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Communication

Examination of Spectral Properties of Medicinal Plant Leaves Grown in Different Lighting Conditions Based on Mint Cultivation

1
Department of Metrology and Optoelectronics, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 11/12 Narutowicza Street, 80-233 Gdansk, Poland
2
NIVISS Sp. z o. o. Sp. k., Rdestowa Street 53D, 81-577 Gdynia, Poland
*
Authors to whom correspondence should be addressed.
Academic Editor: Seung-Chul Yoon
Sensors 2021, 21(12), 4122; https://doi.org/10.3390/s21124122
Received: 14 May 2021 / Revised: 10 June 2021 / Accepted: 10 June 2021 / Published: 15 June 2021
(This article belongs to the Special Issue Advanced Optoelectronic Biomedical Sensing Technology)
Cultivation in controlled environmental conditions can provide good quality medicinal herbs with consistent properties. A sensing system that can determine the contents of medicinal substances in plants using spectral characteristics of leaves would be a valuable tool. Viability of such sensing approach for mint had to be confirmed experimentally, as no data correlating contents of medicinal substances with spectral characteristics of leaves are available, to the best of authors’ knowledge. In the first stage, presented in this paper, the influence of lighting on mint (Mentha rotundifolia) grown on a small hydroponic plantation was studied. Spectral characteristics of leaves were recorded by a spectrophotometer and colorimetric analysis was used to investigate the relationship between these characteristics and the spectrum of lighting. Dry mass yield was measured to test its dependence on the lighting. Dependence of chromaticity of leaves on the spectrum of light used in the cultivation was confirmed. Averaged spectra of leaves are distinguishable using a spectrophotometer and—in most cases—by a human observer. A partial correlation is observed between dry mass yield and the spectrum of lighting. Obtained results justify further research into the correlation between lighting and the contents of biological substances in medicinal plants using spectral characteristics of leaves. View Full-Text
Keywords: spectral measurements; colorimetric analysis; horticultural lighting; measurement system; controlled environmental conditions; hydroponic cultivation spectral measurements; colorimetric analysis; horticultural lighting; measurement system; controlled environmental conditions; hydroponic cultivation
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MDPI and ACS Style

Feldzensztajn, M.; Wierzba, P.; Mazikowski, A. Examination of Spectral Properties of Medicinal Plant Leaves Grown in Different Lighting Conditions Based on Mint Cultivation. Sensors 2021, 21, 4122. https://doi.org/10.3390/s21124122

AMA Style

Feldzensztajn M, Wierzba P, Mazikowski A. Examination of Spectral Properties of Medicinal Plant Leaves Grown in Different Lighting Conditions Based on Mint Cultivation. Sensors. 2021; 21(12):4122. https://doi.org/10.3390/s21124122

Chicago/Turabian Style

Feldzensztajn, Mateusz, Paweł Wierzba, and Adam Mazikowski. 2021. "Examination of Spectral Properties of Medicinal Plant Leaves Grown in Different Lighting Conditions Based on Mint Cultivation" Sensors 21, no. 12: 4122. https://doi.org/10.3390/s21124122

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