In temporary-immersion culture of Bacopa monnieri, green light produced the most new shoots (24.2 per clump) and the highest bacoside A3 (0.39% dry weight), while blue light promoted longer shoots and 2.6-cm internodes. Warm-white and red light enhanced bacopasaponin C. The results can guide in-vitro optimisation but do not establish industrial performance or medicinal efficacy.
Key findings
- Green and blue light significantly enhanced biomass. Green light yielded 24.2 shoots per clump and the highest bacoside A3 at 0.39% dry weight despite the lowest chlorophyll. Blue light promoted longer shoots and 2.6-cm internodes. Bacopaside II did not differ, while warm-white and red light increased bacopasaponin C.
Why this matters globally
Controlled-light plant bioreactors may reduce seasonal variability and improve consistency of medicinal-plant raw materials. This work supports target-specific lighting recipes.
Thai researcher contribution
Pathumthani University and Naresuan University's Plant Tissue Research Unit combined plant physiology with bioactive-compound analysis in a medicinal-plant culture platform.
Limitations to consider
Replicate numbers, photon flux, duration, energy cost, and compound yield per unit time are not reported in the abstract. Higher concentration may not mean higher total yield, and bioactivity and post-acclimatisation stability were not tested.