Questions tagged [food]

Any substance consumed to provide nutritional support for the body.

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3
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1answer
26 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 ...
3
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0answers
53 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 ...
1
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0answers
44 views

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 ...
0
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0answers
20 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 ...
0
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0answers
44 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 ...
-1
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3answers
164 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 ...
-1
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1answer
33 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?
1
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1answer
50 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 ...
0
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0answers
25 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 ...
1
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1answer
68 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: ...
0
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0answers
30 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....
1
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1answer
49 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?
0
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1answer
61 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?
4
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1answer
65 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 ...
3
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3answers
52 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 ...
0
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0answers
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-...
0
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0answers
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 ...
2
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0answers
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 ...
0
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0answers
11 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 ...
0
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0answers
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 ...
2
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2answers
126 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 ...
0
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1answer
57 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?
2
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1answer
380 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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0answers
34 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 ...
5
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2answers
121 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
26 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
67 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?
3
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1answer
139 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 ...
4
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2answers
124 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 ...
1
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1answer
47 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, ...
0
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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 ...
3
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0answers
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 ...
-1
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1answer
36 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 ...
1
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0answers
21 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 ...
1
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0answers
58 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 ...
4
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1answer
119 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?
5
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1answer
801 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 ...
0
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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 ...
0
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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 ...
4
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2answers
83 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 ...
1
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0answers
72 views

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 ...
2
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2answers
338 views

Are peanut proteins similar to chicken meat proteins?

I'm studying amino acids content in vegetable food. I was looking at peanut protein and noticed its similarity with chicken meat, as you can see in the table below (quantities are measured in grams). ...
0
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1answer
156 views

Use lab agar for cooking [closed]

Our lab manager suspect that something wrong with our lab Bacto agar (Difco). So she decide to throw it to the garbage. I think that it's just a waste to throw that thing. Can someone think of reason ...
0
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1answer
97 views

Does minimizing hunger maximize weight gain?

Due to the "obesity epidemic," there is a lot of focus on the causes of weight gain. We typically talk about strategies to cause weight loss, but what about strategies to minimize/maximize hunger? ...
28
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2answers
8k views

Why don't chilli peppers taste as hot in space?

The following commentator writes: Chili peppers don’t taste as hot in space as they do on Earth. Nobody knows why. We know that the 'hot' feeling of chilli peppers is caused by Capsaicin. We read: ...
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0answers
116 views

Is the primary evolutionary purpose of a fleshy fruit to benefit the sprouting seed or the frugivorous seed disperser animal?

In a question about the low protein content in fruits, one answer suggests the energy, carbohydrate, and protein content in a fruit evolved to entice animal seed dispersers, not foster the sprouting ...
2
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1answer
153 views

What is this grainy surface on my two-week-old sourdough starter?

I'm baking bread at home as a hobby, using sourdough. After skipping one baking day, I haven't used my sourdough starter for two weeks. When opening the jar in which I keep it, I saw the surface had ...
4
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1answer
304 views

What really causes the toxicity of wrongly-thawed meat?

(Note: I've seen multiple related questions over at Cooking.SE, but I'm looking for a scientific explanation, not cooking advice!) I've been researching this for a couple of hours but the more I read,...
3
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0answers
55 views

Difference between feral and domesticated honey?

Is there any significant differences in composition (and/or taste) between the honey of wild ("feral") honeybees versus that of domesticated ones used in beekeeping?
0
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1answer
588 views

Does pepsin digest plant protein?

This may sound trivial, but... Protein is sourced from plants and animals. Pepsin and HCl digest meat (animal protein). Does pepsin also digest plant-based proteins? I took a look at few articles ...