Invert sugar, production

Berlin Institute Method. This method is for determination of invert sugar in products containing not more than 10% invert in the presence of sucrose. It is a copper reduction method that utilizes MbUer s solution, which contains sodium carbonate. 

Uses. High fmctose symp is used as a partial or complete replacement for sucrose or invert sugar in food appHcations to provide sweetness, flavor enhancement, fermentables, or humectant properties. It is used in beverages, baking, confections, processed foods, dairy products, and other apphcations. Worldwide HES production in the 1994—1995 fiscal year was estimated at about 8.6 x 10 t (dry basis) (18). About 75% of total world production is in the United States. 

Sucrose degrades in acid far more easily than in alkali, and invert sugar (the product of acid hydrolysis) is far more reactive in alkali than in acid. 

Because alkali degradation of sucrose does not result in inversion products, in slightly alkaline solution (pH < 8.5), the loss of sucrose to invert sugar (glucose + fructose) is a consequence of the acid hydrolysis mechanism, which provides D-glucose and D-fructose for further alkaline degradation. 

An important consequence of sucrose degradation is the development of color from degradation products. Kuridis and Mauch60 have developed an equation for the prediction of color development in model sucrose solutions. Color development was expressed as a function of temperature (90 to 120°C), time (0 to 80 min), pH (7.5 to 9.5), and composition of the solution (sucrose 20 to 60%, invert sugar 0.02 to 0.18%, and amino acids 1 to 3 g/L). The authors claimed, with caution, that the effects of an intended alteration in a unit process in the refinery can be predicted in advance. 

INVERT (SUGAR) The product of the hydrolysis of sucrose an equal mixture of D-glucose and D-fructose. 

Pure honeys are comparatively costly. Some beekeepers may imlawfully use sweeteners to feed bees to increase honey sweetness. Another unlawful act is to directly add sugars into honey products. Some sweeteners that have been used include acid / inverted sugar syrups, com syrups, maple syrup, cane sugar, beet sugar, and molasses. 

Heterogeneous catalysts, particularly zeolites, have been found suitable for performing transformations of biomass carbohydrates for the production of fine and specialty chemicals.123 From these catalytic routes, the hydrolysis of abundant biomass saccharides, such as cellulose or sucrose, is of particular interest. The latter disaccharide constitutes one of the main renewable raw materials employed for the production of biobased products, notably food additives and pharmaceuticals.124 Hydrolysis of sucrose leads to a 1 1 mixture of glucose and fructose, termed invert sugar and, depending on the reaction conditions, the subsequent formation of 5-hydroxymethylfurfural (HMF) as a by-product resulting from dehydration of fructose. HMF is a versatile intermediate used in industry, and can be derivatized to yield a number of polymerizable furanoid monomers. In particular, HMF has been used in the manufacture of special phenolic resins.125... 

Tables have been published relating Baume, Brix and specific gravity. As density is temperature dependent it is necessary to either bring the syrup to a fixed temperature or, as is more common in practice, to use temperature correction factors or tables. The relationship between density and concentration is slightly different for invert sugar or glucose syrups. The Brix scale is sometimes applied to products that are not sucrose syrups, such as concentrated fruit juice. Recipes are certainly in use that state boil to x Brix . In practice these instructions mean that the material should give the same reading as a sugar syrup of that concentration. As often happens in confectionery these practices have been proved to work empirically.

Molasses are the product left when no more sugar can be extracted. Beet sugar molasses are unpleasant in taste and are not normally used for human food. Cane sugar molasses do have some food use, normally in the form of treacle, which is clarified molasses. The ratio of sugar to invert sugar in treacle can be altered to some extent to assist product formulation. In practice different sugar syrups are blended with the molasses to give the desired product. Treacle is normally stored at 50°C to maintain liquidity. 

The use of invert sugar has declined since glucose syrup is cheaper and, for some uses, has superior properties. Some people take the view that invert syrup improves the flavour of some products. 

Sorbitol is produced by high-pressure catalytic hydrogenation of glucose derived from cornstarch. It can also be produced as a co-product with mannitol if invert sugar (50% glucose, 50% fructose) is used as raw material. 

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