Abstract
The changes in chemical composition, chlorides, phenols and fatty acid profile of roasted or not Dolphinfish (Coryphaena hippurus Linnaeus, 1758) samples, after using or herbal salt or common iodized salt (NaCl), during storage under freezing, were evaluated. The ash and chloride contents were significantly higher (p < 0.05) in samples of the roasted fish previously treated with salt, compared to those treated with herbal salt. Oregano herb had a higher content of phenolic compounds and a significant difference (p < 0.05), compared to rosemary and basil herbs. At time “zero”, or after 45 and 90 days of storage under freezing, the fatty acid content of the samples in natura, showed no significant difference (p > 0.05), when compared to the roasted and pre-treated with herbal salt. However, statistically lower values were detected (p > 0.05) in roasted samples pre-treated with salt, showing a positive correlation between phenolic compounds and the antioxidant activity exerted by herbs, in relation to the profile of fatty acids during storage under freezing, preserving nutritional quality. These results contributed to show the good functionality of herbal salt, in addition to encouraging healthy eating habits, by reducing common salt consumption.
Keywords:
fish; spices; fatty acids; phenols; natural antioxidant; functional food