Stevia-EMAP

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Methanol appears to be used in most extraction and purification processes in Japan, presumably to improve extraction efficiency and facilitate the separation of individual steviosides. More recent processing methods using water filtration procedures do not use methanol and so produce a more ‘natural’ product. Newer factories in Brazil, China and India use water only extraction procedures and claim 96% purity of product.
Purified Water In brief, steviol glycosides are obtained by the extraction of stevia leaves with water. Leaves from different varieties of stevia plants are used for stevioside and rebaudioside A production. Ferric chloride and calcium hydroxide are added to the extract solution to facilitate precipitation. The extraction solution is passed through plate filtration followed by adsorption onto resin; the glycosides are subsequently eluted with ethanol. The solution is decolored with active carbon and concentrated with film evaporators. It is again decolored with active carbon and filtered. The concentrate is spray dried to obtain the primary stevia extracts rich in stevioside or rebaudioside A. Meaning? <strong>Stevia</strong> Leaves With STV≥45% contents Water Extraction Precipitation Filter Ion Exchange Decoloring with active carbon Concentration Decoloring with active carbon Sterile Filtration Spray drying Packing Process Flow Diagram for stevia Extract Quality control
Page 1 and 2: Techno-economic study on Stevia pro
Page 3 and 4: The Guarani Indians of Paraguay had
Page 5 and 6: Stevia was first brought to the att
Page 7 and 8: "Will sugar always be more advantag
Page 9 and 10: Stevia Liquid Extracts: These are c
Page 11 and 12: Food uses Maximum use level (mg Ste
Page 13 and 14: Since the Stevia extract, Rebaudios
Page 15 and 16: ASIA PACIFIC 36% OTHERS 1% EUROPE 9
Page 18 and 19: Stevia stay in the field for severa
Page 20 and 21: From the current study we can notic
Page 22 and 23: • The Root: The root of stevia pl
Page 24 and 25: • The leaf: The leaves are oval o
Page 26 and 27: The component glycosides of particu
Page 28 and 29: • A variety of soil types, rangin
Page 30 and 31: • Plant Varieties: • There are
Page 32 and 33: • Planting: Transplants from cutt
Page 34 and 35: • Appropriate planting time: Tran
Page 36 and 37: • Raised bed preparation: • For
Page 38 and 39: • Pinching tips: Since Stevia has
Page 40 and 41: • Weeding: Removal of weeds can b
Page 42 and 43: • Harvesting: • Timing of harve
Page 44 and 45: Crushing: • After drying, leaves
Page 46 and 47: Pests and Diseases: • Stevia is u
Page 50: Process Flow Diagram for Purificati

Stevia-EMAP

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