Kokeilin värjätä 100g lankaa, kaksi n 10 minuutin dippausta, mutta väristä tuli hyvin vaalea turkoosi (samanlaista väriä tulee tavallisesti melkein loppuunkuluneesta liemestä) eli kaikki indigo mitä liemessä varmastikin oli, ei ollut pelkistynyt kunnolla. Kuitenkin hedelmäsokeri toimii periaatteessa myös morsingon kanssa, vaikkakaan väristä ei vielä tällä kertaa tullut kovin hyvää. En heittänyt lientä pois, vaan odotan josko pelkistymistä tapahtuisi lisää hitaasti ajan kanssa.
Couple of days ago I tried how fructose vat would work with woad. About my earlier experiments with indigo and fructose here. I had 600g of fresh leaves, that is the same amount/100g of yarn I had used in the previous posting and gotten good blue. The extraction was done like I do it usually, and the vat looked good dark green after oxydizing. pH was 9 and I had used washing soda to raise the pH. The vat was about 6 litres, I hadn't measured it exactly.
The temperature was about 50°C when I added one tablespoonful of madder and 30grams of fructose to the vat, but even though I waited until evening, nothing happened in the vat. Next day I thought that perhaps the pH was too low, so I added 20grams of slaked lime to the vat to raise the ph to 11, and very soon something started to happen in vat. Bubbles and after two hours the color was yellowish green and on the surface there was a thin coppery sheen, although not so good as when using hydrosulfit.
I dyed 100grams of yarn, two 10 minute dips but the color became very pale slightly uneven turqoise (I get this color often when the bath is almost exhausted), so the indigo that I know that is in the vat had not reduced properly. Anyway, in principle the fructose seems to work with fresh woad vat. I haven't thrown the vat away, I'm waiting to see if it just reduces slowly and takes more time.