Difference between revisions of "Barley"

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| stowage factor                      = <ul><li>1.42 - 1.84 m<sup>3</sup>/t (bulk cargo)</li><li>1.39 - 1.87 m<sup>3</sup>/t (bags)</li></ul>
 
| stowage factor                      = <ul><li>1.42 - 1.84 m<sup>3</sup>/t (bulk cargo)</li><li>1.39 - 1.87 m<sup>3</sup>/t (bags)</li></ul>
 
| angle of repose                    = Approx. 25° (average value)
 
| angle of repose                    = Approx. 25° (average value)
| humidity and moisture              = <ul><li>Designation: Humidity/water content</li><li>Relative humidity: 70%</li><li>Water content: 11 - 14%</li><li>Maximum equilibrium moisture content: 70%</li></ul>
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| humidity and moisture              = <ul><li>Relative humidity: 70%</li><li>Water content: 11 - 14%</li><li>Maximum equilibrium moisture content: 70%</li></ul>
  
 
| oil content                        = The oil content of barley is approx. 2%.
 
| oil content                        = The oil content of barley is approx. 2%.
| ventilation                        = Recommended ventilation conditions: surface ventilation (see text).
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| ventilation                        = Recommended ventilation conditions: surface ventilation (see text)
| risk factors                        = An excessively high water content may result in self-heating due to increased respiratory activity.
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| risk factors                        = <ul><li>CO<sub>2</sub> Gases</li><li>Temperature; favorable travel temperature range: no lower limit - 20°C. Molds reach optimum activity at temperatures of between 20 and 30°C. In addition, at temperatures > 25°C, metabolic processes increase, leading to increased CO<sub>2</sub> production and self-heating of the barley</li><li>Self-heating / Spontaneous combustion</li><li>Odour</li><li>Contamination</li><li>Mechanical influences</li><li>Shrinkage/Shortage; evaporation may cause weight losses of at most 0.5%.</li><li>Insect infestation / Diseases</li></ul>
 
}}
 
}}
==Description==
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==Description (See also [[Grain]])==
Barley (Hordeum vulgare) is a type of cereal belonging to the grass family (Gramineae), the term "[[cereals]]" covering the grain fruits of cultivated grasses (spikes or ears in the case of wheat, rye, barley and corn; panicles in the case of oats and rice.<br>
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Barley is a common staple in human and animal diets. Part of the grass family, barley grows in over 100 countries and is one of the most popular cereal crops, surpassed only by [[wheat]], [[corn]] and rice. It is currently popular in temperate areas where it is grown as a summer crop and tropical areas where it is sown as a winter crop. Its germination time is one to three days. Barley grows under cool conditions, but is not particularly winter hardy. Barley has a short growing season and is also relatively drought tolerant<br><br>
Barley is grown mainly in the summer, but also in the winter. Barley ears have awns some 15 cm in length growing from them.<br>
 
The structure and chemical composition of the grain vary little between the different types of cereal. The cereal grain is a single-seeded indehiscent [[fruit]], the husk of which is formed by the fusion of the fruit and seed walls. It consists of three components:<br>
 
  
its cracked husk, which gives the grain a greatly increased surface area relative to its mass. This allows the cereal grain to enter into an active exchange of materials with its environment; the endosperm, which constitutes the main component of the grain and the embryo.<br>
 
 
After harvesting, barley usually undergoes further post-ripening, which consists of the high molecular weight substances congregating further with water being expelled (syneresis). As the surface of the cereal then becomes damp because of the elevated water content, this is described as "sweating. In this state, the cereal is highly susceptible to mold and must not as yet be shipped. However, if the water content of the cereal is relatively low (approx. 13 - 14%), proper storage allows the sweat moisture to be absorbed by the air without the risk of mold growth. This sweating process proceeds for a period of approximately 1 - 2 months.<br>
 
 
Prior to loading, checks should be carried out by an independent inspector and a certificate provided in relation to loading moisture content, the absence of odor and contamination and the absence of pests.<br>
 
Excessively damp and incompletely ripened goods may be liable to self-heating, elevated respiratory activity, mold growth and fermentation during transport.<br>
 
Barley which is "dry for shipment" may be kept for up to 12 months or longer provided that the appropriate temperature, humidity/moisture and [[ventilation]] conditions are complied with.<br>
 
 
==Applications==
 
==Applications==
Winter barley is used primarily as an animal feedstuff while summer barley is mainly used to make [[malt]] (sprouted barley grains) for beer and coffee substitute and as a breadstuff.<br>
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It serves as a major animal fodder, a source of fermentable material for [[beer]] and certain distilled beverages, and as a component of various health foods. It is used in soups and stews, and in barley bread of various cultures. Barley grains are commonly made into [[malt]] in a traditional and ancient method of preparation.<br><br>
  
 
==Shipping/storage==
 
==Shipping/storage==
Barley is mainly transported as bulk cargo and only sometimes in bags (seed).<br>
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Barley is chiefly transported as [[Bulk Cargo]] and only sometimes in bags (seed). <br><br>
 
 
Mainly in bulk containers, but also as bagged cargo (e.g. seed) in standard containers. Compliance with limits for the water content of the cargo and container floor must be ensured.<br>
 
 
 
In damp weather (rain, snow), the cargo must be protected from moisture, since wetting and extremely high relative humidities may [[lead]] to mold growth, spoilage and self-heating due to increased respiratory activity.<br>
 
 
 
Suction and blowing devices may cause not inconsiderable damage to the grains.<br><br>
 
<b>Grain size</b><br>
 
Diameter 1 mm, length 8 mm<br>
 
 
 
<b>Stowage space requirements</b><br>
 
Cool, dry, good ventilation.<br>
 
 
 
In the case of maritime transport, the IMO (International Maritime Organization) "Code for Safe Carriage of Grain in Bulk" must be complied with.<br>
 
 
 
When loading an ocean-going vessel with several types of cereal, heavy [[cereals]] (wheat, rye, barley, corn) must be stowed in the lower part of the hold and lighter cereals (oats, millet) in the upper part of the hold, for reasons of stability.
 
 
 
==Risk factors==<br>
 
<b>Temperature<b><br>
 
Barley requires particular temperature, humidity/moisture and ventilation conditions (SC VII) (storage climate conditions).<br>
 
 
 
Favorable travel temperature range: no lower limit - 20°C<br>
 
  
Molds reach optimum activity at temperatures of between 20 and 30°C. In addition, at temperatures > 25°C, metabolic processes increase, leading to increased CO2 production and self-heating of the barley.<br>
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==Humidity/Moisture==
 
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The best way of reducing the activity (respiration) of the [[grain]] and avoiding mold growth and spoilage processes is adequate pre-drying of the barley to approx. 11 - 14% moisture content.<br><br>
Humidity/Moisture
 
Designation                                       Humidity/water content
 
Relative humidity                                       70%
 
Water content                                       11 - 14%
 
Maximum equilibrium moisture content       70%
 
  
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<b>Ventilation</b><br>
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At < 13% moisture contents (and RH of < 70%) barley does not need to be ventilated.
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<br><br>
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Up to moisture contents of 15%, adequate surface ventilation is advisable but not too cold to avoid damp superficial layers beneath the cargo surface. When there is a significant temperature gradient between the cargo and the external temperature, ventilation should be restricted.<br><br>
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Cereals loaded in a too moist condition cannot be protected from spoilage by ship's ventilation system.<br><br>
  
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Note: <i>(Source including Transport Information Service of the GDV)</i>
  
 
[[Category: Products]]
 
[[Category: Products]]
 
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[[Category: Seeds and agriproducts]]
[[Category: Seeds]]
 

Latest revision as of 09:04, 19 November 2012

Infobox on Barley
Example of Barley
Barley.jpg
Facts
Origin This Table shows only a selection of the most important countries of origin and should not be thought of as exhaustive
  • Europe: Denmark, Sweden, other EU countries
  • Africa
  • Asia
  • America: Argentina, Northern USA, Canada
  • Australia: Australia
Stowage factor (in m3/t)
  • 1.42 - 1.84 m3/t (bulk cargo)
  • 1.39 - 1.87 m3/t (bags)
Angle of repose Approx. 25° (average value)
Humidity / moisture
  • Relative humidity: 70%
  • Water content: 11 - 14%
  • Maximum equilibrium moisture content: 70%
Oil content The oil content of barley is approx. 2%.
Ventilation Recommended ventilation conditions: surface ventilation (see text)
Risk factors
  • CO2 Gases
  • Temperature; favorable travel temperature range: no lower limit - 20°C. Molds reach optimum activity at temperatures of between 20 and 30°C. In addition, at temperatures > 25°C, metabolic processes increase, leading to increased CO2 production and self-heating of the barley
  • Self-heating / Spontaneous combustion
  • Odour
  • Contamination
  • Mechanical influences
  • Shrinkage/Shortage; evaporation may cause weight losses of at most 0.5%.
  • Insect infestation / Diseases

Barley

Description (See also Grain)

Barley is a common staple in human and animal diets. Part of the grass family, barley grows in over 100 countries and is one of the most popular cereal crops, surpassed only by wheat, corn and rice. It is currently popular in temperate areas where it is grown as a summer crop and tropical areas where it is sown as a winter crop. Its germination time is one to three days. Barley grows under cool conditions, but is not particularly winter hardy. Barley has a short growing season and is also relatively drought tolerant

Applications

It serves as a major animal fodder, a source of fermentable material for beer and certain distilled beverages, and as a component of various health foods. It is used in soups and stews, and in barley bread of various cultures. Barley grains are commonly made into malt in a traditional and ancient method of preparation.

Shipping/storage

Barley is chiefly transported as Bulk Cargo and only sometimes in bags (seed).

Humidity/Moisture

The best way of reducing the activity (respiration) of the grain and avoiding mold growth and spoilage processes is adequate pre-drying of the barley to approx. 11 - 14% moisture content.

Ventilation
At < 13% moisture contents (and RH of < 70%) barley does not need to be ventilated.

Up to moisture contents of 15%, adequate surface ventilation is advisable but not too cold to avoid damp superficial layers beneath the cargo surface. When there is a significant temperature gradient between the cargo and the external temperature, ventilation should be restricted.

Cereals loaded in a too moist condition cannot be protected from spoilage by ship's ventilation system.

Note: (Source including Transport Information Service of the GDV)