| Autor: |
Vasile Stoleru, Maricel Vitanescu, Gabriel-Ciprian Teliban, Alexandru Cojocaru, Laurian Vlase, Ana-Maria Gheldiu, Ionel Mangalagiu, Dorina Amăriucăi-Mantu, Marian Burducea, Valtcho Zheljazkov, Oana-Raluca Rusu |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Agronomy, Vol 12, Iss 10, p 2397 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2073-4395 |
| DOI: |
10.3390/agronomy12102397 |
| Popis: |
Quinoa is an Andean grain known for its gluten-free grains, which are used as a functional food. The aim of this research was to study the possibility of introducing quinoa as a vegetable crop grown for young leaves as a source of polyphenols and phytosterols. To achieve this goal, a field experiment was performed with three quinoa cultivars (Titicaca, Puno, and Vikinga) grown in a split plot design. The experimental factors included three densities (160, 320, and 760 plants·m−2) and two harvest dates (52 and 62 days after sowing (DAS)). The content of phytosterols (ergosterol, stigmasterol, β-sitosterol and campesterol) and polyphenols (ferulic acid, isoquercitrin and rutozid) in quinoa leaves were determined by HPLC method. The phytosterol content varied within the limits: ergosterol 0–7.62 µg·100 g−1 dw, stigmasterol 79.9–175.3 µg·100 g−1 dw, β-sitosterol 425.7–623.1 µg·100 g−1 dw and campesterol 0–5.25 µg·100 g−1 dw. Ferulic acid varied greatly from 38.0 to 63.3 µg·g−1 dw, isoquercitrin ranged from 63 to 101.6 µg·g−1 dw and rutozid varied widely from 32.9 to 162.8 µg·g−1 dw. The total phytosterols and the total phenolic compounds decreased with decreasing plant number density and DAS. This research demonstrated that young quinoa leaves are a good source of phytosterols and phenolics for human consumption. |
| Databáze: |
Directory of Open Access Journals |
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