[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.

QAAFI SCIENCE SEMINAR SERIES
28 March 2017

DESCRIPTION
The structure and material properties of growing and fleshy plant tissues are determined by their (primary) cell walls. The biological requirement in growing tissues for cell walls to combine structural strength with flexibility and extensibility is met through a network of cellulose fibres in a hydrogel form that is modified by the presence of other polysaccharides. From direct measurement on isolated plant cell walls and using a model bacterial cellulose hydrogel system, the molecular rules governing the association of non-cellulosic polysaccharides with cellulose fibres have been deduced. The effects of various features of cell wall hydrogels on the characteristic material properties under small deformation, compression and extension have been characterized and rationalized. Consequences for plant material properties and plant food behavior in the digestive tract will be discussed.

About Prof. Mike Gidley
Professor Mike Gidley is Director of the Centre for Nutrition and Food Sciences (CNAFS) in QAAFI. Prof. Gidley’s career includes 22 years in food R&D in the private sector and the last 13 years at UQ in the Centre for Nutrition and Food Sciences.

Research themes within CNAFS include ‘Smart Selections’ (how to identify the right combinations of raw materials and processing to deliver consumer-preferred foods), ‘Naturally Nutritious’ (maximising the intrinsic nutritional properties of agricultural products in foods and ingredients) and ‘Uniquely Australian’ (identifying and validating opportunities for elite products from foods and ingredients that can only have come from Australia).

Prof. Gidley’s own research is focused on structure – function relationships in important food components such as starch granules and plant cell walls. This has led to the detailed characterisation of starch and dietary fibre digestion/fermentation in vitro and in vivo, with the understanding generated leading to opportunities for optimising nutritional value of foods and feeds. He is a Program Leader in the Australian Research Council Centre of Excellence in Plant Cell Walls (2011-2017)

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