* Education

- Graduated from Pukyong National University (2007.02)

- Graduated from Pukyong National University (2009.02)

- Graduated from Pukyong National University (2013.08)

* Career experience

- 2009. 01 ~ 2012. 03 Fermentation and Production of Glucan Extracellular Polysaccharide

- 2010.03 ~ 2013.08 Doctoral degree in Biological Engineering

- 2013.09 ~ 2017.08 Department of Biological Engineering Podak and Biotechnology Department Lecturer

- 2017.09 ~ 2013.03.31 Pukyong National University Marine Life Research Institute full-time researcher

- Assistant Professor, Department of Food Science and Biotechnology, Hankyong National University

 *Research Results (Thesis)

1) Phunlap Sirisuk, Chae Hun Ra, Gwi-Taek Jeong, Sung-Koo Kim, 2018. Effects of wavelength mixing ratio and photoperiod on microalgal biomass and lipid production in a two-phase culture system using LED illumination. Bioresour. Technol. 253, 175-181. SCI, IF=5.651

2) Chae Hun Ra, Phunlap Sirisuk, Jang-Hyun Jung, Gwi-Taek Jeong, Sung-Koo Kim, 2017. Effects of light-emitting diodes (LED) with a mixture of wavelengths on the growth and lipid content of microalgae. Bioprocess Biosyst. Eng. https://doi.org/10.1007/s00449-017-1880-1, SCI, IF=1.901

3) Chae Hun Ra, Gwi-Taek Jeong, and Sung-Koo Kim, 2017. Hyper-thermal acid hydrolysis and adsorption treatment of red seaweed, Gelidium amansii  for butyric acid production with pH control. Bioprocess Biosyst. Eng. 40, 403-411, SCI, IF=1.901.

4) Trung Hau Nguyen, Chae Hun Ra, Mi-Ra Park, Gwi-Taek Jeong, and Sung-Koo Kim, 2017. Bioethanol production from seaweed Undaria pinnatifida using various Yeasts by separate hydrolysis and fermentation(SHF). Microbiol. Biotechnol. Lett. 44, 529-532, Scopus.

5) Trung Hau Nguyen, Chae Hun Ra, InYung Sunwoo, Gwi-Taek Jeong, and Sung-Koo Kim, 2017. Bioethanol production from Gracilaria verrucosa using Saccharomyces cerevisiae adapted to NaCl or galactose. Bioprocess Biosyst. Eng. 40, 529-536, SCI, IF=1.901.

6) Chae Hun Ra, Min Ji Kim, Gwi-Taek Jeong, Sung-Koo Kim, 2017. Efficient utilization of Eucheuma denticulatum hydrolysates using an activated carbon adsorption process for ethanol production in a 5-L fermentor. Bioprocess Biosyst. Eng. 40, 373-381. SCI, IF=1.901.

7) In Yung Sunwoo, Jung Eun Kwon, Trung Hau Hguyen, Chae Hun Ra, Gwi-Tack Jeong, Sung-Koo Kim. 2017. Bioethanol production using waste seaweed obtained from Gwangalli Beach, Busan, Korea by co-culture of yeasts with adaptive evolution. Appl. Biochem. Biotechnol.    183, 966-979. SCI, IF=1.751

8) Trung Hau Nguyen, Chae Hun Ra, In Yung Sunwoo, Pailin Sukwong, Gwi-Taek Jeong, Sung-Koo Kim, 2017. Bioethanol production from soybean residue via separate hydrolysis and fermentation. Appl. Biochem. Biotechnol. DOI: 10.1007/s12010-017-2565-6. SCI, IF=1.751

9) In Yung Sunwoo, Trung Hau Nguyen, Chae Hun Ra, Gwi-Taek Jeong, Sung-Koo Kim, 2017. Acetone-Butanol-Ethanol production from waste seaweed collected from Gwangalli Beach, Busan, Korea, based on pH-controlled and sequential fermentation using two strains. Appl.     Biochem. Biotechnol. DOI: 10.1007/s12010-018-2711-9. SCI, IF=1.751

10) Sang Won Kim, Seung Hee Gwak, Chae Hun Ra, Sung-Koo Kim, 2017. Bioethanol production from the red seaweed Eucheuma denticulatum. Microbiol. Biotechnol. Lett. 45, 316-321. Scopus.

11) Chae Hun Ra, Chang-Han Kang, Jang-Hyun Jung, Gwi-Taek Jeong, Sung-Koo Kim, 2016. Enhanced biomass production and lipid accumulation of Picochlorum atomus using light-emitting diodes (LEDs). Bioresour. Technol. 218, 1279-1283. SCI, IF=5.651

12) Chae Hun Ra, Chang-Han Kang, Jang-Hyun Jung, Gwi-Taek Jeong, Sung-Koo Kim, 2016. Effects of light-emitting diodes (LEDs) on the accumulation of lipid content using a two-phase culture process with three microalgae. Bioresour. Technol. 212, 254-261. SCI, IF=5.651 

13) Chae Hun Ra, In Young Sunwoo and Sung-Koo Kim, 2016. Bioethanol Production from Macroalgal Biomass. Journal of Life Science 26, 976-982. 

14) Chae Hun Ra, Sung-Koo Kim, 2016. Bioethanol Production from Seaweed Kappaphycus alvarezii by Simultaneous Saccharification and Fermentation. Microbiol. Biotechnol. Lett. 44, 145-149, Scopus.

15) Chae Hun Ra, Trung Hau Nguyen, Gwi-Taek Jeong, and Sung-Koo Kim, 2016. Evaluation of hyper thermal acid hydrolysis of Kappaphycus alvarezii for enhanced bioethanol production. Bioresour. Technol. 26, 1264-1271. SCI, IF=5.651.

16) In Yung Sunwoo, Chae Hun Ra, Gwi-Taek Jeong, and Sung-Koo Kim, 2016. Evaluation of ethanol production and bioadsorption of heavy metals by various red seaweeds. Bioprocess Biosyst. Eng. 39, 207-217. SCI, IF=1.901.

17) Chae Hun Ra, Yeong Jin Kim, Sang Yoon Lee, Gwi-Taek Jeong, and Sung-Koo Kim, 2015. Effects of galactose adaptation in yeast for ethanol fermentation from red seaweed, Gracilaria verrucosa. Bioprocess Biosyst. Eng. 38, 1715-1722. SCI, IF=1.901

 18) Chae Hun Ra, Jang Hyun Jung, In Young Sunwoo, Chang Han Kang, Gwi-Taek Jeong, and Sung-Koo Kim, 2015. Detoxification of Eucheuma spinosum  hydrolysates with activated carbon for ethanol production by the salt-tolerant yeast Candida tropicalis. J. Microbiol. Biotechnol.      25, 856-862. SCIE, IF=1.685.

19) Chae Hun Ra, Jin Gyu Choi, Chang-Han Kang, In Yung Sunwoo, Gwi-Taek Jeong, and Sung-Koo Kim, 2015. Thermal acid hydrolysis pretreatment, enzymatic saccharification and ethanol fermentation from red seaweed, Gracilaria verrucosa. Microbiol. Biotechnol. Lett. 43, 9-15. Scopus.

20) Gwi-Taek Jeong, Chae Hun Ra, Yong-Ki Hong, Joong Kyun Kim, In-Soo Kong, Sung-Koo Kim, Don-Hee Park, 2015. Conversion of red-algae Gracilaria verrucosa to sugars, levulinic acid and 5-hydroxymethylfurfural. Bioprocess Biosyst. Eng. 38, 207-217. SCI, IF=1.901.

21) Chae Hun Ra, Jang Hyun Jung, In Yung Sunwoo, Gwi-Taek Jeong, and Sung-Koo Kim, 2015. Enhanced ethanol production by fermentation of Gelidium  amansii hydrolysate using a detoxification process and yeasts acclimated to high-salt concentration. Bioprocess Biosyst. Eng.      38, 1201-1207. SCI, IF=1.901.

22) Chae Hun Ra, Chang-Han Kang, Na Kyoung Kim, Choul-Gyun Lee, Sung-Koo Kim, 2015. Cultivation of four microalgae for biomass and oil production using a two-stage culture strategy with salt stress. Renew. Energy. 80, 117-122. SCIE, IF=4.357.

23) In Yung Sunwoo, Chae Hun Ra, Seong Jin Kwon, Ji Hee Heo, Ye-Jin Kim, Ji Woo Kim, Ji Ho Shin, En-Ju Ahn, Yu Kyeong Cho, and Sung-Koo Kim, 2014. Ethanol production from red, brown and green seaweeds and biosorption of heavy metals by waste seaweed slurry from ethanol production. KSBB Journal. 29, 414-420. 

24) Chae Hun Ra, Chang-Han Kang, Gwi-Taek Jeong, and Sung-Koo Kim, 2014. Bioethanol production from the waste product of salted Undaria pinnatipida  using laboratory and pilot development unit (PDU) scale fermenters. Biotechnol. Bioproc. Eng. 19, 984-988. SCIE, IF=1.211.

25) Hye young Cho, Chae-Hun Ra, and Sung-Koo Kim, 2014. Ethanol production from the seaweed Gelidium amansii, using specific sugar acclimated yeasts. J. Microbiol. Biotechnol. 24, 264-269. SCIE, IF=1.685. 

26) Chae Hun Ra, Gwi-Taek Jeong, Myung Kyo Shin, Sung-Koo Kim, 2013. Biotransformation of 5-hydroxymethylfurfural (HMF) by Scheffersomyces stipites during ethanol fermentation of hydrolysate of the seaweed Gelidium amansii. Bioresour. Technol. 140, 421-425. SCI, IF=4.917. 

27) Chae Hun Ra, Sung-Koo Kim, 2013. Optimization of pretreatment conditions and use of a two-stage fermentation process for the production of ethanol from seaweed, Saccharina japonica. Biotechnol. Bioproc. Eng. 18,715-720. SCIE, IF=1.211. 

28) Hye jin Kim, Chae Hun Ra, and Sung-Koo Kim, 2013. Ethanol production from seaweed (Undaria pinnatifida) using yeast acclimated to specific sugars. Biotechnol. Bioproc. Eng. 18, 533-537. SCIE, IF=1.211. 

29) Chae Hun Ra, Hyeon Jun Lee, Myung Kyo Shin, and Sung-Koo Kim, 2013. Bioethanol production from seaweed Gelidium amansii for Separate Hydrolysis and Fermentation (SHF). KSBB Journal. 28, 282-286. 

30) Min-Ji Kim, Jung-Soo Kim, Chae Hun Ra, and Sung-Koo Kim, 2013. Bioethanol production from Eucheuma spinosum using various yeasts. KSBB Journal. 28, 315-318. 

31) Chae Hun Ra, Sung-Jun Park, Ki-Hong Kim, Sung-Koo Kim, 2010. Production of recombinant ghost bacterial vaccine against streptococcal disease of olive flounder. Process Biochemistry. 45, 317-322. SCI, IF=2.497.

32) Chae Hun Ra, Yeong-Jin Kim, So-Jin Park, Chang-Wha Jeong, Yoon-Kwon Nam, Ki-Hong Kim, Sung-Koo Kim, 2009. Evaluation of optimal culture conditions for recombinant ghost bacteria vaccine production with the antigen of Streptococcus iniae GAPDH. Journal of Microbiology and Biotechnology. 19, 982-986. SCIE, IF=1.685.

33) Chae Hun Ra, Yeong-Jin Kim, Sung-Koo Kim, 2009. Evaluation of optimal condition for recombinant bacterial ghost vaccine production with four different antigens of Streptococcus iniae-enolase, GAPDH, sagA, piaA. Korean Journal of Life Science. 19, 845-851.

34) Chae Hun Ra, Ki Myong Kim, Sung Jae Lee, Sung-Koo Kim, 2008. Optimization of PS-7 production process by Azotobacter indicus var. myxogenes L3 using the control of carbon source composition. Kor. J. Microbiol. Biotechnol. 36, 61-66. 

35) Chae Hun Ra, Ki Myong Kim, Mi Ran Choi, Sung-Koo Kim, 2008. Optimization of the medium composition for heteropolysaccharide-7 production by Beijerinckia indica L3 using response surface methodology. Kor. J. Microbiol. Biotechnol. 18, 162-166.