• 한국조리학회지
• /
• 제22권2호
• /
• pp.206-221
• /
• 2016

스마트 폰 확산과 배달 앱의 이용 증가로 인해 배달 앱 이용 시 소비자가 지각하는 감정반응과 앱 이용의도에 관한 연구의 필요성을 제시하였다. 따라서 본 연구에서는 배달 앱에 대한 이용의도를 높일 수 있는 변수로 배달 앱의 서비스품질과 PAD의 2가지 감정차원, 각성과 즐거움을 제시하여 그 역할을 규명하고자 하였다. 이러한 분석결과를 토대로 배달 앱 콘텐츠 개발과 운영에 필요한 기초적인 자료를 제공하고자 하였다. 연구의 조사대상과 공간적 범위는 최근 3개월이내 배달 앱을 이용한 경험이 있는 전국의 20세 이상 남녀 내국인 거주자로 정하였으며, 조사대상자 중에서 배달의 민족, 요기요, 배달통을 통해 음식을 주문한 경험이 있는 외식소비자들을 대상으로 설문조사를 하였다. 연구결과, 배달 앱 서비스품질의 디자인과 공감성은 각성에 긍정적인 영향을 미치며, 디자인과 신뢰성은 즐거움에 긍정적 영향을 미치는 것으로 나타났다. 배달 앱 서비스품질의 정보성과 이동성은 앱 이용의도에 긍정적인 영향을 미치는 것으로 나타났다. PAD의 즐거움은 앱 이용의도에 긍정적인 영향을 미치나, 각성은 아무 영향력이 없는 것으로 나타났다. 외식소비자들이 배달 앱을 지속적으로 이용하도록 유도하기 위해서는 디자인과 신뢰성, 정보성, 이동성이 매우 중요한 요인임을 제시하였다.

• 한국식품위생안전성학회지
• /
• 제27권3호
• /
• pp.203-208
• /
• 2012

식품안전사건의 보도에 사용되는 용어의 차이가 risk communication에 미치는 영향을 분석하기 위해 18가지 주요 식품안전사건에 대한 자료를 수집하고, 전문가 설문조사를 통해 각 사건의 보도에 사용된 용어의 차이를 비교 분석하였다. 주요 식품안전사건의 자료를 수집하여 분석한 결과, 정부, 지자체, 언론 및 소비자 단체가 사건의 보도에 사용한 용어의 불일치는 사건을 확대시키고, 사회경제적 손실에 큰 영향을 주는 것으로 판단되었다. 전문가 설문조사 결과, 보도 및 대응용어의 파급효과차이 정도와 소비자가 느끼는 두 용어의 차이 정도에서 과자 아토피 유발 사건, 포르말린 통조림 사건, 고름우유 사건, 불량만두 사건 등 높은 순위를 차지한 사건들이 유사하게 나타났으며, 이 둘의 상관관계를 분석한 결과 상관계수가 0.865로 높은 정의 상관관계를 보였다. 따라서 보도에 사용되는 용어에 따라 사건의 파급효과가 크게 영향을 받는 것으로 판단되고, 사건보도 시 용어의 표준화가 필요한 것으로 판단되었다. 본 조사 결과는 정부, 기업, 소비자간 성공적인 risk communication 방안 마련을 위한 기초자료로 사용될 수 있을 것이다.

• Preventive Nutrition and Food Science
• /
• 제10권4호
• /
• pp.349-352
• /
• 2005

The growth inhibitory effect of wheat grain, fermented wheat grain products, red pepper powder and kochujang was examined in AGS human gastric adenocarcinoma cells. The kochujang samples were prepared by mixing red pepper powder and each fermented wheat grain products, such as first fermented wheat grain (FFWG), second fermented wheat grain (SFWG) and final fermented wheat grain (FiFWG). The methanol extract of FiFWG showed the highest growth inhibitory effects. In order to investigate the effects of fermented wheat grain products at each stage of fermentation on anticancer activity, the kochujang prepared with red pepper powder and each of FFWG, SFWG and FiFWG were fermented until reaching pH 5.1. The kochujang adjusted to pH 5.1 by fermentation increased the growth inhibitory effect; however, the kochujang prepared with FiFWG showed the highest effect. Increased fermentation time increased the growth inhibitory effect of kochujang when prepared with FiFWG. These results suggested that the anticancer effect of the kochujang on the gastric cancer cells was affected by the fermentation periods of the wheat grains. The well-fermented end products of the wheat grains seem to be one of the major components that showed anticancer activity of kochujang.

• 한국식생활문화학회지
• /
• 제30권2호
• /
• pp.220-226
• /
• 2015

This study was to conducted to investigate the antioxidative activity of 70% ethanol extracts of kiwi of three different colors (gold, green and red) by measuring DPPH, ABTS radical scavenging activity, tyrosinase inhibitory effect, metal chelating effect, reducing power, and nitrite scavenging activity. Total polyphenol contents were: gold kiwi, 3.09 mg GAE/g, green kiwi 2.71 mg GAE/g, and red kiwi 4.59 mg GAE/g, respectively. Red kiwi showed higher antioxdidant activity than gold and green kiwi. DPPH and ABTS radical scavenging activity, and nitrite scavenging activity of red kiwi exhibited 94.83, 99.57, and 97.88%, respectively, at a concentration of 20 mg/mL, which were equal to those of ascorbic acid (positive control). Metal chelating effect of red kiwi was superior to that of ascorbic acid. Therefore, the availability of red kiwi will be increased in the field of functional material for food additives and value added products.

• 한국식생활문화학회지
• /
• 제35권5호
• /
• pp.478-482
• /
• 2020

We evaluated the protective effects of cricket methanol extract (CME) on ultra-violet B (UVB)-induced photoaging in human skin fibroblasts. The fibroblast cells were treated with 10, 50, and 100 ㎍/mL of CME for 24 h, and then exposed to UVB (30 mJ/㎠). CME showed a dose-dependent cytoprotective effect without any observable cytotoxicity. CME reduced UVB-induced production of reactive oxygen species (ROS) by 34.4, 34.9, 40.6% at concentrations of 10, 50, 100 ㎍/mL respectively. CME inhibited the release of matrix metalloproteinase (MMP) 1 and 3. Furthermore, CME also reduced UVB-induced collagen degradation in the fibroblast cells. Taken together, our data suggests that CME has a significant protective effect on UVB-induced photoaging of the skin. This benefit occurs through multiple mechanisms. The results also suggest a potential role for CME as an ingredient in anti-photoaging cosmetic products in the future.

• 한국식생활문화학회지
• /
• 제35권2호
• /
• pp.215-223
• /
• 2020

Ganjang and doenjang are known as major fermented soy-based foods in Koreans. Current investigations have proved that fermented soybean foods impart anti-cancer, anti-obesity, and anti-diabetic effects. The aim of this study was to evaluate the anti-cancer activities of commercialized soy food, Ganjang, as a function of aging period. The test groups were classified into four time periods-short (under 5 years, S group), mid (under 10 years, M group), long (under 15 years, L group), and eternal (over 15 years, E group). The anti-cancer effects of Ganjang were determined by cell cytotoxicity assay of three types of cancer cell lines and splenocyte proliferation assay. Besides these assays, we also analyzed NK cell activity for cancer immunotherapy. The results show that the anti-cancer effect increased in the S and M period aging groups for all three cancer cell lines. Interestingly, similar to the anti-cancer result, splenocyte proliferation and NK activity showed the highest effect in the S and M groups. In contrast, Japanese ganjang-treated (JG1, JG2) groups and E group showed significantly reduced splenocyte proliferation. Collectively, these results suggest that the short and middle periods of traditional fermented Ganjang might have potential anti-cancer activities.

• 한국식품영양과학회지
• /
• 제29권1호
• /
• pp.161-167
• /
• 2000

Methanol extract and its fractions of Polyozellus multiplex inhibited the growth of several tumor cell lines and its water fraction showed a higher cytotoxicity effect on the human gastric carcinoma cell, SNU668 than on the other cell lines. The glutathione S-transferase (GSH) content was decreased by MNNG treatment but increased by adding Polyozellus multiplex water fractions. Also the activities of GSH and superoxide dismutase were increased by more the treatment of Polyozellus multiplex water fractions than by N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) alone. Polyzellus multiplex water fraction cased significant reduction in the proliferating cell unclear antigen (PCNA) labelling index in the glandular stomach epithelium as compared with the value of MNNG alone.

• 한국축산식품학회지
• /
• 제38권6호
• /
• pp.1160-1167
• /
• 2018

The objective of this study was to evaluate the composition, pH, titratable activity, microbial properties, and antioxidant effect of yogurt using ginseng extract powder (GEP), Lactobacillus plantarum NK181, and Streptococcus thermophilus as the starter culture. Different concentration of GEP (0%, 0.5%, 1%, 1.5%, and 2% (w/v)) were used in the yogurt. During yogurt fermentation, pH was decreased; however, titratable acidity and viable cell counts were increased. The addition of GEP to yogurt led to a decrease in moisture content and an increase in the fat, ash, and total solids content. The antioxidant effect using 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging, ${\beta}$-carotene bleaching, and ferric reducing antioxidant power (FRAP) assay gradually increased with added GEP. Overall, yogurt fermented with 1% GEP was acceptable in terms of cell viability and antioxidant effect. These results might provide information regarding development of ginseng dairy products with enhanced antioxidant activities and probiotic properties.

• 한국축산식품학회지
• /
• 제41권2호
• /
• pp.261-273
• /
• 2021

Leuconostoc mesenteroides H40 (H40) was isolated from kimchi, and its probiotic properties and neuroprotective effect was evaluated in oxidatively stressed SH-SY5Y cells. H40 was stable in artificial gastric conditions and can be attached in HT-29 cells. In addition, H40 did not produce β-glucuronidase and showed resistant to several antibiotics. The conditioned medium (CM) was made using HT-29 cells refined with heat-killed probiotics (Probiotics-CM) and heated yogurts (Y-CM) to investigate the neuroprotective effect. Treatment with H40-CM not only increased cell viability but also significantly improved brain derived neurotropic factor (BDNF) expression and reduced the Bax/Bcl-2 ratio in oxidatively stress-induced SH-SY5Y cells. Besides, probiotic Y-CM significantly increased BDNF mRNA expression and decreased Bax/Bcl-2 ratio. The physicochemical properties of probiotic yogurt with H40 was not significantly different from the control yogurt. The viable cell counts of lactic acid bacteria in control and probiotic yogurt with H40 was 8.66 Log CFU/mL and 8.96 Log CFU/mL, respectively. Therefore, these results indicate that H40 can be used as prophylactic functional dairy food having neuroprotective effects.

• 동아시아식생활학회지
• /
• 제10권4호
• /
• pp.288-297
• /
• 2000

To understand the effect of radish on growth of food born microorganisms, mashedflesh radishes were extracted by using acetone and distilled water. Their effect was assayed by measuring the optical density of cultural broth of food born microorganisms. In the experiment, seven strains of yeast were used as the test organism. Acetone extract inhibited growth of the cells of L. plantarum, L. sake and Danmuji film yeast. Growth of the film yeast was drastically inhibited in the concomitant presence of 0.03% extract, while other microbes such as L. faecalis, P. pentosaceus, B/ subtilis and E. coli grew by succeeding cultivation for 4 to 8 hour after addition of the extract. Water extract, on contrast to acetone extract, at he concentrations of 0.1∼1.5% stimulated the growth of lactic acid bacteria. Culture of L. faecalis and L. sake showed an optical density higher than that of control by 40∼50 times. The effect was not so apparent against E. coli, S. aureus and Danmuji film yeast.