4-Hydroxyisoleucine is reported as bioactive compound, which is responsible for
antidiabetic activity of Fenugreek. Our present work Includes standardization and preparation of
different extracts, which are enrich with 4- hydroxyisoleucine. The paper includes some unexpected
observation in extraction pattern of 4-hydroxyisoleucine with different solvents. The quantitative
estimation of 4-hydroxyisoleucine is done by spectrophotometry on the basis of its reaction with
ninhydrin.