Trichoderma reesei QM 9414를 이용한 섬유소 분해효소 생산조건에 관한 연구

김종민,류두영 한국미생물학회 1978 미생물학회지 Vol.16 No.4

In order to increase the productivity of cellulolytic enzymes, medium composition and culture conditions were studied. When cellulose powder (Avicel) supplemented with rice straw was used as carbon source, productivity of ${\beta}-glucosidase$ was increased by about 3 times compared with the runs with only cellulose powder as a carbon source. In this case no negative effects on the production of CMC enzyme activity and filter paper activity was found. For the production of celulolytic enzymes using T. reesei QM 9414, casitone was found to be a good nitrogen source compared with other sources studied, such as peptone, yeast extract, tryptone, and casein. The highest cellulase activity was attained when 0.3% glucose and 0.01% Tween 80 were supplemented to the standard medium of Rese. An adequate oxygen transfer rate was also found to be important to the cellulase fermentation and about 50 mmole of oxygen/liter/hour supported good cellulase biosynthesis during cellulase fermentation.

붓가는대로:김일성에게 띄우는 사신,재소자와 종교,산수유꺾어놓고,귀신이 곡할 일

이동렬,윤덕근,류두영,이만기 북한연구소 1987 北韓 Vol.- No.189

다양한 가공한 농산물을 활용한 육류대체식품개발의 특성 연구

안정엽,김윤순,문형주,류두영,장성용 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10

대체식품은 동물성식재료를 사용하지 않고 동물성 단백질급 원인 육류, 달걀, 생선 등과 같은 식품을 식물성 식재료 구성으로 재현해야 하므로 물성 및 영양소 구성에 많은 제한이 따른다. 육류 대체이지만 육류 모사식품이 아닌 식품/영양학적 소비자 니즈를 충족하는 제품 개발을 위해 여러 가지 농산가공식재료 사용이 검토되어야 한다. 또한 대체식품 개발 및 양산을 위해 더 많은 환경파괴와 자원낭비가 발생하는 것을 줄이는 제로웨이스트 방향으로 개선이 필요하다. 육류의 모사제품으로써 대체식품뿐만 아니라 다양한 식감과 풍미를 제공하는 현대인의 건강과 식생활을 고려한 대체식품의 정의가 필요하다. 본 과제는 현재 출시된 육류대체 식품에 주를 이루는 첨가물, 알레르겐으로부터 안전하며 국내 농산가공물을 활용하여 현대인이 필요한 단백질, 식이섬유와 미량원소를 제공하고 탄수화물 섭취를 줄이는 형태의 공급 가능한 대체 식품을 개발하고자 시도하였다. 농산가공물의 배합, 성형 후 이화학적 분석을 실시 평가하였다. 채식주의자뿐만 아니라 대사질환 회피설계, 단백질공급원이 필요한 일반소비자(노인, 다이어트 등)가 섭취할 수 있는 영양균형을 고려한 응용대체식품 개발을 검토하고자 하였다. 곡류 및 채소류 등의 농산가공물 활용이 활발해지면 신선농산물의 유통기한의 연장효과와 이로 인한 농가의 소득증대로 이어지는 대체효과도 가져올 것으로 기대한다.

순창지역특산물을 이용한 대사성질환 치유음식을 위한 레시피 개발

조계범,박상희,김양선,김정현,류두영,이호준,송경석,이규열,이희경,최현숙 한국식품영양학회 2017 한국식품영양학회 학술대회논문집(학술심포지움) Vol.2017 No.06

Effects of an Agro-Healing Activity Program on the Physiological Condition of Adults with Chronic Metabolic Diseases

장혜숙,유은하,정순진,김재순,류두영 인간식물환경학회 2019 인간식물환경학회지 Vol.22 No.4

This study was conducted to find out the effects of agro-healing activities and strolling on the physiological conditions of patients with chronic metabolic diseases. A total of 11 subjects participated in agro-healing activities, and their average age was 49.6±11.3. Changes in their salivary cortisol were compared and analyzed before and after participating in the agro-healing activity program, and it was found that the stress hormone decreased after participating in the program. Differences in brain wave between before and after participating in agro-healing activities and strolling were measured, and the ratio of alpha to high beta (RAHB) of subjects increased in most of the measured points after participating in agro-healing activities. In addition, the increase in the value in the temporal lobe (T3) that controls mortor skills and occipital lobe (O2) that controls visual functions indicates that the activities were effective in improving relaxation and stability. The relative low beta (RLB) power spectrum of subjects also statistically significantly decreased in the right occipital lobe (O2) that controls visual functions, the relative mid beta (RMB) and relative high beta (RHB) power spectrum decreased in the left temporal lobe (T3) and the right occipital lobe (O2). These results indicate that the activities were effective in improving relaxation under no stress and tension. The systolic and diastolic blood pressure of subjects after participating in agro-healing activities decreased from the prehypertension level to the normal level. These results indicate that horticultural activities and visual elements in healing farms, such as agro-healing activities and strolling, have positive impacts on patients with chronic metabolic diseases accompanied with diabetes or high blood pressure by increasing the brain activity and psycho-physiological conditions of participants.

The Effect of Police Officers’ Gardening Activity Level, Plant Preferences, and Key Variables on Resilience

장혜숙,강윤임,서정남,서경혜,안명숙,류두영 인간식물환경학회 2023 인간식물환경학회지 Vol.26 No.4

Background and objective: This study examines the effect of gardening activity level, plant preference, and key variablesof police officers on resilience. Methods: A total of 105 male and female respondents with an average age of 40.6 ± 9.3 were surveyed and analyzed. Results: Respondents with older age, higher education, higher average monthly income, and longer period of servicetended to show higher means of gardening activity level. Among the three factors of resilience (control, sociability, andpositivity), control was higher in the graduate school group than other groups, showing statistical significance. Tulipa spp. and Narcissus spp. showed the highest preferences among the 8 cultivars of flowering plants, followed by Iris spp., Dahliaspp., Allium giantium, Eustoma grandiflourm, Zantedeschia spp. > Lilium Oriental Hybrids. And, as a result of examiningthe preferences for 6 plant colors, yellow and green were preferred the most, followed by white, blue, orange, and then red,showing statistical significance. The resilience of police officers showed a positive correlation with gardening activity level,multidimensional calling, job satisfaction, and plant preferences, and a negative correlation with stress level and jobburnout, showing statistical significance. Regression analysis was conducted to determine the effect of gardening activitylevel, plant cultivar and color preference, multidimensional calling measure, job burnout, stress level, and demographicvariables (control variables) on resilience. The results showed that job burnout had the greatest impact on resilience. Theresults of this study suggest that it will be possible to increase the resilience effect for police officers with severe traumaby using mostly yellow plants when forming gardens in the streets or the workplaces of police officers, and also by usingTulipa spp. for spring. Conclusion: The resilience effect of the natural environment through the application of plants to police officers with severeoccupational trauma could improve the quality of life and relieve stress.

경찰공무원의 식물재배활동 수준이 스트레스 변화에 미치는 영향

장혜숙,강윤임,서정남,서경혜,안명숙,류두영 인간식물환경학회 2023 인간식물환경학회 학술대회 Vol.2023 No.2

경찰관의 식물재배활동 수준이 스트레스 변화에 미치는 영향

장혜숙,강윤임,서정남,서경혜,안명숙,류두영 한국화훼학회 2024 화훼연구 Vol.32 No.1

This study aimed to investigate the changes in stress levels before and after the creation of a flower landscape. Saliva samples were collected from 18 police officers located in Sunchang, with an average age of 37.1 ± 9.0. The total level of cortisol, a stress hormone after composition, was lower than before the creation of the flower landscape, and the gardening activity level increased, but it was not statistically significant. As a result of examining the stress level before and after the creation of the flower landscape (across four stages, with higher stages indicating higher stress levels), before the creation of the flower landscape, the first stage, (‘In a normal stress state, when the stress factor itself is not serious or accepted as good stress’) was 0%, but the first stage was raised to 11.1% after the creation. In consequence of evaluating the comfort, naturalness, and calming feelings using the SD method before and after the creation of the flower landscape revealed higher levels of pleasantness, naturalness, and calmness after the creation of the flower landscape, and this was statistically significant. In case of examining the correlation between the gardening activity level and the main variables according to the flower landscape, the gardening activity level and the level of stress, and the level of stress and sedation showed a negative (-) correlation, and a high positive (+) correlation between the gardening activity level and the sense of comfort, nature, and sedation of 0.5 or more. In conclusion, it was suggested that there would be a useful possibility to reduce high stress in high-risk groups and increase interest in plants or psychological stability effects through flower landscapes, which are natural environments.

Analysis of Plant Type and Color Preference and Psychological Assessment for Gardening Activities of Firefighters

장혜숙,유은하,김정희,정순진,김재순,류두영 인간식물환경학회 2020 인간식물환경학회지 Vol.23 No.5

Background and objective: This study investigated plant type and color preference and conducted a psychological assessment for gardening activities of firefighters in a high-risk occupational group. Methods: A survey was conducted on 117 firefighters aged 39.01±9.17 in Sunchang in March 2020 to examine their preferences in plant type and color and conduct a psychological assessment of firefighters on gardening activities. Results: For plant experience and awareness, plant-related event showed the highest score, followed by plant preference tendency and plant growing experience. The level of plant gardening activities was higher among older age and higher job position. As a result of examining the quality of life according to the demographic characteristic with WHOQOL-BREF (World Health Organization Quality of Life Assessment Instrument), it was found that the quality of life was higher among the 20s-30s than 50s, firefighter position than fire lieutenant or higher, those with higher average monthly income, and the singles group than married (p < .05). The administration group showed lower scores than the fire suppression group working in the field, showing statistical significance. Most firefighters showed high preference for herbal plants among the 12 types of flowering plants, in the order of Rosmarinus officinalis⟩Lavandula spp.⟩Mentha piperita, Calendula officinalis. Pelargonium spp. was preferred the least out of the flowering plants, Lycopersicon esculentum was preferred the most out of 12 types of vegetable plants, while Angelica acutiloba was preferred the least statistical significance. For the preference of plant colors, yellow was the most preferred color, followed by white, blue, orange, red, and green, showing statistical significance. For the psychological survey responses of emotion words toward 6 plants colors, it was found that ‘bright’ was the emotion felt most strongly by the white, yellow, and orange groups, ‘calm’ and ‘comfortable’ by the green and blue groups, and ‘fancy’ by the red group. Conclusion: The effect of agro-healing programs can be increased by using mostly yellow plants when creating indoor healing gardens at the workplaces of fire officials in a high-risk occupational group, and using herbal plants and Lycopersicon esculentum in the gardens for agro-healing activities.

Changes in the Saliva Cortisol Concentration and Blood Pressure of Patients with High Blood Pressure and Diabetes After Participating in Agro-healing Activities

장혜숙,유은하,정순진,김재순,김경미,류두영 인간식물환경학회 2019 인간식물환경학회지 Vol.22 No.5

This study was conducted to find out physical changes in the blood pressure and saliva cortisol of patients with high blood pressure and diabetes after participating in agro-healing activities. The saliva cortisol and blood pressure of 14 males and females aged 49.79±10.48 on average were measured after participating in agro-healing activities. The saliva collection system was used, and their satisfaction level for the program was also surveyed. Changes in the values before and after participating in the agro-healing activities were compared and analyzed. The cortisol concentration, a stress hormone, was reduced from 6.76nmol/L before the program to 4.86nmol/L after the program, down by 1.9nmol/L, which was a statistically significant difference (z=-3.170, p<.01). In addition, the cortisol concentration was gradually reduced through the entire program from Session 1 to Session 7. Changes in the blood pressure of subjects before and after participating in agro-healing activities were examined, and the total systolic and diastolic blood pressure continuously decreased after participating in agro-healing activities through the entire program from Session 1 to Session 7. Their systolic blood pressure was reduced statistically significantly (z=-1.947, p<.05). Also, participants' satisfaction was analyzed and it was found that more than 95% of participants answered 'satisfied' and 'very satisfied' with agro-healing activities. Therefore, these results indicate that agro-healing activities performed in the healing-farm had a positive impact on the cortisol concentration and blood pressure of patients with chronic diseases such as diabetes and high blood pressure. In addition, their high satisfaction for this program seemed to improve the psychological and physiological conditions of subjects.