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Shopping – simple rule:
When you buy products low-processed without additions, you avoid eating such substances as glucose-fructose syrup, artificial flavours, carrageenan, stabilizers, thickeners, palm oil, preservatives.
Yeast extract is a very common flavour enhancer that doesn’t even appear to be a flavour enhancer. Yeast extract adds flavour to foods, like a spice. After all, yeast is food and it’s used for baking, I use it very common as well. As a matter of fact, the name yeast extract is so food-like it is confidently marked on the labels of many “natural” processed foods, some of which are sold in health food stores.
Ingredients such as yeast extract, or autolyzed yeast, and hydrolyzed yeast all contain a percentage of free glutamates or glutamic acids (MSG). Yeast extracts and fermented foods contain glutamic acid, an amino acid found in meat, cheese, fungi and vegetables, including mushrooms, broccoli, and tomatoes.
Yeast extract is used as food additives or flavourings, or as nutrients for bacterial culture media. It is often used to create savoury flavours and umami taste sensations, and can be found in a large variety of packaged food including frozen meals, crackers, snack foods, gravy, stock, bread, beer and more. Yeast extracts in liquid form can be dried to a light paste or a dry powder.
While yeast extract is very high in sodium, manufactures don’t add much of it to prepare foods — even in sandwich spreads. The small amounts that are added to food don’t alter their sodium content significantly. However, you may want to avoid yeast extract if you have a problem with blood pressure or another reason to limit sodium.
Yeast extract is very high in B vitamins, so it’s a cheap source of these vitamins. This is good news for pregnant women or people with malabsorption conditions that cause them to need more B vitamins.
Source: inter alia Wikipedia and InternetAdd to Favourites