By the whey

Your information source on whey proteinů

source of whey

 
 
 
     
 
 
     
 
 
     
 
 
     
 
 
     
     
     
   
     
     
 

Bookmark and share this page:

 
 

 
   

Acid Whey and Sweet Whey

 
   

Depending on the type of cheese made, there are different types of whey: sweet whey & and acid whey.

Sweet whey results from cottage cheese production.
Acid whey results of rennet cheese (hard cheese) production.

The protein composition of sweet and acid whey are very similar, but they do have consistent differences. (For those who are interested, more details can be found in the sections describing the nutrients and amino acid breakdown of whey.)

 
   

Nutritional Facts

 
   

The macronutrient composition of sweet and acid whey are very similar.

Below is a chart showing the difference in composition between 100 grams of dried sweet whey and 100 grams dried acid whey. As you can see the amino acid score for acid whey is slight better. (See the section below for detailed amino acid composition.)

    Sweet Acid
  Carbohydrate (g) 74.5 73.4
  Protein (g) 12.9 11.7
  Fat (g) 1.1 0.5
  Amino Acid Score 102 109

Below is a chart comparing the vitamins and minerals found in 100 grams dried sweet, versus acid, whey. It serves also as an indication of the amount of vitamins and minerals found generally in dried whey, and the percentage of the recommended Daily Value (DV) the amount represents.

    Sweet Acid
  Vitamins amt (DV) amt (DV)
  Vitamin A 30 IU (1%) 59 IU (1%)
  Retinol

8 mcg

17 mcg

  Retinol Activity Equivalent 8 mcg 17 mcg
  Alpha Carotene 0 mcg 0 mcg
  Beta Carotene 2 mcg 1 mcg
  Beta Cryptoxanthin 0 mcg 0 mcg
  Vitamin C 1.5 mg (2%) 0.9 mg (1%)
  Vitamin E
(Alpha Tocopherol)
0 mg 0 mg
  Vitamin K 0.1 mcg (0%) 0.0 mcg (0%)
  Thiamin 0.5 mg (35%) 0.6 mg (41%)
  Riboflavin 2.2 mg (130%) 2.1 mg (121%)
  Niacin 1.3 mg (6%) 1.2 mg (6%)
  Vitamin B6 0.6 mg (30%) 0.6 mg (30%)
  Folate (Food Folate) 12 mcg (3%) 33 mcg (8%)
  Vitamin B12 2.4 mcg (39%) 2.5 mcg (42%)
  Pantothenic Acid 5.6 mg (56%) 5.6 mg (56%)
  Choline 225 mg 225 mg
  Minerals amt (DV) amt (DV)
  Calcium 796 mg (80%) 2054mg (205%)
  Iron 0.9 mg (5%) 1.2 mg (7%)
  Magnesium 176 mg (44%) 199 mg (50%)
  Phosphorus 932 mg (93%) 1349 mg (135%)
  Potassium 2080 mg (59%) 2289 mg (65%)
  Sodium 1079 mg (45%) 968 mg (40%)
  Zinc 2.0 mg (13%) 6.3 mg (42%)
  Copper 0.1 mg (3%) 0.1 mg (3%)
  Manganese 0.0 mg (0%) 0.0 mg (0%)
  Selenium 27.3 mcg (39%) 27.2 mg (39%)
 
 
 
 
 
   

Amino Acids in Whey

 
   

As mentioned above, whey has the highest protein quality rating among protein sources. Whey protein also contains a large quantity (about 26% of amino acids) of branched-chain amino acids (BCAA's). Unlike the other amino acids, BCAA's (leucine, isoleucine and valine) do not need to metabolized by the liver first, and supply energy quickly to muscles during exersice.

For those that are interested, below is table comparing the specific amino acid composition of 100 grams dried sweet whey and 100 grams dried acid whey.

    Sweet Acid
  Protein 12.9 g 11.7 g
  Tryptophan 205 mg 24 mg
  Threonine 817 mg 590 mg
  Isoleucine 719 mg 581 mg
  Leucine 1186 mg 1116 mg
  Methionine 241 mg 221 mg
  Cystine 253 mg 211 mg
  Phenylalanine 386 mg 407 mg
  Tyrosine 300 mg 363 mg
  Valine 579 mg 697 mg
  Arginine 327 mg 375 mg
  Histidine 230 mg 237 mg
  Alanine 506 mg 598 mg
  Aspartic acid 1149 mg 1269 mg
  Glutamic acid 2096 mg 2248 mg
  Glycine 211 mg 280 mg
  Proline 699 mg 786 mg
  Serine 622 mg 541 mg
 
 
 
 

Whey-based amino acid supplement

 
 
 

Back: Processing Methods