Marine Collagen Peptides are a source of histidine

19.12.31: health/diet/histidine/
Marine Collagen Peptides are a source of histidine:
. I'm getting most of my protein from sardines
and Zen Principle Marine Collagen Peptides
from the skins of wild caught cod fish.
(precious cysteine comes from raw egg yolk).
. I was noticing from the price of histidine
that they could make a lot more profits if they could
extract the histidine and sell that separately.
. my source claims on the package
that each 10g of powder contains 230mg histidine;
also, I found an amino acid researcher
who claims that fermentation --not extraction--
is the usual source of histidine.

. the nap.edu suggests a good dose of histidine
for a person weighing 154lb(70kg),
would be about 1g (from 56g protein).
. they assume an adult needs
0.80 g protein per kg body weight;
where a good quality protein has
amino acids in this dose per g of protein:
47mg phenylalanine or tyrosine;
55mg leucine,
51mg lysine,
27mg threonine
25mg isoleucine
25mg methionine or cysteine;
32mg valine,
18mg histidine,
7mg tryptophan.
. a breast-fed infant gets 28mg histidine/kg per day;
while an adult getting that much per body weight
would need 1.96g per day. [nat acad sci 1989]

. review the importance of histidine:
Michael Joseph 2019;
Carlos Tello, PhD 2019.

Nature Sport Science Ltd(Mike Ward):
In addition to the fermentation method,
the enzymatic reaction and extraction methods
are used for producing amino acids.
With the enzymatic reaction method,
an enzyme is used for converting a cheap amino acid
into a preferred amino acid.
With the extraction method, natural proteins
are degraded to various amino acids.
The fermentation method has the advantage of
mass production at low cost,
which was the great impetus for
expanding the amino acid market.

amino-vital`where amino acids come from:
Ajinomoto makes the amino acids through a patented
 fermentation process using microorganisms
and plant-derived glucose.
. animal-based amino acids
often extract the amino acids from
duck feathers, and animal fur;
or from human hair.

Purification of proteins is quite challenging.

Histidine is produced by Fermentation.
Amino acids made from extraction or enzymes
include Leucine, Cysteine, Alanine,
Tyrosine, Aspartic acid, and
L- Tryptophan (also by Fermentation).
. "chemical synthesis" is the source of
Methionine, Glycine, Alanine.
[Ikeda, M. 2003. Adv. Biochem. Eng. Biotech. 79:1-35:
Estimated global production of amino acids (1996)
(copied by Aspartame Toxicity Information Center
(Mark Gold)]