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#11
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Incomplete Protein or Not?
Double wrote: http://veggietable.allinfo-about.com...s/protein.html It says in the above link "the only problem is that vegetable sources of protein, with the exception of soybeans, are not complete proteins, so you need to eat more than one in order to get the complete protein." so, is soy complete? what about chickpeas? I learned the following about 30 years ago, so please take it with as many grains of salt as is appropriate. Yes. Soybeans are the only vegetable source of a complete protein as they do contain all of the 8(?) essential amino acids and they are also in the correct proportion required for them to create the remaining amino acids. Thus, soybeans equate to a whole protein. I don't know about chickpeas, but I doubt that they are a complete protein. Donna |
#12
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Incomplete Protein or Not?
I know you just said to take it with a grain of salt, and i have. However I
just did a google newsgroup search and found alot of people who seem to say it is incomplete and a handful of people who say it is complete. It's kind of amazing that nobody seems to know the facts, or at least the contemporary views, on this basic question. "Donna Lantello" wrote in message ... Double wrote: http://veggietable.allinfo-about.com...s/protein.html It says in the above link "the only problem is that vegetable sources of protein, with the exception of soybeans, are not complete proteins, so you need to eat more than one in order to get the complete protein." so, is soy complete? what about chickpeas? I learned the following about 30 years ago, so please take it with as many grains of salt as is appropriate. Yes. Soybeans are the only vegetable source of a complete protein as they do contain all of the 8(?) essential amino acids and they are also in the correct proportion required for them to create the remaining amino acids. Thus, soybeans equate to a whole protein. I don't know about chickpeas, but I doubt that they are a complete protein. Donna |
#13
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Incomplete Protein or Not?
Double wrote: I know you just said to take it with a grain of salt, and i have. However I just did a google newsgroup search and found alot of people who seem to say it is incomplete and a handful of people who say it is complete. It's kind of amazing that nobody seems to know the facts, or at least the contemporary views, on this basic question. I wrote : Double wrote: http://veggietable.allinfo-about.com...s/protein.html It says in the above link "the only problem is that vegetable sources of protein, with the exception of soybeans, are not complete proteins, so you need to eat more than one in order to get the complete protein." so, is soy complete? what about chickpeas? I learned the following about 30 years ago, so please take it with as many grains of salt as is appropriate. Yes. Soybeans are the only vegetable source of a complete protein as they do contain all of the 8(?) essential amino acids and they are also in the correct proportion required for them to create the remaining amino acids. Thus, soybeans equate to a whole protein. I don't know about chickpeas, but I doubt that they are a complete protein. Donna Try the definition found in Wikipedia: http://en.wikipedia.org/wiki/Soybean More specifically, this quote from the page: "Soybeans are considered a source of complete protein, i.e., protein that contains significant amounts of all the essential amino acids that must be provided to the human body because of the body's inability to synthesize them." Donna |
#14
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Incomplete Protein or Not?
Double wrote in message ... I know you just said to take it with a grain of salt, and i have. However I just did a google newsgroup search and found alot of people who seem to say it is incomplete and a handful of people who say it is complete. It's kind of amazing that nobody seems to know the facts, or at least the contemporary views, on this basic question. The definition of essential and nonessential (or more commonly now indispensible and despensible) and thus the definition of whether a protein is complete or incomplete is not such a clear cut issue as you would like to make it. Metabolically speaking, only three of the amino acids are indispensible in that the body could concievably manufacture any of the other twenty in at least some quantity given the necessary building blocks. Nutritionally speaking, all of the amino acids are indispensible in that they are needed for good health. Whether complete or incomplete proteins are being consumed is far less important than the total amount of protein that is consumed. The WHO estimates that to maintain nitrogen balance (a rough biomarker for maintenance of lean body mass) the average adult requires 0.8g per kg of body weight. Since in affluent societies protein does not come from a single source, it is highly unlikely that any normally active individual eating this recommended minimum amount of protein would be deficient in any amino acid. Given all this, I think the original question is foolish. Can an individual meet all their need for amino acids by eating chickpeas alone? No, and why would you want to? And even if a "just chickpea" diet could meet all amino acid requirements there are a host of mineral and vitamin deficiencies that would need to be addressed. Whether one chooses to be vegetarian or not, the basic nutritional advice of eating a well-balanced diet of a wide variety of foods is sound. |
#15
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Incomplete Protein or Not?
Matthew Venhaus wrote in message ... Nutritionally speaking, all of the amino acids are indispensible in that they are needed for good health. This should say functionally speaking, rather than nutritionally speaking. |
#16
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Incomplete Protein or Not?
Double wrote in message news ---------- My yoga teacher says you need to mix beans with whole grain rice in order to get a complete protein and a friend of mine said this is not true and that you can get a complete protein from beans (she specifically named chickpeas, and I have read online that soy can also provide this). --------------- Can an individual meet all their need for amino acids by eating chickpeas alone? No, and why would you want to? And even if a "just chickpea" diet could meet all amino acid requirements there are a host of mineral and vitamin deficiencies that would need to be addressed. Whether one chooses to be vegetarian or not, the basic nutritional advice of eating a well-balanced diet of a wide variety of foods is sound. |
#17
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Incomplete Protein or Not?
The definition of essential and nonessential (or more commonly now
indispensible and despensible) and thus the definition of whether a protein is complete or incomplete is not such a clear cut issue as you would like to make it. I'm not "making" this issue, this is an issue my yoga teacher brought to my attention. She said that we should all be eating whole grains and beans because beans alone are not a complate protein. My question is whether or not this is true. Metabolically speaking, only three of the amino acids are indispensible in that the body could concievably manufacture any of the other twenty in at least some quantity given the necessary building blocks. Nutritionally speaking, all of the amino acids are indispensible in that they are needed for good health. Whether complete or incomplete proteins are being consumed is far less important than the total amount of protein that is consumed. The WHO estimates that to maintain nitrogen balance (a rough biomarker for maintenance of lean body mass) the average adult requires 0.8g per kg of body weight. Since in affluent societies protein does not come from a single source, it is highly unlikely that any normally active individual eating this recommended minimum amount of protein would be deficient in any amino acid. Given all this, I think the original question is foolish. Don't say my questions are foolish, because that's insulting. I could easily say your response is that of a condescending prick, but that would be insulting also wouldn't it. I truely don't understand the tangent you have gone on into in responding to my question, but the question I had was very simple, and I will repeat it: ---------- My yoga teacher says you need to mix beans with whole grain rice in order to get a complete protein and a friend of mine said this is not true and that you can get a complete protein from beans (she specifically named chickpeas, and I have read online that soy can also provide this). --------------- Either the answer is that my yoga teacher is right or that my friend is right. And if my friend is right, which ones provide complete proteins? If the fact that they are complete or incomplete is not very important is a seperate issue, and if there are no such thing as "essential amino acids" this is news to me but whether they are complete or not is something THEY brought to MY attention, so I am posting this NON-FOOLISH question to this group about diet. If you have no ability to help beyond giving an overly complicated answer that only a nutrition expert would understand and then insulting the question in the first place, I will pass on your advice because you seem like a prick. |
#18
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Incomplete Protein or Not?
Double,
This is the old theory of "protein combining" from the 70's. It was made a popular belief through the book _A Diet for a Small Planet_ by Frances Moore Lappe. The idea is that the combined amino acids in a meal should match that contained in meat. Since rice has some of the amino acids contained in meat but not others, another food should be added which has an abundance of those other amino acids, such as beans. The research behind this was based on the study of the nutritional needs of rats. Of course, people have different nutritional needs than rats do. In any case, it has long been established by the scientific community that humans do not need to eat all of the essential amino acids together in one meal. Rather, they merely need to be eaten within the same 24-hour period (perhaps up to a couple days, my memory is a bit fuzzy on the specific duration). As it turns out, any diet which contains a variety of plant foods easily meets a person's needs for protein. Eating a diet composed entirely of a small number of foods will lack a great number of important nutrients. Variety is essential for good nutrition. Soybeans are indeed a superb source of protein. Two studies I am aware of rank soy protein as more biologically available to humans than beef. [1] However, eating an excessive amount of soy will force out other sources of nutrients in the diet and may even introduce toxic amounts of some nutrients. This information is generally common knowledge among nutritionists, however if you would like references to academic sources I can provide them for you. Regards, Scott (who is not a dietician but enjoys reading journal articles about nutrition) [1] Schaafsma, G. 2000. The protein digestibility-corrected amino acid score. J. Nutr. 130 (7): 1865S-67S; Henley, E. C., and J. M Kuster. 1994. Protein quality evaluation by protein digestibility corrected amino acid scoring. Food Technology 48 (4): 74-77. Double wrote: I have a question for you folks. My Yoga teacher told our class that when you eat a vegetarian diet you need to be mindful that you get all essential amino acids from the proteins we eat, for instance beans should be mixed with whole grain rice for example. Then I talked to a friend of mine the other day who said that this was an old theory and that it is possible to get complete proteins from some beans, such as chickpeas and other types of beans and things (non-animal based). |
#19
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Incomplete Protein or Not?
"Matthew Venhaus" wrote in message ... Double wrote in message news ---------- My yoga teacher says you need to mix beans with whole grain rice in order to get a complete protein and a friend of mine said this is not true and that you can get a complete protein from beans (she specifically named chickpeas, and I have read online that soy can also provide this). --------------- Can an individual meet all their need for amino acids by eating chickpeas alone? No, That was the question. Thanks for the answer. and why would you want to? I don't know why one would want to...I don't want to, I was just trying to verify some information. And even if a "just chickpea" diet I never mentioned anything about a "just chickpea" diet. I just asked a simple question about amino acids in chick peas to resolve two arguments which have been presented to me by two different people...My yoga teacher and my friend. I will base my diet around this information, not directly off it. could meet all amino acid requirements there are a host of mineral and vitamin deficiencies that would need to be addressed. That is probably true, but I never asked you about vitamins so I don't understand how that is relevent. Whether one chooses to be vegetarian or not, the basic nutritional advice of eating a well-balanced diet of a wide variety of foods is sound. That is fine, you answered my question so I apologize for insulting you. Thank you for your time. |
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