CHAPTER
ONE
INTRODUCTION:
A
sugar substitute is a food additive that duplicates the effect of sugar in
taste, usually with less food energy. Some sugar substitutes are natural and some are synthetic. Those that are not
natural are in general, called artificial sweeteners. Artificial sweeteners and
other sugar substitutes are found in a variety of food and beverages marketed
as sugar free or diet including soft drinks, chewing gum, jellies, baked goods,
candy, fruit juice and ice-cream and yoghurt. (Whitney 2011) People may not all
like the same kind of baked treats but one thing we all agree on is that baked
treats should be sweets usually, sugar is used to lend sweetness to foods but
would cake taste just as good if the baker used a sugar substitutes instead of
sugar? Many people prefer not to use sugar often due to health reasons and
instead depend on sugar substitutes to sweeten their foods. But are sugar
substitutes the same as sugar? What exactly are the differences between sugar
and sugar substitutes? Sugar also known as sucrose comes from plants like sugar
cane and sugar beets and is a carbohydrate. Sugar adds bulk to cakes, cookies
and all kinds of treats; sugar
also causes browning and caramelizing in foods when
it is heated as when cookies turn golden brown in the oven
sugar is a natural substance, something that our bodies can use for energy. Sugar
substitutes come in three categories; artificial sweeteners, sugar alcohols and
natural sweeteners. Artificial sweeteners are attractive because they add
almost no calories to foods and are sometimes a part of weight loss programs.
Also they don’t increase blood sugar levels which mean that diabetics can use
them. Many artificial sweeteners like sucralose were discovered by accident in
the laboratory. In 1976, a scientist in England was studying different
compounds made from sugar. The scientist asked a student to test the compounds
but instead the student tested them. Another category of sugar substitutes is
sugar alcohols. Sugar alcohols are not alcoholic beverages they do not contain ethanol
which is found in alcoholic beverages. Sugar alcohols like sugar have calories
and energy but not as much as sugar. Sugar alcohols like artificial sweeteners
do not contribute to tooth decay and affect blood sugar levels slowly so
diabetics can use them. Although sugar alcohols like xylitol, sorbitol and
erythritol are manufactured products the sources are often natural. The last
category of sugar substitutes is called natural substitutes. The categories
include maple syrup, agave nectar and honey. These substances
are absorbed by our digestive system and contain calories and nutrients that
our bodies can use. (Michelle 2002)
The chart lists
some popular sugars categorized:
Artificial
|
Sugar
alcohols
|
Novel
|
Natural
|
|
Sweeteners
|
Sweeteners
|
Sweeteners
|
||
Acesulfame
|
||||
Potassium
|
Erythritol
|
Stevia
|
Extracts
|
Agave
nectar
|
(sunett,sweet
|
(pure
via, truvia)
|
|||
one)
|
||||
Aspartame
|
Hydrogenated
|
Tegatose
|
Date
sugar
|
|
(Equal,
|
Starch
|
(Naturlose)
|
||
Nutrasweet)
|
hydrolysate.
|
|||
Neotame
|
Isomalt
|
Trehalose
|
Fruitjuice
|
|
Concentrate
|
||||
Saccharin
|
Lactitol
|
Honey
|
||
(sugartwin,
sweet
|
||||
“N” low
|
||||
Sucralose
|
Maltitol
|
Maple
syrup
|
||
(splenda)
|
||||
Mannitol
|
Molasses
|
|||
Sorbitol
|
||||
Xylitol
|
(Robert.,
2011)
1.1
AIM AND OBJECTIVES OF THE STUDY
AIM:
To create an alternative to sugar by replacing the sweetness found in natural
sugar.
OBJECTIVES:
To
determine how the sweetness of sugar substitutes compare to the sweetness of
sugar. In this research sugar and sugar substitutes will be tested and the
sweetness will be compare in relation to sugar.
To
compare the availability and affordability of the active components in the
artificial sweetener and sugar
To
know the components of this artificial sweetener and what makes them taste
sweet
1.2
SIGNIFICANCE OF STUDY
Sugar substitute (honey) mimicking the taste of sugar
will be a better alternative to people who are suffering from health
impairment. Unlike sugar, honey has healthier glycemic index (GI) and certain
antioxidant and antimicrobial properties.
LITERATURE
REVIEW
2.1 TABLE SUGAR (SUCROSE): Sugar was brought to
the Americas by Christopher Columbus. At the time, sugar was processed by
boiling the cane juice and then harvesting the crystals left behind after the
water evaporated. These crystals contained protein, fiber, vitamins and
minerals. Sugar is generally extracted from plants sugar beet and sugar cane or
a main ingredient in many foods and recipes available as sucrose or saccharose
(household sugar), lactose (milk sugar), fructose (fruit sugar), glucose
(dextrose). (Abishak, 2009)
2.2
THEORY OF SWEETENESS
Sweetness is universally regarded as a
pleasurable experience except perhapsin excess. (Kurihara, 1992). Diversity of
chemical compounds as aldehyde, ketones, some amino acids (alanine, glycine and
serine) are mildly sweet. Plant species produce glycosides and sterioside from shrub stevia are sweet. Even
some inorganic compound are sweet, Berrylium chloride and Lead (II) acetate. (Guyton,
1991). A molecule must contain some structural motif called sapophore to
produce that taste. Molecules with multiple hydroxyl group and those with
Chlorine atoms are often sweet and are structurally similar compound.
In 1919 Oerly and Myer hypothesized that to be sweet, a compound must contain one each of the two classes of structural motif, a glyphore and auxogluc. In 1963 Robert Shellerberger and Terry Acree proposed the AH-B theory of sweetness, that to be sweet, a compound must contain a hydrogen bond ( AH ) and a Lewis base ( B ) separated by about 0.3 nanometers. (John, 2008 ) In 1972 Lemont Kier propose B-X theory that a compound to be sweet must have a third binding site ( labeled X ) that interact with a hydrophobic site on the sweetness receptor via London dispersion. Multipoint Attachment ( MPA ) theory by Jean M T and Claude N, in 1991, involves a total of eight interaction site between the sweetener and the sweetness receptor. This model has successfully directed effort aimed at finding highly potent sweeteners. ( Steveson, 2010 ) https://www.blogger.com/blogger.g?blogID=2695672613670435894#editor/target=post;postID=8053964627516870754