Never Eat The ‘Clean’ Part Of Moldy Bread

Insider Science
12 Sept 201803:21

Summary

TLDRThis video script warns against the dangers of consuming moldy bread. Despite mold appearing only on a part of the bread, it's a misconception to think the rest is safe; mold's roots, called hyphae, can contaminate the entire loaf. The script explains that mold is a fungus, and while some types are used in food production, many others can be harmful or even deadly. It cites examples of mold-induced illnesses and emphasizes the risk of mycotoxins, which high temperatures cannot neutralize. The message is clear: it's safer to avoid the gamble and not consume moldy bread.

Takeaways

  • 🍞 **Moldy Bread Issue**: Mold on bread is not just on the surface; it extends throughout the bread due to its root-like structure called hyphae.
  • 🌱 **Invisible Mold**: Even if you can't see mold, it can be present throughout the loaf, making it unsafe to eat.
  • 🥖 **Spoilage Process**: Mold's visible part is the sporangium, which releases spores, indicating that the entire loaf might be contaminated.
  • 🚫 **Cross Contamination**: Avoid using another slice from the same loaf as it could also be contaminated with mold spores.
  • 🧀 **Mold in Food**: Mold is used in food production like cheese and soy sauce, but not all molds are safe to consume.
  • 🍄 **Mold Variability**: There are thousands of mold species, many of which are harmless, but some can be deadly.
  • 🚨 **Harmful Molds**: Certain molds like Penicillium crustosum produce mycotoxins, which are harmful even when heated.
  • 🏥 **Health Risks**: Mold can cause severe health issues, such as muscle tremors or even death in extreme cases.
  • 🦠 **Different from Bacteria**: Unlike bacteria, high temperatures do not neutralize the toxins produced by mold.
  • ⚠️ **Risk Assessment**: It's a gamble to eat moldy food because you can't be sure if the mold is safe or not.

Q & A

  • Why is it unsafe to eat bread with mold, even if only a part of it is visibly affected?

    -Mold is a type of fungus with a network of roots called hyphae that can't be seen. These hyphae can extend throughout the bread, meaning that even if only a part appears moldy, the entire piece may be contaminated.

  • What is the reproductive part of mold known as?

    -The reproductive part of mold is called sporangium, which releases tens of thousands of spores, potentially contaminating the entire loaf of bread.

  • Why is it not advisable to use another slice from the same loaf of bread if one slice has mold?

    -Using another slice from the same loaf is not advisable because the mold spores could have spread throughout the loaf, making it unsafe to consume.

  • What is the difference between mold used in food production and mold found on spoiled food?

    -Mold used in food production, such as in cheese and soy sauce, is a controlled process involving specific, safe species of mold. In contrast, mold found on spoiled food can be any of thousands of species, some of which can be harmful or even deadly.

  • How can mold consumption be compared to eating wild mushrooms?

    -Eating mold on bread is like eating wild mushrooms; while many are safe, some can be harmful or even deadly, making it a gamble to consume.

  • What is the name of the mold that can sometimes cause allergies but is generally harmless?

    -Cladosporium is a type of mold that can sometimes trigger allergies but is generally considered harmless.

  • What are Mycotoxins and why are they dangerous?

    -Mycotoxins are harmful poisons produced by certain molds like Penicillium crustosum. They are dangerous because high temperatures do not break them down, and consuming them can lead to severe health issues.

  • What happened to an elderly couple in 2005 due to eating moldy food?

    -An elderly couple was admitted to the hospital in 2005 after eating a can of soup contaminated with mold, which caused them to have severe muscle tremors but they eventually recovered.

  • What is Zygomycosis and why is it a serious condition?

    -Zygomycosis is a deadly infection that can be caused by certain molds like Rhizopus stolonifer. It is serious because it can cause blood clotting, leading to cells being starved of oxygen and potentially dying.

  • Why is it not safe to assume that a little mold on bread is harmless?

    -It is not safe to assume that a little mold on bread is harmless because there are many types of mold, and without knowing the specific type, one cannot be sure if it is safe to eat. Some molds can produce harmful toxins that are not destroyed by heat.

  • How does the presence of mold on bread illustrate the potential risks of consuming moldy food?

    -The presence of mold on bread illustrates the potential risks of consuming moldy food by showing how one visible mold spot can indicate widespread contamination and the possibility of ingesting harmful or toxic mold species.

Outlines

00:00

🍞 The Dangers of Moldy Bread

The script begins with a scenario of preparing a sandwich with turkey, tomato, and Swiss on sourdough bread, only to discover mold. It clarifies that mold, being a type of fungus, spreads through unseen roots called hyphae, making it unsafe to cut away the visible mold and consume the rest. The script warns against the idea of using another slice from the same loaf, as mold spores could have spread throughout. It explains that while some molds are used in food production like cheese and soy sauce, many others can be harmful, with some even deadly. The narrative includes a cautionary tale of an elderly couple hospitalized due to moldy soup and highlights the potential for serious health consequences from consuming moldy bread.

Mindmap

Keywords

💡Mold

Mold is a type of fungus that grows in the form of multicellular filaments. In the context of the video, mold is depicted as an unwanted guest on bread, which can spoil the food. The video emphasizes that mold is not just visible on the surface but has extensive root-like structures called hyphae that can penetrate the entire piece of bread, making it unsafe to eat even if only a part appears to be affected.

💡Hyphae

Hyphae are the thread-like structures of fungi, which form the main body of molds and other fungi. They are not visible to the naked eye and can extend throughout the food, such as bread, even if the mold is only visible in one area. The video uses the term 'hyphae' to explain why a seemingly small mold spot can indicate that the entire loaf is contaminated.

💡Spores

Spores are reproductive units produced by fungi, including molds. They are capable of developing into new organisms and are released into the environment to propagate the species. The video mentions that each sporangium, the reproductive part of mold, can release tens of thousands of spores, which can settle and grow on other parts of the loaf, making it unsafe to consume.

💡Sporangium

A sporangium is the structure within fungi that contains and releases spores. The video explains that by the time mold is visible on bread, it is actually the sporangium, indicating that the mold has already released or is ready to release spores, which can contaminate the entire loaf.

💡Mycotoxins

Mycotoxins are toxic secondary metabolites produced by certain molds. They can be harmful or even deadly if ingested. The video warns about the presence of mycotoxins in some molds, such as Penicillium crustosum, which can cause severe health issues, highlighting the risk of consuming moldy food.

💡Zygomycosis

Zygomycosis is a rare but serious fungal infection caused by molds from the class Zygomycetes. The video describes a case where an elderly couple was hospitalized due to an infection from Rhizopus stolonifer, a type of mold that can cause Zygomycosis. This keyword is used to illustrate the potential dangers of mold consumption.

💡Cladosporium

Cladosporium is a common mold that can sometimes cause allergies but is generally considered harmless. The video uses Cladosporium as an example to contrast with more harmful molds, emphasizing that not all molds are equally dangerous, but it's difficult to determine which type is present on food.

💡Penicillium crustosum

Penicillium crustosum is a type of mold that produces mycotoxins, which are harmful to humans. The video mentions this mold as an example of a species that can cause health problems, such as the case of the elderly couple who were hospitalized after consuming contaminated soup.

💡Rhizopus stolonifer

Rhizopus stolonifer is a mold that commonly grows on bread and is characterized by its blue-green color with black splotches. The video warns that this mold can cause a deadly infection called Zygomycosis, which can lead to blood clotting and cell death due to oxygen deprivation.

💡Fungus

Fungus is a kingdom of organisms that includes molds, yeasts, and mushrooms. The video uses the term 'fungus' to describe mold, emphasizing that mold is a type of fungus with a complex structure that can infiltrate food, making it unsafe to eat.

💡Contamination

Contamination refers to the presence of unwanted substances or organisms, such as mold, in a material or environment. In the video, contamination is used to describe the state of bread that has been invaded by mold and its hyphae, rendering it unsafe for consumption.

Highlights

Mold on bread is a concern because it's a type of fungus with unseen roots called hyphae.

Even if mold appears only on part of the bread, the entire loaf can be contaminated.

Mold's visible part is the sporangium, which releases thousands of spores.

A moldy loaf might not be safe to eat even if you can't see the mold.

Mold is used in food production like cheese and soy sauce, and even in antibiotics.

Eating mold can be risky as it's similar to eating wild mushrooms; some are safe, others deadly.

There are thousands of mold species, many harmless, but it's hard to know which is on your food.

Cladosporium mold can cause allergies but is generally not harmful.

Penicillium crustosum mold produces harmful toxins called Mycotoxins.

A couple was hospitalized in 2005 after eating moldy soup contaminated with Mycotoxins.

Rhizopus stolonifer mold can cause a deadly infection called Zygomycosis.

Zygomycosis can lead to blood clotting and cell death due to oxygen deprivation.

High temperatures don't neutralize the danger of Mycotoxins.

It's important to consider the risk before eating moldy food.

Transcripts

play00:00

You're all ready to make the sandwich of your dreams.

play00:04

Turkey, tomato, and Swiss on a bed of romaine lettuce

play00:07

sandwiched between two slices of sourdough.

play00:11

Classic, but oh no!

play00:13

What's this? Mold? Ugh.

play00:17

But look, good news, the mold's only on part of the bread

play00:21

so I could just cut that away and be fine, right?

play00:32

There's no such thing as a clean part of moldy bread.

play00:36

That's because mold is a fungus like mushrooms.

play00:40

The caps on the surface are easy enough to spot,

play00:43

but there's a vast network of subterranean roots

play00:46

called hyphae that you can't see.

play00:49

So let's take another look at that bread of yours.

play00:52

Ugh, disgusting.

play00:54

Well, maybe you can just grab another piece

play00:56

from the same loaf.

play00:58

Well, that's not such a good idea, either.

play01:02

because by the time the mold sprouts its fuzzy head,

play01:06

what you're really seeing is the reproductive part

play01:08

of the mold called sporangiums.

play01:11

Each sporangium releases tens of thousands of spores,

play01:15

so even though you can't see it, that entire loaf

play01:19

could be teeming with fungus.

play01:22

But it seems like such a waste to just throw it out.

play01:26

After all, you eat mold on purpose all the time

play01:31

like the mold that goes into making cheese, soy sauce,

play01:34

and even life-saving antibiotics like penicillin.

play01:38

Eating a little bit on your bread can't be that bad, right?

play01:42

Well, ultimately, it's a gamble.

play01:45

Just like eating a wild mushroom

play01:47

many are fine, but some can be deadly.

play01:49

Mold is the same way.

play01:51

There are thousands of different species of mold

play01:54

many of which are harmless to humans.

play01:57

But since so many types can sprout up on food,

play02:00

it's nearly impossible to know if what

play02:02

you're eating is safe.

play02:04

Cladosporium, for example, can sometimes trigger allergies

play02:08

but is generally harmless,

play02:10

whereas other molds like Penicillium crustosum

play02:13

produce harmful poisons called Mycotoxins.

play02:18

An elderly couple in 2005, for example, was admitted

play02:22

to the hospital after eating a can of soup

play02:24

contaminated with this kind of mold.

play02:27

They had severe muscle tremors but eventually recovered.

play02:31

But other molds, like Rhizopus stolonifer, can have

play02:35

permanent effects, and you might recognize this mold

play02:38

since it commonly grows on bread.

play02:40

Blue green with black splotches and super fuzzy.

play02:44

In rare cases, it can prompt a deadly infection

play02:47

called Zygomycosis, which causes your blood to clot

play02:50

and can ultimately starve your cells of oxygen

play02:54

to the point that they die.

play02:56

And it's not like bacteria, where a little heat

play02:59

will eliminate the threat, because high temperatures won't

play03:02

break down the Mycotoxins.

play03:05

And since you have no clue which one you're about

play03:08

to put in your mouth, ask yourself

play03:11

is it really worth the risk?

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関連タグ
Food SafetyMold HazardsHealth RisksBread MoldMycotoxinsFood SpoilageMold AllergiesAntibioticsFoodborne IllnessMoldy Food
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