Tokyo Metropolitan Hygiene Institute: Morozumi et al
Tokyo Metropolitan Market Inspection Section
(Bureau of Social Welfare & Public Health) : Suzuki et al

Solution to fungi contamination mechanism and measures of prevention

Found antibacterial compounds. Antibacterial activities were promoted by citral and citronellal. However, its activities are not strong enough. Per further tests revealed the existence of C15H22O (nootkatone). With concentration of 500 μg/mL, nootkatone inhibited 90% of growth of P. digitatum and F. oxysporum and inhibited the growth of P. italicum and G. candidum completely. Nootkatone was detected from Amanatsu, Iyokann, and Hassaku as well as GF.