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반응 표면 분석법을 이용한 폴리만뉴로닉산 도토리묵 제조 조건의 최적화
최희숙,고순남,이경혜,Choi, Hee-Sook,Ko, Soon-Nam,Lee, Kyoung-Hae 동아시아식생활학회 2007 동아시아식생활학회지 Vol.17 No.1
The optimum conditions for springiness of polymannuronate acorn mook, in which polymannuronate was added to acorn powder, was investigated by the response-surface method(RSM). The fractional factorial design with three variables, i.e. polymannuronate addition, water addition and boiling time, and with three levels revealed that the range of acorn springiness was $0.804{\sim}0.987$. The governing equation was also partially differentiated for boiling time, showing that the optimum manufacturing condition for $90^{\circ}C$ is addition of 2% polymannuronate, addition of 120 mL of water, and 60 minutes of boiling time.
양종범 ( Jong Beom Yang ),이경혜 ( Kyoung Hae Lee ),최성업 ( Sung Up Choi ) 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2012 한국식품저장유통학회지 Vol.19 No.3
To decrease the intake of animal fat and cholesterol, the changes in the physicochemical characteristics of beef loin cooked through different methods (boiling, steaming, baking, and frying) were investigated. The cooking weight loss, moisture drain rate, and cholesterol drain rate were highest during frying, whereas the lipid drain rate was highest during boiling. The pH value increased markedly during steaming, the acid value of meat fat increased remarkedly during boiling, and the refractive index of meat fat increased notably upon frying. The hardness of meat was remarkedly increased by steaming. The gumminess and chewiness of meat were notably increased by frying. The springiness slightly decreased during all the cooking methods, and the cohesiveness was not significantly affected by any cooking process. The CIE L* (lightness) value increased markedly during boiling, the CIE a* (redness) value decreased markedly during both boiling and steaming, and the CIE b* (yellowness) value decreased notably during all the cooking methods. The fatty acid composition did not significantly change after cooking, except when the meat was fried. Therefore, boiling is an effective cooking method for beef loin to decrease the intake of animal fat.
양진현(Jin-Hyun Yang),이영춘(Young-Chun Lee),이경혜(Kyoung-Hae Lee) 한국식품과학회 2007 한국식품과학회지 Vol.39 No.4
생 홍고추를 열수, 오존수, 과산화수소와 차아염소산나트륨으로 살균 처리하여 적정 살균조건을 선정하고 선정된 조건에서 살균한 홍고추를 -70℃로 냉동하여 -30℃에서 30일 동안 저장한 후 품질변화를 측정하였다. 95℃에서 4분간 열수 처리하였을 때 E. coli와 coliform이 음성을 나티내었으며, 오존수 처리는 0.5 ppm에서 6분간 살균 처리하였을 때, 과산화수소는 2% 용액으로 12분간 살균처리로 응성을 나타냈다. 차아염소산나트륨 처리는 3% 용액으로 4분간 처리하였을 때 음성을 나타내었다. 선정된 각 최적조건에서 살균 처리하여 냉동저장 후 품질변화를 측정한 결과, 드립발생은 열수처리 시료가 15%로 가장 높았다. Ascorbic acid 함량은 오존수 처리 시료를 제외한 다른 처리구들은 대조구의 40%에도 미치지 못하는 함량을 나타내었으며, carotenoids 함량은 오존수 처리 시료가 124.16-182.87㎎%로 가장 적은 손실을 보였다. 관능검사 결과 오존수 처리 시료를 제외한 다른 처리구들은 내피의 탈색이 심하게 일어나고, 특히 열수처리의 경우 살균 처리에 의해 과육이 물러져서 외관이 심하게 손상되어 대조구와 유의적 차이를 나타내었다(p<0.05). 따라서 시험한 살균방법 중에서 오존수처리가 가장 우수한 품질의 살균 생 홍고추를 생산하는데 적합한 방법으로 평가되었다. The optimum sanitization conditions for fresh red pepper were acquired with hot water, ozone water, hydrogen peroxide and sodium hypochlorite. At this condition, the sanitized red pepper was frozen at -70℃, stored at -30℃ for 30 days and then changes of quality in each treatment were measured. Escherichia coli and coliform group were found to be negative with the conditions of 4 min hot water treatment at 95℃, 6 min ozone water (0.5 ppm) treatment, 12 min sanitization for 2%-hydrogen peroxide and of 4 min 3%-sodium hypochlorite treatment. Drip loss was generated highest at the hot water treatment to be 15%. The content of ascorbic acid was less than 40% of the control at all treatments except ozone water treatment. The content of cartenoids was 124.16-182.87 ㎎% at ozone water treatment which was found to be the least loss. The sensory evaluation showed that most treatments except ozone water treatment were significantly different to the control (p < 0.05). Therefore, ozone treatment was evaluated to be the best method for producing the sanitized fresh red pepper.