Effect of combined light-emitting diodes on the accumulation of glucosinolates in Brassica microgreens
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Published:2021-10-18
Issue:1
Volume:3
Page:
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ISSN:2661-8974
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Container-title:Food Production, Processing and Nutrition
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language:en
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Short-container-title:Food Prod Process and Nutr
Author:
Alrifai Oday, Mats Lili, Liu Ronghua, Hao Xiuming, Marcone Massimo F., Tsao RongORCID
Abstract
AbstractAs of recent, microgreen vegetable production in controlled environments are being investigated for their bioactive properties. Phytochemicals like glucosinolates (GLS) are highly sensitive to varying spectral qualities of light, especially in leafy greens of Brassica where the responses are highly species-dependent. The accumulation of bioactive GLS were studied under 8 different treatments of combined amber (590 nm), blue (455 nm), and red (655 nm) light-emitting diodes (rbaLED). A semi-targeted metabolomics approach was carried out to profile common intact-GLS in microgreen extracts of Brassica by means of LC-HRMS/MS. Thirteen GLS were identified, among them were 8 aliphatic, 4 indolic and 1 aromatic GLS. Mass spectrometry data showed sinigrin had the highest average concentration and was highest in B. juncea, progoitrin was highest in B. rapa and glucobrassicin in R. sativus. The individual and total GLS in the microgreens of the present study were largely different under rbaLED; B. rapa microgreens contained the highest profile of total GLS, followed by R. sativus and B. juncea. Sinigrin was increased and gluconasturtiin was decreased under rbaLED lighting in most microgreens, glucoalyssin uniquely increased in R. sativus and decreased in B. rapa and glucobrassicin uniquely decreased in both B. rapa and B. juncea. The present study showed that rbaLED contributed to the altered profiles of GLS resulting in their significant modulation. Optimizing the light spectrum for improved GLS biosynthesis could lead to production of microgreens with targeted health-promoting properties.
Graphical Abstract
Funder
agriculture & agri-food canada
Publisher
Springer Science and Business Media LLC
Reference58 articles.
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