Amino acid content of fine, semifine and rough wools
2007
Rajchev, S. | Pamukova, D. | Stankov, I. | Slavov, R.
A total of 54 samples of sheep wool, divided as followed: 19 fine wool samples (5 from the Ascanian breed, 5 – from the Caucasian breed, 5 from the Northeast Bulgarian Finewool breed and 4 from the Merinofleisch breed); 22 samples of semifine wool (5 from the Ile-de-France breed, 5 from the Tsigay breed, 5 from the Dorset Horn breed, 4 from the North-Caucasian breed and 3 from the Suffolk breed) as well as 13 samples of rough wool (5 from the Karnobat breed, 5 from the Pleven Blackhead breed and 3 from the Karakachan breed). The content of 17 amino acids (lysine, histidine, arginine, aspartic acid, threonine, serine, glutamic acid, proline, alanine, cysteine, valine, methionine, isoleucine, leucine, tyrosine and phenylalanine) in 100 g washed wool was assayed. The studies showed that in fine, semifine and rough wool, the highest amino acid content was that of cysteine, glutamic acid, proline and arginine, whereas the lowest – that of methionine and histidine. The fine wool exhibited the highest levels of the sulfur-containing amino acids cysteine and methionine. There were no statistically significant differences between the content of studied amino acids in the fine and semifine wools. There were however differences between the amino acid composition of rough and fine wools from one part, as well as between the rough and semifine wools, on the other.
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