• Journal of the Korean Society of Food Science and Nutrition
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• v.41 no.9
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• pp.1265-1273
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• 2012

The purpose of this study was to investigate the BMI, intake of snacks, and perceptions and use of food and nutrition labels by middle school students (144 boys and 189 girls) in Chuncheon area. The average height and weight of boys were $171.0{\pm}6.4$ cm and $61.0{\pm}11.4$ kg, respectively, whereas those of girls were $160.0{\pm}4.8$ cm and $50.8{\pm}6.6$ kg, respectively. Average body mass index (BMI) of boys and girls were $20.8{\pm}3.3$ and $19.8{\pm}2.4$, respectively (p<0.01). Dietary intake attitude score of girls ($34.39{\pm}5.66$) was higher than that of boys ($33.92{\pm}5.40$) (p<0.05). Subjects bought and ate snacks 1 to 3 times per week (40.2%) by themselves, and most consumed snacks were cookies (23.1%), instant noodles (16.2%), ice cream (13.2%), and candy and chocolates (13.2%). The most important factor in purchasing of snacks was 'taste' ($4.49{\pm}0.67$). When subjects bought processed foods, the rates of reading food labels was 86.6%. The most important factor of the food labels was 'expiration date' (42.9%). The degree of reading food labels on processed foods by girls ($22.70{\pm}5.72$) was higher than that of boys ($20.96{\pm}5.35$) (p<0.01). Of the 13.2% of subjects that did not read food labels, the reason why was that they were not interested (50.0%). Of the 78.4% of subjects that read nutrition labels, the most important component of the nutrition labels was 'calories' (75.9%). The main reason for reading nutrition labels was 'to control weight' (45.6%). In general, use of food labels correlated positively with dietary intake attitude score (p<0.05) and use of nutrition labels (p<0.01). Using multiple regression analysis, we found that 'usefulness of dietary life' was the most significant variable that affects the importance of food and nutrition labels. Therefore, development of an educational program on food and nutrition labels for adolescents will be effective in improving dietary life.

• Journal of Food Hygiene and Safety
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• v.22 no.4
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• pp.323-331
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• 2007

This study was designed to estimate self-life of Kimbab and sandwiches marketed in convenience store. While the 12 different type of Kimbab (n=6) and sandwiches (n=6) were kept at $10^{\circ}C$ for 72 hours, quality changes including volatile basic nitrogen, aerobic plate count, pathogens detection and sensorial property was monitored, and effective quality indicators were selected. Volatile basic nitrogen, indicator for protein deterioration was slightly increased during storage periods in all samples. E. coli, Staphylococcus aureus, Salmonella spp. and Vibrio parahaemolyticus were not detected from any of samples. Change of aerobic plate count of Kimbab and sandwiches were increased moderately but increased dramatically after 48 hours of storage. Overall acceptability were maintained over 5, purchasing power limit, for 40 hours in 4 general Kimbab, 48 hours in 2 samgak Kimbab and 42 hours in 2 sandwiches. Shelf-life of each item was calculated from regression equation between reference limit from effective quality indicators, aerobic plate count and sensory property, and storage period. Estimated shelf-lives of general Kimbab were $15{\sim}33$ hours, samgak Kimbab were 32 hours and sandwiches were $27{\sim}30$ hours at $10^{\circ}C$ refrigerated condition.

• Korean Journal of Food Science and Technology
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• v.52 no.1
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• pp.1-10
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• 2020

The present study identified the restrictions on the use of sous-vide products in the Korean HMR market for small and medium-sized manufacturing companies. A detailed literature review revealed that the HMR market in Korea is close to saturation. Notably, the technologically advanced products produced using sous-vide seem to display significant potential to overcome market saturation. The sous-vide method differs from conventional cooking techniques and is characterized by maintenance of food texture along with flavor enhancement. However, due to the unfamiliarity of the manufacturers with this method and the unclear food safety regulations, mass food manufacturing companies do not agree on using this method; hence, sous-vide production is usually undertaken by small/medium sized companies catering primarily through online marketing portals. This study highlights the various restrictions to the implementation of sous-vide production, and discusses several practical implications of sous-vide production that would help users of this technique enter the HMR market.

• Culinary science and hospitality research
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• v.19 no.4
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• pp.211-230
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• 2013

The purpose of this study was to investigate importance and performance about the quality attributes of bean coffee and instant coffee for the Koreans and the Mongolians. The survey was conducted in Seoul and Gyeonggi Province, Korea and in Ulaanbaatar, Mongolia from April to May, 2012. The questionnaire was distributed to 380 Koreans and 380 Mongolians, and 253 and 250 copies were collected from the Koreans and the Mongolians, respectively, for statistical analyses. For the importance-performance analysis(IPA), 14 quality attributes of bean coffee and instant coffee were investigated. The main results of this study were as follows. In the importance and performance comparison about the bean coffee quality, taste, aroma, quantity, price, hygiene, freshness and shelf life were more important to the Koreans than to the Mongolians. On the other hand, nutrition and ingredient were regarded as more important attributes for the Mongolians. Also, price, nutrition, temperature and ingredient were better performance to the Mongolians than to the Koreans. In the importance and performance comparison about the instant coffee quality, quantity and price were more important to the Koreans than to the Mongolians. However, nutrition and temperature were more important to the Mongolians. Moreover, nutrition, temperature, variety and freshness were better performance to the Mongolians than to the Koreans. According to the IPA results of 14 quality attributes of bean coffee, the selection attributes with high importance but low performance were price and shelf life for the Koreans, while nutrition, hygiene and ingredient for the Mongolians. For instant coffee, the selection attributes with high importance but low performance were hygiene and concentration for the Koreans, while concentration and ingredient for the Mongolians.

• Journal of Food Hygiene and Safety
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• v.23 no.4
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• pp.330-337
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• 2008

Betarich carrots were washed at various hypochloric acid(HCA) concentration and steeping time and packed in PE bag keeping at $8^{\circ}C$ for 12 days, in order eventually to examine microbiology, firmness, surface color, whiteness index(WI) and sensory quality. It was found that total bacterial counts at T-II and T-III with the 3 minute steeping were $4.37{\pm}0.19\;\log\;CFU/g$ and $4.27{\pm}0.13\;\log\;CFU/g$ respectively, showing slight decrease compared to control condition. E. coli was not detected at all treatments but less coliforms were detected at the 8-day treatments of T-II and T-III. Treatment of 3-minute steeping showed smaller reduction in firmness than that of I-minute steeping at 12-days, and T-1 (T-3) had the largest (smallest) reduction among them. It was also found that during the treatment the L-value showed decreasing trend, but the parameter a- and b-value showed increasing trend. WI increased, and its change was small with the increase in HCA concentration. The sensory quality check after 8 day storage showed that evaluation of the off-flavor appeared to be significantly high (p<0.05) at both non-treatment and HCA treatment. On the basis of the results above, it is likely to be more effective to prolong the period of circulation of beta rich carrots if you use HCA over 50 ppm for washing betarich carrots. This study will contribute to improve safety and quality in circulation of beta rich carrots.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.10a
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• pp.101-102
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• 2001

창란젓갈은 최근 염도 8％ 이하의 양념젓갈 형태가 보편화되어, 일정 중량의 규격포장으로 유통되는 사례가 많은데 대표적인 포장 형태는 병과 필름포장을 들 수 있다. 그러나 창란젓갈을 비롯한 젓갈류 대부분의 포장은 병포장보다 상대적으로 단가가 낮은 필름포장 재질인PE(low density polyethylene)를 사용하고 있는데, 이 경우 숙성이 끝난 정상적인 젓갈 제품을 충진하더라도 PE 필름의 가스투과도가 높아 젓갈 냄새가 누출되어 나옴으로서 소비자에게 불쾌감을 주는 경우가 많다. (중략)

• Proceedings of the Korean Society of Community Living Science Conference
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• 2009.09a
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• pp.81-81
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• 2009

중학교 식생활 단원 교육은 신체적 성장이 왕성한 청소년기에 접어진 학생들이 올바른 식생활을 하여 건강 유지 및 정상적인 성장발달을 하는데에 꼭 필요한 내용이다. 그리하여 본 연구에서는 학생들이 식생활단원 교육을 통해 교육내용의 활용정도나 전반적인 식생활 태도에 미치는 영향을 조사하고자 대전지역에 소재하는 4개 중학교 3학년 학생을 대상으로 2008년 12월 5일~16일까지 설문지조사를 실시하였다. 조사대상자의 성별은 여학생이 48.9%, 남학생이 51.1%이고 학생들의 부모의 연령은 40-49세가 각각 81.4%, 86.7%를 차지하고 부모의 직업에서 아버지는 사무직(34.4%)이 가장 많고 어머니는 가정주부가 44.5%로 가장 많았다. 부모의 학력은 대부분 고졸이상이며 가족형태는 핵가족이 90.5%이고 부모의 한 달 총수입은 500만 원 이상이 32.6%로 가장 많았다. 식생활단원 교육 후에 식생활에 대한 관심정도는 '관심이 생긴 편이다'(36.4%), '그저 그렇다'(33.8%)가 많았고 남 여 학생의 경향이 비슷하였다. 교육 후 가장 변화된 점은 '간단한 조리를 할 수 있게 되었다' 가 38.6%로 가장 높은 반면 '아무 변화가 없다'도 34.4%나 되었다. 식생활 태도에서는 5점 likert 점수에서 '식사시간이 규칙적이다'(3.36), '골고루 섭취한다'(3.39), '식사준비를 돕는다'(3.07)에서 보통 이상의 점수로 양호한데, 한편 '내가 먹은 음식의 영양분과 열량에 관해 알고 있다'가 2.57로 잘 모르는 편이고 '다이어트 보조음식이나 약을 먹는다'가 1.48로 그렇지 않은 편이었다. 식생활단원의 활용도에서는 5점 likert 점수에서 '성분과 유통기한을 확인한다'(3.93), '간단한 음식을 직접 만들 수 있다'(3.80)가 높은 점수이었고, 남학생이 여학생보다 '성분과 유통기한 확인한다'(P<.01), '조리기구는 안전하고 위생적으로 사용할 수 있다'(P<.05)에서 유의적으로 높았다. 이 활용도에 대한 학생들의 가정환경과의 상관성에서는 부모의 학력이 고졸 이상에서 중졸이하보다 유의적으로 높았고(P<.001), 부모의 직업의 경우, 아버지가 무직인 경우, 어머니가 가정주부인 경우에 직업을 가진 부모의 학생들에 비하여 유의적으로 활용도가 낮았다(P<.01). 부모의 한 달 총수입과의 상관성에서는 400~500만원 미만의 경우에 다른수준보다 유의적으로 활용도가 높았다(P<.05). 따라서 식생활단원 교육에 의해 변화가 없는 학생들도 상당히 많아 교육방법의 개선이 필요하며 그 활용도가 가정환경과 상관성이 있음을 파악할 수 있었다.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.25 no.3
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• pp.69-77
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• 2019

Agar-based nanocomposite films were prepared by incorporation of zinc oxide nanoparticles (ZnONP) and grapefruit seed extract (GSE). The composite films were characterized using FT-IR, UV-visible spectroscopy and thermalgravimetric analysis (TGA). The composite films showed light absorption peaks at 220 and 380 nm, characteristic for GSE and ZnONP, respectively. The UV-light transmittance of the agar film was markedly reduced from 54.4 ± 1.3% to 5.8 ± 2.5% with little sacrifice of transparency when 3 wt% ZnONP and 5 wt% GSE were added. The mechanical and water vapor barrier properties increased slightly though they were not significant statistically by the addition of ZnONP and GSE. The nanocomposite films showed stronger antibacterial activity against L. monocytogenes than E. coli O157: H7 and the antibacterial activity was affected by bacterial types as well as concentrations of ZnONP and GSE. The nano-composite film incorporated with 3 wt% of ZnONP and 5 wt% of GSE exhibited strong antibacterial activity against Listeria monocytogenes and E. coli O157: H7. The results indicate that 3 wt% of ZnONP and 5 wt% of GSE are the optimal concentrations for producing functional agar/ZnONP/GSE composite films.

• Journal of Life Science
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• v.26 no.12
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• pp.1438-1445
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• 2016

Yeast can be post-contaminated by the equipment, producer, or air, and this can degrade yogurt quality. This study aimed to demonstrate the yeast inhibiting effect in fermented milk by adding Lactobacillus paracasei and Lactobacillus rhamnosus along with current fermenting lactic acid bacteria such as Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus. A certain amount of yeast was added to fermented milk samples that were soon after stored at variable temperatures, and the number of yeast cells was counted periodically. The swelling phenomenon caused by the gas produced by the yeast in fermented products was also observed. In the two experiments, compared to the control, the L. paracasei- and L. rhamnosus-added-groups showed much slower rate of yeast appearance and lower frequency of swelling phenomena. This suggests that using a mixture of L. paracasei and L. rhamnosus in fermented milk inhibits the growth of yeast. Furthermore, if the products are stored at $10^{\circ}C$, post-acidification is rarely seen in the experimental group compared to the control group. This means that the organoleptic flavor can be kept consistent from the production day till the expiration day, resulting in improved organoleptic quality for customers. In other words, the use of L. paracasei and L. rhamnosus in fermented milk will result in the following positive effects: improvement in storage stability by delaying yeast appearance, increase in quality consistency by inhibiting post-acidification, and improved organoleptic quality by enhancing texture and flavor.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.148-151
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• 2017

본 논문에서는 실생활에서 식품을 취급하는 대학생 및 독립거주자를 위한 식품 안전관리 시스템을 설계하고 이를 구현하였다. 사용자는 실시간 등록 및 스캔을 통하여 신뢰성 있는 식품관리가 가능하고 알람을 통하여 유통기한의 경과여부를 알 수 있도록 구현 하였다. 본 논문에서 구현한 어플리케이션의 사용으로 개인 생활건상 향상 및 경제적 절약효과를 기대하는 것이 가능하다.