00:01
Hello students.
00:02
In the question mentioned to us, we have multiple questions.
00:05
This is the first one.
00:06
Let us consider the structure of alpha -d -maltoes.
00:11
We are going to write that.
00:13
The keynote here is, in the given structure, we are going to mention the disaccharide maltose that is made up of two glucose units.
00:23
Let us consider the solution.
00:25
Maltose is formed by condensation of two alpha -d glucose units that are linked by alpha -14 glycosidic bond which results in the formation of the disaccharide maltose.
00:38
Now these are the alpha -d -glucopyrinoes units, two alpha -d -glucopyrinose units that are linked by alpha -14 glycosidic bonds.
00:50
Here, h -o -h, and here the second carbon also we have h -o -h, at the third carbon, o -h -h, and at the 5th carbon also we have hoh and at the 6th carbon we have ch2 o h h.
01:09
Next coming on here, this is the another alpha -d glucopyrinoes unit where we have hoh -o -h -h -h and h -o -h -c -h -2 -o -h -h -h.
01:29
These two units are linked by means of two glucoporanos.
01:35
Alpha d.
01:35
Glucopyrino's units are linked by means of alpha -1 -4 glycosidic ones or linkage.
01:53
That is, this is the structure of alpha -d maltose, a disaccharide.
02:05
Let's move to the second one.
02:07
Here the question.
02:11
So this is, so the answer for the first question is, this is the structure of alpha -d -maltose.
02:24
Now moving to the second question here.
02:37
Question second on hydrolysis of alpha -d maltoes, what we are going to get? the keynote here is, in the form of an equation, we are going to represent the hydrolysis of alpha -d -maltoes.
03:13
Now let us make the hydrolysis.
03:21
This is the structure of alpha -d -maltoes.
03:28
This is hydrolyzed to form in presence of water molecule h -o -h minus to form 2 alpha -d glucose units, h -o -h, c -h2 -o -h.
04:04
So this is 1 alpha -d glucose unit.
04:10
At the first carbon atom we have hoh, at the second also hoh at the third o -h -h -h, 4th -h -h -o -h.
04:17
And whereas at sixth, fifth we have h and 60 is c h to o h.
04:25
Now one more let us make the alpha d glucose pyranos.
04:31
This is also known as alpha d glucopyrinoes or alpha d glucose.
04:40
H .o .h at first carbon.
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Second carbon also h -o -h.
04:52
Third carbon o -h h, 4th carbon h -o -h.
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5th carbon c .h2 -o -h.
05:11
So first carbon h -o -h, second carbon h -o -h, third carbon o -h, 4th carbon h -o -h, 5th carbon c -h, 6th carbon, c -h2 -o -h.
05:23
So here we have the second glucose unit, alpha -d glucose, which is also known as alpha -d -glucopyrinose.
05:34
On hydrolysis of maltose, we are going to get 2 alpha -d glucose.
05:47
So the solution for the second question here is, on hydrolysis of alpha -d maltose, we are going to get alpha -d glucopyrinose.
06:12
Let's move to the third question here.
06:14
Formation of alpha d lactose the keynote here is we are going to mention the structure that uses the information related to the synthesis of lactose alpha d lactose lactose is formed by condensation of beta d galactose and alpha d glucose a molecule of water is last due to condensation reaction between beta d galactose and alpha d glucose.
07:21
The reaction occurs between, let us number the carbon atoms in both the galactose and glucose, first, second, third, fourth and fifth and sixth in case of beta d galactose and one, two, three, four, five, six in case of alpha d glucose, the reaction occurs between first carbon of beta d galactose.
07:47
And 4th carbon of alpha d glucose...