• Korean Journal of Food Science and Technology
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• 제50권3호
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• pp.331-338
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• 2018

The purpose of this study was to determine the optimum sterilization conditions for the production of retorted steamed egg using response surface methodology. Sterilization processes for eighteen conditions using varying sterilization temperature ($X_1$), time ($X_2$), and method ($X_3$) as the independent variables were carried out through a $3^2{\times}2$ experimental factorial design. Quality evaluations after sterilization included measurements of $F_0$ value ($Y_1$), peak stress ($Y_2$), pH ($Y_3$), color value ($Y_{4-6}$), and organoleptic test [preference for appearance ($Y_7$), overall acceptability ($Y_8$), and preference for texture ($Y_9$) and egg taste ($Y_{10}$)]. Dependent variables ($Y_{1-10}$) of eighteen conditions were more affected by temperature and time than by the sterilization method. Eight factors were selected among the dependent variables as significant factors related to the quality of the steamed egg. Finally, by establishing an optimum range of each dependent variable and contour analysis, the optimum sterilization conditions for the production of steamed egg were determined to be $120^{\circ}C$ for 25 min using a 2-step sterilization process.

• Health Policy and Management
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• 제11권2호
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• pp.85-122
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• 2001

This study compared and analyzed the effect of income-redistribution, collecting data on the basis of the estimated details of insurance contribution and individual money wage lists for each one year before and after the combination of medical insurance program for industrial workers, by systematic sampling, extracting 4,160 families(14,764 people) among people applied to medical insurance program for self employees in Taegu City on the basis of Oct. 1st in 1998 with 227 associations of medical insurance program for self employees and medical insurance program for government employees and private school teachers combined, comparing the effect of income redistribution of before and after the combination of medical insurance program for self employees. The insurance contribution by household after the combination of medical insurance program for self employees showed the increase rate of average 20.9%, among them households of 68.8% increased and 31.2% decreased. The effect of income-redistribution was more positive because the degree of inequality was more deepened from 0.64 of the before-combination to 0.45 of the after-one in decile distribution ratio, from 0.26 to 0.34 in Gini -coefficient. Decile distribution ratio on the basis of insurance benefits by household was from 0.09 in the before-combination to 0.14 in the after-one, Gini-coefficient from 0.16 in the before-combination to 0.57 in the after-one was a little lowered. And decile distribution ratio of insurance benefits on the basis of insurance contribution was higher from 1.08 in the before-combination to 1.23 in the after-one, concentration index was a little lowered from 0.14 to 0.11, the effect of income-redistribution was improved in the phase of insurance benefits. The income-transfer rate of medical insurance program for self employees (the occupied rate of insurance benefits/ the occupied rate of insurance contribution) showed a lower trend in all of the before and after-combination towards upper classes, it was known that the income-transfer rate was higher from 1st degree to 7th degree in the after-combination in comparison with the before-one, but the effect of income¬redistribution was high because the income-transfer rate was lowered from 8th degree to 10th degree. The rate of medical insurance benefits (insurance benefits/ insurance contribution) increased from 0.79 in the before-combination to 1.07 in the after-one, and showed over 1.0 under 3th degree before the combination, but all of it was higher than 1.0 under 7th degree after the combination, the after-combination was more improved than the before-one in view of the rate of insurance benefits. As the result of above, on the basis of Oct. 1st in 1998 that 227 associations of medical insurance program for self employees was combined into one, we could say that the equality of imposing medical insurance contribution was more re-considered in the after-combination than in the before-one. But this study analyzed with classes divided, anyway, on the basis of insurance contribution, we have limit in explaining the correct effect of income-redistribution, because it was not analyzed according to classes of income, though it helps to analogize the effect of income-redistribution. So there must be analysis about the effect of income-redistribution, on the basis of the system, building up the system to grasp the correct income of the insureds of medical insurance program for self employees.

• Journal of Hospice and Palliative Care
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• 제4권1호
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• pp.26-40
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• 2001

Purpose : The purpose of this study was to develop task guidelines for hospice team members. The task range of all personnel who work for hospice institutions was identified, and a tool describing roles and tasks of the hospice team members was developed based on review of related literature, both domestic and international. Methods : The content validity of the tool was assured by an expert panel through two phases of discussion. The first phase of the study included a survey conducted from December 1999 to January 2000 for a total of 126 hospice experts and practitioners affiliated with domestic hospice institutions. The second phase of the study included 35 subjects. The data were collected using a survey when the investigators visited each hospice institution. The data were analyzed using descriptive statistics. Results : 1) In the first phase of the study, all items scored over 80 points in CVI were selected as the roles and tasks of hospice coordinator, nurse, pastor, social worker, pharmacist, nutritionist, therapist, volunteer, and nurse aide. However, two items were excluded because they scored below 80 points: an item describing eligibility of a physician, a person who has a license for managing anesthetic agents was scored as 78.6 points, and an item describing the eligibility of the team leader of volunteers, a person educated at the graduate level was scored as 74.7 points. 2) In the second phase of the study, all items scored over 80 points in CVI were selected as the roles and tasks of hospice nurse, pastor, social worker, pharmacist, nutritionist, therapist, volunteer, and nurse aide. Of the roles of the hospice coordinator, however, the item scored as 77.9 points, assess and plan a patients physical, social, emotional, and spiritual status, and, of the roles of the team leaders of volunteers, the item scored as 78.6, attend a team meeting once a week and participate in building an standard nursing plan for patients were included in the tool since they scored over 80 points in the first phase of the study. Conclusion : The developed task guideline should be further modified and revised based on the findings of a preliminary application in the actual field. There is also a need of continuous research for developing more culturally-appropriate task guidelines for hospice team members.

• Journal of Hospice and Palliative Care
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• 제14권4호
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• pp.212-217
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• 2011

Purpose: Since 2005, the Ministry of Health & Welfare has provided financial support to promote palliative care for terminal cancer patients. We analyzed how palliative care facilities used the funding between 2006 and 2010. Methods: Frequency analysis was conducted by the item of expenditure based on fiscal reports of the palliative care facilities. Linear regression analysis was performed to examine a trend over time. Kruskal-Wallis test and Wilcoxon rank-sum test were used to compare expenditure items, the number of provision of financial support and type of palliative care units. Results: About a half of the fund was spent to pay care givers salary, improve facilities and purchase equipment regardless of the year, the number of financial support provided or facility type. By year, the operation cost for palliative care program and the education cost for health care workers have significantly increased in linear regression analysis (P<0.01). However, the amount of financial support for the low income group has decreased over years (P=0.024). This trend was affected by evaluation criteria and weight. Conclusion: The government aid for palliative care units has been used to improve facilities and equipment. Moreover, desirable changes were noted such as a higher portion of expenses for program operation and care giver training to enhance the quality of care. However, the evaluation criteria need to be adjusted to prevent any further decrease in the support provided to the low income group.

• Horticultural Science & Technology
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• 제33권1호
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• pp.47-54
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• 2015

This research was conducted to investigate the changes in moisture retention capacities of expanded rice-hull (ERH)-based root media and their influences on the growth of mother and daughter plants in vegetative propagation of 'Seolhyang' strawberry. The proportion of water at the container capacity of ERH medium was in the range of 20 to 23%. This range was lower than the 60 to 66% of strawberry-specialized medium, the 30 to 34% of soil mother material (SMM) and the 30 to 35% of loamy sand. The moisture content of ERH was reduced to 10 to 12% at 8 hours after irrigation, and there were large variations among replications of ERH medium. Among four kinds of root media formulated to contain ERH, the medium of ERH + coir dust (CD) (55 + 45%, v/v) had 26.5 and 32.5% water contents at 20 and 40 days after irrigation to daughter plants, respectively. The m edia o f ERH + sandy loam (S L) and E RH + S MM showed similar trends i n moisture r etention. The pH and EC i n the all root media tested were in the range of 6.7 to 7.1 and 0.03 to $0.08dS{\cdot}m^{-1}$, respectively. The pHs and ECs measured at 20 and 40 days after irrigation were not significantly different in each root medium. Among the root media formulated to contain ERH, the growth of daughter plants was the highest in the treatment of ERH + SL (55 + 45%, v/v). As the blending rate of coir dust was elevated in the ERH + CD media, moisture retention capacity increased gradually, but the growth of daughter plants became worse even though the medium showed higher moisture retention capacity than other root media tested. The growth of roots and aboveground tissues of daughter plants deteriorated in the root media formulated by blending ERH + perlite (PE) at various ratios. The results of this research suggest the optimum formulations of root media and management of moisture content in raising of strawberry daughter plants when ERH is a component of root media.

• Horticultural Science & Technology
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• 제33권1호
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• pp.70-82
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• 2015

This study was conducted to establish an efficient screening system to identify melon resistant to Fusarium oxysporum f. sp. melonis. F. oyxsporum f. sp. melonis GR was isolated from infected melon plants collected at Goryeong and identified as F. oxysporum f. sp. melonis based on morphological characteristics, molecular analyses, and host-specificity tests on cucurbits including melon, oriental melon, cucumber, and watermelon. In addition, the GR isolate was determined as race 1 based on resistance responses of melon differentials to the fungus. To select optimized medium for mass production of inoculum of F. oxysporum f. sp. melonis GR, six media were tested. The fungus produced the most spores (microconidia) in V8-juice broth. Resistance degrees to the GR isolate of 22 commercial melon cultivars and 6 rootstocks for melon plants were investigated. All tested rootstocks showed no symptoms of Fusarium wilt. Among the tested melon cultivars, only three cultivars were susceptible and the other cultivars displayed moderate to high resistance to the GR isolate. For further study, six melon cultivars (Redqueen, Summercool, Superseji, Asiapapaya, Eolukpapaya, and Asiahwanggeum) showing different degrees of resistance to the fungus were selected. The development of Fusarium wilt on the cultivars was tested according to several conditions such as plant growth stage, root wounding, dipping period of roots in spore suspension, inoculum concentration, and incubation temperature to develop the disease. On the basis of the test results, we suggest that an efficient screening method for melon plants resistant to F. oxysporum f. sp. melonis is to remove soil from roots of seven-day-old melon seedlings, to dip the seedlings without cutting in s pore s uspension of $3{\times}10^5conidia/mL$ for 30 min, to transplant the inoculated seedlings to plastic pots with horticulture nursery media, and then to cultivate the plants in a growth room at 25 to $28^{\circ}C$ for about 3 weeks with 12-hour light per day.

• Horticultural Science & Technology
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• 제34권3호
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• pp.442-452
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• 2016

Clubroot caused by Plasmodiophra brassicae Woron. is one of the most important diseases in Brassica crops worldwide. To investigate resistance of cabbage to disease caused by P. brassicae isolates, we evaluated development of clubroot on commercial clubroot resistant (CR) and non-CR cultivars, a CR line, and $F_3$ lines from a cross between a CR line and a non-CR line using several isolates of P. brassicae. Four P. brassicae isolates (DJ, HN1, GN1, and YC) were used to measure development of clubroot on 16 non-CR cabbage cultivars that have been commercialized in Korea. Although four P. brassicae isolates induced similar disease severity on non-CR Chinese cabbage, these isolates exhibited different virulence on the cabbage cultivars. The YC isolate was the most virulent, followed by the GN1, HN1, and DJ isolates. Despite differences in virulence of the isolates on the cabbage cultivars, a CR cabbage line 'YCR478' and two CR cabbage cultivars showed high resistance to 12 P. brassicae isolates including DJ, HN1, GN1, and YC. When three isolates (YC, GN1, and DJ) were inoculated onto 107 $F_3$ lines that were derived from a cross between 'YCR478' and a susceptible cabbage line 'C1176', our results showed that 89, 33, and 6 of $F_3$ lines were susceptible to YC, GN1, and DJ isolates, respectively. In aspects of resistance, 6, 36, and 67 of $F_3$ lines exhibited resistant responses to YC, GN1, and DJ isolates, respectively. Taken together, these results suggest that resistance of cabbage to clubroot is likely affected by the virulence of P. brassicae isolates.

• Horticultural Science & Technology
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• 제33권5호
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• pp.772-783
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• 2015

This study focuses on horticultural activities using colorful food to reduce diets unbalanced in vegetables and to increase emotional intelligence. Horticultural activities using colorful food vegetables were based on 'Health in Daily Life' in the '7th Kindergarten Curriculum'; to improve the dietary habits of the young children, the program was also linked with a parents' education program. The research was conducted with a total of 70 children from classes for four-year-olds in three child-care centers located in Seoul. The horticultural activities based upon nutrition education included activities using colorful food vegetables and nutrition education. For the nutrition education group, only nutrition education was provided, while neither horticultural activities nor nutrition education were provided to the control group. The study was conducted from September to December 2011. A total of twelve sessions were conducted once a week for 60 minutes each. According to the result, after the horticultural activities with colorful food vegetable were conducted, both the nutrition education group and horticultural activity & nutrition education group showed improvements in 'Nutrition Knowledge' compared to the control group. Regarding 'Unbalanced Diet Behaviors', the horticultural activities & nutrition education group showed meaningful decreases compared to the control group. Moreover for preference of fruits and vegetables, the horticultural activities & nutrition education group revealed meaningful improvements. In conclusion, colorful food vegetable horticultural activity could be an effective approach to resolve the imbalance of health caused by unbalanced diets as children who participated in the colorful food vegetable horticultural activities continued to respond spontaneously to the colors of vegetables and fruits and showed joy and kept voluntarily eating them.

• Journal of the Korean Society of Food Culture
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• 제3권2호
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• pp.187-195
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• 1988

In accordance with the rapidly growing number of street food service without a registration, a study was undertaken to determine the present state of food service by the covered wagon bar, through an investigation in Jamwondong, around the south gate market and Kangnam subway station, in Seoul, between July 25th and August 25th of 1987. The survey was comprised of three parts: 1) foodservice operation in covered wagon, 2) personal and food handling hygiene, 3) food behaviors of customers. A total of 54 covered wagon bars, consisting of 51.8% mobile bars and 48.2% non-mobile bars, operating in the above three locations, were investigated. Survey results show non-mobile covered wagon bars to be more popular among persons in their thrities and fourties than among teens or the elderly; also among males than females; among company employees and college students than others. Seventy five percent of the mobile covered wagon bars served snack type foods and others served wine and foods for wine, in contrast to hundred percent of the non-mobile covered wagon bars served wine and foods for wine. The survey found many problems of hygiene, in method of food purchasing, menu planning, food preparation, dish washing treatment of leftovers and water supply, as well as personal hygiene. However, customers prefer the casual and popular atmosphere at the counter of the covered wagon bar. Finally, the study emphasizes a need for better operation of covered wagon bar, improvement of food stuff handling and the way of food services and personal hygiene. A change of the registration system from the illegal operation are urgently needed for better quality food services of covered wagon bars.

• Journal of Food Hygiene and Safety
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• 제30권3호
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• pp.281-288
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• 2015

Vibrio is a genus of Gram-negative, curved, halophilic, and non-spore-forming bacteria. Some of the Vibrio species, such as V. cholerae and V. parahaemolyticus, often contaminate seafood products and occasionally cause human diseases when the seafood products are ingested. A total of 24 Vibrio strains were isolated from shrimp samples on Thiosulphate citrate bile salt sucrose (TCBS) media in this study. All of the 24 isolates were confirmed to belong to the genus Vibrio by using 16S rRNA gene sequence analyses. Vitek 2 system and species-specific polymerase chain reaction (PCR) methods were used to further identify a total of 29 Vibrio strains at the species level, including the 24 shrimp Vibrio isolates and five Vibrio reference strains. The specificities of the two methods to identify Vibrio strains at the species level were compared in this study. The species-specific PCR method was designed to detect five different Vibrio species, such as Vibrio cholerae, Vibrio parahaemolyticus, Vibrio vulnificus, Vibrio alginolyticus, and Vibrio mimicus. From the 24 Vibrio shrimp isolates, the Vitek 2 system method could identify 15 (62.5%) strains as Vibrio species and 7 (29.2%) strains as non-Vibrio species, but could not identify the rest 2 (8.3%) strains. But species-specific PCR method could identify 16 (66.7%) strains as Vibrio species and could not identify the rest 8 (33.3%) strains. Among the 24 Vibrio shrimp strains, these two methods could unanimously identify 7 (7/24, 29.2%) strains (2 V. parahaemolyticus, 4 V. alginolyticus, and 1 V. mimicus). Considering that such different identification results were obtained using the two different methods in this study, identification method for Vibrio species must be carefully chosen.