This study was conducted to evaluate the genetic distances and specific DNA makers by the randomly amplified polymorphic DNA (RAPD)-PCR method for the Korean native chickens(red plumage, red-line plumage, Ogol) and white leghorn. Genomic DNA was extracted from plumage from chickens after they were slaughtered. The extracted DNA was observed by nano-spectrometer. RAPD analysis was performed using 13 different primers. Statistical analysis was made for the estimation of the genetic distance among the chicken’s and the cluster tree was drawn by using MEGA 5.05 software. Genetic relations among them were determined by RAPD analysis. The polymorphic bands were observed 72% and the rest of 28% was monomorpic. The largest genetic distance (2.266) was found between the native chickens(red, red-line) and the ogol chickens by UPGMAP method and the closest distance was observed between the ogol in korean chickens as expected. The highest genetic distance between them was estimated 2.266 and in the dendrogram analysis, among I and II within cluster II, most of the ogol chickens were in IIB, indicating the expression of the ogol color could be due to original and the ancestral genetic crossing. Thus, this genetic distance can be useful as the differential genomic information in the normal(red plumage, red-line plumage) and ogol of korean native chickens. This work was supported by a grant from the “Livestock Preservation of Genetic Resources", Rural Development Administration, Republic of Korea.

Cryoprotectant is a substance used to protect biological tissue from freezing injury. However, there was few research paper on application of cryoprotectant in food stuff although its benefits was approved from the biological cell tissues. The objective of this study was to investigate the effect of the sugar addition as a cryoprotectant on the properties of frozen soybean sprouts. Before freezing process, the samples were blanched at 100°C for 1 min to observe the influence of blanching treatment. The blanched or non-blanched soybean sprouts was immersed in sugar solution as cryoprotectant, and continuously, the samples were frozen at -18°C for 24 h. Their physicochemical properties such as drip loss, hardness, color and cellular tissue were analyzed after thawing in running water. In our study, the drip loss of blanched sample without sugar was 43%, and comparatively, blanched one with sugar was 20% which was the lowest value among all samples. There was no significant difference of hardness between sample with sugar and without sugar. From our results, it was supposed that sugar can protect the soybean sprouts during freezing process regardless blanching process.

Soybean peptide (SP) exhibited low intestinal absorption at oral administration due to its fragile structure under gastric digestion. Therefore, we have attempted to encapsulate peptide by cross-linkage interaction between positive charged chitosan (CS) or chitosan oligosaccharide (CSO) and negative charged peptide. The CS (or CSO) with SP nanoparticles were prepared by using ultrasonification technique. The objective of this study was to find the optimal processing method by changing concentration, pH, and homogenizing conditions. We measured physicochemical properties such as particle size, zeta-potential, encapsulation efficiency (EE%), release rate (RR) and antioxidant ability of samples. The results showed that the optimal processing method was using 0.5% (w/v) CSO (diluted by pH 3 Acetic acid buffer) mixed with 0.5% (w/v) SP (diluted by pH 6 buffer) by 9:1 ratio. Afterwards, using high-speed mixer at 12,000 rpm for 3 min, and then passed 2 times through an ultrasonicator (50% power, 3 min). In this way for processing, the particle sizes of CSO/SP nanoparticles were approximately 300 nm, zeta-potential were approximately 45 mV. In addition, the EE% and RR of CS/SP nanoparticles was higher than the CSO/SP nanoparticles. The increase in antioxidant ability of SP was attributed to the affected by CS/CSO microcapsules. In conclusion, this research can befoundation for the manufacturing process of CS/SP nanoparticles, and it was expected that the future application of this nanoparticle in food matrix.

Recently, semi-dried sweet potato is popular as a natural snake for children’s dessert. The drying condition was optimized to obtain high quality of sweet potato by oven drying process. The mashed yellow and chestnut sweet potato was dried using the oven drier at different temperature (50, 60, 70, and 80°C) then evaluated for the moisture content, appearance observation, texture properties, and sugar contents and sensory test in every 2, 6 and 12 hours. During the dehydration and drying process, the ending point of moisture content divided in three zone from 0-2 hour, 4-6 hour and 8-12 hour. The moisture content was dramatically decreased from 0 hour - 8 hour, but after 8 hour there is no significant decrease. Yellow sweet potato dried at 80°C for 6 hours was investigated as good product base on the sensory test, hardness value, and color appearances as compared to chestnut potato.

Excessive salt intake in body induces health risks resulting high blood pressure or heart diseases. Therefore, the low salt concentration and sale tasted food is needed by means of the modification of manufacturing process. The purpose of this study was to study the effect of inhomogeneous salt localization in bread to enhance the saltiness encapsulated salt. The 0, 0.5, 1, 1.5, and 2.0% of liposome encapsulated salt (LS) was added into the baking of white pan bread. The final salt concentration was adjusted at 2% by addition of salt. After baking the bread, the moisture content, loaf volume, fermentation rate, color, texture analysis, salt release rate and sensory test were measured. From this study, moisture content has no significant difference between control and treatments (p>0.05), except for 2.0% LS. Lightness of all treatments was higher than control (p<0.05), whereas, there were no significant difference in hardness (p>0.05). From the sensory test, the bread added 2.0% LS was showed the highest value from the salty taste. Moreover, it is related to the highest release rate of salt was represented at 2.0% LS. In conclusion, the salty intensity of bread can be enhanced by the salt localization using encapsulation of salt.

Research efforts to explain the buyer-seller transaction have evolved from economic utilitarian approaches to ones incorporating social and psychological approaches. Earlier research, for example, relied on transaction cost analysis to help and explain the firm’s engagement in business relationships with a focus on minimizing the direct and opportunity costs of exchange (Lambe, Wittmann, & Speckman, 2001; Rindfleisch & Heide, 1997). Transaction cost analysis, however, is limited in explaining many relationship-based exchanges, of longer terms in particular, that have become more recent business goals and strategies across industries. Such limitations motivated researchers to adopt social and psychological perspectives that could enrich explanations of the exchange relationship. Social exchange theory (hereafter, SET) is one such approach that has resulted in widespread applications in more recent marketing research (Lambe et al., 2001). In addition to economic outcomes of an exchange, SET allows marketers to model non-economic, social and psychological outcomes in understanding and predicting whether the exchange relationship will continue or not.

Since the arrival of omni-channel retailing, which promotes seamless experience for consumers and zero effort commerce, channel integration has been a big issue in both the domestic and the international retail industry. Some researchers have identified problems that can occur in the process of channel integration, such as cannibalization and channel conflict (Coelho & Easingwood, 2003). However, many studies on channel integration report its positive impact on a firm’s revenue growth through improved trust (Schramm-Klein & Morschett, 2006), higher consumer conversion rates (Neslin et al., 2006), and greater cross-selling opportunities (Berry et al., 2010). Regarding the issue of effectively establishing channel integration in order to bring positive synergy to a company, the present study intends to identify a solution within a company’s internal factors. This study aims to provide a strategic perspective on channel integration formation of domestic fashion retailers by identifying some of the key organizational components that drive a firm’s channel integration in this omni-channel era, when the boundaries between online and offline markets are disappearing. This study predicts that organizational structure and strategic orientation are the key components of a fashion retailer’s channel integration implementation in an omni-channel environment. As shown in previous studies, channel integration has a positive impact on a firm’s performance through active and innovative transformation of the organization’s hardware and software (Cao & Li, 2015; Yan, Wang, & Zhou, 2010). In particular, this study introduces channel (extension) strategies (number of different types of channels in both online and offline markets) into channel integration as one of the crucial variables, in addition to the two existing variables. The data were collected through a survey targeting mid-level executives or above, within a business unit of Korea’s fashion companies with over $10 million revenue. Through this selection, a total of 120 samples were used in the final analysis. Hierarchical regression modeling was used to prove the study’s hypothesis. The revenue size of a parent company and SBU was used as a control variable in the level 1 model; channel strategies in the level 2 model; organizational structure in the level 3 model, and organization strategic orientation in the level 4 model, which was used as an independent variable. Integrated back-end system and integrated human resource management, which are the highest levels of channel integration (Cao & Li, 2015; Oh, Teo, & Sambamurthy, 2012), have been used as dependent variables. The main findings of this study are as follows: In a back-end system integration model, organization strategic orientation was identified as the highest level when the organizational structure becomes more centralized, whereas the system integration level is the highest when the model is competitor-oriented and innovation-oriented. In the human resource management integration model, the human resource management integration level is at its highest when the organizational structure becomes formalized and specialized, and organization strategic behavior becomes more competitor-oriented and innovation-oriented.

There are a lot of types of wild vegetables such as Colocasia esculenta (L.) Schott stem in Korea. However, the consumption of these wild vegetables is restricted because their storage decreased dramatically after harvest. To maintain original quality of vegetables, pre-treatments such as blanching and drying are important. But conditions for these treatments were still not optimized for many vegetables including Colocasia esculenta (L.) Schott stem. Thus, the objective of this study was to set up an optimal pre-treatment method for freezing storage. Colocasia esculenta (L.) Schott stems were peeled and cut equally (10 cm) for sample preparation. Dried samples (D) were dried at 90℃ for 3 h. Blanched samples (B) were blanched in hot water at 100℃ for 2 min. Blanched and dried samples (BD) were blanched and dried as same protocol. Physicochemical properties were analyzed to evaluate the quality including texture, moisture content, total color difference and viable cell count. Raw sample had 6.85 kg/cm 3 of hardness and 78.75 of chewiness whereas B was 6.83 kg/cm 3 of hardness and 7.8 of chewiness. B had the similar value compared to raw samples. Moisture content of raw sample was 94.4% and that of B was 94.1%, though there were not any significant differences between them. ΔE value of B showed lower value than those of the others. Viable cell counts and total coliforms were not detected after treatment, while raw sample had 5.39 log CFU/g of viable cell count without total coliform. Therefore, pre-treatments are essential for microbial safety of samples. All results considered, it is supposed that blanching is the optimal pre-treatment to sustain its original quality of Colocasia esculenta (L.) Schott stems before freezing.

In order to understand evolutionary characteristics of gene rearrangement in Lepidoptera, we collected all available complete mitogenome (mitogenome) sequences registered in GenBank (274 mitogenomes from 44 families in 23 superfamilies as of August 6, 2015). It turned up six rearrangements that differ from the arrangement of ancestral insects, including that of the gelechioid Mesophleps albilinella that we sequenced in this study. The M. albilinella mitogenome has a unique gene arrangement among the Gelechioidea: ARNESF (the underline signifies an inverted gene) at the ND3 and ND5 junction, as opposed to the ARNSEF that is found in ancestral insects. Most of the rearrangements can be explained by the tandem duplication-random loss model, but inversion, which requires recombination, is also found in two cases, including M. albilinella. Excluding the MIQ rearrangement at the A+T-rich region and ND2 junction, which is found in nearly all Ditrysia, most of the remaining rearrangements found in Lepidoptera appear to be independently derived in that they are automorphic at several taxonomic scales. Current mitogenomic data are limited, particularly for congeneric data. Thus, future research focused on congenerics could clarify evolutionary independency at the generic level also.

Both Nilaparvata lugens Stål and Laodelphax striatellus Fallén has been known as the major rice pests which were irregularly migrated into Korea by wind current from China. We re-arranged and compared the resistance profiles to detect the existence convergent adaptation by using the previously published dataset (N. lugens at 2014, 17:711-716 and L. Striatellus at 2016, 19:247-252 in J. Asia Pac. Entomol., respectively). Both species commonly exhibited the high level of resistance to imidacloprids. Especially, the immigrant populations of L. Striatellus exhibited higher resistance level to indigenous populations, suggesting that they would settle down in Korea with insecticide resistance traits being predisposed. To detect the convergent adaptation to insecticide, pearson correlation analysis were employed by comparing mean dosage of LD50 and resistance ratio to nine insecticides. Strikingly, high and similar dosage responses were observed between the two species with high correlation coefficients of 0.928 (df=7, P <0.001) and 0.950 (df=7, P <0.001), respectively, in the comparison of LD50 vs. resistance ratio. This finding indicates that convergent adaption has occurred in both species through consistent selection by insecticides with similar usage patterns.

Alfalfa weevil (Hypera postica Gyllenhal) belongs to the family Curculionidae, Order Coleoptera and it is one of invasive alien species in Korea. In Korea environment, this species was found in 2000 first time through the Korean quarantine inspections. Although various researches have been studied in the Europe, US, China and Japan, only few research has been performed in Korea. In this study, the life cycle, morphology and the host plants of Alfalfa weevil were investigated in the natural environment. Nine plants of total 28 host plant species known as the host plants were characterized as their wild host plants in Korea (6 and 3 of 9 were naturalized and native plants in Korea, respectively). The geographical distribution was very wide from south (Jeju) to north (Yeoncheon) area of the peninsula and the favorite habitats were park, cultivated and grass land. This species has been found easily anywhere because it takes common leguminous plants such as clover, chinese milk vetch and alfalfa. These results suggest that Alfalfa Weevil can be one of the most-damaging insect pests of leguminous crops when it adapts to Korean climate.

Insect antennae play important roles in finding mates and in locating food source and oviposition sites. Riptortus pedestris is an important pest of soybean and sweet persimmon in Korea. The male R. pedestris adult produce the aggregation pheromone attracting the conspecific nymphs and both sexes of adults. The pheromone was known as a cue for food finding, but the 1st instar nymph can develop to the 2nd instar without food. This phenomenon may suggest that the 1st instar nymph may have different sensilla system from other instars. Thus, we investigated the morphology and distribution of antennal sensilla and antennal response to the aggregation pheromone (AG) of each nymphal stage using Scanning Electron Microscope (SEM) and Electroantennography (EAG). As expected, first instar nymph did not have sensilla trichodea 3 (T3) and chaetica 3 (Ch3) which existed in other instar nymphs. The antennae of the 1st instar nymph did not responded to AG, with no difference from control. For further elucidation of the functions of sensilla T3 and CH3, single sensillum recording to AG will be done.

There is much observational evidence that active star formation is taking place in the Hii regions Sh 2-255 – 257. We present a photometric study of this star forming region (SFR) using imaging data obtained in passbands from the optical to the mid-infrared, in order to study the star formation process. A total of 218 members were identified using various selection criteria based on their observational properties. The SFR is reddened by at least E(B −V ) = 0.8 mag, and the reddening law toward the region is normal (RV = 3.1). From the zero-age main sequence fitting method it is confirmed that the SFR is 2.1 ± 0.3 kpc from the Sun. The median age of the identified members is estimated to be about 1.3 Myr from a comparison of the Hertzsprung-Russell diagram (HRD) with stellar evolutionary models. The initial mass function (IMF) is derived from the HRD and the near-infrared (J, J −H) color-magnitude diagram. The slope of the IMF is about 􀀀 = −1.6 ± 0.1, which is slightly steeper than that of the Salpeter/Kroupa IMF. It implies that low-mass star formation is dominant in the SFR. The sum of the masses of all the identified members provides the lower limit of the cluster mass (169M⊙). We also analyzed the spectral energy distribution (SED) of pre-main sequence stars using the SED fitting tool of Robitaille et al., and confirm that there is a significant discrepancy between stellar mass and age obtained from two different methods based on the SED fitting tool and the HRD.