Questions tagged [food]

Any substance consumed to provide nutritional support for the body.

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16
votes
1answer
2k views

Is agriculture really a net contributor of greenhouse gases?

A lot of scientific studies and credible sources indicate that agriculture is one of the major contributors of greenhouse gases. The exact numbers seem to vary a lot, I've seen everything from 8% to ...
13
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1answer
4k views

Why don't we feel hungry after waking up?

Yesterday, I was fasting (drinking only water until I had dinner at 9 pm). After dinner, I went back to my lab (I am a Master's student) and worked till 1:30 AM. By 1 o' clock, I was feeling quite ...
6
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2answers
343 views

Sex differences in response to food deprivation

This question was inspired by a casual conversation with friends the other night. Some of us had noted that women tend to eat smaller meals more often (snacks, fruits etc) while men eat larger ...
0
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1answer
56 views

Is it feasible to grow edible crops for lawns?

Is it possible to grow some type of plant that functions well as a lawn (e.g. is somewhat grass like), but that is humanly edible? Would anything that currently exists fit this role? For example ...
1
vote
1answer
72 views

What in fast food fries have that regular fries don't? [closed]

Why is it that a french fry from a fast food restaurant doesn't seem to spoil the same way as one that one would cook at home? PS: If given enough time will fast food french fries eventually ...
8
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2answers
4k views

Human Digestion of Cellulose?

Most animals can digest the cellulose in grass because of the anaerobic bacteria called Fibrobacter succinogenes living in their rumen (gut). The bacteria produces the enzyme cellulase and is ...
34
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2answers
7k views

What do butterflies eat?

I found a beautiful scarce-swallowtail butterfly in my storeroom, but it was kind of frozen and couldn't fly away. So, I put it on my terrace in the sun. After a little bit, it flew a few meters away ...
3
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1answer
608 views

Protein content in sprouted beans

I have checked on Wikipedia which says that sprouted mung beans has way less protein than normal one, while on web you will find articles saying sprouted beans are best, which is true, how do I eat ...
6
votes
1answer
80 views

What is mold detection threshold in humans?

I managed to find primary taste detection thresholds, e.g. for sweetness it's 1 part in 200 of sucrose in solution. Recently I've noticed that I can detect mold smell/taste even if there are no signs ...
1
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2answers
67 views

Is there any strong factor against human edible plants being widespread and easy to gather?

While many habitats have plants, fruits, nuts and berries available for consumption by humans walking by, most places (if any?) seem to require significantly more effort than simply picking our food ...
5
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1answer
1k views

Is hydrochloric acid suitable for pickling food?

I was wondering whether it is possible to pickle food using hydrochloric acid (HCl), rather than acetic acid. I am not very familiar with the biology of the fermentation process involved in pickling ...
3
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1answer
516 views

Why doesn't sugar spoil?

Sugar contains a lot of easily accessible chemical energy. Why seemingly nothing likes to grow on it?
0
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1answer
192 views

Will meat rot in alcohol below freezing?

I understand that freezing slows decay but I'm wondering what will happen if meat is kept in below freezing temperatures while submerged in a liquid that has a lower freezing rate, like alchohol?
2
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0answers
354 views

Preserving/disinfecting meat with alcohol?

I'm considering safer ways to handle raw meat and it occurred to me that alcohol might be useful. I'm considering, say, sealing pieces of meat in a container with 40% alcohol or higher in fridge or ...
-2
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3answers
103 views

Food safety during roadtrips [closed]

I will be moving across the country in the coming weeks, and I have realised that I will likely have leftover perishable food in my apartment before I leave and I was thinking of trying to prepare ...
2
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0answers
86 views

Are oysters really aphrodisiacs?

Oysters have been thought of as aphrodisiacs for millennia. Is this a case of the bark of a willow tree as a precursor to modern paracetamol, or some sort of marketing ploy. Is there any biological ...
1
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1answer
122 views

Protein diet composition

I have read that non veg food are better for proteins while veg food is deficient in either one or other protein. If it is so are herbivores protein deficient always in case of animals as well as ...
13
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2answers
6k views

What kinds of bacteria live in water bottles?

I've always heard not to re-use disposable plastic water bottles. According to this Huffington Post article, the reason is because: everyday wear and tear from repeated washings and reuse can ...
3
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0answers
896 views

Can a lion be fed cat food? [closed]

Is there a correlation between eating raw meat and aggressiveness in felines and canines? Growing up, I was always told to cook the meat I gave to my dogs and cats so as not to give them the "taste ...
1
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0answers
222 views

fast metabolism and law of conservation of energy

Usually if person take more calories with food than he spends, he is gaining weight. But if he has fast metabolism, his weight stays the same. Where these calories go? Maybe food is not completely ...
1
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2answers
184 views

Can DNA sequencing of food provide quantitatively the fraction of protein from chicken vs soy?

There is some news about a report from Canada's CBC about fast-food chicken items containing as much as 50% soy protein, based on DNA testing. I won't do the report the service of linking to it ...
197
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3answers
31k views

Why are so few foods blue?

Although blue foods exist, they're rare enough compared to other foods for food preparers to use blue plasters as a convention. The natural colour of a given food is due to pigments that have some ...
3
votes
1answer
860 views

Is some of the energy of food lost during digestion?

I know that chemical energy of food is converted to heat energy to be used by the body in many metabolic reactions. Specifically, I know that the breaking down of bonds is what releases energy. Does ...
9
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1answer
757 views

Why is carotene in carrots?

Internet says that the carotene is an important pigment for photosynthesis and UV-protection. That explains its accumulation in leaves. I suppose colored fruits are more appealing to animals, so that ...
3
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1answer
91 views

Relationship between food decay and electric current

I am planning to do a little experiment on investigating the relationship between food (organic) decay and the electric current. I am going to place the food (ex.banana) on top of an aluminum foil, ...
1
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1answer
283 views

How does vitamin A deficiency arise?

How does vitamin A deficiency arise? I am living in a "developed" country, so excuse me if I miss some facts that are real, and threatening, in other parts of our world. I heard about https://en....
3
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0answers
64 views

Eating possibly spoiled food in the fasted state - is it considered protective against the potential harm?

It is a known fact that the acidic environment in the stomach serves several purposes, such as providing suitable conditions for primary chemical digestion of food molecules and protection from ...
1
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0answers
4k views

Does drinking water affect oral thermometer accuracy?

According to various sources (including Mayo and Cleveland Clinics), one must wait a certain number of minutes before an accurate oral temperature reading may be taken. However, these two sources (and ...
-2
votes
2answers
291 views

What food has the highest calorie per unit price that you can buy and eat regularly? [closed]

What food has the highest calorie per unit price that you can buy and eat regularly? The food cannot give you any undesirable health effect due to the sole reason that you eat it regularly (say once ...
1
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2answers
109 views

How well can humans detect vitamin-richness?

Humans do prefer fatty, sweet/starchy and salty. And fatty foods are rich in vitamins. How well can humans detect vitamin content apart from fattiness of food? Can humans choose the vitamin-richer of ...
2
votes
1answer
130 views

What do bloodsucking animals actually feed on?

A number of animals, including mosquitos, leeches, ticks and so on, feed on blood. And yet, at least in mammals, most stored nutrients can be found in body fat as fat, muscles and liver as glycogen ...
3
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1answer
233 views

Can we digest food as well as herbivores [duplicate]

I heard some guy say that we can't digest plant food as well as herbivores. Which seems weird to me seeing as how humans can survive without any nutrient deficiencies besides b12 on only plants but we ...
1
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1answer
57 views

Is there such substances that body can only send to storage (as fat)?

I watched video with statement that there are such part of substance in potato chips which body can't use ("empty calories"), that they surely will be stored as fat. It was here on 12:23: https://...
5
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2answers
112 views

Does food really give our bodies the energies that we have determined by burning them in the lab?

You are likely to have come across numbers like sugars 17kJ/g (4kcal/g) as the energy supposedly available to our bodies after eating. Yet these values have been determined using very artificial means,...
7
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1answer
336 views

Is bad tasting food more likely to cause harm?

Taste is often referred to as subjective. For example certain foods taste bad to me, such as oranges, grapefruit, grapes, raisins, and sweet potatoes. However the wiki article on taste explains that ...
3
votes
1answer
78 views

What are the obstacles to “refitting” the human body's metabolism?

As a layman, I understand the problem of rising obesity like this: In the old times, humans could never get enough food, thus they would eat whatever they could get. This "program" is encoded in our ...
3
votes
1answer
62 views

Is there an ecological scenario where terrestrial insect larvae can show food choices?

I have been going through literature on insect food choices. I plan to study the effect of prior experience on food choices in both adults and larvae of the red flour beetle, Tribolium castaneum. ...
4
votes
1answer
89 views

Variation of nutrients in food

Recently when buying food, mainly vegetables, I started looking at the nutritional values. Now for some reason the Dutch broccoli has way less protein (~2g/100g) than the German one (~8g/100g). ...
6
votes
4answers
224 views

Besides fruits and milk, what other things in nature are “intended” to be eaten? [closed]

Besides fruits and milk, what other examples are there in nature where it is beneficial for a species to have some part of its biomass eaten by others so that it evolved to produce nutritious parts to ...
1
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0answers
37 views

Do organic veggies contain more pesticides than regular food?

Since organic farms can only use "natural" organic approved pesticides rather than frequently more effective "synthetic" pesticides in use by other farms, does it mean that, on average per kg of ...
8
votes
1answer
27k views

Rust on kettle dangerous to consume?

I recently traveled to Japan, where I picked up a cast-iron kettle known as a tetsubin. When I opened it up, I found that the inside was heavily rusted. Rust is a result of various combinations of $\...
1
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0answers
225 views

Why bananas accumulate a radioactive isotope of potassium (K40)?

A quick google search reveals many pages that intend to calm consumers down and assure them that quantities of radioactive potassium in bananas (K40 isotope) is not sufficient to be concerned about, e....
1
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0answers
158 views

What type of Gorgonzola cheese fungus/bacteria is this?

I have purchased a gorgonzola cheese and it came with some orange/yellow fungus/bacteria in the cheese's surface. Anyone know what kind of fungus/bacteria it is, and if it's safe to eat?
5
votes
1answer
684 views

How does the human stomach handle a mix of digested and undigested food?

As I understand it, the stomach digests the bolus into chyme and then passes the latter on to the small intestine. This process takes between 40 minutes and a few hours. However, what happens when ...
5
votes
1answer
2k views

Why do blue jays eat my cat food?

We buy some run of the mill big-box store cat food. Over the last several weeks, I've observed a blue jay landing on the cat food dish, taking a piece or two, and flying off with it. I assumed it was ...
3
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1answer
1k views

Living on pure glycogen?

I was recently fascinated when I learned about polysaccharides (I am a biology newbie) and was wondering about some of their properties. After doing some googling I was unable to find any information ...
2
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0answers
42 views

How do organoarsenics improve digestion efficiency in poultry?

It struck me as very surprising that these organoarsenic compound with structure looking not very compatible with living system is widely used as food additive to increase weight gain and improve food ...
8
votes
1answer
43k views

What is this white stuff inside apples?

I live at Vancouver, BC, Canada and I often find this kind of white stuff inside the apples I buy I used to live in Europe (Switzerland) and never saw that before. It very much look like a fungus. Is ...
1
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2answers
1k views

What makes something food?

From my (limited) understanding, animals get energy from food by breaking chemical bonds between molecules. There's a lot of water here [citation needed], so it seems like natural selection would ...
0
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2answers
153 views

Would it be possible to eat things from another planet [closed]

Although at first glance my question is perhaps better suited for a space exploration or sci-fi forum I looked and felt this forum was more appropriate. What makes plants and animals edible and ...

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