Extraction and partial purification of lipase:
After 24 h of seed germination, the seed coats were
removed manually and 20 g seed cotyledons were
homogenized in chilled acetone at 4°C. The
suspension was centrifuge at 3000 rpm and residue
obtained was dissolved in 100 mL distilled water
followed by centrifugation at 7500 rpm. The
supernatant was used as source of crude enzyme and
was precipitated by ammonium sulphate (80%
saturation) according to Michael et al. (2001). The
precipitate was obtained by centrifugation at 10,000
rpm for 20 min. Precipitate was dissolved in 20 mL
Tris-Cl buffer (10 mM, pH 8.5) and dialyzed
overnight against the same buffer. The dialyzed
enzyme was used as partially purified enzyme and
used for enzyme characterization.