More than 50% of the brine shrimp nauplii survived after 24 h incubation in 1 mg/mL noni seed aqueous extract or green tea infusion, indicating a lack of cytotoxic potential (LC50 >1 mg/mL).
There was no significant difference between the 24 h survival rates, which were 84.2±25.8% for noni seed extract and 56.7±16.7% for green tea, (Table 2).
With the incubation times extended to 40 h, an excellent survival rate of 66.1±14.0% was observed with noni seed extract. The 40 h survival rate in green tea, however, was zero.