朝、外は零下12度、藍建液温25〜28度、３面ガラスの染場の室温は曇れば7度、晴れれば日中18~20度になる。積雪１m、ガラスの向こうに氷柱、雪が舞う。乳白色のフランス オクシタニー地域産羊毛布を藍建液に浸けると、インジゴが藍還元菌によって還元された水溶性のロイコインジゴにより、緑色に染まる。その布を液から取り出すと、徐々に空気中の酸素で酸化して不溶性のインジゴに変わり、藍色になる。冬は色のコントラストが強い。
In the morning, the outside temperature is -12 degrees Celsius, the indigo liquid temperature is 25 to 28 degrees Celsius, and the room temperature of the dyeing place with glass on three sides is 7 degrees Celsius when it is cloudy and 18-20 degrees Celsius in the daytime when it is sunny. There is 1m of snow outside, and icicles and snow dance behind the glass. Milky white woolen cloth from the Occitanie region of France is dyed green by the water-soluble leuco indigo reduced by indigo reducing bacteria. When the cloth is removed from the indigo liquid, it gradually oxidizes with oxygen in the air and turns into indigo, which turns indigo. Color contrast is strong in winter.
