쌀 전분을 포함하는 크림수프 배합비에 친수성 콜로이드인 구아검(guar gum)의 첨가가 수프의 품질특성에 미치는 영향을 조사하였다. 쌀 전분에 구아검을 일부(10~30%) 대체하여 배합한 크림수프의 페이스트 특성을 신속점도측정기(RVA)를 사용하여 측정한 결과 구아검의 사용에 호화개시온도가 낮아지고 최고점도, trough 점도, 최종점도가 증가하였다. 크림수프의 수분 함량은 쌀 전분에 구아검을 10~30% 수준으로 대체한 크림수프에서 약간 높게 나타났으며 색도는 구아검의 대체수준이 증가함에 따라 명도가 약간 감소하였다. 쌀 전분 크림수프의 점도는 옥수수 전분을 첨가한 수프보다 약간 높은 반면에 감자, 고구마, 밀, 타피오카 전분을 사용하여 제조한 크림수프에 비해서는 다소 낮게 나타났으며, 쌀 전분에 구아검의 부분적인 대체에 의해 점도의 상승효과를 나타내었다. 쌀 전분 크림수프는 쌀 전분에 구아검을 일부 대체한 혼합사용에 의해 크림수프의 외관, 향, 맛, 입안의 감촉 등 관능적 기호성을 향상시킬 수 있음을 제시해 주었다.

The principal objective of this study was to determine the optimal mixing condition of two different amounts of cabbage and rice flour for the preparation of a cabbage cream soup. The experimental design was based on the central composite design methodology of response surface, which included 10 experimental points, including two replicates for the cabbage and rice flour. Physiochemical and sensory properties were measured, and these values were applied to the mathematical models. A canonical form and perturbation plot showed the influence of each ingredient on the mixed final product. Water content and pH values increased with increasing quantities of rice flour. Neither cabbage or rice flour affected the L and a values, but the b value increased with greater quantity of both ingredients. Viscosity increased with increasing added cabbage. Sensory evaluation results were significant in the predicted model for flavor (p<0.05), concentration (p<0.01) and overall quality (p<0.01). As a result, the optimum formulations by numerical and graphical methods were calculated as 111.79 g cabbage and 8.99 g rice flour.

The object of this research is to assess both the preference and the recognition on commercial cream soup by gender and age group to design reliable proposals for better product. Of 461 questionnaires handed out to residents at Daegu, Busan and Gyeongju in youngnam area. The data were analysed by chi-square test, t-test and one way ANOVA. The results are summarized as following: (1) the response rate of 78.6 percent liked soup because of it's taste, (2) respondents in ages 20~30's showed higher preference than respondents in ages 40~50's (3) main ingredient is the most important consideration as purchase, (4) vegetable cream soup and mushroom cream soup are shown as highest ranking on the recognition of soup, (5) mushroom cream soup and corn cream soup are shown as highest ranking on the preference of soup.