Abstract

BACKGROUND

Babyleaf salads such as spinach (Spinacia oleracea L.) and spinach beet (Beta vulgaris L. subsp. cicla var. cicla) are an important dietary source of antioxidants such as ascorbic acid (vitamin C). Such compounds may be important in disease prevention in consumers but the level of these compounds in leaves frequently declines after harvest. As such, methods to maintain antioxidant levels in fresh produce are being sought.

RESULTS

Irrigation deficits were used to apply water stress to S. oleracea and B. vulgaris plants. This treatment prevented postharvest decline of leaf ascorbic acid content in S. oleracea but not in B. vulgaris. Ascorbic acid levels in leaves at harvest were unaffected by the treatment in both species compared to well-watered controls.

CONCLUSION

We have shown that restricted irrigation provides a viable means to maintain leaf vitamin content after harvest in S. oleracea, an important finding for producers, retailers and consumers alike.

Keywords

spinach; spinach beet; ascorbic acid; postharvest; water stress

Published in

Journal of the Science of Food and Agriculture
2016, Volume: 96, number: 9, pages: 2976-2980
Publisher: Wiley-Blackwell

UKÄ Subject classification

Horticulture
Food Science


Publication identifier

DOI: https://doi.org/10.1002/jsfa.7464

Permanent link to this page (URI)

https://res.slu.se/id/publ/76412