We present the results of a highly sensitive (~10 mK rms) survey toward the central parts of 22 barred spiral galaxies in 12CO(1-0) line using the NRAO 12m telescope at Kitt Peak. Seven of the target galaxies were detected in CO; NGC 3686 has been detected with CO for the first time. We estimated central CO fluxes of 50~1000 Jy km s-1 and molecular gas masses of 107~108 M⊙ for those galaxies.

• Myung-Hyun Rhee(Yonsei University Observatory, Yonsei University)
• Hyo-Ryoung Kim(Taeduk Radio Astronomy Observatory)
• Chang-Won Lee(Korea Astronomy & Space Science Institute)
• Min-Young Lee(Department of Astronomy, Yonsei University)