Effects of Different LED Light Spectra on the Shelf Life and Nutritional Quality of Hydroponically Grown Lettuce in a Plant Factory

Abdullah Aldiyab, Hayriye Yildiz Dasgan

2024

Abstract

A study was conducted to assess the shelf life of lettuce grown under three different LED light spectra using hydroponic techniques in a plant factory. The Batavia-type cultivar ‘Capira’ was used, and seedlings were transferred to an ebb-and-flow system 12 days after sowing. The plant factory was maintained at 25 °C (day), 20 °C (night), with a 12-hour photoperiod, ~400 ppm CO₂, and 60–70% relative humidity. Lettuce was grown under three LED spectra: LED1 = 70% red (610-720 nm) + 30% blue (450-495 nm), LED2 = Full PAR spectrum (400-700 nm), LED3 = 65% red (610-720 nm) + 25% blue (450-495 nm) + 5% white (400 475 nm) + 5% far red (700-760).. After 30 days of growth, the lettuce was harvested and stored at 8 °C and 60–70% humidity for 14 days. Post-storage evaluations included weight loss, chlorophyll degradation, phenolic and flavonoid contents, nitrate levels, and mineral composition. Weight loss ranged from 1.54% to 2.80%, chlorophyll degradation from 8.1% to 11.3%, phenolic decline from 20.2% to 23.2%, and flavonoid loss from 11.68% to 22.6%. Nitrate reduction varied from 26.0% to 47.3%. These results highlight how different LED light spectra influence the postharvest quality and shelf life of hydroponically grown lettuce.

Paper Citation

in Harvard Style

Aldiyab A. and Dasgan H. (2024). Effects of Different LED Light Spectra on the Shelf Life and Nutritional Quality of Hydroponically Grown Lettuce in a Plant Factory. In Proceedings of the 4th International Conference on Research of Agricultural and Food Technologies - Volume 1: I-CRAFT; ISBN 978-989-758-773-3, SciTePress, pages 158-168. DOI: 10.5220/0014224200004738

in Bibtex Style

@conference{i-craft24,
author={Abdullah Aldiyab and Hayriye Yildiz Dasgan},
title={Effects of Different LED Light Spectra on the Shelf Life and Nutritional Quality of Hydroponically Grown Lettuce in a Plant Factory},
booktitle={Proceedings of the 4th International Conference on Research of Agricultural and Food Technologies - Volume 1: I-CRAFT},
year={2024},
pages={158-168},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0014224200004738},
isbn={978-989-758-773-3},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 4th International Conference on Research of Agricultural and Food Technologies - Volume 1: I-CRAFT
TI - Effects of Different LED Light Spectra on the Shelf Life and Nutritional Quality of Hydroponically Grown Lettuce in a Plant Factory
SN - 978-989-758-773-3
AU - Aldiyab A.
AU - Dasgan H.
PY - 2024
SP - 158
EP - 168
DO - 10.5220/0014224200004738
PB - SciTePress