• 한국식품영양과학회지
• /
• 제27권3호
• /
• pp.419-424
• /
• 1998

This study was carried out to investigate changes in the physicochemical and sensory characteristics of Oiji(Korean pickled cucumbers) prepared with different salts(bay, refined and purified salt). The pH of Oiji prepared with bay salt was higher than those prepared with refined and purified salts. The salt concentration of Oiji prepared with purified salt showed the highest value during fermentation period. The cutting forces at middle part of Oiji prepared with bay and refined salts were higher than those of raw cucumber, and bay salt resulted in the highest force during fermentation period. The result of sensory evaluation indicated significant differences in color, odor, taste, texture and overall acceptability among salts at 5% level. Oiji prepared with bay salt showed the highest score in most the sensory characteristics.

• 동아시아식생활학회지
• /
• 제15권3호
• /
• pp.323-333
• /
• 2005

This study was performed to analyze the quality characteristics of Oiji solution and Oiji preserved with $7\%$ salt brine and the others preserved with Pulsatilla koreana additives of varied concentrations $(3,\;6\;and\;9\%)$ during fermentation (24 days) at room temperature $(20\pm2^{\circ}C)$. The resuls of this experiment was as follows: The pH of Oiji added with Pulsatilla koreana of 3, 6 and $9\%$ tended to decrease as a fermentation period got longer. The acidity of Oiji was increased as a fermentation period got longer and reached the highest value in the 21st day. The acidity of Oiji solution was $0.92\~1.06\%$ and that of Oiji itself was $0.77\~1.61\%$. The Brix value showed $0.77\%$ for Oiji at the frist day and $3.33\~3.70\%$ at the 24th day. The Brix value of the Oiji with no addition showed the lowest value. Salt content was $2.39\~2.53\%$ for Oiji solution and $3.20\~3.33\%$ for Oiji. The tumidity as $\%T$ of Oiji solution was $52.67\%$ at the first day, that of Oiji solution with no addition of Pulsatilla koreana showed $-10.53\%$ and one which added $9\%$ Pulsatilla koreana showed $-1.16\%$ of tumidity as $\%T$ at the 24th day. As the fermentation period got longer, Oiji solution became tumid The tumidity of Oiji . solution with addition of Pulsatilla koreana showed a low level. For the texture of Oiji, hardness decreased in all cases and fracturability also decreased drastically, but adhesiveness increased as fermentation proceeded Sensory evaluation of Oiji with $6\%$ Pulsatilla koreana additives showed the highest score of taste, crispness and overall acceptance expect smell.

• 동아시아식생활학회지
• /
• 제15권5
• /
• pp.613-618
• /
• 2005

This study was performed to analyze the microbiological properties of Oiji soaking solution and Oiji preserved with $7\%$ brine and the others preserved with Pulsatilla koreana additives of various concentration$(0,\;3,\;6,\;9\%)$ during fermentation(24 days) at room temperature$(20\pm2^{\circ}C)$. The results of this experiment are as follows: The total number of microbes showed radical increase up to 6th day of growth period and decreased afterwards. Growth of microbes was impeded in the beginning of fermentation in the case of adding $6\%$ Pulsatilla koreana. The number of lactic acid bacteria tended to increase progressively until 15th day and then decreased, and that in the group of $6\%$ Pulsatilla koreana was relatively lower than those of other groups. Antimicrobial activity against Staphylococcus aereus and Micrococcus luteus was shown weakly from 9th day of fermentation regardless of the concentration of Pulsatilla koreana additives, but inactivated after 21st day of fermentation.

• 한국식품과학회지
• /
• 제36권3호
• /
• pp.385-392
• /
• 2004

시판 오이지 9종에 대하여 pH, 산도, 염도, 색도의 이화학적인 특성과 파쇄성, 경도, 씹힘성을 포함한 조직감 특성, 총균수, 젖산균수, 효모수의 미생물학적 특성, 및 관능적 특성을 분석하였다. 시판오이지 6종의 염도는 3.42-4.47%이었고 재래 오이지는 3.92-7.23%로 시판오이지에 비하여 높았다. 오이지의 pH 범위는 3.43-3.85, 5.10이었으며, 산도는 0.39-0.75%의 범위를 나타내었다. 명도는 시판오이지(37.86-41.48)가 재래오이지 (44.86-50.79)에 비하여 명도가 낮은 경향을 나타내었으며, 시판 오이지의 b값은 13.29-15.94이었고 재래오이지는 16.08-17.90으로 재래오이지의 황색도 값이 시판오이지에 비하여 높은 경향을 나타내었다. 시판 오이지의 a값은-1.47-3.71의 범위이었다. 시판오이지중에서 산도가 높은 오이지는 b값이 높았고 산도가 낮은 오이지는 b값이 낮은 경향을 나타내었다. 시판오이지 6종의 총균수($1{\times}10^{4}-2{\times}10^{7}cfu/mL$)는 재래오이지 3종($1{\times}10^{7}-1.3{\times}10^{9}cfu/mL$)에 비하여 적었다. 젖산균수는 시판오이지 6종$(1{\times}10^{4}-6{\times}10^{6}cfu/mL)$는 재래오이지 3종($4{\times}10^{6}-4.7{\times}10^{8}cfu/mL$)에 비하여 적었다. 효모수는 시판오이지 6종($1{\times}10^{4}-6{\times}10^{6}cfu/mL$ 재래오이지 3종($1.3{\times}10^{6}-3{\times}10^{8}cfu/mL$)에 비하여 적었다. 기계적 조직감 특성 중 파쇄성은 시판오이지 6종은 2,103-2,836g이었고, 재래오이지3종은 2,255-3,010g이었다. 경도는 시판오이지 6종은 475-688g이었고, 재래오이지 3종은 409-890g으로 차이가 있었다. 전반적인 수용도를 평가한 결과, 가장 높은 점수를 받은 제품은 C1과 C2로 7.4-8.0점을 나타내었다. 관능적 특성치와 이화학적 특성치를 주성분 분석한 결과 제1주성분은 79.94%, 제2주성분은 19.94% 설명 가능하였다. 시판오이지의 특성치는 제1주성분이 79.94% 설명 가능하였으며, 제2주성분은 19.94% 설명 가능하였다 C1, C2, C3 및 C7은 전반적인 수용도, 전반적인 맛, 감칠맛, 외관, 경도, b value가 제2주성분에 대하여 음의 방향으로 부하되어 있었다. 또한, 기계적 특성치 중에서 경도와 씹힘성은 염도와 양의 상관을, 관능적 특성치중에서 전반적인 수용도는 감칠맛과 전반적인 맛에 대한 수용도와 양의 상관을 나타내었다(p<0.05).