Why does clear apple juice become cloudy?

[Epimetheus]

I started with a gallon of clear apple juice with no preservatives and it became very cloudy one day after fermentation began, and has not cleared at all after fermenting one week. This surprised me. I did not expect it to become opaque by using clear juice.

Is the cloudiness from pectin or from the yeast?

 

[paperairplane]

Yeast - give it a month or two it'll clear.

 

[Epimetheus]

Thank you, I will put it some place out of sight and forget it for a month.

A little cloudy is OK, this went from crystal to mud in 24 hours.

 

[myndflyte]

The yeast are very promiscuous and like to get all over the place.

 

[Cheesy_Goodness]

Don't worry about clarity when fermenting, even if it looks like mud. The yeast like to swim around to get their food, so even if you could somehow pour unfermented apple juice on top of a yeast cake without disturbing it, the yeast will still swim around on their own and help themselves to the buffet.

 

[fuelish]

Yeah, they're dirty lil bassturds, but, give 'em enough time, they'll clean up after themselves

 

[forestbeekeeper]

I think some of that cloudiness is starch. It can be clarified later.

Did you check the starch-to-sugar ratio of the apples?