RETAIL STORE LIGHT CONDITIONS CONTRIBUTE TO POTATO GREENING

Light conditions in retail stores may contribute to potato greening, says a team of researchers at the University of Tasmania, in their recently published study on this subject.

The research team says they aimed to develop a “potato tuber greening risk rating model” for retail stores based on light quality and intensity parameters. This was achieved by firstly exposing three potato varieties to seven specific light wavelengths (370, 420, 450, 530, 630, 660 and 735 nm) to determine the tuber greening propensity.

Detailed light quality and intensity measurements from 25 retail stores were then combined with the greening propensity data to develop a tuber greening risk rating model.

The research team says: “Our study showed that maximum greening occurred under blue light (450 nm), while 53%, 65% and 75% less occurred under green (530 nm), red (660 nm) and orange (630 nm) light, respectively. Greening risk, which varied between stores, was found to be related to light intensity level, and partially explained potato stock loss in stores.”

“Our results from this study suggested that other in-store management practices, including lighting duration, average potato turnover, and light protection during non-retail periods, likely influence tuber greening risk,” the researchers concluded

By Potato Business (potatobusiness.com) 22nd June 2020

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