Stevia Essay

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Chapter-1
Introduction

The worldwide demand for high potency sweeteners is expected to rise especially with the new practice of blending various sweeteners; the demand for alternatives is expected to increase. The sweet herb of Paraguay; Stevia rebaudiana Bertoni produces; in its leave;, such an alternative with the added advantage that stevia sweeteners are natural products. The sweet steviol glycosides have sensory & functional & properties superior to those of other high potency sweeteners. Stevia is to become a major source of high potency sweetener for the increasing natural food market in the coming future.
Stevia is a word both for a plant & for a sweetener extracted from the leaves of that plant. The plant has been grown used in South America for centuries, and it spread to the rest of the world during the 18th century, when people first began taking the product with them to Europe in large volumes.
In the early 1900s, stevia exploded into popularity in several markets, but the rest of the 20th century was accompanied by vicious battles over it around the world. Some people hail the extract as a healthy, all natural alternative to sugar, while others have health concerns about it, on the basis of laboratory research which suggests the need for further study.
The stevia plant is a perennial shrub native to Paraguay and Brazil. Native Americans in these regions realized that the leaves were sweet, and used them to season teas and other foods. The plant is also sometimes called sweetleaf or sugarleaf, in a reference to the natural sweetness held in the leaves. As Europeans began to explore the foods consumed by Native Americans, they were introduced to stevia.
In the 1930s, chemists in France isolated steviosi...

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...ince, there is a need to use for advanced novel methods of culturing plant to furnish new means for quickly propagating,conserving of endangered species and also introducing exotic plants. The production of high quality planting material of exotic nature propagated from vegetative parts through tissue culture has created new opportunities in global trading. The exotic plants are advantageous for farmers;growers; nursery owners & rural employment. As exotic plants are restricted to their natural environment; the main benefit of tissue culture technology lies on production of high quality & uniform planting material that can be multiplied on a year round basis. The plant selected for such purpose is Stevia rabuadiana Bertoni. Objectives of study:
1. Optimization of growth regulators for multiplication
2. Optimization of growth regulators for somatic embryogenesis.

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