serene said:On Sun, 29 Jan 2006 03:00:53 +0000 (UTC), [email hidden]
Quoted message said:Quoted message said:What, exactly, are black soybeans? Specifically do they provide
complete protein, in the same fashion as ordinary soybeans, or
are they more like other beans in being incomplete?
Quoted message said:The whole "complete protein" thing is an outmoded concept, which even
Francis Moore Lappe says in her newer books. It's just not necessary
to get "complete" protein in every meal, or to combine proteins to
make sure you have all your amino acids balanced at all times.
Right. "At all times", sure. But the concept can't be a
complete myth -- you would still contract pellagra if your diet
is lysine-deficient. I consider it good to balance protein over
the course of a day, and within a meal is my usual goal. To me
it stands to reason that if your protein intake is incomplete
over the timeframe in which liver metabolism occurs, some of
those amino acits will just be metabolized as energy and will not be
used for synthesis, i.e. you might as well have consumed carbs.
Lappe had serious mistakes in her protein-balancing information
in early editions of "Diet for a Small Planet", which she has
since corrected or maybe overcorrected. The information I trust
comes from Davis and Melina ("Becoming Vegan"😉 and states that for a
gram of protein to be complete it will contain the following minimums:
Tryptophan 11 mg
Histidine 19 mg
Methionine 25 mg (Cysteine can replace some of this)
Isoleucine 28 mg
Threonine 34 mg
Valine 35 mg
Lysine 58 mg
Phenylalanine 63 mg (Tyrosine can replace some of this)
Leucine 66 mg
Since this only adds up to 340 mg, there's quite a bit of margin --
hence soy protein can be "complete" even though egg protein is higher
quality because it has even more of the essenitial amion acids
in the desirable ratio.
(I wish I had the exact information on how much cysteine and
tyrosine you can substitute -- haven't found that yet.)
Quoted message said:However, here's what Eden Foods has to say about them:
"Black Soybeans (Glycine max) have all of the nutrition of yellow
soybeans including the isoflavone nutrients Genistein, Daidzein, and
Glycetein. Soybeans are unique among beans because they provide
naturally occurring healthy unsaturated vegetable fat. They also
provide a 'complete' protein with a balance of essential amino acids.
EDEN Black Soybeans are heart healthy, rich in dietary fiber and soy
protein. They are a good source of vitamin A, iron, phosphorus,
magnesium and zinc, and provide potassium, calcium and important B
vitamins (B1, B2, B3, B9). The only low carb bean."
Thanks.
We just realized that the product at Grocery Outlet, Shariann's
Black Soybeans in cans, has inconsistent nutrition labeling --
the numbers don't add up -- which is probably why it's at
Grocery Outlet.
Gonna go buy some more cans of it now. It went pretty well
in a hot/sour soup that included broad bean paste and brown
rice vinegar and mostly mushroom broth.
Steve