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Advisor(s)
Abstract(s)
In addition to improving sensory aspects, the incorporation of edible flowers in the human diet
has been described as able to promote benefits for consumer health, mainly associated with
their phenolic composition [1]. Impatiens walleriana Hook.f. is an edible ornamental plant,
originally from East Africa and popularly recognized for its attractive colorful flowers [2]. The
bioactivities present in flowers of the genus Impatiens have auspicious potential for the food,
pharmaceutical and cosmetic industries [3]. In this sense, the present work focused on the
chemical and bioactive characterization of flowers of Impatiens walleriana Hook species,
particularly the pink and orange varieties.
The phenolic compounds were determined by high performance liquid chromatography
coupled to a diode detector and a mass spectrometry detector (HPLC-DAD-ESI/MS) and the
bioactive compounds were evaluated through in vitro assays by determining the antioxidant
(through the inhibition of the oxidative hemolysis assay, OxHLIA), antimicrobial (by means of
a panel of six bacteria and six fungi) and anti-inflammatory activities (in mouse macrophage
cells) and cytotoxicity (in tumor and non-tumor cell lines using the sulforhododamine B
method).
Both studied samples showed significant amounts of phenolic compounds, namely four
phenolic acids, one flavonone and ten anthocyanins (divided into malvidins, pelargonidins and
peonidins) being that the orange variety showed a total amount of compounds lower than the
pink variety. Likewise, although both extracts presented a good bioactive performance in all
tests carried out, the pink variety stood out as being superior compared to the orange variety.
Overall, the flowers of I. walleriana emerge as a promising resource to be explored by the food
industry.
Description
Keywords
Flowers Human diet
Pedagogical Context
Citation
Pires Junior, Eleomar de O.; Pereira, Eliana; Pereira, Carla; Dias, Maria Inês; Calhelha, Ricardo C.; Ćirić, Ana; Soković, Marina; Garcia, Carolina C.; Ferreira, Isabel C.F.R.; Caleja, Cristina; Barros, Lillian (2021). Bioactive profile of the extract of the petals of Impatiens walleriana as a natural food coloring alternative. In 5th International Symposium on Phytochemicals in Medicine and Food. Nanchang, China