Epitochem

Potato Starch

Potato starch is a fine, white powder derived from potatoes. It has a high water absorption capacity and good swelling properties, making it effective as a tablet disintegrant.

Chemical Name and CAS Registry Number: Solanum tuberosum starch [9005-25-8]

Functional Category: Disintegrant; binder; diluent

Pharmacopeial Specifications:

  • Identification: Positive starch test
  • Loss on Drying: ≤20%
  • pH (10% dispersion): 4.5–7.5
  • Microbial Limits: Complies with pharmacopeial guidelines

Applications in Pharmaceutical Formulation:

Commonly used as a disintegrant (3-10%), binder, and filler in solid dosage forms. It provides rapid tablet disintegration and improved powder flow properties.

Comments:

Potato starch exhibits higher swelling and disintegration efficiency compared to other starches. It is particularly useful in formulations requiring rapid disintegration in aqueous media.