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Quality Comparison of Gelatins Manufactured from Raw and Scalded Pigskins
이무하,김양하,정명섭,Lee, Moo-Ha,Kim, Yang-Ha,Chung, Myung-Sub Korean Society of Food Science and Technology 1987 한국식품과학회지 Vol.19 No.2
젤라틴 생산을 위한 원료로서 알맞은 돈피의 종류를 조사하기 위해 생박 및 탕박한 돈피를 이용하여 생산된 젤라틴의 품질을 비교하였다. 돈피를 1.7% HCl 용액에서 15-18시간동안 팽윤시킨후 수돗물에서 9시간 동안 세척하였다. 세척된 돈피를 $60^{\circ}C$, $70^{\circ}C$ 및 $80^{\circ}C$에서 추출하여 젤라틴을 생산하였다. 생박돈피에서 생산된 젤라틴은 추출온도에 상관없이 젤 강도가 탕박돈피로부터 생산된 것보다 우수하였다. 또한 수율도 생박돈피에서 높았다. 추출온도가 증가함에 따라 젤 강도와 점도는 감소하였고 색깔이 짙은 젤라틴이 생산되었다. 전기영동상으로 비교하여보면 추출온도가 증가할수록 고분자물질이 감소하였으며, 돈피젤라틴(type A)이 type B젤라틴에 비해 훨씬 복잡한 분자구조를 보여주었다. In order to examine the appropriateness of types of pigskin as a raw material for gelatin production, comparison was made on the quality of gelatins made from raw and scalded pigskins. Raw and scalded pigskins were acidified in 1.7% HCl solution for 15-18 hr and then washed by tap water for 10 hr. After washing, pigskins were extracted at $60^{\circ}C$, $70^{\circ}C$ and $80^{\circ}C$ to produce gelatins. Gelatins from raw pigskins appeared to be better in gel strength than those from scalded ones at all extraction temperatures. Gelatin yield was higher with raw than with scalded pigskins. With the increase of extraction temperature, the decrease in gel strength and viscosity was resulted in. More colored gelatins were produced with increasing extraction temperature in both raw materials. Electrophoretic pattern of gelatins showed that higher molecular weight fractions decreased with the increase of extraction temperature and pigskin gelatin had more complicated molecular composition than that of type B gelatin (alkali-treated gelatin).
알레르기 유발식품 표시의 이해도와 중요도-수행도 분석 -서울,경기지역의 식품업체 종사자를 대상으로-
곽동경 ( Tong Kyung Kwak ),정명섭 ( Myung Sub Chung ),박시은 ( Si Eun Park ),백진경 ( Jin Kyoung Paik ),홍완수 ( Wan Soo Hong ) 한국식품조리과학회(구 한국조리과학회) 2014 한국식품조리과학회지 Vol.30 No.3
The purpose of this research is to investigate and analyze food allergy labelling for the arrangement of improvement plans. Survey was done as a quantitative research targeting food industry employees with 399 random workers in Seoul and Gyonggi area. The data was analyzed using SPSS windows (ver. 12.0) for frequency analysis, t-test and factor analysis. The importance and performance of the food allergen labelling were divided by 15 items. Only 43.1% of the workers understood the operation allergic food labels. The first improvement on allergic food labels was “using boldface for food allergen labes”. The importance of all of these factors was significantly higher than performance. The selection attributes with relatively low the performance but high importance(2 quadrant) were“consumer education for allergic food labels” and “training of professional counselors on food allergy”. Therefore, the factors to be improved through the IPA were consumer education and training of professional counselors. With this research and extended efforts for revision of laws, reliability of food industry and accuracy of food labelling would improve, thereby boosting the productive·commercial activities in labelling code.