How do we extract Sugar or custard apple seeds??...?

Question

Just please don't mention about grinding...

it cauz we don't have grinder....

Any refences will help...

thank you gals and guys....

Answer 1

Hmm, I'm not entirely sure what you are asking - are you asking how to remove the seeds from the fruit, or how to remove something from the seeds?  If it is the second one, then what are you trying to remove from the seeds?

I'll guess that you are trying to remove oil from the seeds to test it as a fuel or for cooking.  I can think of two ways:  grinding or heating.  

To grind the seeds, you don't really need a grinder.  If you can crush the seeds between any two items, it will work.  For example, if you have a rolling pin and a board, I think it would work.  Then collect the crushed seeds in a can with holes in the bottom and smash them down to force the oil out the holes - or maybe just let it sit overnight to see if oil drips out.  You can try several ways using anything you can think of to find what works best.

For heating the seeds, you can try warming them in a wok or frying pan.  Probably it will work better if the seeds are split, and not warmed too much = you want the oil to get out of the seeds, but not to evaporate.  I'm not sure this will work, but if you talk to your mom, maybe she will know how to approach this from her cooking experiences.  BUT:  be careful to wash the pans very, very well with soap afterwards because the sites say that the seeds are poisonous.  Actually, be careful handling the oil and such for the same reason!

If it isn't oil you want from the seeds, then I am not sure what you might do since you haven't said what you want to extract.

Lastly, if you simply want to remove the seeds from the fruit, from the links it looks like you could just push the fruit through a sieve or fine wire mesh to get the edible pulp away from the hard seeds.

Incidentally, from the links it looks like there are several similar fruits that are called custard apples and sugar apples.  It might help your project if you knew exactly which species you were working with.

If this isn't helpful, perhaps you can e-mail the person at the Center for New Crops & Plant Products at Purdue and ask for help?  (There's an address listed at the 'home' link.)