본 연구는 나박김치를 초기 발효시킨 후 김치 냉장고에 저장하면서 먹을 경우 가장 적합한 초기 발효 조건을 결정하기 위하여 수행되었다. 이를 위하여 발효 온도는 4℃, 15˚C, 25˚C로, 발효 시간은 12시간, 24시간으로 달리하여 초기 발효시킨 나박김치를 4℃에서 저장하면서 이화학적, 미생물학적 및 관능적 특성 변화를 조사하였다. 저장 24일 동안 SF25, LF25, LF15의 pH는 감소하는 경향을 나타내었고, SF4, LF4, SF15의 pH는 초기에 상승하다가 저장 기간이 길어짐에 따라 감소하는 경향을 나타내었다. 적숙기의 pH 4.3~4.5 부근에 도달하는데 SF25는 저장 6일, LF15는 저장 21일 정도 소요되었다. 총산도는 초기 발효 직후 SF4, LF4, SF15의 세 처리군 간에 유의적인 차이는 없었고, 다른 처리군인 LF25의 총산도가 처리군 중에 유의적으로 가장 높았으며 SF25, LF15 순으로 유의적으로 높았다. 환원당 함량은 모든 처리군에서 저장 기간에 따라 유의적으로 증가하다가 최대치를 보이고 감소하였다. LF15, SF25 LF25의 용존 CO2함량은 SF4, LF4, SF15의 용존 CO2함량에 비하여 더 빠른 기간에 최대치에 달해 시원한 맛을 빠른 기일 내에 제공할 수 있는 것으로 생각된다. 명도와 적색도는 모든 처리군에서 저장 기간이 길어짐에 따라 감소하고, 황색도는 증가하는 경향을 나타내었다. 총균수와 젖산균수은 초기 발효 직후 LF25가 유의적으로 가장 많았으며 SF4와 LF4는 두 처리군 간에 유의적인 차이를 나타내지 않았고, SF4와 LF4는 처리군 중에 유의적으로 가장 낮은 값을 나타내었다. 총균수와 젖산균수의 변화는 용존 CO2함량 변화와 유사한 경향을 나타내었다. SF4, LF4, SF15는 관능검사 결과 발효가 지연되어 풋내와 짠맛이 높게 평가되었고 탄산미는 낮게 평가되었다. LF25는 관능검사 결과 다른 처리군에 비해 신맛과 이취가 유의적으로 높게 평가되었다. 15℃에서 24시간 발효시킨 나박김치 (LF15)와 25℃에서 12시간 발효시킨 나박김치(SF25)는 탄산미와 관계가 있는 용존 CO2함량이 저장 12일까지 지속적으로 증가하였으며, 관능검사 결과 저장 기간 동안 다른 처리군에 비해 풋내와 이취가 적으면서 탄산미가 높게 평가되어 15℃에서 24시간 발효(LF15)와 25℃에서 12시간 발효(SF25)가 적합한 초기 발효 조건으로 생각된다. 이러한 연구 결과를 통해 물김치류인 동치미나 열무 물김치도 초기 발효 조건에 따라 이화학적, 미생물학적 및 관능적 특성에 많은 차이가 있을 것이므로 이에 대한 연구가 필요하다고 사료된다.

본 연구는 식생활의 향상 및 건강식품에 대한 관심을 반영하여 2%의 저염도 통배추 김치에 미삼추출분말을 단독 또는 미삼추출물과 오미자즙을 병용하여 첨가하였다. 김치는 25℃에서 24시간 발효 한 뒤, 4℃에서 40일간 저장하며 5일마다 김치의 이화학적, 미생물학적 특성과 함께 관능적 특성을 조사하여 상관관계를 분석하였다. pH와 환원당은 저장 초기에는 미삼추출분말 및 오미자즙 첨가군이 유의적으로 가장 높게 나타났지만, 저장 11일부터는 미삼추출분말 첨가군이 가장 높게 나타났다. 산도와 용존 CO2 함량은 저장기간 내내 전반적으로 미삼추출분말 및 오미자즙 첨가군이 가장 높게 나타났으며, 용존 CO2 함량은 미삼추출분말 및 오미자즙 첨가군, 미삼추출분말 첨가군, 대조군의 순서로 유의적으로 높게 나타났다. 경도는 저장기간 내내 미삼추출분말 첨가군이 유의적으로 가장 단단하게 나타났다. 미생물 중 총균수 및 젖산균수는 저장 6일부터 미삼추출분말 및 오미자즙 첨가군이 가장 많이 나타났다. 관능특성검사 결과, 미삼추출분말 첨가군은 신맛이 약하고, 경도가 단단하게 평가되어 대조군에 비해 저장성이 증가되었음을 알 수 있었다. 미삼추출분말 및 오미자즙 첨가군은 미삼추출 분말 첨가군과 인삼향미는 유의적인 차이가 없으며, 쓴맛은 유의적으로 약하게 평가되어 소비자 검사 결과 대조군과 유의적인 차이 없이 미삼추출분말 첨가군보다 높게 평가되었다. 이화학적 특성과 관능검사의 특성검사의 상관관계는, 용출된 국물양은 산도와 양의 상관관계, pH 및 경도와 음의 상관관계가 있었고, 용존 CO2함량과 용출된 국물양은 양의 상관관계가 있었다. 탄산미는 신맛과 매우 높은 양의 상관관계가 있었으며, 경도 및 아삭거림과 음의 상관관계가 있었다. 신맛과 탄산미는 pH와 음의 상관관계, 산도와 양의 상관관계가 있었다. 이상의 결과로 저염도 배추김치에 미삼추출분말과 오미자즙을 첨가함으로써 기능성 증진과 더불어, 인삼의 쓴맛을 완화시켜 기호도를 상승시키는 효과가 있었다. 그러나 미삼추출분말 첨가군의 저장성이 향상되었던 것과는 달리 미삼추출분말과 오미자즙을 함께 넣은 처리구에서는 대조군과 비슷한 발효 양상을 보이는 결과가 나타났는데 이는 미삼과 오미자즙의 상호작용에 의한 결과라고 생각되며, 이에 관한 더 많은 연구가 필요하다고 생각한다.

The objective of this study is to develope natural and economical Naengmyun broth using stock prepared with chicken heads. Proper mixing ratio of chicken head stock and chicken breast broth was determined through the sensory evaluation. In order to find out the attributes of chicken head-chicken breast broth(CH-CB broth), chicken breast broth and beef brisket(BB) broth were mixed to the chicken head stock and compared the preference and chemical elements between the broths were compared. The appropriate mixing ratio for reinforcing the meat broth and savory flavor, of was determined to 3:7(w:w). The comparison of CH-CB broth's and CH-BB broth's elements showed that the amount of crude protein and ash was the same and, in the case of crude lipid, CH-BB broth had 0.01% more than CH-CB broth. In the case of the total amount of free amino acids, CH-CB broth had 1.6 times more than CH-BB broth. A survey with 50 consumers showed that was prefered between CH-CB broth and CH-BB broth. CH-CB broth with significance.

This study was performed to study the removal efficiency of residual organophosphorus pesticides with process for making Perilla Jangachi. Two organophosphorus pesticides(chlorpyrifos-methyl and fenitrothion) were artificially attached to Perilla leaves. Then Perilla leaves were washed with detergent solution for 1minute and rinsed 2 times each for 1 minutes. After washing with neutral detergent solution, Perilla Jangachi was made with 2 steps of optimal condition. As a pretreatment, when soaked with 2% salt concentration solution for 42hours, the removal rate of residual pesticides was 81.75% of chlorpyrifos-methyl and 76.82% of fenitrothion. When Perilla leaves were steamed for 72 seconds after soaking, it became 88.94% and 82.19%, respectively. Finally, after making optimal Perilla Jangachi with 27% onion contents, removal rate was 89.12% of chlorpyrifos-methyl and 82.76% of fenitrothion. Consequently, it appeared that the process for making Perilla Jangachi effectively removed the residual pesticides of Perilla leaves.

Korean native Perilla Jangachi (salted and fermented vegetable) is popular and well-known but little study on its composition and most palatable condition has been reported. This study was performed to observe the change in the contents of chemical components and sensory evaluation of Perilla Jangachi which was prepared through two processing. First, as a pretreatment, Perilla leaves were soaked in salt water. The optimal level of salt concentration and soaking time (salt 4%, soaking time 42hours) was determined. Second, soaked Perilla Jangachi was steamed and then fermented in various ingredients like soy sauce, sugar, onion and so on. In this study, Perilla Jangachi was made by 3 levels of steaming time(30 seconds, 60 seconds, 90 seconds) and onion contents (10%, 30%, 50%). The optimal level of onion contents and steaming time was determined with the results of sensory evaluation by response surface methodology and analysis of composition. Sodium contents were decreased as the levels of onion contents were increased. Flavonoids contents weren't increased although contents of onion were increased. But they were influenced on steaming time that as the levels of steaming time were shortened, flavonoids contents were increased. To lengthen the shelf-life of Perilla Jangachi, the activities of enzyme peroxidase - which changes Jangachi's quality bad - by various levels of steaming time were measured. After steaming 50 seconds, peroxidase became inactive. Reducing sugar contents were decreased relying on either increased steaming time and onion contents. While steaming 30 seconds and 10% onion contents, the content of reducing sugar was 0.858% but steaming 90 seconds and 50% onion contents, it became 0.372%. Among the sensory attributes, brownness was increased as onion contents increased and steaming more than 60 seconds. Saltiness, sweetness, perilla flavor were greater relying on decreased onion contents. Toughness was decreased as both the amounts of onion and steaming time were increased. With this results, the most optimal adding level of onion content and steaming time was determined. Steaming 72 seconds and adding onion 27% was established as a optimal condition of Perilla Jangachi.

Jangachi(salted and fermented vegetable) has been made by Korean traditionally using several kinds of vegetables, which is a good source of variety of nutrients and vitamins. There are many methods for making Jangachi. Generally soy sauce Jangachi is made through two steps. First, as a pretreatment, vegetables are soaked in salt water. Second, soaked vegetables are fermented in various ingredients like soy sauce, sugar, garlic, ginger and so on. This study was performed to observe changes in contents of chemical components and sensory evaluation of pretreated perilla leaf. Perilla leaf was soaked in water with different levels of salt concentration(2, 5 and 8 %) and soaking time(1, 3 and 5 days). The optimal level of salt and soaking time was determined with the results of sensory evaluation by response surface methodology and analysis of composition. The moisture contents decreased as the levels of salt and soaking time increased. The moisture content of untreated sample was 87.5 % and when soaked for 5 days in the water of 8 % salt concentration, it became 78.27 %. pH of Perilla leaf was high in high levels of salt concentration and short soaking time. Total acidity was so opposite to pH that was low in high levels of salt concentration and short soaking time. In the water of 8 % salt concentration, total acidity was 0.14 % when soaked for 1 day, 0.20 % for 3 days and 0.30 % for 5 days. Salt contents became greater as the soaking time increased. As the results of puncture test, soaked Perilla leaf's toughness increased as the levels of salt increased and soaking time decreased. Among the sensory attributes, greenness increased as the levels of salt concentration increased when soaked for more than 3 days. Saltiness and bitterness became greater as the levels of salt concentration increased. Perilla flavor decreased with the short soaking time. Off-flavor increased with the increased levels of soaking time and decreased salt concentration when soaked for more than 3 days. Toughness decreased as the levels of soaking time increased. Crispness increased with the increased levels of salt concentration. The condition of pretreated Perilla was optimum when it soaked for 42 hours in 4 % salt concentration.

This study was conducted to determine the optimum conditions for the preparation of traditional Korean whole cabbage Kimchi with salted shrimp. Sensory, physical and chemical characteristics of Kimchi with various salted shrimp level(1.8, 3.6%), fermentation time(12, 24, 36 hrs) and storage period(1, 4, 7 days) were measured. As the fermentation time and storage day were extended, pH of Kimchis decreased but titratable acidity of Kimchis increased. The more salted shrimp in Kimchi resulted in the higher titratable acidity. The longer fermentation time and the longer storage resulted in the more citric, malic and succinic acid, and the less lactic and acetic acid in Kimchi. The optimum conditions for the preparation of Korean whole cabbage Kimchi were 3.6% salted shrimp level, 12 hours fermentation time and 84 hours(3.5 days) storage period.