Protein Quality Calculator

Protein Quality Calculator

How much protein do you need to eat in order to build muscle? One gram of protein per pound of bodyweight per day is a good recommendation for athletes so a 160 pound bodybuilder would eat 160g of protein a day, but are all grams of protein created equal? Does it matter if you get your 160 grams of protein from chicken breast or nuts? It makes a HUGE difference! As explained below, a gram of protein from chicken breast is much better at building muscle than a gram of protein from nuts because of protein density, amino acid profile and digestibility. For over 5000 foods, this calculator tells you how much you need to eat to get the protein you need to build muscle.

1:Select the food group: Dairy and Egg Products  Poultry
Lunch Meats Breakfast Cereals

Fruits Vegetables

Pork Products  Nuts and Seeds

Beef Fish and Shellfish

Legumes  Lamb, veal and game 

Grains 
 
2:Select the food:

 
3:Select usable protein in meal
(use calorie calculator if unsure):

 
 
4: Calculate how much you need:

 

This software is still under development, please submit bugs and suggestions here!


Protein Analysis of Mixed Nuts, Dry Rstd, W/pnuts, Wo/salt

To get 10 grams of usable protein for muscle building you can either eat 51 calories of chicken breast or 1682 calories of Mixed Nuts, Dry Rstd, W/pnuts, Wo/salt

Lets look at why this is the case:

  1. How protein dense is the food? Mixed Nuts, Dry Rstd, W/pnuts, Wo/salt have a protein density of 11.6% which means that 11.6% of the calories are from protein. Skinless grilled chicken breast has a protein density of about 80%, things like egg whites and isolated whey products have protein densities over 90%. With any protein density less than 60%, it becomes a challenge to get enough protein without going over your daily caloric budget and getting fat. If your primary protein source has a protein density of less than 50% then you are going to have to do *significant* amounts of daily cardio to burn off the extra calories if you dont want to increase bodyfat.
  2. What is the amino acid profile of the food? Muscle cant be built unless *all* the essential amino acids are present at the instant they are needed. If doesnt matter how many essential amino acids are in your stomach, if you run out of just one then all protein synthesis stops. This is why amino acid profiles are so important, to make sure that you get the right balance of amino acids so that a maximum of muscle can be built with a minimum of calories. When you compare the amino acid profile of Mixed Nuts, Dry Rstd, W/pnuts, Wo/salt to chicken breast in the below chart, you will see that it is most lacking in lysine, in fact, Mixed Nuts, Dry Rstd, W/pnuts, Wo/salt only has 41% as much of lysine as chicken breast does. Because of this, you need to eat 2.4 times as much protein to get the same muscle building properties as you get from chicken.
  3. How digestible is the food? This is where the science is the weakest. There are a couple ways people have attempted to factor this in – with BV (Biological Value) and with the Protein Digestibility Corrected Amino Acid Score (PDCAAS). Something like whey protein isolate is nearly 100% digestible whereas the protein in some grains is only 50% usable. Mixed Nuts, Dry Rstd, W/pnuts, Wo/salt has a digestability factor of 0.5 where 1.0 is 100% digestable. Typically when foods are high in fiber, the body has a harder time extracting usable protein from the food. Because not all the protein in this food is digestable, you need to eat 2 times more than you would for a fully digestable food like milk.
  4. In Summary Because of the digestability and the lack of lysine, you need to eat get 4.9 times as many grams of protein in Mixed Nuts, Dry Rstd, W/pnuts, Wo/salt to get 10 grams of high quality, usable protein.
Mixed Nuts, Dry Rstd, W/pnuts, Wo/salt         BBQ Chicken Breast
Calories (g) 1682 51
Protein (g) 49 10
Fat (g) 146 1
Carbs (g) 72 0

 

 

Peanut-Amino-Acid-Profile

The best complimentary protein source for Mixed Nuts, Dry Rstd, W/pnuts, Wo/salt

A word is in order about how I come up with this list because the way to calculate the optimal complimentary food is not obvious. First, I look at which one of the essential amino acids the food (Mixed Nuts, Dry Rstd, W/pnuts, Wo/salt in this case) is lowest in when compared to a high quality protein source like chicken breast. In the case of Mixed Nuts, Dry Rstd, W/pnuts, Wo/salt, it is lowest in lysine. Then it gets a bit tricky. If I were just to scour the database for the food that highest amount of lysine per calorie, I would be recommending “add a scoop of protein powder to that” as the best complimentary food for *everything*. Yes, the best complimentary protein to a bucket of sawdust is a scoop of protein powder and actually, you could skip the sawdust :) The point of looking for complimentary foods is to look for raw foods, not processed ones. There are two things that one must balance when looking for the optimal complimentary food: first, how much lysine you get per calorie and second, you want something that is high in lysine relative to the other essential amino adids. The algorithm I wrote looks thru my database of over 5000 foods, optimizes the two requirements, and presents you with a list of fourty foods to choose from: twenty from plant sources and twenty from animal sources.

There is disagreement in the nutritional community about what constitutes “essential” amino acids. What is agreed is that histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine are essential but then the disagreements seem to start. Technically cystenine and tryosine are non essential but many put them in the “conditionally essential” or “essential” category. Also arginine, glycine, glutamine, histidine, proline, and serine are also considered “conditionally essential”. For the purposes of this software, I had to make a choice what “essential” means so that I can optimize the complimentary food so I chose the nine definitely essential plus cystenine and tryosine.

Best complimentary plant protein

FOOD NAME

lysine
cauliflower,raw

0.113021
mushrooms,brown,italian,or crimini,raw

0.1008
parsley,freeze-dried

0.099521
lambs quarters,ckd,bld,drnd,w/salt

0.084375
lambsquarters,ckd,bld,drnd,wo/salt

0.084375
lambsquarters,raw

0.084286
soybeans,mature seeds,raw

0.074157
peas,split,mature seeds,ckd,bld,wo/salt

0.072182
peas,split,mature seeds,ckd,bld,w/salt

0.072182
peas,split,mature seeds,raw

0.072179
winged bns,mature seeds,raw

0.07204
peas,edible-podded,frz,ckd,bld,drnd,wo/salt

0.072
peas,edible-podded,frz,ckd,bld,drnd,w/salt

0.072
peas,edible-podded,bld,drnd,wo/ salt

0.071865
peas,edible-podded,ckd,bld,drnd,w/salt

0.071865
mori-nu,tofu,silken,soft

0.071042
beans,kidney,all types,mature seeds,ckd,bld,wo/salt

0.070012
beans,kidney,red,mature seeds,cnd,drnd sol,rinsed in tap h2o

0.069951
soybeans,mature seeds,sprouted,ckd,stir-fried,w/salt

0.069924
lentils,mature seeds,ckd,bld,wo/salt

0.069845

Best complimentary animal protein

FOOD NAME

lysine
cheese,parmesan,dry grated,red fat

0.12295
cheese,ricotta,part skim milk

0.118788
beef,loin,top sirloin cap steak,bnless,ln,1/8″ fat,sel,raw

0.115392
beef,rib eye steak/roast,bone-in,lip-on,ln,1/8″ fat,sel,raw

0.115381
beef,top loin petite rst,bnless,ln,1/8″ fat,sel,ckd,rstd

0.115379
beef,rib,back ribs,bone-in,ln,0″ fat,sel,raw

0.115373
beef,plate steak,bnless,inside skirt,ln,0″ fat,sel,ckd,grild

0.115372
beef,top loin petite roast/filet,bnless,ln,1/8″ fat,sel,raw

0.115371
beef,ribeye petite rst,bnless,ln,0″ fat,sel,ckd,rstd

0.115368
beef,loin,top sirloin filet,bnless,ln,0″ fat,sel,ckd,grilled

0.115367
beef,loin,top sirloin petite rst,bnls,ln,0″ fat,sel,ckd,rstd

0.115366
beef,plate steak,bnless,inside skirt,ln,0″ fat,sel,raw

0.115363
beef,ribeye cap steak,bnless,ln,0″ fat,sel,raw

0.115362
beef,plate steak,bnless,outside skirt,ln,0″ fat,sel,raw

0.115361
beef,rib eye steak,bnless,lip off,ln,0″ fat,sel,raw

0.115361
beef,plate steak,bnless,outside skirt,ln,0″ fat,sel,ckd,grld

0.115358
beef,loin,top sirlon petite rst/filet,bnls,ln,0″ fat,sel,raw

0.115358
beef,rib eye steak,bnless,lip-on,ln,1/8″ fat,sel,ckd,grilled

0.115355
beef,rib eye rst,bnless,lip-on,ln,1/8″ fat,sel,ckd,rstd

0.115355
beef,rib eye rst,bone-in,lip-on,ln,1/8″ fat,sel,ckd,rstd

0.115353

Amino Acids Per Gram Protein

Amino Acid

Mixed Nuts, Dry Rstd, W/pnuts, Wo/salt

BBQ Chicken Breast
Tryptophan

0.01526

0.01077
Threonine

0.034509

0.024322
Isoleucine

0.043006

0.04383
Leucine

0.079249

0.084023
Lysine

0.041156

0.1
Methionine

0.013179

0.029708
Cystine

0.01659

0.010699
Phenylalanine

0.055087

0.041084
Tyrosine

0.039075

0.034058
Valine

0.053988

0.045613
Arginine

0.129595

0.063873
Histidine

0.027746

0.036626
Alanine

0.04659

0.049501
Aspartic Acid

0.118844

0.058987
Glutamic Acid

0.255665

0.112981
Glycine

0.061503

0.042332
Proline

0.050578

0.037447
Serline

0.053006

0.033131