Any substance consumed to provide nutritional support for the body.

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2
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1answer
28 views

How are oranges in the US or anywhere made seedless?

How are oranges in the US or anywhere made seedless? Please explain the broad principles and not the technicalities.
3
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0answers
10 views

How is nutrient uptake in humans measured?

There are many claims made about nutrient absorption, eg "Juicing helps you absorb all the nutrients from the vegetables". I'm curious to know how nutrient uptake is measured. Eg is it a pure ...
4
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1answer
119 views

What exactly makes bananas go brown?

I know that often oxidation processes are mentioned when referring to the color change from yellow to brown in bananas (specifically: those that you get everywhere in supermarkets, with no seeds). ...
0
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0answers
23 views

Is there a biological reason for spreading food intake into breakfast-lunch-dinner?

I keep hearing over an over how humans can satisfy their entire daily caloric need in one sitting at a fast food restaurant. At the same time I'm looking at the kitchen plates, cups, etc, and they ...
2
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0answers
38 views

Book recommendation on selective breeding?

I am looking for a good book that gives a nice overview of the science and technics of selective breeding. I am particularly interested in the use of population genetics to support decision in this ...
2
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1answer
43 views

Why does ear wax taste sour?

Why does ear wax taste sour? I am interested in both the physiochemical mechanisms and the evolutionary reasons behind the sour taste of earwax.
1
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1answer
31 views

Does the lung absorb organic food?

Imagine you swallow something up and not everything gets out of the windpipe (this is possible right?). Would it be possible for the lung to handle with the rest implying that it is organic? Would it ...
15
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4answers
3k views

Can humans eat grass?

Can a human eat grass and digest it? Could it be possible to use it as food just like other plants such as wheat or beans?
0
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0answers
20 views

The biological basis of inflamatory foods: the list of attributes and the concrete example of milk vs kefir

I wonder if anyone has some interesting matterial on the biological basis of inflamatory foods. I'm interested in pin-pointing the (in)complete set of (known) causes in the form of a list and maybe ...
1
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0answers
34 views

What are current abiogenesis hypotheses for first food source?

What is the very first abiogenetic piece of reproducing life (small piece of RNA + ribosome that randomly occurred?) hypothesized to have used as an energy source? I'd be interested in sources to what ...
1
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1answer
34 views

Is it possible to use microalgae to produce food and live on it?

i got know microalgea can benifit a lot and it has not less protein and starch , and grows quickly, require less so is it possible to use them for producing food (replace rice and wheat) and live on ...
0
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1answer
72 views

Does avocado and orange have a common ancestor?

While I'm eating my orange, I felt as if I was eating avocado. It might be genetic manipulations perhaps but it made me think if they have a common evolutionary ancestor. Is there?
1
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0answers
33 views

Can juice become sweeter after packaging?

It seems like the orange juice thats been sitting in the fridge for awhile always tastes sweeter than the juice just brought from the grocery store. Can juice ripen in the container ?
1
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0answers
35 views

Why do animals only eat some parts of their food?

For example monkeys/apes only eat part of a fruit and then throw the rest. Cats (big and small species) only eat some parts of their prey and then they abandon it. Humans on the contrary leave as few ...
1
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2answers
278 views

Why aren't we allowed to refreeze previously thawed breastmilk in refrigerator?

https://www.breastfeeding.asn.au/bf-info/breastfeeding-and-work/expressing-and-storing-breastmilk Previously frozen— thawed in refrigerator but not warmed 4 hours or less (ie the next ...
3
votes
1answer
83 views

Does the body lose energy or gain energy relatively when drinking or eating hot things?

Does the body lose or gain energy when drinking or eating hot things compared to more neutral temperature things? On the one hand, The body could somehow convert the heat energy into human usable ...
1
vote
0answers
37 views

Will a garter snake eat unusual prey if made to smell like something normal?

I have noticed that my garter snake only eats after it has smelled it's prey to make sure it is a slug, and it doesn't matter whether it's moving or not. If I were to coat, say, a caterpillar with ...
0
votes
2answers
49 views

3 fates of this matter

When an animal eats something, it obtains matter and energy right? But, what are the 3 possible fates of the matter and 3 possible fates energy. I don't understand what they are even asking. What ...
1
vote
1answer
109 views

Eating rarely but a lot, or often but little

I wonder if it matters if an average person eats the same amount of food distributed between a few (2-3) meals during the day, or constantly having small snacks. I'm interested in several aspects of ...
1
vote
1answer
80 views

Does animal fat and meat contributes differently to our body?

Is animal fat harmful to our body or is it harmful if the amount eaten exceeds a certain amount? I have heard fat is more concentrated than protein. If I am correct then we can get more energy from ...
1
vote
1answer
242 views

What should be evaluated in food decomposition experiment?

Briefing Some days ago I noted that 3 cookies left on my desk since 3 months ago are still "fresh", and by that I mean... not spongy like some cookies that get soft after some time outside. However ...
0
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0answers
47 views

Biological/molecular basis of nutritional need differences between blood types?

There are many nutrition books and websites (like http://www.aqua4balance.com/Healthy-Diet/blood-type-nutrition-educational-workshop.html) that assign very different nutritional needs to individuals ...
3
votes
1answer
108 views

Why does the stomach ache if you take a brisk walk after lunch or dinner

After eating your lunch or dinner, if you take a brisk walk, most of the time your stomach aches. Why does that happen? What happens with respect to the body metabolism?
1
vote
1answer
2k views

White eggs can be considered as non-vegetarian?

I am basically a vegetarian and I find it very difficult to get an actual biological answer for this question on search engine. There are couple of links which discuss these argument but can not be ...
1
vote
1answer
61 views

Botulinum Toxin

I asked on the cooking site, but was directed here. This is my original question http://cooking.stackexchange.com/questions/35726/botulinum-toxin-in-home-canned-green-beans The reading is quite ...
1
vote
2answers
55 views

Why might food spoil faster in Ireland than the US?

An American is staying in my house for the summer and claims that food (specifically, bread and milk) spoils a lot faster here than at home in California. Is there a significant difference in chemical ...
1
vote
0answers
61 views

Should pasteurised milk go bitter instead of sour when it is close to its expiration date?

I bought some milk today on a special offer, its expiration date being tomorrow, and after leaving it outside, in one of the still-sealed boxes, for a few hours, the milk went bitter. But milk ...
1
vote
1answer
113 views

How many honeybees are there, and how has the number changed across time?

How would you begin to estimate the world population of the European Honeybee (Apis mellifera)? Would recent colony collapse disorder show up as a blip? How about the spread of A. mellifera from ...
1
vote
1answer
60 views

Is iodised salt harmful to the lactofermentation process?

I was discussing sauerkraut recipes with someone on IRC a minute ago, and they warned me not to use iodised salt in the process. My first (and so far, the only successful) batch is one I made with ...
3
votes
1answer
766 views

Why do kefir grains stop growing in soy milk?

Kefir is a fermented milk drink made with kefir grains. It usually is prepared by inoculating cow, goat or sheep milk with kefir grains. I would like to prepare the drink with soy milk, which worked ...
5
votes
1answer
217 views

Why does ostrich meat look and taste more like beef than chicken?

Some time ago I tasted ostrich meat, and what was amazing to me was that the meat very much resembled beef, much more than it resembled chicken, turkey or duck meat. And even more than lamb and pork ...
0
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2answers
69 views

What nutritious insects exist to farm that require the least attention?

What nutritious insects exist to farm that require the least attention? I'm looking to automate simply, in a self regulating way. Edit: To add detail, I imagine the insects would live densely in a ...
3
votes
1answer
60 views

Would non-human carnivores be able to survive on farmed foods?

Certain creatures that are considered carnivores are non-obligate carnivores and are technically omnivores (such as wolves/dogs). How different is the potential digestive ability of these species ...
2
votes
1answer
297 views

Meat and mushroom allergies, why are they so rare?

There are a lot of food allergies, but for some reason not to meat (mammalian meat or poultry) or mushrooms. I've googled a bit, and now I know that one can actually have a meat or mushroom allergy, ...
0
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0answers
31 views

Ovalbumin Detection

Is there a practical way to detect whether or not a baked good has egg in it? I'm thinking of something that can be brushed on to evolve a color change. Any help is appreciated.
1
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1answer
53 views

Is Schoons Hard Shell muskmelon a hybrid?

Would Schoon's Hard Shell muskmelon be considered a hybrid as I have read it was a cross between a Bender's Surprise and a Honey Rock.
2
votes
1answer
37 views

What are ways to compare the “costs” and “gains” of food production systems?

I'm looking for methodologies to compare the costs a food production requires with the gains it delivers (not in economic terms). I'm aware of energy returned on investment. Are there other methods ...
2
votes
1answer
39 views

Storing Apples at 30F?

This article about storing apples for the winter says: You do not want the apples' temperature to fall below 30°F (-1.1°C), however, because that will make them freeze and turn to mush when ...
0
votes
1answer
94 views

What causes peanut allergies?

Surveys show that 0.6 percent of the US population has an allergic reaction to peanuts. This prevalent allergy has even prompted some to ban peanuts from schools altogether. I am completely ...
0
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2answers
107 views

Why do some people find vegetables so repellent when evolutionarily they should find them an attractive and thus tasty food?

Why do certain people (especially kids) find vegetables so "repellent" when evolutionarily they should find them an attractive and thus tasty food? I ask this question because if Darwin's theory of ...
1
vote
2answers
341 views

How do animals decide what to eat and what not?

I want to know this in particular about animals that no longer eat what they used to eat. The best example in my opinion are chickens. Chickens are often held to eat all kinds of food we would ...
2
votes
0answers
123 views

How much food can an average person eat, and which animal is that equivalent to?

When the average person overeats, how much food can he eat in a day? Which animal's average meal would that be equivalent to? When documentaries are talking about animals feed, they usually say ...
2
votes
2answers
109 views

Lactose Intolerance

What nutrition is given to infants who are lactose intolerant? I understand, in today's day and that age we have non-lactose formula milk, but what happened, before lactose-free milk was created, to ...
4
votes
0answers
65 views

What are the mechanisms that cause bananas to ripen? How is or isn't it related to the banana peel ripening? [closed]

So recently our commercial kitchen got some bunches of bananas with a curious feature. On the inside they were firm and delicious (no jokes, please), on the outside they looked incredibly sickly. ...
8
votes
4answers
2k views

What nutrients can humans absorb in the mouth?

For instance, I realise being able to absorb simple sugars in the mouth is pivotal in the rapid action of oral glucose gel. Thus I was wondering what nutrients in general can be absorbed directly ...
2
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0answers
69 views

What are the physiological effects of wine?

I have read that alcohol in general and wine in particular can have advantageous as well as detrimental effects on human health. Is this true? What are the physiological effects of consuming wine in ...
1
vote
0answers
25 views

Glutamine analysis

I use to run a method to analyse all the aminoacids in a food sample. For that I have to hydrololyse the sample and in the last stage of the method I read the amino acids with a ion exchange ...
6
votes
1answer
95 views

Cooking with sawdust

In a book about post-war Japan (Embracing Defeat, Dower) the author mentions a process for making sawdust at least partially edible, so it could be used in recipes in a 1:4 ratio with flour for ...
5
votes
2answers
3k views

Why can't you taste food when you have a cold?

It is a common observation that food is tasteless when we have a cold. Why is that so? What is the cause of inability to taste when we have a cold? Are the nose and ability to taste connected?
6
votes
1answer
316 views

If re-boiling does not curdle the milk, can that be taken as an indicator that the milk hasn't developed the bacteria (and their toxins)?

Usually when left in hot temperature, the milk curdles (which I know when I boil it and it starts separating). If the re boiling does not curdle the milk, can that be taken as an indicator that the ...