The oven-dried samples were ground in a Willey hammer mill, passed through a 2 mm sieve, mixed well and stored in plastic vials. The ground samples were digested by micro- Kjeldahl method (Thomas et al., 1967).
The oven-dried samples were ground in a Willey hammer mill, passedthrough a 2 mm sieve, mixed well and stored in plastic vials. The ground samples were digested by micro- Kjeldahl method (Thomas et al., 1967).