4.1.3.1 Carbohydrates
In 100 g of roasted peanuts, there are 21.51 g of carbohydrates, whereas in raw
peanuts there is 25 g.
4.1.3.2 Proteins
Peanuts are an excellent source of proteins, as 100 g of peanuts contain 25 g of
protein. Amino acid composition of peanut protein is similar to that of beef protein.
The ratios of histidine and arginine in A. hypogea are similar to the protein content of
an egg. Tryptophan, cysteine, and methionine are found in the lowest quantity out of
the 18 amino acids (Akhtar et al. 2014). Out of a total 25 g protein content, the
various ratios of amino acids are given in Table 4.2.
Table 4.2 Amino acid composition and content of
A. hypogea
Protein content of peanuts
Total protein content
25 g
Tryptophan
0.2445 g
Threonine
0.859 g
Isoleucine
0.882 g
Leucine
1.627 g
Lysine
0.901 g
Methionine
0.308 g
Cysteine
0.322 g
Phenylalanine
1.300 g
Tyrosine
1.020 g
Valine
1.052 g
Arginine
3.001 g
Histidine
0.634 g
Alanine
0.997 g
Aspartic acid
3.060 g
Glutamic acid
5.243 g
Glycine
1.512 g
Proline
1.107 g
Serine
1.236 g
The table shows the variety and relative amount of amino acids
present in 100 g of peanut. A. hypogea contains 18 essential amino
acids out of a 20. Amino acids that are abundant in peanuts include
(in descending order) glutamic acid, arginine, and aspartic acid
(Conde Nast version SR-21 2014)
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F. Syed et al.