Item

Superior Grade

Grade I

Grade II

Appearance

White powder or with light yellow shadow, lustrous

Odor

With a special inherent odor of corn starch, no peculiar smell

Item

Index

Superior Grade

Grade I

Grade II

Moisture, % ≤

14.00

14.00

14.00

Acidity (dry basis) /. T ≤

1.50

1.80

2.00

Ash (dry basis) /% ≤

0.10

0.15

0.18

Protein (dry basis) /% ≤

0.35

0.45

0.60

Spotspots/cm2≤

0.4

0.7

1.0

Fineness150μm (100 mesh) pass rate,% ≥

99.5

99.0

98.5

Fattiness (dry basis) /%          ≤

0.10

0.15

0.20

Whiteness

440NM Blue ray reflectivity ≥

Yellow maize

88.0

87.0

85.0

Item

Index

Superior Grade

Grade I

Grade II

Sulfur dioxide, mg/kg    ≤

30.00

Arsenic, mg/kg, counted by As ≤

0.50

Lead, mg/kg, counted by Pb ≤

1.00

Coliforms (MPN/100g)≤

70

Mildew (CFU/g) ≤

100

Item

Superior Grade

Grade I

Grade II

Appearance

White powder or with light yellow shadow, lustrous

Odor

With a special inherent odor of corn starch, no peculiar smell

Item

Superior Grade

Grade I

Grade II

Moisture,%(m/m)

≤14.0

Fineness,%(m/m)

≥99.8

≥99.5

≥99.0

Spot, spots /cm2

≤0.4

≤1.2

≤2.0

Acidity (T)

≤12.0

≤18.0

≤25.0

Ash (dry basis), % (m/m)

≤0.10

≤0.15

≤0.20

Protein (dry basis) %(m/m)

≤0.40

≤0.50

≤0.80

Fattiness (dry basis) % (m/m)

≤0.10

≤0.15

≤0.25

Sulfur dioxide,% (m/m)

≤0.004

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Ferric salt (Fe) ,%(m/m)

≤0.002

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