  The possible formation of tensor condensates originated from a tensor-type
interaction between quarks is investigated in the three-flavor
Nambu-Jona-Lasinio model including the Kobayashi-Maskawa-'t Hooft interaction,
which leads to flavor mixing. It is shown that independent two tensor
condensates appear and a tensor condensate related to the strange quark easily
occurs by the effect of the flavor mixing compared with one related to light
quarks. Also, it is shown that the tensor condensate related to the strange
quark appears at a slightly smaller chemical potential if the
Kobayashi-Maskawa-'t Hooft interaction is included, due to the flavor mixing
effect. It is also shown that the two kinds of tensor condensates may coexist
in a certain quark chemical potential due to the flavor mixing.
