Browning Characteristics of Ssamjang during Storage

저장기간에 따른 쌈장의 갈변 반응 특성

  • Kim, Yong-Kuk (Haechandle Co., Ltd.) ;
  • Kim, Seong-Ju (Dept. of Food Science and Technology, Chungnam National University) ;
  • Chang, Kyu-Seob (Dept. of Food Science and Technology, Chungnam National University)
  • Published : 2005.04.01


Ssamjang samples were prepared by central composite design for five independent variables, Gochujang mash aging period $(X_1)$, Doenjang aging period $(X_2)$, Doenjang content $(X_3)$, sterilization temperature $(X_4)$ and storage temperature $(X_5)$. Browning characteristics of Ssamjang were analyzed such as water activity, free amino acids, free sugars and color during storage. Water activities of Ssamjang were ranged from 0.605 to 0.666 at the beginning of storage, and were shown to be the highest at the 8th week of storage and then decreased gradually. Among free amino acids the content of glutamic acid was the highest. Proline, leucine, phenylalanine, lysine and serine were slightly higher than the others. Larger amounts of free amino acids and free sugars were observed from the sample sterilized at $60^{\circ}C$ when compared to that at $70^{\circ}C$. Glucose, fructose and maltose as free sugars were identified from Ssamjang and glucose content was the largest among. During the storage, lightness $(L^*)$, redness $(a^*)$ and yellowness $(b^*)$ of Ssamjang were decreased and total color difference $({\Delta}E)$ was increased. The color changes in the sample surface were more affected by temperature of which storage temperature was more influenced than sterilization temperature.


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