 74, 441 49. 

FOS and oligofuctose are fructose oligomers that are either produced by enzymic conversion of sugar or extracted from chicory, as inulin, and then hydrolysed. These products behave as soluble fibres and prebiotics. In acid conditions, they can hydrolyse, but are usually sufficiently stable for short-shelf-life juices, near-water products with low acid levels or powdered soft drinks. Prebiotic activity varies with preparation and required daily dose can be as low as 2.5-5.0 g/day for shorter chain FOS preparations (DP 2 1). Some positive effects on magnesium absorption and calcium absorption (in some populations) have also been shown (Beghin Meiji, 2001). 

Products are available in dry or syrup form. They have a lower sweetness than sucrose, RS = 0.3-0.6. The caloric value in the EU is 2 kcal/g. They are relatively hygroscopic and have good solubility. Use in soft drinks and juice products is as a sugar replacer, soluble fibre and prebiotic. 

It is currently used to improve mouthfeel and as a soluble fibre, prebiotic and partial sugar replacer in soft drinks. 

There is a growing interest in the inclusion of soluble fibre into the diet to help improve health. This is extending to drinks as well, with such fibre being added to milk- and fruit-based products such as smoothies . One source of soluble fibre which has attracted attention over the last few years is inulin or oligofiuc-tans. Inulin consists of oligosaccharides that are extracted from chicory or Jerusalem artichokes and that are claimed to improve colon function and to have prebiotic properties, enhancing the working of the gut. Inulin is a complex carbohydrate which can be assayed in a number of different ways. However, there are two published methods in the AO AC manual for its analysis (997.08 and 999.03). 

Western diets are generally high in refined foods and low in fibre content. Fibre may be insoluble, for example cellulose, or soluble, for example pectin from plants. Insoluble fibre binds water, increases the bulk of the faeces and increases rapidity of transit through the intestine. Soluble fibre slows absorption of cholesterol and reduces blood cholesterol concentration. 

Water soluble fibre processing aid which imparts low fibre to metal and medium to high fibre to fibre friction together with good antistatic properties. DRAFCOL S6H is recommended for use on man-made fibres and their blends on a wide variety of processing systems. 

Viscous (soluble) fibres, e.g. ispaghula, are effective and more palatable than bran. Ispaghula husk contains mucilage and hemicelluloses which swell rapidly in water. Methylcellulose takes up water to swell to a colloid about 25 times its original volume and sterculia, similarly, swells when mixed with water. 

They are plant extractives, not digested but are soluble fibres -Low calorie foods. 

Soluble fibre Increases risk of coronary heart... 

Another group of polysaccharides consists of gums and mucilages, which do not dissolve in water but swell. On hydrolysis they give both pentoses and hexoses and also uronic acids, which are formed by oxidation of the aldehyde function of the basic sugar. These are also referred to as non-starch polysaccharides, or soluble fibres. See chapter VII for more details. 

A06A C Bulk Producers Within this group there are fibres, which consist of plant polysaccharides and lignins. Fibres can be divided into non-soluble and gelforming. The non-soluble fibres are resistant against any effect of the intestinal bacteria, while the... 

Pectin, guar and glucomannans are examples of gel-forming fibres, whereas cellulose, lignins and seed coats are examples of nonsoluble fibres. The non-soluble fibres bind water and swell and keep water in the intestine, while the gel-forming fibres are degraded, which make them unsuitable as laxatives. 

Protein Dietary fibre Soluble fibre Carbohydrates Ash... 

Pandey, M., and A. Khan. 2002. H) oglycaemic effect of defatted seeds and water soluble fibre from the seeds of Syzygium cumini (Linn.) Skeels in aUoxan diabetic rats. Indian. Exp. Bid. 40(10) 1178-1182. 

Fukunaga T., Sasaki M., Araki Y., Okamoto T., Yasuoka T., TsujikawaT., Fujiyama Y., BambaT., Effects of the soluble fibre pectin on intestinal cell proliferation, fecal short chain fatty acid production and microbial population. Digestion, 67(1-2), 2003, 42-49. 

Source of soluble fibre Beer Preedy (2009) Walzl (2009)... 

In the case of based on poly(vinyl alcohol) soluble fibres, SOLVRON-SX, the sonic solicitation was realised using two ceramic piezoelectric transducers, placed at distance of 12.5 and 17.5 cm, respectively, in different conditions of applied force, P. During solicitation step, the experiments were carried out in standard environmental conditions and both in air and acetone (non solvent of PAV). As Table 3.121 shows the solicitation induced in the relaxation stage the corresponding modification of the ultrasonic rate. The dependence of ultrasonation modulus, and rate, v, with the developed force, P, in the solicitation and relaxation stage, respectively, is illustrated in Figures 350 and 351. 

Method for producing a cheap soluble protein fibre having the requisite strength for use in protein processes. This patent is intentionally seeking to design a soluble fibre which could be dissolved... 

Soluble fibre Non-starch polysaccharides which are soluble in water pectin and the plant gums and mucilages. 

Fructooligosaccharides are water-soluble sweet substances, which show 40-60% of the saccharose sweetness. They are not hydrolysed by saccharidases and therefore are classified as soluble fibre. In the colon, however, fructooligosaccharides are fermented... 

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