Maize Starch Pharma Grade

S.NO

CHARACTERISTIC

SPECIFICATION

01

Description

Very fine, white or slightly yellowish powder or irregular white masses which are readily reducible to powder, creaks when pressed between the fingers; odorless and tasteless. The presence of granules showing cracks or edge irregularities.

02

Solubility

Practically insoluble in cold water and in ethanol (95%).

03

Identification: A

Polyhedral granules, 2 to 23 m in size, or m in diameter. The central helium consists of a rounded granules, 25 to 32 distinct cavity or two- to five-rayed cleft; no concentric striations. Viewed between crossed Nicole prisms, a distinct black cross is seen intersecting at the helium.

B

Heat to boiling for 1 minute a suspension of 1 g in 50 ml of water and cool; a thin and cloudy mucilage is produced with all starches except potato starch which gives a thick and more transparent mucilage

C

To 10 ml of the mucilage obtained in test B add 0.05 ml of 0.01M iodine; a dark blue color is produced, which disappears on heating and reappears on cooling.

04

Acidity

Not more than 2.0 ml

05

Iron

Not more than 40 ppm

06

Fluorescence

No fluorescence should be visible under screened ultra-violet light.

07

Oxidizing substances

No distinct brown or blue color is observed

08

Sulphated ash

Not more than 0.6%

09

Loss on drying

Not more than 15.0%

10

Microbial limit tests

E.COLI

Absent

Salmonellae

Absent