Friday, April 21, 2006

Is it worth drinking juice from concentrate?

I just confirmed it (have heard a lot of people say) today that juices from cocentrate (and pasteurized) are zero in nutrition. I was thinking that I was drinking healthy.

Source: Food Science: about juices

18 comments:

Captain Yesterday said...

What the brain-damamged fuck?

Sunny Randal said...

I agree with captain yesterday. Is this verifiable?

Anonymous said...

I don't agree your idea. Juice from juice concentrate is pure, nature, and have high nutrition. Because the juice concentrate is no any other deleterious additives adding. Straight get from the natural material.

Anonymous said...

Check this site for detailed info on juices, including juice from concentrate: http://extension.osu.edu/~news/story.php?id=2081
I am copy-pasting some portion from the link for your ready reference:
"I've read that the heat involved in concentrating juice destroys most of the nutrients. Is that true?

Nope. Juice that's made from concentrate is very similar in nutrition to juice labeled "not from concentrate."

According to the U.S. Department of Agriculture's Standard Nutrient Database, a cup of orange juice has about 110 calories whether it's fresh-squeezed or frozen, made from concentrate or not. Different types contain anywhere from 80 to 125 milligrams of vitamin C. Since people need only 90 milligrams of vitamin C every day, the difference doesn't matter much."
Hope it helps.

Anonymous said...

nuritionally they are both the same they both go through the same extraction process, packaging etc. in fact not from concentrate contains preservatives whereas from concentrate does not, as it is frozen for a shorter period of time preservatives have to be added so as it does not spoil and other chemicals may be added to make sure no bacteria is present which will be killed during the lenghthened freezing process of from concentrate.

Anonymous said...

Actually, to get the juice concentrated takes a lot of heating to "cook off the water". That process breaks down many of the antioxidants in juices. Some things may not be affected by that cooking but reasearch shows a lot is altered. It is a fact that heat denatures proteins and breaks down other chemicals. T

Rutey said...

T is absolutely correct. Vitamin C for example is particulary sensitive to heat and oxygen and light, for instance, if it is heated above 70 degrees all the vitamin c content has been destroyed, therefore freshly made juice is the way to go.

Anonymous said...

The production processes for FCOJ and NFC are identical right up to the final steps—both, for example, are pasteurized using heat. (Manufacturers have long experimented with alternatives methods of pasteurization, such as microwave technology, but none has yet proven economically feasible.) After pasteurization, the juice destined to become concentrate is run through a hot evaporator, which sucks out most of the water content. The result of this evaporation is FCOJ with a typical concentration of around 65 degrees Brix.

The not-from-concentrate juice is spared the evaporator; any heat beyond the bare minimum required for pasteurization may irrevocably damage the product. It is instead subjected to a less energy-intensive process to remove bitter peel oils, which can harm the flavor and may contain pesticides. To receive Florida's Grade A label, juice must contain less than 0.0035 percent peel oil. (The evaporator burns off the oil in FCOJ.) Not-from-concentrate juice is also deaerated, in order to preserve taste and vitamin content.

nocturnal said...

To the post above me... but as the two posts above you said, much of the nutrients get killed in the concentrated kind, so why drink it? The point of drinking fruit juice is because it's healthy for you. And it also tastes good. It's amazing how many wrong comments there are here. There is a reason they sell "from concentrate" much cheaper.

Anonymous said...

In order for the juice from concentrate to be labeled as "100% juice" by U.S. standards, the juice must have the same nutrient content as it did before concentration. Citric acid (vitamin C) may be added back to the product to boot vitamin content.

However, sugar content is usually still higher in concentrated juice rather than natural juices. Look at the nutrition facts on the label!

Darrell said...

There's a lot of good info on www.welchs.com. I actually emailed them to ask if there was a difference between their non-concentrated grape juice and the frozen concentrated grape juice, and they said no, absolutely none at all. All the antioxidants found in the juice are the same for both. The concentrate is cheaper. So why would they tell me that when I'm asking about if their are any health benefits? You "natuaral eat everything raw" freaks spread your opinions with no science.

Anonymous said...

to Darrel: So you are going to blindly listen to them, when it's in their financial interest to tell you that juice concentrate is just as good as real juice? It's like going to a car dealership and believe every word the salesman tells you, when they tell you that the car they're trying to sell you is pretty much the best thing since jesus christ...

Shawn said...

So, regarding your concentrated juice dilemma.

a) I am not sure I can trust the source that you used "Food Science: about juices". Though it may be 100%, I tried to look for her information on her own source and completely failed in looking for the evidence on that site. I try to read Q/A's where the answer has good credentials (such as "Nutritionist") or shows good resources...and you can tell if they are good...it should be blindly obvious.

b) I doubt that concentrated juices are particularly harmful to you. They are essentially the same as juices you buy from the store that are not found in frozen concentrate forms. Pasteurization is a relatively low heat form of processing meant to sanitize food from unhealthy bacteria. Not all bacterial is evil, but that's another topic. Milk is pasteurized it it doesn't particularly harm the proteins in that right?! Juices aren't a good form of protein anyway...you can get that from better sources like dairy or eggs...so killing protein in juices???? About antioxidants. I have done extensive research regarding this topic a few months back and the verdict is pretty much ambivalent. Some say its healthy, some say its harmful. My personal opinion based on my research is that it does help. However, it is not a necessity. Your body contains natural antioxidant mechanisms that help fight against ROS (oxidants). In fact, antioxidant supplementation seems to play a minor role relative to your natural antioxidant mechanisms. So, in effect, you don't need vitamin C strictly for antioxidant purposes. Things like vitamin C is very healthy for various other biochemical pathways and is essential for your body to function properly, but I don't think its use as an antioxidant is crucial, rather, it seems to be a mere added benefit. If you worried about oxidants, get good sleep, don't smoke, don't go drinking too often, exercise regularly without taking antioxidants prior to (new research based evidence that supplemented antioxidants aren't good during exercise)...and yeh eat right, but these are all natural things you should know and also my bit of 2 cents.

c) Based on superficial research, it seems like the only bad concentrate are those that contain significantly less than 100% juice. Reasoning is that these don't give give you the nutrients of a normal cup of juice. Also, stay away from added sugars...they are evil. If you want proof, do research, its very much out there that added sugars are not good for you. Also, try this. If you drink sodas regularly, stop drinking them for a good month or so and then drink it again...you should instantly notice the difference. I don't think them anymore after not having them for 3 months, you can taste the unhealthiness. Hope that helps, I'm not officially certified to know these things though I think you will find my information most correct.

-Shawn H,
student & knowledge addict :)

Anonymous said...

wow, you are like wiki Shawn :)

Anonymous said...

I think calling somebody "like wiki" is now more like an insult, however, I do agree with the sentiment :)

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Anonymous said...

juice from concentrate isnt'bad' for you in any way. there is basicaly no protein in juice heating does not make much of a difference to it, vitamin temperature is not too damaging to vitamins, look at jam (jelly american) where fruit has been boiled at temperatures hot enough to boil sugar, vitamins are still very present. the freezing process preserves nutrients in most foods except where water content may spoil it eg. buttermilk. there are better things to worry about such as palm oil.

Anonymous said...

umm, you have to look at sources people before suddenly exploding. What is it with Americans? I always that this country had people who always questioned before nodding there heads in unison to facts that do not even necessarily apply to all from concentrate fruit juice (depends on the process or steps they take in creating concentrate fruit juice.)Just look at the nutriion label. In America if you put up a false nutrition label, the company gets sued by said government so no worries over here