3.1.1. Extraction yield, total phenolic and mimosine contents
Lead seed extract powder (LSEP), prepared using distilled water
as a medium, had a yield of 26.16 g/100 g. The water soluble
components in LSEP might be proteins, phenolic compounds and
mimosine, among others. Total phenolic content in LSEP was
17.4 g GAE/100 g. Total phenolics and tannin in shoot tip of
L. leucocephala grown in Thailand were 405 and 60.6 mg/100 g
dry matter, respectively (Chanwitheesuk, Teerawutgulrag, &
Rakariyatham, 2005). The phenolics were distributed nonuniformly
at the tissue, cellular and subcellular levels (Naczk &
Shahidi, 2004). Moreover, phenolic content in the plant varied with
different parts and maturation stage, etc.