Oats nutritional characteristics for human consumption have been well described in many papers. Besides a high content of proteins and lipids, the presence of soluble fiber (β-glucans) and unique antioxidant molecules (avenanthramides) confer to oat kernel a high nutritional value, which could be exploited for the production of healthy foods. Thirty oat cultivars (both naked or husked) have been multiplied in 2014 and characterized for the content of β-glucan, soluble phenols (SPs), total avenanthramides (AVNs; 2c+2p+2f) and total antioxidant capacity (TAC). SPs and TAC showed no significant differences between naked and husked samples. Average values of the 30 samples were the following: 1.12 ± 0.16 gGAE/Kg for SPs; 16.39 ± 1.77 mmolTE/Kg for ABTS and 6.74 ± 1.47 mmolTE/Kg for DPPH assay. A significant linear correlation was observed between SPs vs ABTS assay (R2 = 0.53) and SPs vs DPPH assay (R2 = 0.34) (p<0.05). Total AVNs of naked oats were significantly higher than husked samples, with average values of 248.56 ± 194.01 and 84.87 ± 88.66 mg/Kg, respectively (p<0.05). A significant linear correlation was observed between SPs and total AVNs (R2 = 0.51; p = 0.0007) of all 30 samples. In conclusion, as several cultivars, among the 30, have been released in recent years, these results indicate the importance of activating specific breeding programs to improve the nutritional and health protective characteristics of oats.
Oat germoplasm for food: quality characteristics in naked and husked cultivars
NINFALI, PAOLINO;DIAMANTINI, GIUSEPPE;ANTONINI, ELENA;
In corso di stampa
Abstract
Oats nutritional characteristics for human consumption have been well described in many papers. Besides a high content of proteins and lipids, the presence of soluble fiber (β-glucans) and unique antioxidant molecules (avenanthramides) confer to oat kernel a high nutritional value, which could be exploited for the production of healthy foods. Thirty oat cultivars (both naked or husked) have been multiplied in 2014 and characterized for the content of β-glucan, soluble phenols (SPs), total avenanthramides (AVNs; 2c+2p+2f) and total antioxidant capacity (TAC). SPs and TAC showed no significant differences between naked and husked samples. Average values of the 30 samples were the following: 1.12 ± 0.16 gGAE/Kg for SPs; 16.39 ± 1.77 mmolTE/Kg for ABTS and 6.74 ± 1.47 mmolTE/Kg for DPPH assay. A significant linear correlation was observed between SPs vs ABTS assay (R2 = 0.53) and SPs vs DPPH assay (R2 = 0.34) (p<0.05). Total AVNs of naked oats were significantly higher than husked samples, with average values of 248.56 ± 194.01 and 84.87 ± 88.66 mg/Kg, respectively (p<0.05). A significant linear correlation was observed between SPs and total AVNs (R2 = 0.51; p = 0.0007) of all 30 samples. In conclusion, as several cultivars, among the 30, have been released in recent years, these results indicate the importance of activating specific breeding programs to improve the nutritional and health protective characteristics of oats.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
