• Food Science and Preservation
• /
• v.16 no.5
• /
• pp.747-753
• /
• 2009

Trans-resveratrol, quercetin, and epicatechin are natural polyphenolic substances with a wide range of biological activities, including anti-oxidant and anti-cancer properties. The compositions and levels of these chemicals were determined in grape (Vitis vinifera) juice and wine of different geographic origins. Significant differences in Hunter color values, pH, total acidity, and ethanol and free sugar contents, were found depending on both the nature and country of processing. Overall, trans-resveratrol and quercetin levels in wines were higher than in juices, indicating that wine is a rich source of these chemicals. Significant differences in the content and composition of epicatechin were found to depend on processing procedures, country of origin, and cultivar. This information may be useful to grape breeders and manufacturers of wine or juice.

• Food Science and Preservation
• /
• v.16 no.5
• /
• pp.714-718
• /
• 2009

Polyphenols are naturally occurring antioxidants and play many important roles in human health. Grape leaves have not yet been reported to contain the antioxidants. In this study, the physicochemical properties of powders from young grape leaves, obtained after hot-air or vacuum freeze drying, were analyzed. Weight loss rangedfrom 76-80%, but no difference was found between samples prepared by hot-air orvacuum freeze drying. The L-, a-, and b- values of grape powder all fell upon hot-air drying. Quercetin, resveratrol, catechin, and epicatechin were detected in all cultivars. The contents of the four polyphenols were generally higher in powders obtained by vacuum freeze dryingthan in those prepared by hot-air drying, indicating that vacuum freeze drying is better for optimal preservation of polyphenols. None of three polyphenols assayed was found in some cultivars or after certain drying treatments. Based on physiochemical properties, our findings suggest that powders obtained after vacuum freeze drying are optimal for industrial use.

• Culinary science and hospitality research
• /
• v.19 no.4
• /
• pp.161-175
• /
• 2013

This study investigates the impact of the attributes of the eco-friendly agricultural products traceability system on perceived value and behavioral intention. Empirical subjects are those who live in Seoul and Gyeonggi province, over the age of 20 and have experience of buying eco-friendly agricultural products though department stores, discount stores and specialized eco-friendly product stores. After distributing 550 copies of questionnaire from April 10th, 2013 to May 9th, 2013, 470 copies(85.5%) are used for a final statistical analysis of the survey after excluding the copies with biased opinions or missing values. The results of this study show sufficient theoretical base for future research by verifying a causal relationships between the attributes of eco-friendly agricultural products traceability system such as reliability, safety and innovation, and consumers' perceived value and behavioral intention. Therefore, producers should correctly record producing history base so that consumers can continue to use the system. The traceability system can not only satisfy consumers by enhancing transparent management and producing systems for eco-friendly products but also guarantee us to eat all products we get without worries.

• Journal of Agricultural Extension & Community Development
• /
• v.15 no.4
• /
• pp.659-681
• /
• 2008

The purpose of this study is to empirically analyze factors that influence farm managers' intentions to use an agricultural farm management information systems. It focused on "LFcenter System," a leading information system operated by the Rural Development Administration for farm management. Participants of this study are classified into two groups: a group of leading farm managers and a group fo regular farm managers. A total of 192 survey samples on users' intentions are collected; 85 samples from leading farm managers and 107 from regular farm managers. The theoretical background of this study is developed based on Theory of Reasoned Action(TRA), Technology Acceptance Model(TAM), Diffusion of Innovation(DOI), Social Cognitive Theory(SCT), and Theory of Planned Behavior(TPB). Partial Least Squares(PLS) method is used to test a proposed Structural Equation Model(SEM), including nine hypotheses. The differences between two groups are investigated using Smith-Satterthwait test. The findings from this study are: First of all, in terms of average comparison of most variables used in this study, a group of leading farm managers shows higher value that the other group in most cases. Second, hypothesis tests how that "subjective norms", "goal to study", "perceived usefulness", "perceived enjoyment", and "intention to use" significantly influence the intention to use an agricultural management information system in the group of leading farm managers. However, "subjective norms", "goal to study", "perceived ease of use", "perceived usefulness", "perceived enjoyment", and "intention to use" turned out to significantly influence the intention to use an agricultural management information system in the group of regular farms managers. Based on the results of Smith-Satterthwait test, compared with a group of leading farms managers, the impact of "goal to study" on "intention to use" is significantly stronger. On the other hand, in the group of leading farms managers, "perceived usefulness" and "perceived enjoyment" turned out to be main drivers of "intention to use."

• International Journal of Industrial Entomology and Biomaterials
• /
• v.1 no.2
• /
• pp.87-90
• /
• 2000

This paper has reviewed the China Sericulture history in the 20th century. On the basis of the current sericulture production, sericulture area distribution, problems and challenges, it has been forecasted that China sericulture will be developed as following points: 1) On a stable basis, cocoon production increased gradually to a suitable amount; 2) Quality cocoon production bases established to form a regionalized, industrialized and specialized sericulture structure; 3) With increase of householding rearing capacities, rearing facilities improved; 4) Production efficiency raised and silk product quality improved through technical innovation; 5) New and diversified products developed from Sericultural resources with new and high technologies.

• Proceedings of the Korean Society of Plant Pathology Conference
• /
• 2003.10a
• /
• pp.73.2-73
• /
• 2003

Typical whiches broom symptoms caused by phytoplasma were observed in Ash (Fraxinus rhynchophylla Hence) in Korea. The symptoms were showing abnormally small leaves, short internodes, and proliferation of shoots. Fluorescence and electron microscopy of leaf midribs revealed phytoplasma positive DAPI fluorescence and numerous phytoplasma bodies localized in the phloem sieve tubes. Phytoplasma DNA of 1.8 Kb was detected consistently from all symptomatic samples by the amplification of phytoplasma DNA with the phytoplasma specific primer pair Pl/P7. But no phytoplasma DNA was detected in healthy ash seedlings. Based on sequence analyses of an amplified region, this phytoplasma is closely related to Eqilodium phyllody, Mulberry dwarf, and Aster yellows phytoplasmas with the homology of 99.95 ％, 99.79 ％ and 99.78 ％, respectively, This phylogenetic analyses indicate that ash witches broom phytoplasma but is evidently distinct from the ash yellows group 16SrⅦ and should be classified into the Aster yellows group 16SrⅥ.

• Proceedings of the Korean Society of Agricultural Engineers Conference
• /
• 2001.10a
• /
• pp.252-255
• /
• 2001

This study aimed at proposing an policy improving directions of the rural empty homes grant scheme in Korea. The implementation procedures and results of the relevant schemes / projects on optimum use of rural empty homes at home and abroad were reviewed by literature and internet searches. From the reviewing results, an tentative set of policy directions for project improvement were proposed ; extension of project scope to all the redundant resources, dual focussing of project objectives on housing innovation and economic regeneration of communities, and systematization of project plan and implementation especially in the statutory aspects.

• Journal of Korean Society of Rural Planning
• /
• v.8 no.1 s.15
• /
• pp.85-93
• /
• 2002

This study aimed at proposing policy improving directions of the rural empty homes grant scheme in Korea. The implementation procedures and results of the relevant schemes/projects on optimum use of rural empty homes at home and abroad were reviewed by literature and internet searches. From the reviewing results, a tentative set of policy directions for project improvement were proposed: extention of project scope to all the redundant resources, dual focussing of project objectives on housing innovation and economic regeneration of communities, and systematization of project plan and implementation especially in the statutory aspects.

• Korean Journal of Agricultural Science
• /
• v.39 no.4
• /
• pp.619-628
• /
• 2012

Promoting Rural industry development projects with the support of the Ministry for Food, Agriculture, Forestry and Fisheries had elapsed about 5 years old. Agency selected 30 municipalities they annually promoting business, its performance will be examined. The alternative analysis of the business problem and seeks to provide policy direction. Superior rural enterprises to build business through fostering rural industry than what the system of rural industries in the region to want to foster entrepreneurship, 6th industrialization area industrial structure for each of the items, and not continue to make policy judgments about the point of needis. Therefore, in this paper, so far, through the analysis of the performance of alternatives by sector presented.

• Proceedings of the Korean Society for Agricultural Machinery Conference
• /
• 1993.10a
• /
• pp.109-118
• /
• 1993

Development process of agricultural technology has been studied with a case study of Korean agriculture. Technological is considered as a transformer of inputs into outputs and hence technological appropriateness, an important aspect of agricultural development strategies, is considered as a dynamic concepts. Considering the concept of agricultural system as a delivery system for providing essential materials and services to producers and consumers, it has been divided into two major groups of dimensions vis. external challenge dimensions and internal response dimensions. Market, investment and agro-ecosystem constitute the external challenge dimensions : whereas trade , technology as well as production and resources allocation constitute internal response dimensions. The system manager is responsible for maintaining equilibrium in the mentioned six sub-systems. Two kinds of alternatives paths of technological development viz. land saving technology and labour saving technolog have been studied. Technology is considered as a combination of four basic components viz. facilities, abilities, facts and frameworks. Adoption of innovation in agriculture depends on profitability, awareness, risk aversion, financial capacity, institutional infrastructure, availability of physical inputs and adaptability to the local conditions. For a cast study of Korea, changes in the agricultural system through external challenge dimensions are investigated. The impacts of industrialization on agro-ecosystem reported are shift of labour from the agricultural sector to non-agricultural sectors and continuously increasing demand of farm the agricultural sector to non-agricultural sectors accompanied by increase in land prices. The impacts on the commodity market discussed are shift in demand from rice, barley and other cereals to meat , dairy products and vegetables : and increasing in supply capacity of agricultural inputs. The process of agricultural development from 1962 to 19 1 9 (i.e. from start of the first to the end of the sixth five year plan) are also discussed in details with several policy measures taken. The trend of agricultural income and productivity are also analyzed. The main cause of increase in the agricultural income is considered as increase in labour productivity. The study revealed that during the span of 1965-88, holding size has not changed significantly, but both the land and labour productivity increased and so did the agricultural income. R&D activities in Korea have changed over time in three stages vix. import of improved technology, localization by adaptive research and technological mastery. For the new technology to be made affordable to farmers, policy measures like fertilizer and food grain exchange system, dual price system in rice and barely and loan for machinery were strengthened.