2023/02/24 by Inti Ganganelli, María Celeste Molina Agostini, Andrea Galatro +1 · 1 voice
Agricultural and Biological Sciences · #Berry genetics and cultivation research #Light effects on plants #Postharvest Quality and Shelf Life Management
paper · doi:10.1080/14620316.2023.2180438
openalex publication_date 2023/02/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Light-emitting diodes (LED) have emerged as a non-polluting and energy-saving technology in fruit postharvest. The aim of this work was to evaluate the effect of different LED light pulses during raspberries´ and blackberries´ postharvest under cold storage. Fruit was exposed to short LED light pulses (Green, Blue, Red, and Red+Blue) of 15 min every 2 h for 7 and 14 d of storage at 4°C. Raspberries were more susceptible to water loss. Short LED light pulses decreased internal breakdown in raspberries, and minor effects of LED treatments were observed in blackberries. After 7 d of cold storage, in raspberries, Green, Blue, and Red light treatments increased the content of quinic and malic acids, and only Green and Blue LED sources also increased ascorbic acid content. In addition, Blue, Green, and Blue+Red LED light treatments exhibited a higher level of citric acid at 14 d. In blackberries, fruit changes were mainly because of the cold storage. Overall, these results showed that short LED light pulses can extend the postharvest life of raspberries, decreasing internal breakdown and increasing the content of ascorbic acid, suggesting that different Rubus species have distinct physiological processes underlying ripening and light interactions.