Showing posts with label culinary preparations. Show all posts
Showing posts with label culinary preparations. Show all posts

Sunday, September 4, 2011

CULINOLOGY-WHAT IS IT?

Food is a multidimensional subject involving the interplay of chemistry, physics, biochemistry, microbiology, nutrition, sensory science, engineering sciences and agricultural sciences. All foods originate from living sources, be it animal, plant or microorganisms and in nature these sources exist in diverse forms and quality. The food technologists have the onus of safeguarding the quality and safety of foods, besides creating consumer friendly products with extended life through application of science and engineering. If one examines the development of food industry during the last hundred years, it can easily been seen that aspects concerning human health have been ignored with the result that modern society is afflicted with several life threatening disorders like CVD, Diabetes, Hyper tension, Cancer and many others and the temptation is always there to blame the industry for these ills because of wrong products being made and promoted.

What is the upper most consideration for any consumer when given a choice to choose a food? Obviously the consumer is carried away by the color, shape, aroma and eating pleasure provided by the product. It is said that a consumer eats a food first with his "eyes" followed by smell, touch sense and finally through the oral cavity. Ultimate acceptability is determined by the taste sensation caused by chewing, macerating and swallowing of the food. Tastes like sweetness, saltiness, sourness, pungency and bitterness, either singly or in combination provide the final taste perception which "persuades" the consumer to like or to reject. It is this "weakness" on the part of the consumer to go for organoleptically superior foods that is driving the processing industry to pamper to this factor through marketing such products. Does the industry care about the adverse consequences of such an approach? Rarely! In a fiercely competitive market probably the manufacturers of processed foods will have to be one step ahead for survival and they have no option but to cater to the demands from the consumers.

While developing a product food technologists invariably focus more on consumer acceptability rather than the healthiness of the product. Such a distortion of the development perspectives has taken place because of the consumer attitude under which nutrition of a product is relegated to the background. Can this situation continue like this for long without the adverse consequences manifesting in different ways in the coming years? If no restraint is exercised, future of mankind will be in jeopardy and in less than 5 decades the world will be full of giant looking obese people with high morbidity and diverse diseases. There are many initiatives at the national and international level to counteract such a change but with little impact. Foods containing high sugars, high fat and high salt continue to be developed and promoted and it is time food technologists world over change their stance to devote more time for evolving "healthy" foods with greater emphasis on nutrition in preference to sensory quality. A new paradigm will have to emerge to guide these efforts.

According to a recent report a new discipline appears to be emerging in the West to combine nutrition with culinary aspects of foods that will have more emphasis on health but giving equal importance to inter linked subjects like science, technology and preparation skills. Culinology as it is being called is still a new concept and no university is imparting training in this area so far. Probably the health foods, specialty foods, functional foods all may be based Culinology as such foods can emerge only by fusing the culinary skills with food science and technology that will ensure shelf stability and manufacturing wherewithal. Who will be the candidates for training in culinology? Chefs, food technologists or nutritionists? Obviously it has to be the Chefs because they have the necessary skill to create mouth watering recipes and of the basics of nutrition are imbibed they are likely to be in the fore front in developing exciting new foods with excellent health credentials.

Presently in India there are different types of training courses leading to a multitude of degree certificates and about 1000 graduates coming out of these institutions are misfits when it comes to developing healthy foods with high culinary quality. On the other hand there are many catering training centers turning out personnel for the hotel industry with major emphasis on the organoleptically sound products. These trainees are not imparted adequate knowledge about human nutrition and health. If the training course is modified to develop adequate skills for making nutritionally sound products with high culinary quality, trained personnel from such courses will bring out revolutionary changes in the health of the population over the years.

Wednesday, December 15, 2010

UNRIPE GRAPES-A SOURCE OF TARTNESS IN FOODS?

Can unripe grapes be a source of acidulant for food preparation? Obviously it was being used for creating tart taste in foods before the advent of lemon juice which has high concentration of citric acid. The active ingredient in grapes that imparts tartness is Tartaric acid which was known as far back as 800 AD though it was extracted in pure form only in 1769. Credit goes to the French chefs in recognizing the usefulness of green juice obtained from unripe fruits like grapes, crab apples, plums etc in creating special taste and flavor when added to preparations like sauces, condiments, stews, meat products etc and the juice preparation commonly refereed to as verjuice was a standard item in most French pantries.

Tartaric acid is one of the acidulants used by the food industry along with acetic acid, citric acid, fumaric acid, lactic acid, malic acid and phosphoric acid. Acidity is critical for food processing as well as preservation. The famous sugar-acid-pectin gels, which created jams , jellies and preserves, are the basis of an important segment of food industry that processes fruits. Emergence of citric acid as the most important acidulant, probably because of its cost has led to decline of tartaric acid though its role is still critical in specialized preparations like baking powder, emulsifiers as bread improver etc. Besides being an organic acid like other similar ones, tartaric acid in natural form is known to have special inhibitory power against gram negative and gram positive bacteria including Salmonella paratyphi, Bacillus subtilis, Salmonella typhis and Staphylococcus aureus.

The old Verjuice of Midieval times is reported to be resurfacing during the last couple of years with many western cooks rediscovering its special effect in creating highly acceptable taste and flavor profiles in food preparations. Probably sourness was the major taste popular at that time giving Verjuice its prominence in foods. Verjuice is to day made by processing unripe fruits obtained during the thinning process in the vine yards and these half matured fruits have the necessary tartness desired by the cooks. Now it is available in bottles manufactured using modern processing technology to give longer shelf life.

Though green grapes are invariably the raw material most commonly used, in a few cases red varieties are added to create a more attractive product. Like lemon juice, verjuice adds a bright tartness to a wide range of dishes. But it has an advantage over its far more popular competitor. It's a more gentle, subtle tartness, with a faint but definite undercurrent of vegetal sweetness. Because of this, it is more adept at complementing rather than masking other flavors in dishes where it's used. Because of all this, verjuice is considered a good choice for deglazing the pan after sautéing fish or chicken as it adds just the right touch of tart, with no harshness in the background.

In India Tamarind fruit is the most commonly used acidulant and same tartaric acid contributes to the acidity of this food ingredient. Tamarind is grown in Asia, Africa and American continent, leading producers being India, Brazil, Mexico, Costa Rica, Guatemala, Cuba, Puerto Rico etc. While in most cases ripe fruit after shelling is extracted for its juice for use in hundreds of culinary preparations, there are also commercial products based on the pulp. In India dried tamarind pulp, powder and juice concentrate are commercially made and find wide acceptance. Presence tannins, saponins, sesquiterpenes, alkaloids, phlobatamine and other phytochemicals makes tamarind a most potent health protecting food adjunct, especially recognized by indigenous medical practitioners in India. Its reported effect in reducing serum cholesterol and blood glucose levels is especially noteworthy. Probably food industry in India can make tamarind juice popular in western culinary preparations also through effective promotional programs. If color is not needed, green tamarind fruit can be considered for extracting juice through pectinase enzyme intervention and subsequent stabilization.

V.H.POTTY
http://vhpotty.blogspot.com/
http://foodtechupdates.blogspot.com