[Latin Name] Stevia rebaudiana

[Plant Source]from China

[Specifications] 1.Stevia Extract Powder (Steviosides)

Total Steviol Glycosides 80%, 90%, 95%

2. Rebaudioside-A

Rebaudioside-A 40%, 60%, 80%, 90%, 95%, 98%

3. Stevioside 90%

One monomer in Steviol Glycosides

[Appearance] Fine white powder

Plant Part Used:Leaf

[Particle size] 80 Mesh

[Loss on drying] ≤5.0%

[Heavy Metal] ≤10PPM

[Shelf life] 24 Months

[Package] Packed in paper-drums and two plastic-bags inside.

[Net weight] 25kgs/drum

Stevia Extract

[Characteristics]

Stevia sugar features high sweetness and low calorie and its sweetness is 200 350  times of that  of cane sugar but its calorie is only 1/300 of that of cane sugar.

The component of stevia extract that gives it its sweetness is a mixture of various steviol glycosides. The components of sweetness in stevia leaves are stevioside, rebaudioside A, C, D, E and dulcoside A. Rebaudioside C, D, E and dulcoside A are small in quantity. The principal components are stevioside and rebaudioside A.

The quality of stevioside and rebaudiosideA is better than those of other components, which are commercially extracted and used in various applications.

The steviol glycosides present in stevia extract are referred to as “steviosides” or ¡°stevia extract¡±. Among these “steviosides”, the most common is Stevioside followed by RebaudiosideA. The Stevioside has a slight and pleasant herbal taste and the Rebaudioside-A has no herbal taste.

Although Rebaudioside C and dulcoside A are small in quantity in stevia extract, they are the major components giving bitter aftertaste.

[Function]

A large number of pharmaceutical tests have proved that stevia sugar has no side effects, carcinogens, and is safe for eating.

Compared with cane sugar, it can save 70% of the cost. With pure white color, pleasing taste and no peculiar smell, Stevia sugar is a new sugar source with broad perspective for development. Stevia rebaudianum sugar is the natural low hotsweet agent mostly similar to the flavor of cane sugar, approved to be used by State Ministry of Health and Ministry of Light Industry.

It is the third natural succedaneum of cane sugar and beet sugar with development and health care value, extracted from the leaves of the herbal vegetable of the composite family-stevia rebaudianum.

Stevia grows best in upland areas in sub-tropical climate. In other places it can be grown as an annual. The plant prefers a lightly textured, well-drained soil to which organic matter has been added. It needs ample water so that the soil is consistently moist, but not wet. In hot, sunny climates it will do best in semi-shade. Propagation is from seed sown in spring, but germination rates can be low-expect half the seeds sown not to germinate. Plant seedlings out once all danger of frost is over. Leaves are best harvested just before flowering. The plants will also grow from cuttings,which are best taken in late winter.The concentration of stevioside in the leaves of Stevia increasing when the plants are grown under long day condition.While, cultivating stevia on a large scale, it can be grown in well-drained red soil and sandy loam soil. The soil should be in the pH range of 6.5-7.5. Saline soils should be avoided to cultivate this plant.

Stevia can be successfully cultivated all around the year all over India expect theareas, which receive snowfall, or temperatures go below 5 degree Celsius in winter.The summer temperatures actually do not affect this plant if the high summer temperatures have already been factored in the cultivation practices.Since seed germination rate is very poor,it is propagated vegetative. Though stem cuttings are used for vegetative tissue culture plants have proven to be the best planting material for Stevia. Tissue culture plants of Stevia are genetically pure, free from pathogens and haveexcellent vigor. The tissue culture plants can be planted throughout the year,expect during peak summer. An ideal planting density is 40,000 plants per acre with spacing of 25×40 cm in a raised bed system. The soil can be enriched with abasal dressing of 25 tons of well rotten farmyard manure/hectare

Soil Type
Stevia requires very good drainage any soil that retain the moisture for very long period of time are unsuitable for Stevia cultivation and should be religiously avoided.Red soil and sandy loam with a 6-7 pH are best for the cultivation of Stevia.

Raised bed preparation
Forming raised beds is the most economical way to grow Stevia. The raised bed should be of 15 cm in height and 60 cm in width. The distance between each plant 23 cm. This would give a plant population of around 40,000 per acre.

Planting Material
There are basically two options for multiplication. The first is the tissue culture and second the stem cutting. Tissue culture is the best option but many farmers are tempted to try the stem cutting method for multiplication. As per practical experience, stem cutting is sometimes more expensive to produce than the tissue culture since the success rate of the stem cuttings establishment is very low, it takes minimum of 25 weeks for the stem cutting to develop in proper feeding roots for transplantation (younger stem cuttings transplants have shown more than 50% mortality in first few weeks of transplants in main field).

Harvesting
Another important aspect of harvesting is the timing of harvest. It should be noted that at no point of time plants should be allowed to flower since after flowering the Stevioside percentage goes down rapidly and leaves are rendered unmarketable. Leaves are harvested by plucking in a small quantity, or the entire plant with the side branches is cut leaving 10 to 15 cm from the base.The first harvesting can be done four to five months after planting. Subsequent harvesting can be done every three months, for five consecutive years. The sweetener in the leaf is maximum till the plant flowers. Just before flowering, the plant should be cut completely leaving 10 cm from the ground. The new flush of leaves will sprout from here. The new plant will be ready for harvest again in three months. The plant yields around 3000 kg of dried leaves from an acre of plantation every year. Harvesting should be done as late as possible, since cool autumn temperatures and shorter days tend to intensify the sweetness of the plants as they evolve into a reproductive state.

Unlocking the sweetness in your harvest
Once all leaves have been harvested it’s required to dry them. This can be
accomplished on a net. The drying process is not one that requires excessive heat;more important is good air circulation. On a moderately warm fall day, stevia crop can be quick dried in the full sun in about 12 hours. (Drying times longer than that will lower the stevioside content of the final product.)
Crushing the dried leaves is the final step in releasing stevia’s sweetening power. The
dried leaves are powdered, sieved and the fine powder is stored in containers. This can be done either by hand or, for greater effect, in a coffee grinder or in a special blender for herbs.

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(7 Jul 2016) LEAD IN:
There’s a sweet spot growing in southern Spain’s Andalucia region.
Many farmers are now turning to Stevia – a plant that is widely being used as a natural sugar substitute.
While the Spanish industry is seeing new trading and processing companies beginning to emerge, there’s still several hurdles to overcome.

STORY-LINE:
Around 200 times sweeter than sugar and with a slight taste of licorice – this is Stevia.
Used widely as a sugar substitute, stevia is a fast growing plant that thrives in Malaga’s unique tropical weather.
Farmer Sergio Martin is busy cultivating the latest crop of plants in Malaga.
He and many other farmers are turning away from traditional agriculture and growing stevia instead because of the higher returns.
“Before I sowed my tomatoes, pepper, onion, potatoes… But the future of that kind of agriculture is very dark. So, I have chosen to change to another type of agriculture, to stevia. Because, it’s a plant that does not store pests. It has three harvest seasons per year. Now it’s four years since we seeded it and there is no need to seed it again. So, it’s more affordable, in the sense of being able to maintain it without big costs,” explains Martin.
The compound extracted from stevia is unique among other food ingredients because it doesn’t contain calories and it’s secure for diabetics because it doesn’t affect insulin levels.
Once stevia leaves are dry, they must be boiled in order to extract the sweetener (Steviol glycoside), also known as compound E-960.
In 2010, Granada University botany lecturer Jose Luis Rosua set up technology company SteviGran (acronym for Stevia and Granada) to process the leaves.
He explains the process: “We receive kilograms of dried leaf. Then we begin to boil it in order to extract its compounds. Obviously, after the first boil we get a product with these features (while holding a jar full of dark liquid extracted from Stevia plant) that does not have European Union authorisation. So, we must purify it. There are different stages during the purification process – micro, ultra and nano filtration – until we achieve a purified product like this (while holding a jar full of liquid that looks like water). This purified product can be sold diluted, as long as it has 95 percent steviol (glycoside). Or it’s normally sold as stevia pure powder.”
SteviGran processes pure stevia powder and turns it into pills to be used as a sugar alternative.
Jams, chocolates, even beer are some products that includes this natural sweetener from the Stevia plant.
With more consumers worried about calorie intake and the effects of sugar and artificial sweeteners, many are turning to stevia.
Some worldwide food companies as Coca-Cola Company and PepsiCo have launched several drinks flavoured with stevia.
However, stevia isn’t as perfect as it sounds. Some chefs say it is difficult to work with as it doesn’t always mix well with other ingredients. It can also be hard to counteract its peculiar licorice flavour in certain recipes.
Some nutritionists are also calling for more scientific work on the impact and effects of stevia on the human body.
Professor José Miguel Mulet from the Agricultural Engineering and Natural Environment school at the Polytechnic University of Valencia says there is a lot of misinformation about stevia.
In the European Union, stevia leaf is not recognized as food product and farmers are not allowed to sell the plant or leaf to herbalists.
It is classified only as a raw material to obtain the sweetener.
In November 2011, the European Union legalized the sweetener extracted from the stevia plant, the steviol glycoside known as E-960, as a new food, but not the Stevia as a plant.

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