Oil Content: The most crucial quality parameter for castor is its oil content, which typically ranges between 45% and 55%. A higher oil content indicates better-quality seeds.
Seed Size and Uniformity: Larger, uniform seeds are considered better as they tend to yield more oil.
Purity: Castor seeds should be free from foreign matter such as dirt, plant debris, or other contaminants.Seed Color: Healthy castor seeds have a shiny appearance with a distinct mottled pattern, usually black and white or brown and white. Discolored seeds are often considered lower in quality.
