Amino Acid Composition and Protein Content of Mature Human Milk from Nine Countries

The objective of this paper was to study the amino acid composition of donkey milk inhabiting the Kegety gorge of the Chui region. As well as human milk, donkey and mare’s milk is albumin; the amount of casein is 35-45%, while cow’s milk is casein milk with casein content over 75%. The peculiarity of albumin milk is a higher biological and nutritional value, due to better amino acid balance, high sugar content and the ability to form small, delicate flakes when souring. In terms of its properties, albumin milk is closest to human milk and is the best substitute for it. The obtained results showed that the quantitative content of 7 essential amino acids out of 8, such as lysine, phenylalanine, leucine, isoleucine, methionine, valine, threonine is relatively high compared to other amino acids. Despite the absence of tryptophan in donkey milk, the percentage of 8 essential amino acids in donkey milk protein exceeds that in mare and cow’s milk.

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Proteins in the Enamel Fluid of Immature Porcine Teeth

Journal of Dental Research ◽

10.1177/00220345870660120501 ◽

1987 ◽

Vol 66 (12) ◽

pp. 1721-1726 ◽

Cited By ~ 31

Author(s):

T. Aoba ◽

T. Tanabe ◽

E.C. Moreno

Keyword(s):

Amino Acid ◽

Amino Acid Composition ◽

Protein Content ◽

Acid Composition ◽

Permanent Teeth ◽

Major Protein ◽

Protein Species ◽

Terminal Sequence ◽

Molecular Weights ◽

Sds Electrophoresis

The fluid was separated from the immature soft enamel of porcine permanent teeth in the secretory stage according to procedures reported previously (Aoba and Moreno, 1987). The protein content of the fluid was about 2.8% w/v; its amino-acid composition was characterized by high contents of Pro, Glx, Leu, and His, showing composition similar to that of the 20 kilo-dalton (kd) amelogenin or its C-terminal segments. The two major protein species in the fluid had apparent molecular weights of 13 kd and 11 kd, as determined by SDS electrophoresis; the N-terminal residue of the former was Leu, while that of the latter was Ala. The C-terminal sequence of both of them was -Met-Phe-Ser. By comparison with the published sequence of 20-kd porcine amelogenin, it is concluded that the main fluid constituents were derived by cleavages of N-terminal segments from the 20-kd amelogenin.

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Protein content and amino acid composition of eggs and endotrophic larvae from wild and captive fed sea urchinParacentrotus lividus(Echinodermata: Echinoidea)

Aquaculture Research ◽

10.1111/are.12475 ◽

2014 ◽

Vol 47 (1) ◽

pp. 114-127 ◽

Cited By ~ 1

Author(s):

João Gago ◽

Tiago Martins ◽

Orlando J Luís

Keyword(s):

Amino Acid ◽

Amino Acid Composition ◽

Protein Content ◽

Acid Composition

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INFLUENCE OF DRYING METHODS ON PROTEIN CONTENT AND AMINO ACID COMPOSITION OF THREE FORAGE LEGUMES

Canadian Journal of Plant Science ◽

10.4141/cjps79-110 ◽

1979 ◽

Vol 59 (3) ◽

pp. 707-712 ◽

Cited By ~ 2

Author(s):

M. S. KALDY ◽

M. R. HANNA ◽

S. SMOLIAK

Keyword(s):

Amino Acid ◽

Amino Acid Composition ◽

Protein Content ◽

Acid Composition ◽

Dry Matter ◽

Protein Quality ◽

Microwave Drying ◽

Drying Methods ◽

Dry Matter Content ◽

Forced Draft

Forage samples of alfalfa (Medicago sativa L. ’Beaver’), sainfoin (Onobrychis viciaefolia Scop. ’Melrose’), and cicer milkvetch (Astragalus cicer L. ’Oxley’) were dried either in a forced-draft forage dryer, drying oven, or a microwave oven. The dry matter content, protein content, and amino acid composition were determined but the air-drying methods resulted in significant losses of dry matter compared with microwave drying, suggesting that the latter method is preferable for dry-matter determinations. Interactions between species and drying method were significant for some of the amino acid contents, but not for the limiting amino acids — methionine, isoleucine, and valine. Since protein scores, reflecting protein quality, and protein content of the three legumes were not affected by drying methods, any one of the drying methods would be satisfactory. However, large numbers of forage samples can be handled most conveniently in a forced-draft dryer.

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