| Autor: |
Vento M; Institute of Biology and Agricultural Biotechnology (IBBA), National Research Council, 56124 Pisa, Italy., Della Croce CM; Institute of Biology and Agricultural Biotechnology (IBBA), National Research Council, 56124 Pisa, Italy., Bellani L; Institute of Biology and Agricultural Biotechnology (IBBA), National Research Council, 56124 Pisa, Italy.; Department of Life Sciences, University of Siena, 53100 Siena, Italy., Tassi EL; Research Institute on Terrestrial Ecosystems (IRET), National Research Council, 56124 Pisa, Italy., Echeverria MC; eCIER Research Group, Department of Biotechnology, Universidad Técnica del Norte, Av. 17 de Julio 5-21 y Gral. José María Córdova, Ibarra 100150, Ecuador., Giorgetti L; Institute of Biology and Agricultural Biotechnology (IBBA), National Research Council, 56124 Pisa, Italy. |
| Abstrakt: |
The study of different processing techniques, such as sprouting, cooking and fermentation, can help to develop new products for human health. In this work, raw, cooked and fermented seeds and germinated seeds of Chenopodium quinoa Willd. var. Tunkahuan and Amaranthus caudatus L. var. Alegrìa were compared for the content of antioxidant molecules, total antioxidant capacity and mineral elements. Fermentation was induced spontaneously, with the yeast Saccharomyces cerevisiae , with the bacterium Lactobacillus plantarum and with both microorganisms, for 24 and 48 h. The increase in antioxidant molecules and antioxidant activity was induced by germination, by 24 h of spontaneous fermentation (polyphenols and flavonoids) and by 24 h of L. plantarum fermentation (total antioxidant activity) for both species. Germinated seeds of the two plants showed higher values in respect to seeds of macroelements and microelements. No genotoxic but rather protective effects were determined for seed and germinated seed extracts using the D7 strain of S. cerevisiae , a good tool for the evaluation of protection from oxidative damage induced by radical oxygen species (ROS) in cells and tissues. Therefore, the two varieties could be very suitable for their use in human diet and in supplements, especially as germinated seeds or as fermented foods. |
