Guest guest Posted May 4, 2009 Report Share Posted May 4, 2009 Pineapple juice will not work with gelatin, no matter how diluted or strained, no matter if the juice is homemade. Even a tablespoon of pineapple juice used in making gelatin with other juices causes the non-hardening gelatin. Tastes OK, by the way, but you need to drink it, not eat it with a spoon. I am not sure what chemical is in pineapple juice that blocks the firming up of gelatin. Never looked it up. Pieces of pineapple used in gelatin often work OK as long as there aren't too many. But the juice blocks the gelatin firming up. Kim M. SCD 5 years > > anyone have ideas why home-made pineapple jello (from home-made, strained juice) would not harden? I used KNOX followed the instructions perfectly- just diluted the juice a bit but still used the right knox/liquid ratio. > > Jodi > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 4, 2009 Report Share Posted May 4, 2009 At 04:59 AM 5/4/2009, you wrote: anyone have ideas why home-made pineapple jello (from home-made, strained juice) would not harden? I used KNOX followed the instructions perfectly- just diluted the juice a bit but still used the right knox/liquid ratio. Did you heat/ boil the pineapple juice before making the gelatin? If the pineapple juice was freshly squeezed/juiced, which I think you do with all your fruit juices, it may unset the Jello, and it will certainly prevent it from setting properly if added to the mix from the start. There is a naturally occurring enzyme in pineapple, called bromelain. Bromelain basically acts to break protein down. That's one reason pineapple is popular as a side dish with heavy meats like pork. Of course, they usually serve canned pineapple, and therefore the bromelain is gone, but.... (One intriguing thing about bromelain is that if it is taken on an empty stomach, it acts as an anti-inflammatory. If taken with food, it acts as a digestive aid.) Jello is mostly made of gelatin, a protein. So add an protein-destroying enzyme to Jello, and it won't congeal because the protein molecules have been torn apart. But, if the pineapple is heated enough (precursor for canning or packing in juice cartons and bottles, which some of us don't tolerate), the bromelain enzyme gets destroyed. Hence the trick is to use canned pineapple when making Jello. If you tolerate it. OR, you need to pasteurize your freshly squeezed juice pretty much the same way we pasteurize milk for yogurt before you make the Jello. — Marilyn New Orleans, Louisiana, USA Undiagnosed IBS since 1976, SCD since 2001 Darn Good SCD Cook No Human Children Shadow & Sunny Longhair Dachshund Quote Link to comment Share on other sites More sharing options...
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