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Article Abstract
Quinoa (Chenopodium quinoa Willd.) microgreens are widely consumed as healthy vegetables around the world. Although soluble dietary fibers exist as the major bioactive macromolecules in quinoa microgreens, their structural characteristics and bioactive properties are still unclear. Therefore, the structural characteristics and bioactive properties of soluble dietary fibers from various quinoa microgreens (QMSDFs) were investigated in this study. The yields of QMSDFs ranged from 38.82 to 52.31 mg/g. Indeed, all QMSDFs were predominantly consisted of complex pectic-polysaccharides, e.g., homogalacturonan (HG) and rhamnogalacturonan I (RG I) pectic domains, with the molecular weights ranged from 2.405 × 10 to 5.538 × 10 Da. In addition, the proportions between RG I and HG pectic domains in all QMSDFs were estimated in the range of 1: 2.34-1: 4.73 (ratio of galacturonic acid/rhamnose). Furthermore, all QMSDFs exhibited marked in vitro antioxidant, antiglycation, prebiotic, and immunoregulatory effects, which may be partially correlated to their low molecular weights and low esterification degrees. These findings are helpful for revealing the structural and biological properties of QMSDFs, which can offer some new insights into further development of quinoa microgreens and related QMSDFs as value-added healthy products.
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| http://dx.doi.org/10.1016/j.foodres.2024.114108 | DOI Listing |
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Article Synopsis
- Quinoa, a nutrient-dense grain native to South America, is celebrated globally as a "superfood," with both its grains and greens showcasing various health benefits, including antimicrobial and antioxidant properties.
- Quinoa greens provide a gluten-free source of protein, essential minerals, omega-3 fatty acids, and are considered a potential solution for malnutrition, particularly due to their year-round cultivation and low resource requirements.
- Despite their nutritional advantages, quinoa greens are rarely consumed, and limited research has been conducted on their health benefits, prompting a comprehensive literature review to highlight their significance in human diets.