본 연구는 솔잎즙 및 쑥즙의 첨가가 우육포의 저장 중 품질에 미치는 영향을 검토하기 위하여 물을 첨가한 우육포(control), 솔잎즙을 첨가한 우육포(PBJ) 및 쑥즙을 첨가한 우육포(MBJ) 등 세 종류의 우육포를 제조하고 저장 중 색깔, 경도, pH, VBN 함량, TBARS값 및 총균수를 조사하였다. 저장 중 대조구 및 PBJ의 $L^*$값(명도)은 변화가 없었으나 MBJ는 저장 중 높아지는 경향이었다(p<0.05). 그리고 $a^*$값(적색도)은 저장 60일째가 가장 높았으며, PBJ 및 MBJ가 대조구보다 높았다(p<0.05). 황색도를 나타내는 $b^*$값은 저장 60일째가 가장 높았으며, 시료들 사이에 유의한 차이가 없었다. 그리고 솔잎즙 및 쑥즙의 첨가가 우육포의 색깔에는 영향을 미치지 않았다. 경도는 모든 시료가 저장 중 유의하게 증가하는 경향이었으며, 저장 30일까지는 대조구가 PBJ 및 MBJ보다 유의하게 높았다(p<0.05). pH는 저장 중 유의하게 낮아지는 경향이었다(p<0.05). 우육포의 VBN함량은 저장 중 유의하게 증가하였으며, 저장 60일째에는 대조구가 PBJ 및 MBJ보다 유의하게 높았다(p<0.05). TBARS값은 저장 중 유의하게 증가하였으며, 저장 중 PBJ가 가장 낮았다(p<0.05). 총균수는 저장 중 유의하게 증가하여 저장 60일째에는 대조구, PBJ 및 MBJ가 각각 4.93, 4.11 및 4.17 log CFU/g을 나타내었다.
This study was carried out to investigate the effect of the addition of pine needle juice and mugwort juice on the color, hardness, pH, VBN content, TBARS value and total plate count of beef jerky during storage at room temperature for 60 days. Beef jerky was prepared by three types such as beef jerky containing 50 ml water (control), beef jerky containing 50 ml pine needle juice (PBJ) and beef jerky containing 50 ml mugwort juice (MBJ). The L (lightness) value of the control and PBJ was not significantly changed during storage, but the $L^*$ value of MBJ tended to increase during storage (p<0.05). The $a^*$ (redness) value had the highest at the 60 day storage, and the $a^*$ value of PBJ and MBJ were higher than that of the control (p<0.05). The $b^*$ (yellowness) had the highest at the 60 day storage (p<0.05), and the $b^*$ value was not significantly different among samples. The addition of pine needle juice and mugwort juice had no effect on the changes of color of beef jerky. The hardness tended to increase during storage period, the hardness of the control was higher than those of PBJ and MBJ until storage for 30 days (p<0.05). The pH of samples tended to decrease during storage period (p<0.05). The VBN content of samples tended to increase during storage period, and the VBN content of the control was higher than those PBJ and MBJ on the storage of 60 days (p<0.05). The TBARS value of samples tended to decrease during storage period, and the TBARS value of MBJ had the lowest during storage period (p<0.05). The total plate count tended to decrease during storage period (p<0.05), and the total plate count of control, PBJ and MBJ were 4.93, 4.11 and 4.17 log CFU/g, respectively.
