• Title, Summary, Keyword: Agricultural products

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Simultaneous Analysis of Multi-Residual Pesticides Using UPLC (UPLC를 이용한 잔류농약 다성분 동시분석 연구)

  • Kim, Ki-Yu;Eom, Mi-Na;Kang, Jung-Bok;Do, Young-Suk;Moon, Su-Gyeong;Jung, Il-Hyeong;Son, Jong-Sung;Pi, Il-Seon;Park, Eun-Mi;Kim, Young-Su;Lee, Seong-Bong;Cho, Sang-Hun;Moon, Sun-Ae
    • Bulletin of Food Technology
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    • v.21 no.2
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    • pp.49-54
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    • 2008
  • 농산물 중 잔류농약을 보다 쉽고 효율적으로 분석 할 수 있는 다성분 동시분석 방법에 따라서 UPLC-PDA을 이용하여 기기조건에 따른 검출한계 및 정량한계를 식품별 최저 MRL과 비교하여 유효성을 알아보고 회수율을 통하여 방법의 재현성을 조사한 결과 다음과 같다. 41종의 농약에 대한 검량선은 직선성이 우수하였으며 검출한계 $0.005{\sim}0.109mg/kg$으로 나타났으며 정량한계 는 $0.018{\sim}0.363ppm$으로 나타났다. Cycloprothrin 등의 경우처럼 검출기의 감응도가 최저 MRL 기준을 초과하는 농약에 대한 보완으로는 검출감도가보다 우수한 UV 검출기 등의 병행 활용이 필요하다. 회수율에 따른 재현성은 쌀의 경우 첨가 농도 0.4 mg/kg 일때 $62.09{\sim}99.58%$로 편차범위는 $1.03{\sim}13.92%$ 얻을 수 있었다.

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An Analysis of the Effects of Consumer Characteristics and Consumer Trust on Purchase Intention of Environment-friendly Agricultural Products (소비자 특성과 소비자 신뢰가 친환경농산물의 구매의도에 미치는 영향 분석)

  • Kim, Mi-Song;Choi, Hyung-Kyu;Kim, Dong-Hwan
    • Journal of Distribution Science
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    • v.11 no.1
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    • pp.45-53
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    • 2013
  • Purpose - The environment-friendly agricultural product market in Korea sees continual high growth. Recently, the Korean government has been actively fostering environment-friendly agriculture as an engine of future growth. Korean people have increasingly become more health-conscious and interested in food safety issues. Many distribution and retailing companies have responded with various promotional activities. However, most of these are not strategic and appear to have unsatisfactory outcomes. The main purpose of this paper is to suggest effective marketing strategies for environment-friendly agricultural products. To achieve this aim, the study empirically investigates the effects of consumer characteristics and trust on the purchase intention of environment-friendly agricultural products. Research design, data, methodology - Based on the theory of planned behavior, and previous studies related to the purchase intention and consumption of environment-friendly agricultural products, we set up five study hypotheses. These related to the demographic characteristics of consumers, purchase intention, and behavior of the products. We then set up a study model and four study hypotheses relating to health consciousness, environmental consciousness, consumer trust level, purchase intention, and behavior of the products. The data were collected using a questionnaire given to consumers living in Seoul and southern Geonggi Province. The final sample size is 403 and mean age is 44.3. SPSS 15.0 for Windows and Amos 7.0 were used as statistical analysis tools. Meaningful results were derived using frequency analysis, correlation analysis, a t-test, and structural equation modeling. Results - Empirical results of this research are as follows. (1) First, it is shown that consumers consider such attributes as intimacy and health to be important when they buy environment-friendly agricultural products. (2) We also found that consumers recognize the value of environment-friendly agricultural products as high, but their trust level as low. (3) Consumer groups consisting of married couples, with higher education, higher income, and higher age are shown to have a higher intention of buying environment-friendly agricultural products than any other consumer group. (4) It is estimated that the level of consumer trust positively affects the purchase intention of environment-friendly agricultural products. The path coefficient (.138) between consumer trust and purchase intention is statistically significant at the α = .05 level. (5). It is also estimated that environmental consciousness positively affects purchase intention. The path coefficient (.245) between environmental consciousness and purchase intention is statistically significant at the α = 0.05 level. The standardized path coefficients of consumer trust and environmental consciousness with purchase intention are .556 and .288 respectively. Therefore, consumer trust affects purchase intention more than environmental consciousness. (6) Finally, purchase intention is estimated to positively affect purchase behavior. Conclusions - Based upon empirical results, this research suggests that marketers of environment-friendly agricultural products should focus more on increasing consumer trust levels, emphasizing the training and education of employees. The government also should pay attention to a standardized certification system for environment-friendly agricultural products. Marketers of environment-friendly agricultural products should consider the consumer groups of married couples, with higher education, higher income, and higher age as a major target segment.

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A Study on Purchasing Agricultural Products of Re-visitors In Traditional Market Using Double Hurdle Model (더블허들 모형을 이용한 전통시장 재방문객의 농산물 구입결정 요인에 관한 연구)

  • Yi, Hyangmi
    • Journal of Korean Society of Rural Planning
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    • v.21 no.2
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    • pp.137-147
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    • 2015
  • In this study, consumers who have experience of visiting Jeongsun Arirang Market has been selected as samples to understand the characteristics of agricultural products purchase. For this, double hurdle model was used in order to resolve sample selection problem and obtain consistent estimator. The key points are the following. First, as the age increases(up to 59.8 years), chances of purchasing the products at traditional market increase as income increases. Second, when the residence area is outside of Gangwon-province, the purchase amount of the products increased compared to those from visitors within the Gangwon province. Also, visitors who use public transportations purchase less products compared to those who use their own car. Third, probability of agricultural products increase as the visitors consider positive effect the product purchase leads to the local farmers. Fourth, if the visitors consider the quality of the agricultural products, probability of purchasing agricultural product at the site increases. However, if the visitors consider the freshness of the agricultural products, the purchase amount rather drops. Fifth, the probability of purchase increases as visitors consider the brand of traditional market.

Determination factors of Purchase Expansion for Environment friendly Agricultural Products on Consumers (소비자의 친환경농산물 구매확대 결정요인 분석)

  • Ro Chae Yeong;Ahn Pyong Ryol
    • Korean Family Resource Management Association
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    • v.9 no.1
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    • pp.1-15
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    • 2005
  • This study was designrd to determination factors of purchase expansion for environment-friendly agricultural products on consumers. The 310 subjects formatted questionnaires were analyzed to frequency, percentage, descriptives, T-test and logistic regression by SPSS WIN 10.0. The results were as follows : First, it is proved that degree of cognition, standard of information acquisition, basis of valuation were significant variables, Second, it is revealed that the producer and the direct deal, the consumer organization's co-op and the food floor of large-sized discount hoarded goods for purchase places of environment-friendly agricultural products were significant variables. Third, it is proved that reduction in a price the improvement matter for purchase expansion of environment-friendly agricultural products was determination factors. Forth, it is proved that age and income for purchase expansion of environment-friendly agricultural products was determination factors. Accordingly, we should find the positive factors of purchase and consumption that it will become an important subject for environment-friendly agricultural products on consumers.

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Impact of Farmers' Sense of Community on Organizational Commitment and Business Performance - Focusing on Farmers Participating in the Agricultural Products Processing Center - (농업인의 공동체의식이 조직몰입과 경영성과에 미치는 영향 - 농산물종합가공센터 참여농가를 중심으로 -)

  • Jeong, Seong-Ok;Jang, Dong-Heon
    • Journal of Korean Society of Rural Planning
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    • v.26 no.1
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    • pp.13-22
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    • 2020
  • This study analyzed the relationship between the sense of community, organizational commitment, and business performance among farmers participating in the agricultural products processing center. As a result, the farmer's sense of community at the agricultural products processing center had a positive effect on organizational commitment, and the farmer's sense of community had a positive effect on business performance. In this regard, efforts should be made to systematically manage and sustain the future of formal, formal and informal activities of the agricultural products processing center. In addition, in order for the community formed at the agricultural products processing center to continue to grow, it is necessary to take the approach of improving the competence of personnel, organizing work, developing professional programs, and forming related networks. In addition, the organization formed through the agricultural products processing center should be grown as a farmer's organization of processing base so that it can be linked with the activation policy such as food plan and local food.

Pattern Analysis of Nonconforming Farmers in Residual Pesticides using Exploratory Data Analysis and Association Rule Analysis (탐색적 자료 분석 및 연관규칙 분석을 활용한 잔류농약 부적합 농업인 유형 분석)

  • Kim, Sangung;Park, Eunsoo;Cho, Hyunjeong;Hong, Sunghie;Sohn, Byungchul;Hong, Jeehwa
    • Journal of the Korean Society for Quality Management
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    • v.49 no.1
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    • pp.81-95
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    • 2021
  • Purpose: The purpose of this study was to analysis pattern of nonconforming farmers who is one of the factors of unconformity in residual pesticides. Methods: Pattern analysis of nonconforming farmers were analyzed through convergence of safety data and farmer's DB data. Exploratory data analysis and association rule analysis were used for extracting factors related to unconformity. Results: The results of this study are as follows; regarding the exploratory data analysis, it was found that factors of farmers influencing unconformity in residual pesticides by total 9 factors; sampling time, gender, age, cultivation region, farming career, agricultural start form, type of agriculture, cultivation area, classification of agricultural products. Regarding the association rule analysis, non-conformity association rules were found over the past three years. There was a difference in the pattern of nonconforming farmers depending on the cultivation period. Conclusion: Exploratory data analysis and association rule analysis will be useful tools to establish more efficient and economical safety management plan for agricultural products.

Extraction of microbial transglutaminase from Amycolatopsis sp. fermentation broth using aqueous two-phase system

  • Shi, Nan;Xu, Hongwei;Guo, Kaiyuan;Kang, Chunyu;Zhang, Wei;Zhang, Yingying;Zhang, Liping;Tan, Jianxin
    • Korean Journal of Chemical Engineering
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    • v.34 no.8
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    • pp.2248-2254
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    • 2017
  • Partitioning of microbial transglutaminase (MTG) from Amycolatopsis sp. in the polyethylene glycol (PEG)/salt-based ATPS was investigated for the first time. The key parameters such as the molecular weight of PEG (PEG 600-6000), the type and concentration of phase-forming salt (ammonium sulfate or phosphates), the pH of system (pH 5.0-8.5), and the concentration of neutral salt (0-6% NaCl, w/w) were determined. The partition coefficient of the enzyme was not linear with PEG molecular weight; PEG1000 gave better yield than others. The concentration of PEG1000, ammonium sulfate and NaCl, and the system pH showed effects with different extents on specific activity (SA) and yield of the enzyme. In the ATPS of 26% w/w PEG 1000 and 19% w/w ammonium sulfate in the presence of 5% w/w NaCl and at pH 6.0, MTG was partitioned into the PEG-rich phase with a maximum yield of 86.51% and SA was increased to 0.83. The results of SDS-PAGE showed the MTG produced by the test strain differed from the enzymes reported before. Thus, this study proves that ATPS can be used as a preliminary step for partial purification of MTG from Amycolatopsis sp. fermentation broth.

A Safety Survey on Pesticide Residues in Dried Agricultural Products (건조농산물의 잔류농약 안전성 조사)

  • Lee, Hyo-Kyung;Oh, Moon-Seog;Jeong, Jin-A;Kim, Ki-Yu;Lee, Seong-Bong;Kim, Han-Taek;Kang, Hyang-Ri;Son, Ji-Hee;Lee, Yun-Mi;Lee, Mi-Kyoung;Lee, Byoung-Hoon;Kim, Ji-Won;Park, Yong-Bae
    • Journal of Food Hygiene and Safety
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    • v.34 no.4
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    • pp.340-347
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    • 2019
  • We performed a safety survey on residual pesticides in dried agricultural products. A total of 110 samples of dried agricultural products distributed in Gyeonggi-do were analyzed for 263 pesticides according to multi class pesiticide multiresidue method. Ten types of pesticides were detected in 10 samples. Chlorpyrifos was detected in Ricinus communis leaves, chlorpyrifos, hexaconazole, pyridalyl in Chwinamul (wild aster), diniconazole, isoprothiolane, lufenuron in radish leaves, hexaconazole in Cirsium setidens (Korean thistle), bifenthrin, and chlorothalonil, boscalid, and pyraclostrobin in pepper leaves. The detection rate of pesticides was 9.1%, and among these samples, one was detected over Maximum Residue Limits (MRLs). In the validation study, the values of limit of detection (LOD), limit of quantitation (LOQ), coefficient of determination ($R^2$) and recovery were in the range of 0.002~0.027 mg/kg, 0.006~0.083 mg/kg, 0.9964~1.0000 and 74.8~118.9%, respectively. The Positive List System (PLS) was newly introduced as part of the safety management of residual pesticide in agricultural products in Korea in 2019. With the application of the PLS, if the MRL is not established, 0.01 mg/kg limit is applied uniformly. In spite, these of strengthened residue limits, the MRLs of dried agricultural products are still insufficient. Therefore, this study could be utilized as basic data for the setting of proper MRLs.

Pesticide Residues Survey and Safety Evaluation for Perilla Leaf & Lettuce on the Garak-dong Agricultural & Marine Products Market (가락동 농수산물도매시장 반입 들깻잎과 상추의 잔류농약 실태 및 안전성 평가)

  • Park, Won-Hee;Hwang, In-Sook;Kim, Eun-Jeong;Cho, Tae-Hee;Hong, Chae-Kyu;Lee, Jae-In;Choi, Su-Jeong;Kim, Jin-A;Lee, Yun-Jeong;Kim, Mi-Sun;Kim, Gi-Hae;Kim, Moo-Sang
    • The Korean Journal of Pesticide Science
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    • v.19 no.3
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    • pp.151-160
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    • 2015
  • This study was conducted to monitor residual pesticides in perilla leaf & lettuce and to assess their risk to human health. The total number of perilla leaf & lettuce were 4,063 and 2,248 respectively and these products were collected at the Garak-dong Agricultural & Marine Products Market sold by auction from 2010 to 2012. Multi-residual analysis of 285 pesticides were performed by GC-ECD, GC-NPD, HPLC-DAD and HPLC-FLD. In perilla leaf, 61 pesticides were detected and detection rate was 20.0%. 28 pesticides were detected in case of lettuce and detection rate was 4.8%. In order to do risk assessment by perilla leaf & lettuce consumption, estimated daily intake of residual pesticides were determined and compared to acceptable daily intake, referring to hazard index (HI values). The range of % HI values of perilla leaf was from 0.000% to 0.049%. The range of % HI values of lettuce was from 0.000% to 0.095%. These results show that the risk caused by pesticide residues in perilla leaf & lettuce intake were very low and these vegetable intake was safe.

Study on the Trade Potentiality of Agricultural Products to South-east Asian Countries (동남아 제국과의 농산물 교역에 관한 연구)

  • Young-Kun Shim
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.11
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    • pp.133-142
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    • 1972
  • 1. The purpose of this study is to present effective way of increasing agricultural trade through investigating agricultural trade aspects of the south-east asian countries. 2. As the main industry of all the countries except Japan is agriculture, agricultural products occupies large part of products exported in these countries. However, due to the low level of technology and shorts of products to be exported, the traded amount of agricultural products is not so much. 3. In view of industralization, these countries are similiar to Korea. Therefore, Korea can hardly expect to increase trade amount only with the traditional agricultural products, for these countries emphasis on the import of capital goods. 4. The climate and the level of production technology of these countries differ greatly respectively. In order to increase exports, Korea has to develop strategic goods considering the facts mentioned above.

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