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August 6, 2011 # 9:04 AM # Raw Materials # No CommentThe botanical compositions of the main kernel barley;
Husk (peel)
- Consists of two structures Palea similar to leaves (ventral side) covering the fold and Lemma (dorsal side) that covers the back of the grain overlap with Pale.
- Protection, prevents water loss
- It consists of cellulose, silica, lignin, pentosans, sugars, beta-glucan, phenolic material
- Approximately 10% of dry barley
Pericarp
- Pericarp is a semi-permeable membrane to protect the grain.
- It limits the absorption of water
- Prevents rot Wheat
- Very thin 0.5 mm
- It consists of cellulose-phenolic
- About 1% of dry barley
Testa
- Testa is also a semi-permeable membrane of the membrane protective spirit of a high concentration of proanthocyanidins, which are responsible for haze in beer.
- Keeps amino acids, sugars, etc.
- Prevents mold / entry of bacteria
- Very thin, two-layer lipid
Aleurone layer
- Synthesize enzymes or active
- About 10% 0f dry weight of barley
- It consists of lipids (30%), protein (20%), phytic acid, pentosans, cellulose fiber, B vitamins, minerals, sucrose
Endosperm
- Store food in the form of starch granules (about 80% by weight barley)
- Starch granules embedded in a protein matrix consists of large starch granules – A type 10 to 48 mm and smaller starch granules – Type B 1 – 10 mm
- Starch granules surrounded by cell walls is composed of 71% beta-glucan and arabinoxylan 23%
Embryo
- Production of growth regulators – hormones
- It consists of (approx.) 25% lipids, protein reserve of 10%, 10% sucrose, 2% raffinose and B vitamins
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