Questions tagged [food]

Any substance consumed to provide nutritional support for the body.

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6 views

Could one grow mushrooms on processed food waste? [migrated]

I'm wondering if the processed food waste (PFW) output of an electric composter, like this one, could be used to grow (oyster) mushrooms on? The PFW is supposedly sterile, so the idea is to lightly ...
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18 views

Which white beans have phosphatidylserine?

Many articles online say that plant foods are poor sources of phosphatidylserine, except for white beans, which have 107 mg per 100 g.¹ ² ⁴ Honestly though, I think they might just be repeating a ...
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1answer
35 views

Do vitamin enriched foods preserve their value when exposed to higher temperatures?

At what temperatures do different kinds of vitamins are destroyed or lose their nutritional value? Imagine you went to the store and bought vitamin enriched cacao powder. Then you made yourself a hot ...
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1answer
111 views

Does body absorb nutrients less efficiently if we ingest the same amount at the same time, opposed to spreading over a larger period?

I would like to understand if ingesting a certain amount of nutrients will result in different absorption from my body, depending on whether I ingest that amount spread over time or everything at once....
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1answer
70 views

What are the differences between mammal and insect digestion of cellulose?

I know that digestion of cellulose is difficult in mammals and requires a lot of steps. But I am fascinated by the idea of one day achieving human digestion of cellulose. Which got me thinking about ...
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1answer
65 views

Why do we need to grow plants to make food?

Why can't we synthesize the nutrients that we need directly from chemical reactions, from energy and simple inorganic molecules found around us? If it's hard, why not try to copy how plants do it? I ...
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3answers
6k views

Why are sugars in whole fruits not digested the same way sugars in juice are?

In this paper of the WHO, it is claimed that we should limit our consumption of free sugars: WHO recommends a reduced intake of free sugars throughout the lifecourse. [...] Free sugars include ...
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14 views

What is the percentage of food that goes to a lamb fetus?

Does any one know the percentage of food eaten by a pregnant ewe that goes to the lamb fetus? Specifically how much does the mother take for her body from every one kilo of food and how much does ...
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1answer
7k views

How can a drink contain 1.8 kcal energy while 0 g fat/carbs/protein?

How is it possible that the Red Bull Zero contains 0 gramms of fat, carbs and protein, but it still has 1.8 kcal of "energy". I always thought that the human body can gain energy only from 3 kinds of ...
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2answers
116 views

How does the stomach handle continuous eating?

In biology class, we learned this familiar story: Food enters the stomach, the stomach churns it with acid and enzymes, and then, somehow, the stomach senses when the stew is ready and releases it ...
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Are olfactive indicators always the result of inadequacy in sanitation?

Question If you can smell the scent of food in a thoroughly cleaned container, does that imply trace amounts of food particles remain? Scope It goes without saying that our sense of smell is ...
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36 views

How to tell the difference between mould and condensed milk and sugar

I have had sweetened condensed milk in the refrigerator for some weeks (or months perhaps?). The can was covered with aluminium foil. I noticed some disk-like artefacts on its surface, which are ...
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48 views

What type of maggots are these?

After leaving some hot dogs out in the sun at a pool party, we brought them inside and refrigerated them. I took them out today without thinking and microwaved them. When I put them on my plate, I ...
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3answers
773 views

What are the bare minimum nutrients required to survive as a human?

I am trying to determine the bare minimum nutritional requirements to survive as a human, ignoring energy (caloric) requirements. Another way to ask this question is: What elements can humans not live ...
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1answer
36 views

Do violet potatoes contain more or less solanine than normal potatoes?

What is the solanine content of the violet potatoes? Is it more or less than in the normal potatoes?
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2answers
250 views

Is sugar absorbed into the bloodstream through the walls of the mouth?

If you let a piece of candy melt in your mouth, but did not swallow it, would the sugar be absorbed through the walls of your mouth?
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1answer
60 views

If overcooked hard boiled eggs show these green sulfide rings, why do scrambled/fried eggs not show this?

In the image above, the dark green rings are ferrous sulfide rings, caused when the sulfur from the egg white reacts with the iron in the egg yolk when the egg is overcooked. I was wondering, given ...
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28 views

How to prevent mold from building on food and how to kill it along with neurotoxins?

I have some food/fruits chopped in very small parts, whatever it is that needs to be conserved during long time, when it is given to me it can be somewhat wet or humid, after some time of keeping it ...
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1answer
100 views

Is cannibalism part of mainstream food-chain?

There are some species who sometimes eat their own kinds. Is this cannibalism considered their regular food? Do the link in food-chain for those animals make a loop on themselves? Can this statement: ...
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68 views

How to grow Bacillus subtilis spores for making natto?

I enjoy making fermented foods, one of them is natto, which is cooked soybeans fermented with B. subtilis. I usually buy the B.s. spores online, but they are somewhat expensive and often hard to find....
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1answer
54 views

How do astronauts eat in space?

If there is no gravity in space how does the food enter the stomach? My guess is that it is due to the movement of the esophagus.Am I correct?
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1answer
65 views

What does the number after Vitamin B signify?

Does the number after Vitamin B signify anything? For example what is the significance of 12 in Vitamin B12?
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1answer
70 views

Can someone help me to identify what kind of pear is this?

I went to my local groceries supermarket (in Lima, Peru) and found this cheerful looking pear named locally as "pera canela". But I found it weird as the only variety which I'm aware of is Packham's ...
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64 views

Air bubble in addled egg

Im completely n00b in biology, just a question arised during the saturday night warmup and there is no better place to get answers :) So, as probably most of you know, if you want to decide an egg is ...
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30 views

Why do some foods do not taste good when eaten together that eaten separately would taste great

The way I understand it, 'good tasting food' is evolutionary concept e.g to be able to distinguish between high nutritional value foods and ones that have no nutritional value whatsoever. So if well-...
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13 views

Thermophilic Total plate count with PCA with Triphenyl tetrazoliumchloride as supplement

Hello I'm am a fourth year microbiology analyst and I'm busy with finishing my final internship. During my final internship I have to complete a own assignment. the assignment I got was to find out if ...
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39 views

What do chimpz/bonobos/orangutangs/gorillas feed their babies with?

I just read this question and it made me curious about what a more original baby diet would look like. So, at what age do our closest relatives in the animal kingdom start giving their offspring more ...
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16 views

Recommendation for daily intake of natural sugars

There multiple articles/topics raised on the internet about the free/added sugars in the human diet as for example WHO recommendation on page 16, but at the same time not that much about the naturally ...
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19 views

What is the consensus, if it exists, on the (absence of) biological effects of artificial sweeteners?

I tried to Google (and PubMed) the question, but it seems to be fairly polarized debate and there does not seem to be a consensus as to whether sweeteners like asparatme, acesulfame etc. have ...
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2answers
153 views

Is identifying the genus of a fungus (mushroom specifically) enough?

Does the genus of a mushroom have enough information about it, without the species? Let's say I wanted to identify a mushroom (when picking) to see if I can safely pick and later eat it. Let's say I ...
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1answer
58 views

How do people measure how many calories or proteins/fats/сarbohydrates are in some food?

How is the composition (in fats, proteins or carbohydrates) of a certain food estimated and how is the amount of calories provided by the food calculated?
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1answer
423 views

Is it possible that there are unknown vitamins?

Is it possible that there are vitamins or other essential nutrients about which we still do not know?
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37 views

Does freezer burn affect only the cells on the surface of food?

Suppose i submerge a banana halfway through in a tray with water. Part of the banana is submerged in water, part of it is on the outside. The water and banana in the tray is being put in the freezer ...
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2answers
132 views

Why is Cacao a stimulant?

As I write this I've just eaten a fair amount of cacao (not cocoa) powder and it's given me quite a buzz. I've googled the effects and the Internet seems to think it's somehow psychoactive although it'...
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1answer
32 views

Searching a fructose degrading bacteria [closed]

my question is do you know a fructose degrading bacteria? Wich is straitforward to use and cultivate? Wich shouldn't create excrements, that can't be removed simple.
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1answer
120 views

Why do ADULTS need protein in their diet, if they are not growing? [duplicate]

Why do ADULTS need protein in their diet, assuming they are not growing? What happens to the amino acids already present in the body? Why don't our bodies conserve them?
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1answer
440 views

Are turkish hazelnuts edible?

The title of this question is Google suggestion verbatim, when I tried to write it. Yet, I found no answer specifically for Turkish hazelnuts. Turkish hazelnut is a tree and it's fruit looks ...
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2answers
134 views

Can you eat cancer cells without risk?

Afaik GMO products are not a real risk to health of course if they do not contain toxins. But how about cancer cells? Like say rhabdomyosarcoma which is more or less a muscle cancer found also in ...
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1answer
49 views

Why do alpha-gal allergies only occur after a tick bite if alpha-gal is already present in red meat?

I just read an NPR article about allergies to red meat being caused by tick bites. That stood out to me because I thought allergies are triggered by an initial exposure to some allergen. In this case, ...
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1answer
16 views

Who creates first nitrogen compounds in the food supply chain

As I understand the food supply chain, organic compounds have to be created from a unlimited source (air, water...). For instance, I figure that plants transform CO2 from air to organic carbon ...
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45 views

Why do humans enjoy spices? [duplicate]

It seems that many flavor and food preferences can be explained in the context of regulating feeding behavior. Generally, organisms tend to enjoy those foods which are optimal for them to feed on and ...
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1answer
39 views

How to estimate the amount of protein that are going to be synthesized?

I'm studying protein synthesis to understand how the body use the different amino acids to build proteins. In particular I would like to learn how to (roughly) calculate the total amount of protein ...
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22 views

Overall, for the most part, which is more important--capturing prey or surviving predators or parasites?

For animals in nature, does selection intensity tend to be stronger upon abilities used against parasites or predators or abilities used against prey? Any empirical reports would be appreciated. I ...
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59 views

Does boiling or frying fish make Omega3 be denatured?

I read some articles about omega-3, and I found there are two different opinions about how sensitive omega-3 is to heat. one is Applying heat to omega-3 make omega-3 become trans-isomer which is very ...
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1answer
160 views

Why there are no plants that offer salt fruits as opposed to sweet fruits?

Why there are no plants that produce salt fruits? Is it because other animals do not like salt to the same degree of humans?
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1answer
1k views

Is it possible to be allergic to the yolk of an egg but not the egg white?

At lunch one day, my friend had a hard boiled Easter egg. When he pealed it he squeezed the yolk, or yellow part, of the egg out. I asked him what on earth he was doing and he said, "I'm allergic to ...
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1answer
39 views

Nonpancreatic digestion of tryglicerides

In an answer about coconut oil I can read the digestion of coconut oil does not involve in the Pancreatic digestive enzyme system In both primary and secondary school I have learned that fat needs ...
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1answer
62 views

Is it possible to produce bread using only microorganisms?

I am wondering if it is theoretically possible to produce bread using only microorganisms. If one lists all the chemical components, proteins fermentation time, etc., is it then doable to combine the ...
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2answers
93 views

Do birds change their diet before migration?

Migration takes up a lot of energy, so I am wondering if birds (in my case mallards) change their diet / food preferences in the weeks before migrating. Do they select for more energetic foods to fuel ...
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Can combining C3, C4 and CAM plants in a greenhouse/vertical farm increase the efficiency of plant production?

I am reading a little about different types of photosynthetic systems in plants because I want to learn something about plant production in greenhouses/vertical farms (I have no experience in this ...