Author

Sang Un Park

Department of Crop Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea

8 articles in our journals

Articles where this person is an author, newest first. People are matched by their name as printed (no ORCID iD is recorded for them), not by name alone; search the name as text to find namesakes too.

Research ArticleOpen accessContent of Phenolic Compounds of Different Organ in Pimpinella brachycarpa Collected from Different Locations in KoreaNam Su Kim, Dae Hui Jung, Kwon Seok Jeon et al.Pimpinella brachycarpa (Kom.) Nakai, reported to have antioxidant activity, is one of the most favored edible greens grown in Asian regions. The present study explores the variation in phenolic compounds in P. brachycarpa collected from different locations in Korea. Six phenolic compounds, i.e., catechin hydrate, chlorogenic acid, ferulic acid, benzoic acid, rutin and quercetin, were detected in the leaves, whereas … …OnLine Journal of Biological Sciences, Vol. 20, Issue 2 · 28 May 2020 · 7,619 accessesView PDF Cite

Research ArticleOpen accessBlue and White LED Lights Enhance Biosynthesis of Rosmarinic Acid in Cell Culture of Agastache rugosaWoo Tae Park, Sun Kyung Yeo, Nam Su Kim et al.Agastache rugosa, an herbaceous Korean perennial, contains pharmacologically important phenylpropanoids such as tilianin and rosmarinic acid. However, the knowledge of biosynthesis of phenylpropanoids from A. rugosa is limited. Therefore, a study was conducted to develop an efficient protocol for in vitro regeneration of A. rugosa and to investigate the influence of three different LED light wavelengths (white, blue and red) … …OnLine Journal of Biological Sciences, Vol. 20, Issue 2 · 24 May 2020 · 6,865 accessesView PDF Cite

Research ArticleOpen accessDiosgenin Biosynthesis in the Sprouts of Fenugreek as Influenced by ChitosanDo Yeon Kwon, Jae Kwang Kim, Sang Un ParkTrigonella foenum-graecum L. (Fabaceae), known as Fenugreekis an annual herb, contains various secondary metabolites including steroidal saponins, flavonoids, phenolic compounds and alkaloids. This study was planned to investigate the effect of concentrations of chitosan on growth, expression of diosgenin biosynthetic genes and diosgenin accumulation in sprouts of T. foenum-graecum. Results revealed that there is no positive response of chitosan in … …OnLine Journal of Biological Sciences, Vol. 19, Issue 2 · 2 May 2019 · 7,520 accessesView PDF Cite

Research ArticleOpen accessEnhancing Astragaloside Production in Astragalus membranaceus through Growth Media and AuxinsYun Ji Park, Jae Kwang Kim, Sang Un ParkThe secondary metabolites of triterpenoid saponins, isoflavonoids and polysaccharides are present in Astragalus membranaceus those are biologically active. Astragalosides are a major group of identified compounds that have various pharmacological properties. The present study was considered to enhance astragaloside biosynthesis in hairy root cultures of A. membranaceus by using different growth media and concentrations of different auxins. Our findings revealed … …OnLine Journal of Biological Sciences, Vol. 18, Issue 2 · 25 Jan 2018 · 7,887 accessesView PDF Cite

Research ArticleOpen accessEnhancement of in vitro Rooting through Growth Media, Gelling Agents and Activated Charcoal in Lycium chinenseJae Kwang Kim, Sang Un ParkLycium chinense, a traditional Chinese herbal medicine is well known for its medicinal value and composition for centuries in Asia. Plant tissue culture technique has proven as a quick and sustainable ways to regenerate various plants species those are valuable in terms of medicinal as well as ornamental. Here, we investigated the in vitro root regeneration and root growth of … …OnLine Journal of Biological Sciences, Vol. 17, Issue 3 · 26 Jun 2017 · 7,270 accessesView PDF Cite

Research ArticleOpen accessResponses of Rice to Green Manure and Nitrogen Fertilizer ApplicationMd Safiqul Islam, Nitish Kumar Paul, Md Robiul Alam et al.The effect of green manure and nitrogen fertilizer applications on rice performance and post-harvest nutrient status of the soil was studied at the Regional Wheat Research Station of Bangladesh Agricultural Research Institute (BARI), Shyampur, Rajshahi, Bangladesh. The experiment comprised two sets of treatments: (i) green manure application (Crotalaria jusncea, Sesbania aculeata, Sesbania rostrata,Vigna radiata, and Phaseolus mungo) and (ii) application … …OnLine Journal of Biological Sciences, Vol. 15, Issue 4 · 1 Sep 2015 · 7,976 accessesView PDF Cite

Research NotesOpen accessSubcellular Localization Studies of Three Phenylalanine Ammonia-Lyases and Cinnamate 4-Hydroxylase from Scutellaria Baicalensis Using GFP Fusion ProteinsNam Il Park, Hui Xu, Mariadhas Valan Arasu et al.The localization of three phenylalanine ammonia-lyases (PAL1, -2 and -3) and Cinnamate 4-Hydroxlase (C4H) of Scutellaria baicalensis was examined in onion epidermal cells. These genes encode key enzymes in the phenylpropanoid pathway for the synthesis of flavones. In our previous research, we isolated coding DNA for these genes from S. baicalensis, a medicinal herb rich in flavones with biological and … …OnLine Journal of Biological Sciences, Vol. 15, Issue 2 · 13 Jun 2015 · 7,457 accessesView PDF Cite

Research ArticleOpen accessEnhancement of in Vitro Rooting By Gelling Agents and Activated Charcoal in Rehmannia Glutinosa L.Aye Aye Thwe, Hyun Ho Kim, Haeng Hoon Kim, Sang Un ParkPlant tissue culture has proven to be commercially important for the replication of various plants species, including medicinal and ornamental plants. This technique has been used extensively in research for applications in agriculture and forestry. This study examines the effect of activated charcoal and the relative effectiveness of Gelrite compared to Phytagar. The number of roots per explant (8.2) and … …OnLine Journal of Biological Sciences, Vol. 15, Issue 2 · 12 Jun 2015 · 7,106 accessesView PDF Cite