Friday, November 15, 2013

Processing Flow Chart

5.1 Undehusked Guar Splits
  The gum is commercially extracted from the seeds essentially by
  a mechanical process of roasting, differential attrition, sieving and polishing.
  The seeds are broken and the germ is separated from the endosperm.
  Two halves of the endosperm are obtained from each seed and are known as Undehusked Guar     Splits. 

5.2 Refined Guar Splits
Refined Guar Splits are obtained when the fine layer of fibrous material, which forms the husk, is removed
and separated from the endosperm halves by polishing. 

5.3 Guar Powder
The refined Guar Splits are then treated and finished into powders by a variety of routes and processing
techniques depending upon the end product 

5.4 Guar seed Extract
Guar seed consists of three parts, germ (43-47%), endosperm (35-42%) and the husk (1 17%). Extracts from Guar
seed include Guar Split/Gum (29%), Korma (30-35%) and Churi (35-40%). Guar split/gum is further refined to Guar
powder. The by-product of Guar Gum industry consisting of the outer seed coat and germ material is called
guar meal. The Guar meal after gum Extraction is a potential source of protein and contains about 42% crude
protein, which is one and a half times more than the level of protein in guar seed. 

5.5 Guar gum & Splits

Approximately 90% of total Guar produce is used for production of Guar Gum and rest is used for culinary
purposes and cattle feed etc. Guar gum, also called guaran, is a galactomanan. Guar gum is produced from
the endosperm, which is about 35-42 percent of the guar seed mass, and mainly consists of gum Poly groups of
monogalactoses (a type of sugar). Different grades are made based on purity and present viscosity of powers in
water. Guar gum has almost 8 times the thickening power as corn starch, and is used in dressings, sauces, milk
products, and baking mixes.

5.5. (a) Specifications of Guar Splits:
Gum Content
Dehusked Splits
90% Minimum
5% Maximum
Ether Extract
0.6% Maximum
1% Maximum
10% Maximum
Crude Fibre
1.5% Maximum
Degree of refining
Double refined

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