Translation guide
Refers to the proteins found in milk, such as casein and whey. In Japanese, this is typically expressed using the katakana loanword ミルクプロテイン or the more descriptive 乳タンパク質. The choice depends on context, with the loanword common in fitness and supplement contexts, and the native term used in nutritional science and food labeling.
The protein naturally present in milk or used as an ingredient.
Standard term used in nutritional science, food labeling, and formal contexts. Literally 'milk protein'.
乳タンパク質はアレルギーの原因になることがあります。
Milk protein can cause allergies.
Common in fitness, supplements, and casual contexts. Often used for protein powders derived from milk.
乳タンパク質 is the formal, scientific term used in food labeling and nutrition. ミルクプロテイン is a loanword common in fitness and supplement marketing. Use 乳タンパク質 in formal writing or when discussing allergies and nutrition; use ミルクプロテイン when talking about protein powders or shakes.
このプロテインバーにはミルクプロテインが使われています。
This protein bar uses milk protein.
Specifically refers to whey protein, a type of milk protein. Used in technical or nutritional contexts.
乳清タンパク質は消化が早いです。
Whey protein is quickly digested.
Refers to casein, the main protein in milk. Used in scientific, nutritional, and food industry contexts.
カゼインは牛乳の主なタンパク質です。
Casein is the main protein in cow's milk.