Rocket salad grows with more vitamin C under LED lights

July 25, 2017 // By Julien Happich
Philips Lighting announced it has developed a new growth recipe that produces seven times the average vitamin C content in arugula, also known as rocket salad.

The vitamin C-rich arugula produced at Philips Lighting's GrowWise Research Center were tested to have seven times higher vitamin C content than the published USDA (United States Department of Agriculture) value of 15 mg/100 gr. The vitamin C-rich arugula was grown in a trial in collaboration with the Dutch Wageningen University and Research, and Maastricht University, using a new growth recipe under Philips LED lighting in a vertical farming environment with no daylight.

The results of this trial show that functional ingredients can be added to fresh food like arugula by simply growing it differently. Retailers and growers can apply specific Philips light recipes using LED technologies to meet the growing demand for functional foods from health-conscious consumers. Since vitamin C is one of the markers of shelf life, the higher vitamin C levels in the arugula at harvest may also help retailers extend the popular green's shelf life, notes Philips Lighting. In addition to vitamin C, other healthy compounds are shown to be influenced by the growth recipe.


Leafs of arugula (rocket salad)

"A Philips growth recipe provides parameters for growing a crop that include the light level, spectrum, intensity, required uniformity, position and time, as well as climate conditions like temperature, humidity, CO2 levels and nutrition" explains Udo van Slooten, Managing Director for Philips Lighting Horticulture LED Solutions. "This achievement confirms the tangible benefits that our research at Philips GrowWise Center is delivering for growers and retailers as they look to meet specific consumer needs like optimized smell, taste and flavor to differentiate themselves in their markets."