Edible flowers of Helichrysum italicum: Composition, Nutritive Value, and Bioactivities

PRIMITIVO, Maria João, NEVES, Marta, PIRES, Cristiana L. , CRUZ, Pedro F., BRITO, Catarina, RODRIGUES, Ana C., de CARVALHO, Carla C. C. R., Mortimer, Megan M., MORENO, Maria João, BRITO, Rui M. M., Taylor, Edward J., Millson, Stefan H., REBOREDO, Fernando, Jorge CAMPOS, Maria, VAZ, Daniela C. and RIBEIRO, Vânia S. (2022) Edible flowers of Helichrysum italicum: Composition, Nutritive Value, and Bioactivities. Food Research International, 157 . p. 111399. ISSN 1873-7145

Full content URL: https://doi.org/10.1016/j.foodres.2022.111399

Edible flowers of Helichrysum italicum: Composition, Nutritive Value, and Bioactivities
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Helichrysum italicum (H. italicum) is a halophyte shrub with bright yellow flowers with a strong curry-like aroma. The essential oils of H. italicum have been used in the production of cosmetics and pharmaceuticals, due to their antiallergic and anti-inflammatory properties. In the agri-food sector, H. italicum flowers can be used for seasoning and flavoring food, and as natural food preservatives. Here, we report on the composition, bioactive compounds, and nutritive value of H. italicum flowers. Flowers were mainly composed of carbohydrates (> 80 % dry weight), followed by minerals (6.31 ± 0.95 % dw), protein (5.44 ± 0.35 % dw), and lipids (3.59 % ± 0.53 % dw). High percentages of Fe, Zn, Ca, and K were found in the flower material, along with a high content in antioxidants, polyphenols, and carotenoids, as corroborated by the nuclear magnetic resonance (NMR) data. Flowers were mainly composed of saturated fatty acids (SFAs) (54.50 ± 0.95 % of total FA), followed by polyunsaturated fatty acids (PUFAs) (37.73 ± 1.25 % of total FA) and monounsaturated fatty acids (MUFAs) (7.77 ± 0.34 %), as detected by gas chromatography mass spectrometry (GC-MS) The omega-6 PUFA linoleic acid (22.55 ± 0.76 % of total FA) was the most abundant fatty acid found. Flower extracts showed antimicrobial activity against Saccharomyces cerevisiae and Komagataella phaffii, as well as against Gram-negative (Klebsiella pneumoniae) and Gram-positive (Staphylococcus aureus) bacteria. H. italicum flower material was nontoxic to human intestinal Caco-2 model cells at concentrations up to 1.0 % w/v.

Keywords:Edible wildflowers, Helichrysum italicumanti, microbial activity, antioxidant activity, polyphenols, fatty acids, mineral content, Caco-2 cells
Subjects:C Biological Sciences > C750 Plant Biochemistry
C Biological Sciences > C220 Mycology
C Biological Sciences > C500 Microbiology
Divisions:College of Science > School of Life Sciences (pre-August 2022)
ID Code:49710
Deposited On:07 Jun 2022 13:05

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