The Essential Role of Sugar in Food and Health

Sugar is a vital ingredient in food recipes, providing the essential taste of sweetness that enhances the flavor of countless dishes. Found in many of our daily foods and drinks, sugar is an omnipresent component of modern cuisine. By definition, sugar is a sweet crystalline or powdered substance, white when pure, consisting of sucrose obtained mainly from sugar cane and sugar beets. It is used in various foods, drinks, and even medicines to improve their taste.

In culinary terms, sugar delivers one of the primary taste sensations—sweetness. This sensory appeal makes sugar a staple in baking, confectionery, and beverage production. The process of making sugar involves extracting juice from sugar cane or beets, filtering, concentrating, and purifying it until sugar crystals form. The result is the white sugar commonly used in households and food industries.

Beyond its role in cooking, sugar plays a crucial biological function. Simple sugars, or monosaccharides like glucose, store energy that biological cells use and consume. These sugars are fundamental to metabolism and energy production in living organisms. In ingredient lists, sugars are often identified by names ending in "ose," such as glucose, fructose, and sucrose.

Despite its benefits, the excessive consumption of sugar is linked to health issues like obesity, diabetes, and heart disease. Therefore, while sugar is indispensable for its flavor and energy-providing properties, it should be consumed in moderation to maintain a balanced diet and good health.
The Essential Role of Sugar in Food and Health

Sucralose

Sweeteners can be categorized to natural and synthetic. The natural ones are the most nutritive dietary sweeteners like sucrose, fructose, lactose and maltose.

Sucralose is the only non-caloric sweetener made from sugar and it was approved by the FDA for use in a wide variety of food products including soft drinks.

Sucralose is trichloro-galacto sucrose which is formed by chlorination of sucrose. It is safe to use as it does not contribute calorie and does not cause dental caries

Sucralose initially is made from sugar; however, it is not metabolized and does not release sugar to the body after consumption.

Discovered in 1976, this sweetener has been developed jointly by McNeil Specialty Products Company and Tate & Kyle, Plc an expert in sweetness and starches. It was approved to be used as tabletop sweetener during 1998.

Sucralose has a pleasant sweet taste and its quality and temporal profile is very close to sucrose. A sweetness potency of sucralose is around 600-650 times that of sucrose.
Sucralose

Artificial sweetener

Sweeteners are categorized as nutritive and non-nutritive sweeteners. Non-nutritive sweeteners (NSSs) classification includes artificial sweeteners and natural non-caloric sweeteners. Non-nutritive sweeteners (artificial sweeteners) are produced from extracts of plants or by safe chemicals.

Artificial sweeteners provide the sweetness of natural sugar without the calories and produce a low glycemic response.

Artificial sweeteners are at least 30 times sweeter than sucrose, smaller amounts are needed to create the same level of sweeteners, and which are either not metabolized in the human body or do not significantly contribute to the energy content of foods and beverages.

The U.S. Food and Drug Administration (FDA) regulates artificial sweeteners through the Food Additives Amendment to the Food, Drug and Cosmetic Act, passed by Congress in 1958. This law requires the FDA to approve food additives, including artificial sweeteners, before they can be made available for sale in the United States.

These sweeteners are widely used in baked goods, carbonated beverages, powdered drink mixtures, jams, jellies and dairy products.

Artificial sweeteners used in processed foods are aspartame, acesulfame potassium, sucralose, saccharin, cyclamate, neotame, alitame, rare sugars, xylitol and D-allose.

The main reasons for using artificial sweeteners are weight lose, dental care, diabetes mellitus, reactive hypoglycemia and low cost.
Artificial sweetener

Application acesulfame K in low calorie beverages

Acesulfame k can be used as a sweetening agent on a wide range of products for instance in low calorie products, diabetic foods, sugarless products, oral hygiene preparations, pharmaceuticals, and animal feeds. Low-caloric and calories-reduced beverages are a highly important field of applications for acesulfame K.

Acesulfame is suitable for low calories and diet beverages because of its good stability in aqueous solution even at low pH typical of diet soft drinks.

As with all intense sweeteners, sweetness potency of acesulfame K relative to sucrose decreases with increasing concentration and varies with the medium in which the sweetener is being tested and the method used for quantifying sweetness.

The taste profile of acesulfame K is generally considered to be superior to saccharin.

It has a rapid onset time but the sweetness quality is marred by a bitter astringent aftertaste that is particularly noticeable at higher concentrations.

The taste quality of blends with acesulfame K with other sweetness is superior to single sweeteners even at the fairly high sweetens level of these beverages.

When acesulfame K is blended with other sweeteners for beverage use, it may be reasonable to deviate from blend rations which provide the highest synergistic sweetness enhancement.

Especially in blends of acesulfame K and aspartame variation of blend rations allows modifications of the time-intensity profile of sweetness and adaptation to flavour profiles.

High levels of synergisms (30% and above) occur with aspartame and to a lesser extent with cyclamate, glucose, fructose and sucrose.

Acesulfame K containing beverages can be pasteurized under normal pasteurization conditions without loss of sweetness.

Pasteurization for longer periods at lower temperature is possible, as is short-term pasteurization for a few seconds at high temperature.
Application acesulfame K in low calorie beverages

Sweetener of thaumatin

The number for this sweetener: E 957.  It is a naturally sweet protein approximately 2000 times sweeter than sugar which is used at very low levels, typically 0.5-3 ppm.

Thaumatins are a group of intensity sweet basic proteins isolate from the fruit of Thaumatococcus danielli Bennett, which grows in West Africa. Fruits are harvested and part processed to remove the section known to contain thaumatin.

In practical terms, it is perhaps one of the least important of the permitted sweeteners in terms of use in soft drinks in that its taste quality makes it unsuitable for use as a sweetener except in products where a lingering licorice aftertaste can be tolerate.

It was recognized early on that if thaumatin contributed more than 50% of the sweetness, then the aftertaste became markedly noticeable.

Thaumatin was first permitted as a natural food in Japan in June 1979. In the UK it has been permitted as a sweetener for use in foods since 1983. It is an appropriate component in soft drinks when used at low levels in combination with sweeteners with rapid sweetness development.
Sweetener of thaumatin 

Polysaccharides of inulin

Inulin is extracted commercially from chicory root, which has high inulin content (15%).

Inulin is a linear molecule consisting of approximately 3-60 fructose units linked by β (2-1) bonds.

Inulin is soluble in water (maximum 10% at room temperature) and forms a gel-type structure. It does hydrolyze in acid conditions over time to produce fructose.

It is suitable as dietary bulking agents. They are low-calorie and non-cariogenic. Adding inulin increases the dietary fiber content of the food. Such additions are usually in the range of 3-6 g/portion, in extreme cases up to 10 g.

It can be incorporated into a large number of different food products, which retain their intrinsic flavor without alteration of texture or appearance.

It heat stable. In soft drinks it can produce similar mouthfeel and technical properties to glucose syrup.

Inulin has no sweetness and possesses a bland taste. Physiologically inulin behaves as a dietary fiber.

Inulin may also be used to stabilize flavors. About 3 to 5% of inulin may be used in low-calories soft drinks.
Polysaccharides of inulin

Acesulfame K in food

Acesulfame K is freely soluble in water and also in aqueous alcoholic solutions with high water content. It is the generic name for the potassium salt of 6-methyl-1, 2, 3-oxathiazine-4 (3H)-one-2,2 dioxide.

Acesulfame K provides no energy. It was first approved for limited use by FDA in July 1988 and then additionally approved for use in beverages in 1998.

It is a noncariogenic, nonlaxative, intense sweetener used in a wide range of foods, including foods for diabetics. Acesulfame K has approximately 200 times the sweetness of sucrose at the 3% sucrose level. 

Food manufacturers use acesulfame K in chewing gum, powdered beverage mixes, nondairy creamers, gelatins and puddings.

Heat does not affect acesulfame K. So it is stable under heating condition used in the processing of foods. Pasteurization or ultra high temperature (UHT) treatment used for dairy products does not result in any loss of acesulfame K.

Acesulfame K may be used alone or in combination worth other sweetening agents. Combination systems are useful, particularly in products requiring bulking agents for texture or viscosity.

A sorbitol-acesulfame K blend for example is used in baked goods.
Acesulfame K in food

Fructose as a sweetener

Fructose is sweeter than table sugar. It is almost twice sweet as sugar. Fructose is a commercial sugar with same molecular structure as that in fruit.

Fructose was first extracted from cane sugar more than a century ago, and it’s found in varying amounts in such fruits as apples, grapes, oranges and berries.

Fructose can used as a sugar substitute in crystalline or syrup form. Most fructose used to sweeten commercial products is obtained from corn.

It has a low glycemic index, releasing out glucose into bloods stream slowly. Fructose produces liver glycogen rapidly making it a more efficient energy supply than other sweeteners.

It is monosaccharide sugar with an energy content of 4 kcals/g (17 kJ/g) but due to its increased sweetness can be used at lower levels than sucrose.

Fructose has been touted as a simple, natural and miracle sweetener; that is more healthful than white sugar.

It is also promoted as an aid to weight loss because it is sweeter than white sugar, enabling one to get the same sweetness with less sweetness.

Like sugar and salt, fructose is on the Food and Drug Administration’s list of additives ‘generally recognized as safe’.
Fructose as a sweetener

Sweetness and Sweetener Interactions

Sweetness and Sweetener Interactions
Sweetness is probably the first taste sensation recognized by human beings after birth. It is the main taste/flavor attributed to carbohydrate, even though relatively few carbohydrates are actually sweets. Human can recognize sweetness in hundreds, perhaps thousand, of different, vastly diverse molecules, yet very little is actually known about the sweet taste receptor and the sequence of biophysical events that take place for the sweet taste sensation to occur.

There is a theory named AH-B theory to explain what is needed structurally and chemically to make a molecule sweet. They postulated that a sweet molecule needed two points of attachment to sweet receptor. There was a proposed that the sweet taste receptor has at least eight points of attachment that can interact with a chemical to produce a sweet taste, attempting thereby to better explain the range of chemicals that taste sweet.

Only a few of many hundreds of known sweet chemicals are used in foods. Sucrose, common table sugar, constitutes the benchmark by which all other sweeteners are judge. Other food carbohydrates, with the exception of fructose and xylitol, are less sweet than sucrose, and the noncarbohydrates sweeteners are many times sweeter than sucrose.
Sweetness and Sweetener Interactions