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Information about Yeast Extract

Yeast extract is the common name for various forms of processed yeast products that are used as food additives or flavourings. They are often used in the same way that monosodium glutamate (MSG) is used, and, like MSG, often contain free glutamic acids.

Autolyzed yeast

Autolyzed yeast or autolyzed yeast extract consists of concentrations of yeast cells that are allowed to die and break up, so that the yeasts' digestive enzymes break their proteins down into simpler compounds.

Yeast autolysates are used in Vegemite (Australia), Marmite, Promite, Oxo (South Africa, United Kingdom, and Republic of Ireland), and Cenovis (Switzerland). Bovril (The United Kingdom and Republic of Ireland) switched from beef extract to yeast extract for 2005 and most of 2006, but later switched back. Autolyzed yeast extract is also the primary source of monosodium glutamate for the food industry.

Hydrolyzed yeast

Hydrolyzed yeast or hydrolyzed yeast extract is another widely used food additive, used for flavouring purposes.

Manufacture

The general method for making yeast extract for food products such as Vegemite and Marmite on a commercial scale is to add salt to a suspension of yeast making the solution hypertonic, which leads to the cells shrivelling up; this triggers autolysis, in which the yeast self-destructs. The dying yeast cells are then heated to complete their breakdown, after which the husks (yeast with thick cell walls which wouldn't do the texture much good) are separated.
Ascomycota (sac fungi)
  • Saccharomycotina (true yeasts)
  • Taphrinomycotina
  • Schizosaccharomycetes (fission yeasts)
Basidiomycota (club fungi)
  • Urediniomycetes

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Monosodium glutamate, sodium glutamate, flavour enhancer 621, EU food additive code: E621, HS code: 29224220 (IUPAC name 2-aminopentanedioic acid. Also known as 2-aminoglutaric acid), commonly known as MSG, Ajinomoto, Vetsin, or Accent
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Glutamic acid or glutamate (abbreviated as Glu or E; Glx or Z represents either glutamic acid or glutamine), is the protonated form of glutamate (the anion). Glutamate is one of the 20 proteinogenic amino acids.
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Autolysis is a process by which a biological cell self-destructs. It is uncommon in adult organisms and usually occurs in injured cells or dying tissue. It occurs when a lysosome allows the digestive enzymes out of its membranes. The cell then, in effect, digests itself.
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Ascomycota (sac fungi)
  • Saccharomycotina (true yeasts)
  • Taphrinomycotina
  • Schizosaccharomycetes (fission yeasts)
Basidiomycota (club fungi)
  • Urediniomycetes

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Digestion is the process of metabolism whereby a biological entity processes a substance in order to chemically and mechanically convert the substance for the body to use.

Overview

Digestion occurs at the multicellular, cellular, and sub-cellular levels, usually in animals.
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Proteins are large organic compounds made of amino acids arranged in a linear chain and joined together by peptide bonds between the carboxyl and amino groups of adjacent amino acid residues.
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Vegemite (IPA: /'vedʒɪˌmɑɪt/) is a dark brown, savoury food paste made from yeast extract, used mainly as a spread on sandwiches, toast and cracker biscuits, as well as a filling of pastries like
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Anthem
Advance Australia Fair [1]


Capital Canberra

Largest city Sydney
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Marmite /ˈmɑːmaɪt/ is the name given to two similar food spreads, one produced in the United Kingdom and the other in New Zealand. Marmite is made from yeast extract, a by-product of beer brewing.
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Promite (IPA pronunciation: ['promaɪt]) is the registered brand name for a dark brown, salty food paste mainly used as a spread on sandwiches and toast similar to the better known Vegemite and Marmite.
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Oxo is a brand of various food products, consisting of stock cubes, herbs and spices, dried gravy, and yeast extract. In the United Kingdom, Oxo products are manufactured by Premier Foods. In South Africa, the Oxo brand is owned and manufactured by Mars, Incorporated.
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Motto
"Dieu et mon droit" [2]   (French)
"God and my right"
Anthem
"God Save the Queen" [3]
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Anthem
Amhrán na bhFiann  
The Soldier's Song


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Cenovis is a product based on yeast extract similar to Vegemite and Marmite, rich in vitamin B1. In the form of a dark brown food paste, it is used to flavor soups, sausages or salads. The most popular way to consume Cenovis is however to spread it on a slice of buttered bread.
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Motto
Unus pro omnibus, omnes pro uno (Latin) (traditional)[1]
"One for all, all for one"
Anthem
"Swiss Psalm"
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Bovril is the trademarked name of a thick, salty beef extract, sold in a distinctive, bulbous jar. It is made in Burton upon Trent, Staffordshire and distributed by Unilever UK.

It can be made into a drink by diluting with hot water.
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Motto
"Dieu et mon droit" [2]   (French)
"God and my right"
Anthem
"God Save the Queen" [3]
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Anthem
Amhrán na bhFiann  
The Soldier's Song


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Monosodium glutamate, sodium glutamate, flavour enhancer 621, EU food additive code: E621, HS code: 29224220 (IUPAC name 2-aminopentanedioic acid. Also known as 2-aminoglutaric acid), commonly known as MSG, Ajinomoto, Vetsin, or Accent
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:Not to be confused with electrolysis


Hydrolysis is a chemical reaction or process in which a chemical compound is broken down by reaction with water.[1][2] This is the type of reaction that is used to break down polymers.
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Vegemite (IPA: /'vedʒɪˌmɑɪt/) is a dark brown, savoury food paste made from yeast extract, used mainly as a spread on sandwiches, toast and cracker biscuits, as well as a filling of pastries like
..... Click the link for more information.
Marmite /ˈmɑːmaɪt/ is the name given to two similar food spreads, one produced in the United Kingdom and the other in New Zealand. Marmite is made from yeast extract, a by-product of beer brewing.
..... Click the link for more information.
Autolysis is a process by which a biological cell self-destructs. It is uncommon in adult organisms and usually occurs in injured cells or dying tissue. It occurs when a lysosome allows the digestive enzymes out of its membranes. The cell then, in effect, digests itself.
..... Click the link for more information.


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