This current survey was conducted to examine consumer attitudes toward factors determining beef purchasing and improving distribution systems. The frequency of beef purchasing was shown to reflect social and economic status, where inhabitants in large cities, such as Seoul, with higher salaries showed a higher frequency. In addition, consumers that were in their forties bought beef more frequently than consumers that were in their twenties. Consumers in Seoul and the megalopolis with a monthly income of higher than 200 million won preferred to purchase meat from department stores and discount markets. In contrast, people in small cities with lower incomes tended to buy meat from butcher shops and brand shops. In a question regarding unsatisfaction factors of retail beef, individuals that were in their thirties with a high income had concerns associated with packaging problems. For people under thirty with low income, the consistency of quality and price were the prime concerns. In regards to the beef grading system, consumer response varied between inhabitants, monthly income and age group, where consumers from small cities that were in their twenties and forties with a low income had a negative viewpoint. For the differential beef distribution system, housewives between the ages of 30 and 40 from a small city with an income higher than 200 million won had a positive response; however, a large number of consumers were not familiar with this system. The most demanding beef cuts were in the following order: loin, flank and rib. In addition, the most important factors determining purchasing beef were as follows: price, breed and portion.

본 연구는 국내산 및 중국산 단메밀과 쓴메밀의 일반성 분, 아미노산 조성, 지방산 조성과 루틴 함량을 분석하였다. 다양한 메밀의 수분, 조단백질, 조지방, 조회분, 탄수화물의 함량은 각각 8.78~13.37, 11.00~12.11, 2.87~3.18, 1.80~2.58, 70.2~73.8%로 분석되었다. 국내산 및 중국산 메밀의 주요 아미노산은 aspartic acid(1,105.1~1,403.5mg%), glutamine (2,250.9~2,996.1 mg%), arginine(932.5~1,388.6 mg%)로 분 석되었으며, K(423.7~569.4 mg%), Mg(181.8~255.9 mg%), P(328.6~555.0 mg%)가 주요 미네랄로 분석되었다. 한편, 지방산 조성은 포화지방산인 palmitic acid(14.2~16.1%)와 불포화 지방산인 oleic acid(37.0~40.8%), linoleic acid (31.7~38.6%)가 주요 지방산으로 분석되었다. 또한, 국내산 및 중국산 메밀의 주요 phenolic compound는 루틴으로 분석 되었으며, 쓴메밀(261.0~265.0 mg/g)이 단메밀(4.39~5.68 mg/g)보다 높은 함량을 보였다. 본 연구를 종합하면, 국내산 단메밀은 중국산 단메밀과 비교하여 영양성분은 크게 차이 를 보이지 않았으나, 메밀의 주요 활성성분인 루틴은 약간 높게 함유되어 있었다. 또한 국내산 쓴메밀은 중국산 쓴메 밀에 비하여 Ca, Fe 함량이 높았으며, 루틴 역시 약간 높은 함유량을 보였다. 따라서, 메밀에서 주요 활성성분으로 제 시되고 있는 루틴의 함량이 중국산 메밀보다 국내산 메밀에 높게 함유되어 있기 때문에 국내산 메밀에서 더 높은 생리 활성이 나타날 것으로 기대된다.

In this study, 80% ethanolic extracts of tartary and common buckwheats were assessed for their total phenol content, total flavonoids content, antioxidant activity (DPPH, ABTS radical scavenging activity and reducing power), and anti-adipogenic effects. Our results show that total phenol contents of 80% ethanolic extract from tartary and common buckwheats were 17.35±0.41 and 8.20±0.28 μg GAE/g, respectively. Antioxidant activities of 80% ethanolic extract from tartary buckwheat were significantly higher than that of common buckwheat extract (p<0.05). During adipocyte differentiation, 80% ethanolic extracts of tartary and common buckwheat significantly inhibited lipid accumulation compared to control cells. We further evaluated the effect of buckwheat extracts on the changes of key gene expression associated with 3T3-L1 adipogenesis and ROS production. Tartary buckwheat extract was more suppressed the mRNA expressions (PPARγ and aP2) than that of common buckwheat extract. Moreover, tartary buckwheat inhibited the mRNA expression of both NOX4 (NADPH oxidase 4) and G6PDH (glucose-6-phosphate dehydrogenase). These results indicate that anti-adipogenesis effect of tartary buckwheat can be attributed to phenolic compound that may potentially inhibit ROS production.