研究方向
1、生物技术 研究内容：实用技术和产品的开发与应用。
（1）生化药物、天然药物的开发应用。
（2）生物成分提取及其在保健品、食品添加剂、化妆品、工农业、生物医学工程上的应用。
（3）生物废弃物的综合利用。
注：（1）在工业如用于制造易降解的一次性食品袋、饭盒等。（2）在农业上如用于喷洒使植物生长快、成熟好、子粒饱满的成分。（3）在生物医学工程上如用于制造易被人体吸收的人造缝合线、人造骨、人造皮肤、血管粘合剂等。
（4）生物废弃物如用人尿提取种种酶、多肽，人参茎叶提取人参皂甙、多糖等。
2、应用微生物和菌种选育研究内容
：对工业用抗生素菌株原生质体的处理（包括宇宙射线等的处理），通过原生质体的再生，融合等方法来提高菌种的发酵单位。开发在宇宙空间能生长的实用菌等的产品。
3、蛋白质结晶成长研究内容：
（1）核成长的控制通过对基板表面的修饰和改造来控制蛋白质分子的排列和凝聚，达到控制核的形成和成长。
（2）蛋白质结晶成长的机理 利用原子力显微镜，在分子水平上研究结晶表面的形态变化和成长速度以及对流等对结晶成长的影响，阐明微重力环境对蛋白质结晶成长影响的机理。
研究成果
1.Long Rong and Hiroshi Takeuchi “Protein Extraction by Reverse Micelles of Dialkyl Thiophoric Acids” Proceedings of the 5th world congress of chemical engineering (1996 USA) AIChE, Vol. II, 593-598.
2.Long Rong, Takashi Yamane and Hiroshi Takeuchi “A New Reversed Micellar System from Di(2-Ethylhexyl) Phosphorothioic Acid: Its Application to Extraction of Hemoglobin” J. Chem. Eng. Japan, Vol.31, No.3, (1998) 434-439.
3.Long Rong, Takashi Yamane and Hiroshi Takeuchi “Characteristics of Mixed Reversed Micelles from Termary Surfactant with Di(2-Ethylhexyl) Tails” J. Chem. Eng. Japan, Vol.32, No.3, (1999) 530-534.
4.Long Rong, Takashi Yamane and N.Niimura “Measurement and control of the crystal growth rate of tetragonal hen egg-white lysozyme imaged with an atomic force microscope” J. Crystal growth 217 (2000) 161-169.
5.Takashi Korenaga, Tamao, Odake, Yasunari Ono and Long Rong “Development of a gas absorption microchip using porous glass and its evaluation for analytical application” Bunseki Kagaku, Vol.49 No.6 (2000) 423-427.
6.Long Rong, Hiroshi Komatsu, Makoto Nastuisaka and Shinichi Yoda “Epitaxial Nucleation of Protein Crystal on Poly-L-Lysine Modified Surface” Jpn. J. Appl. Phys. Vol.40 (2001) 6677-6688.
7.Long Rong, Hiroshi Komatsu, Shinichi Yoda “Control of heterogeneous nucleation of lysozyme crystal by using Poly-L-Lysine modified substrate” J. Crystal Growth 235 (2002) 489-493.
8.L.Rong, I.Yoshizaki, H.Komatsu, A.Kadowaki, S.Fukuyama, Y.Limura and S.Yoda “Effect of solution flow on the protein crystal growth” J. Jpan. Soc. Microgravity Appl, 20 No.2 (2003) 128-131.
9.Long Rong, Izumi Yoshizaki, Hiroshi Komatru and Shinichi Yoda “Protein crystallization by using porous glass substrate” J. Synchrotron Radiation (2004) 11, 27-29.
10.A. Kadowaki, I. Yoshizaki, L. Rong, H. Komastu, O. Odawara, S. Yoda “The improvement of protein crystal quality by using forced solution flow” J. Synchrotron Radiation (2004) 11, 38-40.
11.Y. Iimura, I. Yoshizaki, L. Rong, S. Adachi, S. Yoda, H. Komatsu, “Development of a reusable protein seed crystal processed by chemical cross-linking” Journal of Crystal Growth 275 (2005) 554-560.
12.Yoshizaki, S. Fukuyama, H. Koizumi, M. Tachibana, K. Kojima, Y. Matsuura, M. Tanaka, N. Igarashi, A. Kadowaki, L. Rong, S. Adachi, S. Yoda, and H. Komatsu “Impurity induced defect and its effect on protein crystal perfection” Journal of Crystal Growth 290 (2006) 185-191.
