Diferentes substratos no desenvolvimento de microverdes de beterraba (Beta vulgaris L.)

Abstract

Microgreens are emergency food products generally harvested 7 to 14 days after germination. They contain higher concentrations of ingredients such as antioxidants, phenols, vitamins and minerals than mature vegetables or seeds. A vegetable rich in phenolic compounds, flavonoids and anthocyanins is beet (Beta vulgaris L.). However, there are few scientific studies published in the literature to evaluate the physicochemical properties of microverdes and their associations with cultivation substrates. The objective of this work is to evaluate the influence of different substrates on the quantitative and qualitative attributes of beet (Beta vulgaris L.) microverdes. A completely randomized design (four substrates) was used, consisting of four replications each representing a 50 seeds container. The treatments were composed of four substrates: earthworm humus, commercial coconut fiber substrate, blotter paper and soil. The evaluations were: height, diameter, fresh and dry mass, soluble solids, ph, titratable acidity, anthocyanins, phenols and ratio. Data were subjected to analysis of variance and comparison of means by Tukey test at 5% probability. Coconut fiber substrates and earthworm humus showed better results for length, diameter, fresh and dry mass. The soil substrate provided higher pH microvessels and bioactive compounds with high levels of anthocyanins and phenolic compounds among the substrates.