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김기남,한상보,김은정,이동선,Kim, Gi-Nahm,Han, Sang-Bo,Kim, Eun-Jeong,Lee, Dong-Sun 한국식품영양과학회 2007 한국식품영양과학회지 Vol.36 No.8
주파수 20 Hz와 0.18 g의 가속도에 해당하는 진동을 1L 유리병에 담겨진 600 g의 물김치에 가하였다. $-3^{\circ}C$와 $-6^{\circ}C$에서 동결의 진행정도를 관찰하였고, $10^{\circ}C$에서는 총산과 $CO_{2}$ 발생을 측정하여 발효진행 정도를 측정하였다. 진동이 없는 대조구를 같은 온도조건에서 두어서 진동의 효과를 비교하였다. $-3^{\circ}C$와 $-6^{\circ}C$에서의 진동은 동결의 과정을 지연시키고, 계속되는 저장에서 작은 얼음결정의 혼합체를 유지하는 데에 있어서 긍정적인 결과를 보였다. $10^{\circ}C$에서 진동은 산의 생성과 $CO_{2}$ 발생을 촉진하여 숙성시간을 단축시키고 시원한 맛을 주는 데 긍정적인 역할을 할 수 있는 것으로 평가되었다. Vibration at frequency of 20 Hz and 0.18 g of acceleration was applied to 600 g watery kimchi contained in a glass jar of 1 L at subfreezing temperature (-3 and $-6^{\circ}C$) and $10^{\circ}C$ in order to see its effect on freezing and fermentation behaviors, respectively. The vibration at the subfreezing temperature delayed the freezing process and contributed to maintaining small ice crystal slurry in subsequent frozen storage. The vibration at $10^{\circ}C$ accelerated the acid and carbon dioxide production from the watery kimchi, which may be beneficial in shortening ripening time and attaining fresh cool taste.
김기남,우정인,최미현,한효미 대한영양사협회 2003 대한영양사협회 학술지 Vol.9 No.3
The purpose of this study was to investigate recognition and buying practices of street-vended foods among college students in Chungbuk Area. A general dietary practices including snacks, related factors of buying street-vended foods were analyzed. The results showed that many students had irregular dietary habit, especially more than eighty percent of them skipped breakfast. More than sixty percent of students had frequent snacks. It was investigated that college students ate street-vended foods two or three times per week. The order of frequent choice of street-vended foods was rice cake with pasted red pepper(51.9%), sweet and sour pork(19.7%), sundae(5.7%). In microbiological examination, MPN of Coliform and CFU of standard plate count was over a standard value respectively, and acid value of frying oil revealed over value for maximum limitation point. Therefore, food and equipment in street-vended food store was evaluated as poor sanitation status. Most of college students have opinion that street-vended food store must be kept the line. In conclusion, nutrition education for college students should be required to protect them from unsafe street-vended foods.