In this study the physiochemical characteristics and antioxidant activity of soybean curd were prepared with saltwort (Salicornia herbacea L.). The moisture and protein of the saltwort soybean curd showed no difference among the samples. Ash and lipid were found to be the highest in the soybean curd to which 20% saltwort was added. The contents of mineral(Fe, K, Mg, Zn) were highest in the soybean curd to which 20% saltwort was added, and Ca content was high in the soybean curd to which 16% and 20% saltwort was added. DPPH (1,1-dipheny1-2-picryl-hydrazyl) radical scavenging activity is a method of measuring the antioxidant power of food; this was high in the soybean curd to which 20% saltwort was added. Adding more saltwort led to higher scavenging activity. From the above results, it could be seen that the soybean curd, which is made by adding saltwort, contributed to enhancing the functionality of antioxidant activation and product quality.
This study shows the quality changes of Sulgidduk added Cheonnyuncho fruit powder during storage. Sulgidduk was prepared with freeze-dried Cheonnyuncho, rice flour, sugar syrup and salt. The Sulgidduk, which was made with various amounts (0,3,6,9,12%) of added Cheonnyuncho, was examined by the quality of duration during storage. The pH of Cheonnyuncho Sulgidduk decreased as the amounts of Cheonnyuncho fruit powder increased, and also showed a significant decrease as the storage increased. As the amounts of Cheonnyuncho fruit powder increased, lightness (L) decreased while redness (a) and yellowness (b) increased. During the storage period, the lightness (L) and yellowness (b) were increased, but redness (a) was decreased. In the texture profile analysis, the hardness and springiness were decreased with increasing Cheonnyuncho fruit powder, whereas cohesiveness, gumminess and brittleness were increased. However, the tendency of the changes of characteristics during storage was opposite except for springiness. In conclusion, it is suitable to extend the storage period of Sulgidduk added Cheonnyuncho fruit powder.
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