Olika protein som kompletterar varandra

[Rockhard]

Olika protein har ju olika "biologiskt värde vad jag förstått", fullvärt protein har 100 på skalan? Men en måltid kan ju ha över 100 vad jag förstått för att protein kompletterar varandra. Så då undrar jag vilka olika som kompletterar bra osv?

[King Grub]

http://www.unu.edu/Unupress/unupbooks/80129e/80129E06.htm#Assays%20Utilizing%20the%20Amino%20Ac id%20Profile%20Alone%20or%20in%20Combination%20wit h%20Protein%20Digestibility

[Sverker]

http://www.unu.edu/Unupress/unupbooks/80129e/80129E06.htm#Assays%20Utilizing%20the%20Amino%20Ac id%20Profile%20Alone%20or%20in%20Combination%20wit h%20Protein%20Digestibility

:thumbup:

[Fagen]

Stjäl tråden...

1. Är alla EAA lika viktiga/nödvändiga för proteinsyntesen i skelettmuskulaturen?
2. Fyller en EAA, tex leusin (stavning?), samma funktion överallt i kroppen eller har den olika egenskaper/funktion i olika kemiska proceser?

[King Grub]

Det vet man inte. Man vet inte i vilka fördelningar dom essentiella aminosyrorna stimulerar proteinsyntesen bäst, eller om det är några enstaka som är ansvariga. Leucin är en het kandidat, liksom fenylalanin.

"The composition of the mixture of EAA we have tested in this and previous studies was originally based on the composition of muscle protein, with the notion of increasing the availability of each EAA in proportion to its requirement for synthesis of muscle protein. The results of the current study show that isoleucine and leucine increased more than the others in the blood, meaning that the goal of causing proportional increases in all EAA was not fully achieved. Different changes in concentrations of blood amino acids after ingestion of the drink may be caused by different clearance rates of individual amino acids, thereby resulting in rates of uptake that do not directly correspond to the composition of the ingested mixture. Furthermore, it is possible that the effect is largely, or even entirely, mediated by leucine alone. Therefore, it is possible that adjustments in the composition of the drink could further improve the response of net muscle balance."

Am J Physiol Endocrinol Metab 283: E648-E657, 2002;

"Determination of the response of muscle protein balance to protein ingestion is based on the uptake of individual amino acids. It is assumed that amino acid uptake represents net muscle protein synthesis and the potential for muscle protein accretion. The discrepancy in the response of leucine and phenylalanine uptake to the two proteins indicates that reliance on one amino acid to represent muscle protein balance may not be advisable. These results suggest that in an acutely changing situation, such as what occurs after bolus ingestion of proteins, the metabolism of amino acids may differ. In this case, the uptake of phenylalanine can be considered indicative of the true response of muscle protein balance. Phenylalanine is not oxidized in the muscle, so the only metabolic fate for phenylalanine taken up by the muscle is for protein synthesis. The muscle intracellular pool of phenylalanine at the end of sampling was the same as at baseline, and net phenylalanine balance had returned to baseline levels by the end of sampling, indicating that sampling accounted for the entire response to the ingested protein. Thus, it can be assumed that all the phenylalanine taken up by the muscle was utilized for muscle protein synthesis. Leucine taken up across the leg may be utilized for muscle protein synthesis, as well as oxidation by the muscle. Thus, the uptake values for leucine do not truly represent the potential for muscle protein accretion."

Medicine & Science in Sports & Exercise: Volume 36(12) December 2004 pp 2073-2081

[Fagen]

Tackar för svaret.