• 펄프종이기술
• /
• 제36권2호
• /
• pp.70-76
• /
• 2004

The pallet loading pattern and efficiency were analyzed on the packaging boxes for agricultural products. Also, the pallet layout chart was proposed as a convenient tool in selecting the suitable packaging dimensions for them. By researching the layout pattern and maximum number of agricultural products in the packaging box, we can choose the efficient box dimension.

• 한국식품위생안전성학회:학술대회논문집
• /
• 한국식품위생안전성학회 2002년도 춘계학술발표대회 및 심포지움
• /
• pp.139-142
• /
• 2002

This study carried out to evaluate TMDI(theoretical maximum daily intake) and EDI(estimated daily intake) for Korean by using MRLs, food intake, residue data, and correction factors and compare with ADI(acceptable daily intake) in order to estimate the health risk based on the pesticide exposure.

• 농약과학회지
• /
• 제14권2호
• /
• pp.86-94
• /
• 2010

본 연구는 2006년 3월부터 2008년 12월까지 부산지역 농산물도매시장으로 유입되는 경매 전 농산물 7,237건에 대해 다종농약다성분법으로 잔류농약검사를 실시하였다. 이 중 1,164건 (16.1%)에서 농약이 검출되었으며, 231건 (3.2%)은 잔류허용기준을 초과하였다. 기준초과된 농산물은 대부분 해당 농산물에 대한 잔류허용기준이 정해져 있지 않아서 잠정기준을 적용받는 경우로서 기준초과된 231건 중 181건으로 78.4%가 이에 해당한다. 농약성분별로 endosulfan, procymidone, chlorothalonil, ethoprophos, chlorpyrifos, diethofencarb, kresoxim-methyl, EPN 순으로 잔류허용기준이 초과되었다. 잔류농약이 검출된 1,164건의 농산물 중 211건에서 두 종류 이상 농약이 검출되었고 이 중 37.9%에 해당되는 80건이 기준초과되었다. 본 연구에서 농약 잔류허용기준을 초과하는 요인은 해당 농산물에 대한 미적용 농약의 사용, 두 종류 이상의 농약사용으로 나타났다.

• 한국조리학회지
• /
• 제19권1호
• /
• pp.103-120
• /
• 2013

본 연구는 소비자의 친환경 구매가치가 친환경 농산물에 대한 신뢰, 친환경 농산물에 대한 소비자의 구매의도에 어떠한 영향을 미치는가에 대하여 알아보고자 시행하였으며, 이는 정부, 기업, 소비자단체 등에 기초자료를 제공함으로서 소비자의 친환경 농산물 구매를 통한 국민건강증진 방안을 모색하는데 도움이 되고자 한다. 본 연구의 표본 추출을 위해 전국 백화점 및 친환경 식자재 유통점포를 방문하는 소비자들 중 해당하는 백화점 및 친환경 식자재 유통점포를 이용 경험이 있는지를 선조사한 후 반드시 이용 경험이 있다고 한 고객만을 대상으로 하였다. 조사기간은 2012년 8월 1일부터 2012년 9월 30일에 걸쳐 2개월간 실시하였고, 총 350부의 설문지를 배포하여 321부(91.7%)를 최종분석 자료로 활용하였다. 연구의 결과는 첫째, 친환경 소비가치가 친환경 농산물의 신뢰에 미치는 영향을 분석한 결과, 독립변수 환경보존 가치, 경제적 가치모두가 친환경 농산물의 신뢰에 유의한 영향을 미치는 것으로 나타났고, 이중 경제적 가치가 가장 영향력이 큰 항목으로 나타났다. 둘째, 친환경 소비가치가 친환경 농산물의 구매의도에 미치는 영향을 분석한 결과, 독립변수 환경보존 가치, 경제적 가치모두가 친환경 농산물의 구매의도에 유의한 영향을 미치는 것으로 나타났고, 경제적 가치가 가장 영향력이 큰 항목으로 나타났다. 셋째, 친환경 농산물의 신뢰가 친환경 농산물의 구매의도에 미치는 영향을 분석한 결과, 친환경 농산물의 신뢰가 높게 나타날수록 소비자들의 친환경 농산물 구매의도가 높아지는 것으로 나타났다.

• Journal of Microbiology and Biotechnology
• /
• 제32권6호
• /
• pp.749-760
• /
• 2022

α-Galactosidase is a debranching enzyme widely used in the food, feed, paper, and pharmaceuticals industries and plays an important role in hemicellulose degradation. Here, T26, an aerobic bacterial strain with thermostable α-galactosidase activity, was isolated from laboratory-preserved lignocellulolytic microbial consortium TMC7, and identified as Parageobacillus thermoglucosidasius. The α-galactosidase, called T26GAL and derived from the T26 culture supernatant, exhibited a maximum enzyme activity of 0.4976 IU/ml when cultured at 60℃ and 180 rpm for 2 days. Bioinformatics analysis revealed that the α-galactosidase T26GAL belongs to the GH36 family. Subsequently, the pET-26 vector was used for the heterologous expression of the T26 α-galactosidase gene in Escherichia coli BL21 (DE3). The optimum pH for α-galactosidase T26GAL was determined to be 8.0, while the optimum temperature was 60℃. In addition, T26GAL demonstrated a remarkable thermostability with more than 93% enzyme activity, even at a high temperature of 90℃. Furthermore, Ca²⁺ and Mg²⁺ promoted the activity of T26GAL while Zn²⁺ and Cu²⁺ inhibited it. The substrate specificity studies revealed that T26GAL efficiently degraded raffinose, stachyose, and guar gum, but not locust bean gum. This study thus facilitated the discovery of an effective heat-resistant α-galactosidase with potent industrial application. Meanwhile, as part of our research on lignocellulose degradation by a microbial consortium, the present work provides an important basis for encouraging further investigation into this enzyme complex.

• Journal of Microbiology and Biotechnology
• /
• 제31권8호
• /
• pp.1123-1133
• /
• 2021

Biodegradation is the key process involved in natural lignocellulose biotransformation and utilization. Microbial consortia represent promising candidates for applications in lignocellulose conversion strategies for biofuel production; however, cooperation among the enzymes and the labor division of microbes in the microbial consortia remains unclear. In this study, metagenomic analysis was performed to reveal the community structure and extremozyme systems of a lignocellulolytic microbial consortium, TMC7. The taxonomic affiliation of TMC7 metagenome included members of the genera Ruminiclostridium (42.85%), Thermoanaerobacterium (18.41%), Geobacillus (10.44%), unclassified_f__Bacillaceae (7.48%), Aeribacillus (2.65%), Symbiobacterium (2.47%), Desulfotomaculum (2.33%), Caldibacillus (1.56%), Clostridium (1.26%), and others (10.55%). The carbohydrate-active enzyme annotation revealed that TMC7 encoded a broad array of enzymes responsible for cellulose and hemicellulose degradation. Ten glycoside hydrolases (GHs) endoglucanase, 4 GHs exoglucanase, and 6 GHs β-glucosidase were identified for cellulose degradation; 6 GHs endo-β-1,4-xylanase, 9 GHs β-xylosidase, and 3 GHs β-mannanase were identified for degradation of the hemicellulose main chain; 6 GHs arabinofuranosidase, 2 GHs α-mannosidase, 11 GHs galactosidase, 3 GHs α-rhamnosidase, and 4 GHs α-fucosidase were identified as xylan debranching enzymes. Furthermore, by introducing a factor named as the contribution coefficient, we found that Ruminiclostridium and Thermoanaerobacterium may be the dominant contributors, whereas Symbiobacterium and Desulfotomaculum may serve as "sugar cheaters" in lignocellulose degradation by TMC7. Our findings provide mechanistic profiles of an array of enzymes that degrade complex lignocellulosic biomass in the microbial consortium TMC7 and provide a promising approach for studying the potential contribution of microbes in microbial consortia.

• 한국농업기계학회:학술대회논문집
• /
• 한국농업기계학회 2017년도 춘계공동학술대회
• /
• pp.111-111
• /
• 2017

There still exist adhesives that have toxic compounds or consist of those materials in both our life and lots of industries. For instance, formaldehyde adhesive had been still used for woodworking and some medical adhesives had been considered as toxicity problems. In this situation, natural adhesives from raw materials have been suggested as an one of considerable interests. Natural adhesives in recent have been reported fabrication methods via biological materials such as proteins, celluloses, and starches. By-products derived from agricultural something have them richly and each has additional special properties. Using these properties to make natural adhesives, unique adhesives would be attained. In particular, rice-based adhesive is such a good example. Rice-based by-product adhesives have interestingly some pros pertaining to high adhesive strength, excellent water resistance and could dramatically be reduced a formaldehyde a harmful component of plywood. Hence, rice-based adhesive like glues could be applied to lots of industries including agricultural and biological technology. This review paper highlighted some recent development on natural adhesives as a promising biomaterial for agricultural and biological technology fields. The design of agricultural by-product-based natural adhesives were described to demonstrate the application of agricultural and biological technology

• 한국농업기계학회:학술대회논문집
• /
• 한국농업기계학회 2017년도 춘계공동학술대회
• /
• pp.108-108
• /
• 2017

In this study, biocomposite filaments with agricultural by-products can be used in extrusion-based 3D (Three-dimensional) printing. Extrusion-based 3D printing stands as a promising technique owing to its versatility. We hypothesized that bio-filament composite consisted of something derived from agricultural by-products could be used as 3D printing materials that could overcome the drawbacks of PCL (poly-caprolactone). Bio-filament mixed with PCL and agricultural by-products was defined as r-PCL in this study. In order to find it out the optimal mixing ratio of filaments, we had investigated PCL, r-PCL 10%, r-PCL 20%, r-PCL 50% separately. The morphological and chemical characteristics of the filaments were analyzed by FE-SEM (Field emission scanning electron microscope) and EDX (Energy-dispersive X-Ray spectroscopy), and the mechanical properties were evaluated by stress-strain curve, water contact angle, and cytotoxicity analysis. Results of this study have been shown as a promising way to produce eco-friendly bio-filaments composite for FDM (Fused deposition modeling) method based 3D printing technology. Thus, we could establish biomimetic scaffolds based on bio-printer filaments mixed with agricultural by-product.

• 한국식생활문화학회지
• /
• 제29권6호
• /
• pp.528-538
• /
• 2014

The purpose of this study was to investigate the relationships among recognition, preference, and purchasing characteristics for Changnyeong onions and garlic as well as festival satisfaction among participants at agricultural product festivals in the Changnyeong region. Results showed that festival satisfaction of 'place of festival' was highest while 'convenience facility & event contents' earned the lowest scores. Most subjects (90.5%) had purchased Changnyeong agricultural and processed products. A major purchasing type was fresh agricultural products (66.7%). The pathways to recognize Changnyeong agricultural products were mostly 'promotion by related institutions' (22.0%), 'family relatives' (20.8%), 'mass media' (16.6%), and 'festivals and events' (16.1%). The most considered factors for purchasing regional products were 'geographical origin' and 'ingredients'. Changnyeong onion showed higher scores for recognition and preference and rate of purchase experience and intention than for garlic. The correlation coefficients of recognition and preference for onion and galic were 0.603 (p<0.001) and 0.598 (p<0.001), respectively. The explanation power ($R^2$) of related variables for purchase of Changnyeong onions was 0.258. The regression coefficients (${\beta}$) for 'recognition', 'preference' and 'convenient facility & event contents' were positive, whereas the regression coefficient for 'price' was negative. Recognition, preference, and convenient facility & event contents with garlic purchase showed a positive relationship ($R^2$=0.253). The most effective promotion method to increase sales of Changnyeong agricultural products was 'local festivals and events' (27.8%).

• 농업과학연구
• /
• 제33권1호
• /
• pp.57-66
• /
• 2006

This study attempts to investigate the possible extent that main spicy vegetables' competitiveness can be improved through various measures. More widely open the agricultural market becomes, more important enhancing the competitiveness of domestic agricultural products is especially in high tariff products such as red-pepper and garlic. Up to date, numerous measures have been applied to those products for enhancing the competitiveness by government, regional agencies, and producer's organizations. However, there is few studies about how much the competitiveness can be improved as a whole from implementing the diverse methods. Following the results, the competitiveness of red-pepper and garlic can be improved up to 70% and 50% respectively by reducing production costs.