Based on the Truth In Labeling web site, I discovered that MSG was in many sources.
Always Contain MSG:
The following ingredients always contain MSG.
Glutamate Glutamic acid
(E 620) (E 620)
Monosodium glutamate Monopotassium glutamate
(E 621) (E 622)
Calcium glutamate Monoammonium glutamate
(E 623) (E 624)
Magnesium glutamate
(E 625)
Ajinomoto
Calcium caseinate
Natrium glutamate (natrium is Latin/German for sodium)
Gelatin
Sodium caseinate
Textured protein
Vetsin (Vitsin)
Anything hydrolyzed
Autolyzed yeast
Yeast extract
Yeast nutrient
Yeast food
Sometimes Contain MSG:
The following ingredients sometimes contain MSG.
Bouillon and Broth Barley malt
Carrageenan Citric acid
Malt extract Malt flavoring
Maltodextrin Natural beef flavoring
Natural chicken flavoring Natural pork flavoring
Pectin Protease
Soy protein Soy protein concentrate
Soy protein isolate Soy sauce
Soy sauce extract Stock
Ultra–pasteurized Whey protein
Whey protein concentrate Whey protein isolate
Anything enzyme modified
Anything fermented
Anything protein fortified
Flavors(s) and Flavoring(s)
Natural flavor(s) and flavoring(s)
Seasonings (the word seasonings
)
Signs MSG May Be Present:
The following ingredients work synergistically with MSG to enhance flavor. Therefore, if the following ingredients are present, then chances are MSG is too.
Disodium 5'–guanylate
(E 627)
Disodium 5'–inosinate
(E 631)
Disodium 5'–ribonucleotides
(E 635)