Pineapple and Other Fruits That Ruin Jell-O (2024)

Jell-O, Fruits, and Enzymes

Pineapple and Other Fruits That Ruin Jell-O (1)

By

Anne Marie Helmenstine, Ph.D.

Chemistry Expert

  • Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
  • B.A., Physics and Mathematics, Hastings College

Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.

Learn about ourEditorial Process

Updated on May 08, 2019

If you add certain fruits to Jell-O or other gelatin desserts, the gelatin won't set up. Here's a look at which fruits have this effect and what happens that causes them to ruin Jell-O.

Key Takeaways: Fruits That Ruin Gelatin

  • Some fresh fruits prevent Jell-O and other types of gelatin from gelling.
  • These are fruits that contain high levels of proteases. Proteases are enzymes that break chemical bonds in proteins, such as collagen in gelatin.
  • Pineapple, kiwi, papaya, mango, and guava are examples of fruits that cause a problem.
  • Heat inactivates proteases, so cooking fruit before adding it to gelatin prevents any issue. Canned fruit has been heated, so it is also acceptable for use in gelatin desserts.

Fruits That Ruin Jell-O

The fruits that ruin Jell-O contain enyzmes called proteases which break the chemical bonds that try to form between chains of protein as Jell-O or other gelatin tries to gel.

  • pineapple - bromelain
  • kiwi - actinidin
  • figs - ficain
  • papaya - papain
  • pawpaw - papain
  • mango
  • guava
  • ginger root

Only Fresh Fruit Causes a Problem

You may have had Jell-O that contained pineapple or another of the fruits on the list. This is because the enzymes in the fruit only disrupt the gelling process if the fruits are fresh or frozen. If the fruit is heated (e.g., canning or cooking) then the enzymes are permanently inactivated, making the fruit perfectly fine for making Jell-O.

Jell-O's versatility enabled it to be used in a wide variety ofold fashioned recipes you won't believe people actually ate.

Format

mlaapachicago

Your Citation

Helmenstine, Anne Marie, Ph.D. "Fruits That Ruin Jell-O and Other Gelatin Desserts." ThoughtCo, Apr. 5, 2023, thoughtco.com/fruits-that-ruin-jell-o-607399.Helmenstine, Anne Marie, Ph.D. (2023, April 5). Fruits That Ruin Jell-O and Other Gelatin Desserts. Retrieved from https://www.thoughtco.com/fruits-that-ruin-jell-o-607399Helmenstine, Anne Marie, Ph.D. "Fruits That Ruin Jell-O and Other Gelatin Desserts." ThoughtCo. https://www.thoughtco.com/fruits-that-ruin-jell-o-607399 (accessed June 24, 2024).

Pineapple and Other Fruits That Ruin Jell-O (2024)

FAQs

Pineapple and Other Fruits That Ruin Jell-O? ›

If you like making gelatin for dessert, the box often recommends not adding certain kinds of fruit, including pineapple, kiwi, mango, ginger root, papaya, figs or guava. People have a hard time getting the gelatin to solidify when they add these fruits.

What fruits can you not put in Jell-O? ›

Some fresh fruits prevent Jell-O and other types of gelatin from gelling. These are fruits that contain high levels of proteases. Proteases are enzymes that break chemical bonds in proteins, such as collagen in gelatin. Pineapple, kiwi, papaya, mango, and guava are examples of fruits that cause a problem.

Does pineapple affect Jell-O? ›

Gelatine is derived from the protein collagen. The enzyme in fresh* pineapple, bromelin, breaks down collagen and this prevents the jelly from setting. If the shape of the active site is distorted, the enzyme can no longer function and is described as being denatured.

Which two raw fruits will not allow gelatin to set? ›

If you like making gelatin for dessert, you might have noticed that the box recommends against adding certain kinds of fruit, such as papaya and pineapple, which are shown in Figure 1 below, as well as other fruits, like kiwi, mango, ginger root, figs, or guava.

Why won't my Jell-O set with pineapple? ›

Pineapple, however, contains a chemical called bromelain, which has protease enzymes in it that break down protein. This stops the jelly from being able to create its matrix structure as it cools, and so it doesn't set and remains a liquid.

What fruit stops gelatin setting? ›

If you like making gelatin for dessert, the box often recommends not adding certain kinds of fruit, including pineapple, kiwi, mango, ginger root, papaya, figs or guava. People have a hard time getting the gelatin to solidify when they add these fruits.

What is the best fruit to put in Jell-O? ›

Your Jell-O dessert will look gorgeous if you choose types of fruit that have different colors, like green grapes, raspberries, and banana slices. Avoid fresh pineapple, kiwi, mango, ginger root, papaya, figs or guava.

When not to use pineapple? ›

Bromelain can also interact with some medications. Those taking antibiotics, anticoagulants, blood thinners, anticonvulsants, barbiturates, benzodiazepines, insomnia drugs and tricyclic antidepressants should be careful not to eat too much pineapple.

Is pineapple high in pectin? ›

No, pineapple does not have a lot of pectin. This means that pectin must be added to make a jam or jelly with a solid texture. What are the main ingredients in jam? The main ingredients in jam are sugar and fruit.

What breaks down gelatin? ›

The enzyme that breaks down the proteins in gelatin is gelatinase. (Most enzymes are named after what they do and end in “ase.”) When the enzymes break down the protein, the jiggly block turns into liquid.

Which raw fruits should never be added to gelatin? ›

Fruits that contain proteases include figs, pineapple, pawpaw, mango, ginger root, guava, kiwi, and papaya, according to these two sources. If you add any of those raw fruits to gelatin, it simply won't set.

What causes Jell-O to not set up? ›

Chances are you didn't follow the directions exactly, adding too much water or watery fruit (via Butter With A Side Of Bread). Jell-O also won't set if left on the counter; it needs to chill in your refrigerator.

Does bromelain destroy collagen? ›

Bromelain also promotes collagen synthesis, which is vital for maintaining skin elasticity and preventing premature aging. By increasing collagen production, bromelain can help improve the skin's texture and reduce the appearance of fine lines and wrinkles.

Does frozen pineapple stop jelly setting? ›

The four different pineapple samples, when placed into the solution of gelatin, will cause the entire solution to either set or not set at all. The fresh and frozen pineapple samples in the gelatin solution will not set, but the commercially canned and cooked pineapple in gelatin solution will set.

How do you get fruit suspended in Jell-O? ›

Cool the gelatin mixture before folding in the fruit.

In order to suspend fruit in the gelatin, the gelatin needs to be almost set and quite thick. The easiest and fastest route to the right texture for setting fruit is to chill your gelatin mixture over an ice bath.

Why is my Jell-O fruit not setting? ›

Chances are you didn't follow the directions exactly, adding too much water or watery fruit (via Butter With A Side Of Bread). Jell-O also won't set if left on the counter; it needs to chill in your refrigerator.

Does kiwi fruit stop jelly setting? ›

Your jelly should set in the fridge in around 4 hours. Note: you can add fruit or juice, but avoid fresh pineapple, kiwi or papaya as these fruits will stop your jelly from setting.

Top Articles
Latest Posts
Article information

Author: Clemencia Bogisich Ret

Last Updated:

Views: 5902

Rating: 5 / 5 (80 voted)

Reviews: 87% of readers found this page helpful

Author information

Name: Clemencia Bogisich Ret

Birthday: 2001-07-17

Address: Suite 794 53887 Geri Spring, West Cristentown, KY 54855

Phone: +5934435460663

Job: Central Hospitality Director

Hobby: Yoga, Electronics, Rafting, Lockpicking, Inline skating, Puzzles, scrapbook

Introduction: My name is Clemencia Bogisich Ret, I am a super, outstanding, graceful, friendly, vast, comfortable, agreeable person who loves writing and wants to share my knowledge and understanding with you.