This study was conducted to investigate the effects of sugars and stabilizers on the qualitative properties of frozen-yogurt. To prepare the yogurt mix, market milk was fermented using a commercial starter culture and sugars, trehalose and sucrose, and to prepare the ice cream mix, stabilizers, carboxy methyl cellulose (CMC) and guar gum, were used. The yogurt and ice cream preparations were mixed in a 1:1 (v/v) ratio to produce frozen-yogurt. Yogurt prepared using trehalose showed a significantly faster increase in pH, titratable acidity, and viable cell count than that prepared using sucrose (p<0.05). Ice cream prepared using guar gum showed a significantly higher viscosity and overrun than the CMC-stabilized preparation (p<0.05). Frozen-yogurt produced using the yogurt-trehalose mix and ice cream-CMC mix showed the highest hardness and lowest overrun. The melt-down rate of frozen-yogurt prepared with the yogurt-trehalose mix was significantly slow (p<0.05). However, there were no significant differences among the yogurt mixes in terms of changes in the viable cell count at 0, 7, 15, 30, and 45 days (p>0.05). In a sensory evaluation, most panels preferred the frozen-yogurt with sucrose over that with trehalose. However, it is expected that using trehalose with other sugar substitutions and guar gums in manufacture of frozen-yogurt have high potentiality than using sucrose and CMC, and it is considered that it could reignite the stagnant domestic milk processing industry.

This study was conducted to evaluate the effect on quality characteristics of grass-fed cow’s milk (GM) and conventional feed-fed cow’s milk (CM) with various conditions of non-thermal high-pressure processing (HPP) sterilization process. The sterilized GM and CM stored at 5℃ and 10℃ for 14 days and their quality characteristics during storage was evaluated. The pH and titratable acidity changes of HPP sterilized milk were maintained acceptable level 6.7-6.8, 0.14-0.16%, respectively. HPP sterilization was efficient in the reduction of total bacterial population to decrease the level of 4-7 Log CFU/ml compare to those of unsterilized control milk, and coliform bacteria was not detected in the HPP sterilized milk. Non-thermal HPP sterilization processing was not affected milk fatty acid composition compare to those of low temperature long time process (LTLT) sterilized milk. GM has lower ratio of n-3:n-6 unsaturated fatty acid level than those of CM. In the sensory evaluation of GM and commercial milk products, overall consumer acceptance of HPP sterilized GM was higher than CM and LTLT commercial product. In conclusion, the effects of HPP was comparable with conventional LTLT sterilization process to control undesirable microorganism in the milk products with minumal nutritional and chemical changes.

본 연구는 의원에 근무하는 방사선사의 보수교육에 관한 연구로 보수교육에 대한 만족도와 문제점을 분석하여 보수교육에서 개선하여야 할 사항을 연구하기 위해 실시하였다. 연구에 사용한 도구는 설문지로 2016년 11월 01일부터 2017년 04월30일까지 경남 창원에 소재하는 의원에 근무하는 방사선사를 대상으로 교육참석 및 방문을 통한 조사로 이루어 졌으며, 설문지 총150부를 배부하여 연구에 적합한 106부를 SPSS 18.0 통계 프로그램을 이용하여 분석하였다. 인구사회학적 특성으로는 연령, 성별, 근무경력, 학력, 근무부서로 하였으며, 보수교육에 대한 만족요인으로는 제도, 주제, 도움, 강사선택의 적절성, 전문성 등, 총 21가지 요인으로 하였으며, 보수교육의 문제점으로는 장소, 교통편, 다양성, 행정처리, 홍보, 방법 등, 총18가지 요인으로 분석하였다. 보수교육에 대한 만족도 (3.02점)와 보수교육에 대한 문제점(3.18점)은 보통수준으로 보수교육에 대한 문제점이 조금 높게 분석되었다. 보수교육은 보건의료인이면 누구나 이수해야 하는 교육이며, 보수교육 이수 시간으로 3년마다 면허 재 신고를 해야 하는 주요한 교육이다. 다양한 의료기관에 근무하는 방사선사를 대상으로 하는 보수교육은 의원에 근무하는 방사선사의 교육수준에 부합하지 못하다는 의견이 많았다. 그러므로 의원방사선사의 보수교육에 대한 만족도를 높이기 위한 방안으로 보수교육에 대한 다양한 의견과 개선사항을 현실성 있는 교육 프로그램으로 반영하여, 교육의 질적 향상을 통한 보수교육에 대한 만족도를 높여야 할 것이다.

Grape cultivar “Campbell Early” account for 70% of table grape in Korea and Leaf Spot Disease caused by Pseudocercospora vitis is one of a major disease in greenhouse and field grown area during late summer season in both of organic and conventional grape farm. Leaf spot disease can cause lowing of sugar content in fruit and vine growth and very difficult to control especially in organic field. Photosynthesis ability and chemical components are compared between leaf spot disease infected leaves with degree of necrotic area. With increase of disease necrotic area, CO2 differential value, water use efficiency and CO2 assimilation and respiration ratio are decreased proportionally and on the other hand, stomatal conductance value is not affected by disease necrotic area. Chlorophyll contents are also decreased by 50% in heavily infected leaves and imply decrease of chlorophyll contents is a major source of photosynthesis ability decline. With increase of disease necrotic area in leaves, total nitrogen and phosphate contents are decreased and on the other side, total carbon, potassium, calcium and magnesium contents are increased. From this research, we can infer that not only chemical control program is important in control of leaf spot disease but also fertilizing program is significant especially in organic agronomical control of fungal disease in grape cultivar “Campbell Early”.