**5. Conclusions**

Our work characterized main features and demonstrated the potential of two underutilized species for microgreens production. These species are expected to provide yield and phytochemical compositions comparable or higher to that of microgreens from largely cultivated and genetically improved horticultural varieties [29,32,39]. Compared with other microgreens, purslane should be considered highly nutritional due to the amount phenolic compounds with known beneficial impacts on human health, the high amount of ascorbic acid, and possibly, a good β-carotene bioavailability. Although some mineral-specific differences were present, purslane also displayed a higher mineral utilization efficiency. Even so, the difference with borage, and more generally with other microgreen species reported in the literature, were limited and unlikely to have a significant impact on the human diet. On the other hand, borage microgreens provided the benefit of a much higher fresh yield and a more composite and balanced phenolic profile, which may possibly increase the commercial interest for this underutilized species.

**Supplementary Materials:** The following is available online at https://www.mdpi.com/article/10.339 0/horticulturae7080211/s1. Figure S1: Microgreens at harvest. A: *Portulaca oleracea*; B: *Borago officinalis*. Not to scale.

**Author Contributions:** Conceptualization, C.E.-N. and Y.R.; methodology, G.C. and C.E.-N.; software, A.P.; validation, G.C. and C.E.-N.; formal analysis, G.C., C.E.-N., G.G., A.P., and P.G.; investigation, G.C., C.E.-N., and M.C.K.; resources, G.G. and A.Z.; data curation, C.E.-N., G.G., A.P., A.Z., and P.G.; writing—original draft preparation, G.C. and C.E.-N.; writing—review and editing, G.C., C.E.-N., and Y.R.; visualization, G.C., and C.E.-N.; supervision, Y.R., A.R., M.C.K., and S.D.P.; project administration, G.C., A.R., S.D.P., and Y.R.; funding acquisition, G.C. and Y.R. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** The data presented in this study are available in the article. Raw data are available on request from the corresponding author.

**Acknowledgments:** The authors would like to thank Luca Scognamiglio, Daniele Capurso, Luigi G Duri, and Francesco Cristofano for their technical help during the experiment.

**Conflicts of Interest:** The authors declare no conflict of interest.
