What does this research mean for the field?

Optimized LED spectral irradiance ratios, specifically tailored with varying proportions of blue, green, red, far-red, and UV-A light, significantly enhance the biomass, secondary metabolite production, and essential oil yield of Ocimum × africanum Lour. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This research aims to determine how different LED spectral irradiance ratios impact the growth and essential oil production of Ocimum × africanum.

July 29, 2026MoleculesOpen Access

Experiment-Based Optimization of LED Spectral Irradiance Ratios for Enhancing Biomass, Secondary Metabolite, and Essential Oil Yields and Compositions of Ocimum × africanum Lour. Under Controlled Environmental Conditions

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Authors

CHChu Thị Thu HàVietnam National University, Hanoi TVThi Nghiem VuVietnam Academy of Science and Technology QTQuang Cong TongVietnam Academy of Science and Technology

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Implication

Randomized trial evaluated LED spectral ratios for enhancing biomass and essential oil yield in Ocimum × africanum, indicating effective cultivation strategies.

Key Points

This research aims to determine how different LED spectral irradiance ratios impact the growth and essential oil production of Ocimum × africanum.
Evaluated four LED light treatments with varying spectral ratios alongside a low-light control under controlled conditions.
Maintained a constant 16 h photoperiod with light intensity of 220 µmol·m−2·s−1 for four weeks.
Measured growth parameters, secondary metabolite concentrations, and essential oil compositions.
F1 treatment achieved the highest biomass of 8.3 ton/ha (p < 0.01).
F2 treatment resulted in the greatest plant height of 76.62 cm and chlorophyll a concentration of 7.41 mg/100 g (FW).
F4 treatment showed the highest essential oil content of 0.83% (DW) and total flavonoid content of 14.17 mg/g (FW).

Cite This Study

Hà et al. (2026) studied this question.

synapsesocial.com/papers/6a69a25ec8da07d9defa5a0b https://doi.org/10.3390/molecules31152618

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Implication

Randomized trial evaluated LED spectral ratios for enhancing biomass and essential oil yield in Ocimum × africanum, indicating effective cultivation strategies.

Experiment-Based Optimization of LED Spectral Irradiance Ratios for Enhancing Biomass, Secondary Metabolite, and Essential Oil Yields and Compositions of Ocimum × africanum Lour. Under Controlled Environmental Conditions

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Key Points

Cite This Study

Experiment-Based Optimization of LED Spectral Irradiance Ratios for Enhancing Biomass, Secondary Metabolite, and Essential Oil Yields and Compositions of Ocimum × africanum Lour. Under Controlled Environmental Conditions

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Key Points

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