SCIENCE OF FOOD AND COOKING   
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Enhancing flavor by using Umami rich foods

FLAVOR BOOSTING TIPS

Making use of Natural Umami Flavors

In English, it is sometimes described as "meaty" or "savoury". In the Japanese, the term umami is used for this taste sensation, whose characters literally mean "delicious flavour." Umami is now the commonly used term by taste scientists for the fifth taste (the first four being salt, sweet, bitter and sour).

Umami taste is imparted in foods by the free amino acids (of which glutamate is the most plentiful in nature). In humans, however, just two amino acids — monosodium glutamate (MSG) and aspartate evoke the umami response.A striking feature of umami taste in humans is their potentiation by purine nucleotides (such as IMP and GMP) which also have an umami flavor of their own.

Umami doesn't have a pleasant taste alone, but makes the taste of foods more pleasant.

Free glutamate, which results when glutamate is released during the breakdown of a protein molecule, occurs naturally in many foods, such as meat, milk, mushrooms, Parmesan cheese, and tomatoes. There are two forms of glutamate. Glutamate exists in the "bound" form as a part of protein, along with other amino acids. It can also be found in the "free" form in plant and animal tissues. It is free glutamate which plays a role in the palatability and acceptability of foods. Foods which contain high levels of free glutamate, such as cheese and ripe tomatoes, are often chosen for their distinctive and enjoyable flavors. There is no basis that at levels consumed naturally in foods free glutamate will pose a health risk (see full article).

High levels of free glutamate are found in dried seaweed , tomatoes , parmesan cheese, anchovies, fish sauce and mushrooms. Levels of free glutamate in parmesan cheese, a food with one of the highest levels of naturally occurring glutamate, contains about 1.3 grams of free glutamate per 100 grams. This is far less than what would be required to produce any adverse side effects (Note: some reports of side effects from MSG are at levels as low as 0.5 grams). Dried sea weed has a very high free glutamate value of 2240.0 mg/100g.

Working with the Umami Flavor

The glutamate taste sensation is most intense in combination with sodium. This is one reason why tomatoes exhibit a stronger taste after adding salt. It is a multidimensional taste sensation that is not only savory, brothy and mouth filling but actually interacts with the other taste receptors. Umami intensifies the taste of salt and sweet, and balances bitter and sour.

Less Salt and Sugar

While a small amount of sugar can be used to round out and softens flavors, especially cutting a bitter taste, salt will heighten flavors especially in the presence of umami flavors. In combination with umami flavors less salt is needed to boost the flavor. For more information about the science of taste -->See: about taste.

USING UMAMI BASED FOODS AS FLAVOR ENHANCERS

A bit of salt can go a long way not just in giving food a slightly salty taste but in actually enhancing it's other flavors. Adding just a few grains of salt to a fresh tomatoe brings out the natural umami flavor that tomatoes has.

 Tomatoes are high in the free form of glutamate which provides a natural Umami flavor. Roasting tomatoes will further inensifies this flavor. Roasted tomatoes freeze well for the winter and are an excellent flavor booster for many dishes.

 

 Pan roasting portabello mushrooms until browned to the point of being caramelized ftp://edinfo2:@edinfo2.securesites.net/www/edinformatics.com/math_science/science_of_cooking/msg_tag.gif intensifies their rich umami flavor,

Umami flavors intensifies sweet and salt tastes and therefore less salt is needed in your recipe. Using the finest quality Parmesans or other aged cheeses has a more intense umami flavor—so you can use less in a particular recipe.

MORE ON ENHANCING FLAVORS:

WHAT IS CARAMELIZATION?

WHAT IS THE MAILLARD REACTION?

MAKING USE OF THE MAILLARD REACTION BY BROWNING FOODS

References:

Umami - Taste Receptor, Tactile Sensation and Flavor Intensifier

Savoring the flavors -- Chicago area chefs and sommeliers gather to experiment with new pairings of food and wine

A Sensory User's Manual ... using chemistry, physiology, physics and psychology to develop a wine palate...

Flavor-Boosting Tricks Add Spark to Healthy Cooking

TASTE AND TEXTURE PART I: TASTE

SCIENCE OF THE KITCHEN: TASTE AND TEXTURE Part II

Sweet, Sour, Salty, What? The return of bitter to the American palate

Rediscovering the Fifth Taste of Umami

 

 

 

 

 

 

 

 

 

 

 

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