In order to investigate the effect of proteolytic enzymes contained in fruits, ginger, pear, and kiwi were used to measure Warner Bratzler shear force, tensile strength and collagen content of the pork hind legs in a refrigerator at 4 ℃ for 45 hours. Pork had large differences in fat content in each region. Especially, pork hind legs have been classified as non-preferred meat because it is a low fat region and it is hard to make tender texture after cooking. Meat quality depends on texture, especially tenderness, and efforts have been made to soften meat and methods have been used to soften meat using proteolytic enzymes.
Warner bratzler shear force values of all treatments were analyzed to be very tender and the shear force value of the control was also very low at 2.33 kg/0.5 inch2. The total collagen content was not significantly different between the control and experimental groups, but insoluble collagen was the lowest at 0.1318g/100g in the kiwi samples. The highest of soluble collagen was also 0.2378g / 100g in the kiwi samples, and there was no significant difference in the treatment group containing the control group. The current study indicated that Kiwi juice had the best tenderization effect on port meat.

Plant viruses, unlike other pathogens, are very small parasitic pathogens, and they are present in plants at low concentrations, damaging plants. The virus is the next most common cause of infectious diseases causing infectious diseases in plants and infects majot economic crops in Korea. The early and accurate detection of plant viruses is an essential component to control those. The symptoms of a virus-infected plant are similar to those of a physiological disorder. In this case, it is not easy to to distinguish them by visual observation. Most mutations or nutritional deficiencies or toxicity, insecticidal damage of insects and mites, and damage due to other pathogens and factors are very similar with diseased plants specially in the field. From the last three decades, several methods to detect plant virus, including enzyme-linked immunosorbent assays (ELISAs) and polymerase chain reaction (PCR). PCR evolved to many variants with greater sensitivity than ELISAs. Many systems (serological-based methods, PCR techniques, and hybridization-based methods) of plant virus detection are reviewed here to increase comprehensive understand on diagnostic systems.

In recent years, as the demand for urban people has been continuously increasing for rural experience, it can be used as basic data for constructing images of various experiences in rural areas. In addition, since it is the data that can grasp the emotional image of the urban people about the image of the rural experience, it is necessary to continuously induce the experience of the urban people in the rural area, including opening the import, increasing the income gap between the urban area and the rural area, And it is expected that it will have an opportunity to promote the economic activation of the rural area. This research will be used as a basic data for building a successful image of rural experience by taking into consideration the factors of emotional image in the rural areas of urban residents. However, considering the fact that this study is limited to a simple analysis of the image of rural experience, it will be necessary to improve the quality of research through concrete and accurate statistical analysis in the future and to complement the logic of research.