Composting apples with some kind of disease?

One of our apple trees produced many apples with some kind of core malfunction. I've tried to search for what it could be but haven't found a definitive answer. Attaching an image of the apples.
I want to add those apples to one of the compost projects we run that does not guarantee reaching 70°C temperature, to kill off potential harmful entities. But I'm also not planning to use that compost for the apple trees, so I'm thinking if that mold, or whatever it is, is only attacking apples, I might get away with it.
Hoping someone could advise on what happened to the apples and whether it's ok to compost them.
Our plastic compost bin, with the lid on the bottom, is too small to take all the apples, so I'm planning to throw them together with other materials in a more traditional three wall heap.

Also, this is my first post, been reading the forum for a while, excited to finally join!

What you might have is core rot.

Core rots have been controlled with fungicides. Apples riper than normal at harvest may have a high incidence of infection and should not be stored.

https://extension.psu.edu/apple-disease-core-rot

There are recipes here for a non-toxic fungicide:

https://permies.com/t/93537/toxic-Fungicide

About composing the apples, it is my understanding that a hot compost will kill most disease.

That apple looks interesting, Skog! I did an internet search and it appears some freak apples do just have seedless cores, so if the apple looks otherwise fine, it may not be an issue.

In my (limited!) experience, apple maggots, codling moth, and core rot, common causes of core damage in apples, mostly leave brown debris, which your photo doesn't show.

Hubby has been bringing me windfall apples from our neighbours' tree, and most have had varying degrees of core rot, which looks just like the brown centre to the apple in the link Anne provided (thank you, Anne, for showing me  what that is!). But yours don't look like that.

Added - my guess is that they probably can't be stored as they are without rotting fast, but should be safe to cook up in some way that cuts the apple open, removes any damaged areas, and cooks them thoroughly. Making applesauce, for example.

Jane Mulberry wrote:That apple looks interesting, Skog! I did an internet search and it appears some freak apples do just have seedless cores, so if the apple looks otherwise fine, it may not be an issue.

In my (limited!) experience, apple maggots, codling moth, and core rot, common causes of core damage in apples, mostly leave brown debris, which your photo doesn't show.

They definitely have seeds in normal conditions. I don't know the name of the variety, but we've harvested great amounts and quality for three seasons since we took over the property.

And yeah, no maggot holes, so a lot points to core rot, although can't find pictures online that looks exactly like our apples 😅

It's strange! Please let us know if you discover more about what might have caused this.

Welcome to Permies!
It does look to me too as if the fruit have just not produced seeds for some reason....If it were mine I would probably just assume that the weather had not been right at the time and be grateful to get apples (I think I have 10 this year!). Were all your other apple varieties normal? Were the fruit smaller than usual?

If you have free wood heat, giving them a good boil is a practical way to knock down pathogens before composting.

Rare the apple that has not something wrong with them. Apples are 75 cents where i live. A piece, biological ones. You still don't know if that's true though. And what they might have sprayed on them.
I'm scanning for apples, to take cuttings from where i live and have spotted one spotless one, it's very acidic, i guess insects don't find it interesting therefore, when insects don't find it interesting, less fungus for sure.
There has been a research into apple scabs and turns out the tree pumps them full of antioxidants that help prevent cancer.
So to me, the choice is quite simple, eating apples a euro a piece getting ill, or fiddling a bit with my own.
I try to get trees that are keepers and ones that flower late and give ripe fruit off season.
Learning to graft is helpful too.

Nancy Reading wrote:Welcome to Permies!
It does look to me too as if the fruit have just not produced seeds for some reason....If it were mine I would probably just assume that the weather had not been right at the time and be grateful to get apples (I think I have 10 this year!). Were all your other apple varieties normal? Were the fruit smaller than usual?

Thank you for the welcome!
The other varieties were fine, the fruit normal size.

I would compost them. Composting is very good at breaking down pathogens. You can also feed them to animals, or just throw them around non-apple crops to rot down.