1. Department of Agricultural Sciences, University of Bologna, Bologna, Italy
2. Yakult Honsha European Research Center for Microbiology ESV, Technologie Park 4, 9052 Zwijnaarde, Belgium
3. Yakult Central Institute, 5–11 Izumi, Kunitachi, Tokyo 186-8650, Japan
4. Institute of Earth Systems, Division of Rural Sciences & Food Systems, University of Malta, Msida, Malta
5. Department of Animal Science and Technology, National Taiwan University, No. 50, Lane 155, Sec. 3, Keelung Rd, Taipei 10673, Taiwan ROC