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Castor beans standard

Industry Standard of China Agriculture Department

Quality of castor beans

Table 1   Sensory Index

Item

Grade and Requirement

Grade 1

 

Grade 1

 

Appearance

Regular

Appearance

Regular

Appearance

Smell, Color and lustre

Normal

Smell, Color and lustre

Normal

Smell, Color and lustre

Impurity (%)

Total

Impurity (%)

Content of gravel in impurity

 

Breakage rate(%)

≤ 2 %

Table 2   Physical and Chemical Specifications

Item

Grade and Requirement

Grade 1

 

Grade 1

 

Oil-containing rate %

≥51.0

Oil-containing rate %

≥51.0

Oil-containing rate %

Pure kernel(%)

≥ 73.0

Moisture content
(%)

South

Moisture content
(%)

North

 

Fatty acid value(mgKOH/g)

≤ 5.0

Grade 3 is the valuation base. Castor seeds below Grade 4 is substandard castor seeds.

Issued by Ministry of agriculture of the people's Republic of China