Profiling Polyphenols in Five Brassica Species Microgreens by UHPLC-PDA-ESI/HRMSⁿ

Abstract

Brassica vegetables are known to contain relatively high concentrations of bioactive compounds associated with human health. A comprehensive profiling of polyphenols from five Brassica species microgreens was conducted using ultra high-performance liquid chromatography photo diode array high-resolution multi-stage mass spectrometry (UHPLC-PDA-ESI/HRMSn). A total of 164 polyphenols including 30 anthocyanins, 105 flavonol glycosides, and 29 hydroxycinnamic acid and hydroxybenzoic acid derivatives were putatively identified.The putative identifications were based on UHPLC-HRMSn analysis using retention times, elution orders, UV/Vis spectra and high resolution mass spectra, in-house polyphenol database, and as well as literature comparisons. This study showed that these five Brassica species microgreens could be considered as good sources of food polyphenols.

Physicochemical properties and storage stability of margarine containing Opuntia ficus-indica peel extract as antioxidant

“…1B). Compounds 6 and 7 displayed both a [MÀH] À at m/z 355.1012, with fragments at m/z 295, 193 and 175 which corresponded to two isomers of the previously identified feruloyl glucose (Sun et al, 2013). Compounds 8-14 and 16 exhibited k max at 254 and 353 nm typical of flavonoids (Fig.…”

Comparison between the mineral profile and nitrate content of microgreens and mature lettuces

“…within 7-14 days after germination (Sun et al, 2013). These greens are produced from the seeds of vegetables and their size is usually between 3 and 10 cm in height, depending on the plant species.…”

Nutrient Content of Cabbage and Lettuce Microgreens Grown on Vermicompost and Hydroponic Growing Pads

“…Microgreens (MG's) are edible seedlings of vegetables, herbs and some flowers that are usually harvested 7-14 days after germination, when they have two fully developed cotyledon leaves [11]. MG's are used to add texture and flavor to various dishes [12] and they are earning a reputation as dense sources of nutrition even though only a few studies have examined their vitamin, nutrient and carotenoid contents [11,13,14]. The potential nutritional benefits of MG's combined with their ease of cultivation in one's home has piqued consumer interest in cultivating MG's, especially given that they are not widely available for retail sale.…”