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Hint: Sugars are the form of carbohydrates that are composed of monosaccharide or polysaccharides. They are a group of organic molecules that form various types of sugars. Sugars can be reduced and non reducing depending on their nature. Simple sugars are aldohexose and ketohexose as they have aldehyde and ketone groups respectively.
Complete answer:
Carbohydrates are the essential part of nutrients for our body. They are the source to provide sweetness in the form of various monosaccharide and polysaccharides. There are various examples of sugar like, glucose, fructose, sucrose, lactose etc.
Among them sucrose is taken as a main reference sugar whose sweetness is rated as 100, and above this level all are more sweet than sucrose. Sucrose is a disaccharide and a reducing sugar. Only one sugar has a higher rate than sucrose is fructose. Fructose is a non – reducing ketohexose that consists of 6 carbon chains with a keto group along with hydroxyl groups. The sweetness of fructose is rated as 140, that is the highest among all carbohydrates.
Hence, the sweetest of all sugar is fructose.
Additional information: sucrose is a reducing sugar that on hydrolysis is capable of giving two units that are fructose and glucose; therefore it is termed as disaccharide. The reaction is
$\begin{align}
& {{C}_{12}}{{H}_{22}}{{O}_{11}}+n{{H}_{2}}O\to {{C}_{6}}{{H}_{12}}{{O}_{6}}+{{C}_{6}}{{H}_{12}}{{O}_{6}} \\
& sucrose\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,glu\cos e\,\,\,\,\,\,\,\,\,fructose \\
\end{align}$ , glucose and fructose have the same formula and are non – reducing monosaccharide.
Note:
The ratings of sweetness of various sugars are sucrose – 100, fructose – 140, glucose – 70 to 80, galactose – 35, maltose – 30 to 50, lactose – 20. Lactose is the sugar present in milk. Almost all the carbohydrates that we take break down in our body to form glucose that is the source of energy to our body.
Complete answer:
Carbohydrates are the essential part of nutrients for our body. They are the source to provide sweetness in the form of various monosaccharide and polysaccharides. There are various examples of sugar like, glucose, fructose, sucrose, lactose etc.
Among them sucrose is taken as a main reference sugar whose sweetness is rated as 100, and above this level all are more sweet than sucrose. Sucrose is a disaccharide and a reducing sugar. Only one sugar has a higher rate than sucrose is fructose. Fructose is a non – reducing ketohexose that consists of 6 carbon chains with a keto group along with hydroxyl groups. The sweetness of fructose is rated as 140, that is the highest among all carbohydrates.
Hence, the sweetest of all sugar is fructose.
Additional information: sucrose is a reducing sugar that on hydrolysis is capable of giving two units that are fructose and glucose; therefore it is termed as disaccharide. The reaction is
$\begin{align}
& {{C}_{12}}{{H}_{22}}{{O}_{11}}+n{{H}_{2}}O\to {{C}_{6}}{{H}_{12}}{{O}_{6}}+{{C}_{6}}{{H}_{12}}{{O}_{6}} \\
& sucrose\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,glu\cos e\,\,\,\,\,\,\,\,\,fructose \\
\end{align}$ , glucose and fructose have the same formula and are non – reducing monosaccharide.
Note:
The ratings of sweetness of various sugars are sucrose – 100, fructose – 140, glucose – 70 to 80, galactose – 35, maltose – 30 to 50, lactose – 20. Lactose is the sugar present in milk. Almost all the carbohydrates that we take break down in our body to form glucose that is the source of energy to our body.
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