Kyung Hee University · Psychology
Professor Ji Young Cho's research lab specializes in natural product discovery and marine bioprospecting, focusing on the isolation, structural elucidation, and biological evaluation of novel bioactive compounds from marine-derived microorganisms such as actinomycetes and Streptomyces. The lab integrates advanced spectroscopic techniques—including NMR, X-ray crystallography, and MS—along with chemical derivatization and stereochemical analysis (e.g., Mosher’s method) to determine complex molecular structures. Research directions include the biosynthesis of unique ring systems, cytotoxicity screening of peptides and polyketides, and the development of eco-friendly algaecidal agents for controlling harmful algal blooms. The lab also explores the intersection of sensory design and consumer behavior in luxury retail environments, highlighting the symbolic role of aesthetics in brand perception.
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Although grounded theory and qualitative content analysis are similar in some respects, they differ as well; yet the differences between the two have rarely been made clear in the literature. The purpose of this article was to clarify ambiguities and reduce confusion about grounded theory and qualitative content analysis by identifying similarities and differences in the two based on a literature review and critical reflection on the authors’ own research. Six areas of difference emerged: (a) ba
A novel meroterpenoid, azamerone, was isolated from the saline culture of a new marine-derived bacterium related to the genus Streptomyces. Azamerone is composed of an unprecedented chloropyranophthalazinone core with a 3-chloro-6-hydroxy-2,2,6-trimethylcyclohexylmethyl side chain. The structure was rigorously determined by NMR spectroscopy and X-ray crystallography. A possible biosynthetic origin of this unusual ring system is proposed. [structure: see text]
Four new 3-methyl-4-ethylideneproline-containing peptides, lucentamycins A-D (1-4), have been isolated from the fermentation broth of a marine-derived actinomycete identified by phylogenetic methods as Nocardiopsis lucentensis (strain CNR-712). The planar structures of the new compounds were assigned on the basis of 1D and 2D NMR spectroscopic techniques, while the absolute configurations of the amino acid residues were determined by application of the advanced Marfey method. Lucentamycins A (1)
A retail store space in luxury fashion functions as a critical marketing point communicating the brand’s intended image. This study explores the symbolic effect of aesthetic factors of retail atmosphere in luxury, focusing on the impact of perceived luxury of interior colors in retail atmosphere on perceived store luxury, consumer emotion, and preference. A total of 218 U.S. consumers participated in an online survey, employing a hypothetical store image reflecting a high- or low-luxury retail a
Two new polyketides, actinofuranones A (1) and B (2), were isolated from the culture extract of a marine-derived Streptomyces strain designated CNQ766. The structures of 1 and 2 were elucidated by interpretation of NMR and other spectroscopic data and by chemical derivatization. The relative stereochemistries of these new molecules were assigned on the basis of analysis of NOE data and vicinal (1)H-(1)H coupling constants, while the absolute configurations of the asymmetric centers were determin
The KNS-16 algicidal strain was isolated from a harmful alga bloom (HAB) area and identified as Alteromonas sp. based on 16S rDNA sequencing. The KNS-16 strain was found to control HABs by producing algicidal compounds in an indirect interaction. Four active compounds were isolated from KNS-16 culture, and their structures were analyzed by interpreting nuclear magnetic resonance and mass spectroscopy data. The structures were identified as 2-undecen-1'-yl-4-quinolone (1), 2-undecyl-4-quinolone (
An active antifouling diterpene was isolated from marine actinomycete strain PK209 and productivity was induced in a co-culture experiment. The active constituent was identified as the diterpene lobocompactol by interpretion of nuclear magnetic resonance and mass spectroscopy data. A PK209 co-culture was designed and a lobocompactol-resistant bacterium, KNS-16, was selected as co-culture competitor to induce lobocompactol production. Adding a small volume of 16-h-old KNS-16 culture to the 96-h-o
Marine derived actinomycetes constituting 185 strains were screened for their antifouling activity against the marine seaweed, Ulva pertusa, and fouling diatom, Navicula annexa. Strain 291-11 isolated from the seaweed, Undaria pinnatifida, rhizosphere showed the highest antifouling activity and was identified as Streptomyces praecox based on a 16S rDNA sequence analysis. Strain 291-11 was therefore named S. praecox 291-11. The antifouling compounds from S. praecox 291-11 were isolated, and their
Color is a significant interior element with the power to influence emotions and behaviors in a particular environment. Numerous studies have investigated the impact of a single color on emotion; however, the collective emotional, cognitive, and behavioral effect created by combinations of colors applied to a space has not been thoroughly investigated. In this study involving both a survey as well as eye-tracking technology, we explored shaping the concept of spatial color efficacy by examining
A cutaneously mounted DRF overlying the sacral hiatus provides accuracy in intraoperative 3D image guided navigation for mini-open TLIF that is comparable to that obtained in other reported series using a fixed bony attachment point for the DRF.
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