Common sources of protein in protein supplement drinks


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Common sources of protein in protein supplement drinks

  1. 1. Common Sources Of Protein In Protein Supplement Drinks/ShakesThere are many common ingredients used in the manufacture of protein supplements( ). However the marketing for all proteinsupplements is very much alike. How can that be if different ingredients are used? Eachingredient used as the source of protein has different characteristics and benefits forboth the consumer and the manufacturer. Below you will find a summary of the keypoints to consider when purchasing protein supplements with regards to the mainingredient used for the protein source. You may be surprised at the differences. Youmay also realise you have subsequently been tricked into thinking the protein you takeregularly is the best for you. We have found through our research that many people fallinto this kind of trap.Whey Protein ConcentratePros: Reasonably high protein content, additional health benefits and cheap tomanufactureCons: Higher levels of fat and carbohydratesModern concentrates contain as high as 70-80% protein content with reduced amountsof lactose and fat. WPC is not the worst of the proteins but far from the best and doescontain significantly less protein per serving on a gram for gram basis than an isolate.Further drawbacks are that whey protein concentrates also have higher fat and lactosecontents and as a result have lower protein contents per serving.A high quality whey concentrate will also contain other naturally occurring items suchas growth factors like IGF-1, immunoglobulins and lactoferrin, which improve yourimmune system and increase your antioxidant protection. However, using a very highquality concentrate makes the final product more expensive to produce.Hydrolyzed Whey ProteinPros: Faster absorption of proteinCons: Lack of study regarding the advantage to athletes and bad tastingMany people will remember hydrolyzed proteins were all the rage a few years ago, butthen dropped off sharply. "Hydrolyzed" basically means the protein has been brokendown partially into peptides of different lengths. Because the protein is already
  2. 2. partially broken down it is absorbed faster, which may have positive effects undercertain circumstances, such as certain metabolic conditions (i.e. burn victims or peoplewith certain digestive disorders and pre-term infants).Whether or not hydrolyzed proteins are truly advantageous to athletes has yet to beproven. The hype over hydrolyzed proteins was based pretty much on one rat studythat found fasted rats given hydrolyzed protein had higher nitrogen retention then ratsfed whole protein. However no one ever followed this up with a human study showingthe same results. Regardless, the reason hydrolyzed protein supplements never becamemore popular was due to the fact they tasted awful, were expensive and lacked enoughdata to really support its use.Whey Protein Ion Exchange IsolatePros: Very high protein contentCons: Removes other beneficial compounds which gives whey protein its benefitsIon exchange is made by taking a concentrate and running it through what is called an"ion exchange" column to get an "ion exchange whey isolate." Sounds pretty fancy butthere are serious drawbacks to this method. Due to the nature of the ion exchangeprocess, the most valuable and health promoting components are selectively depleted.Though the protein content is increased, many of the most important sub-fractions arelost or greatly reduced.This makes ion exchange isolates a poor choice for a third-generation whey proteinsupplement, though many companies still use it as their isolate source due to the higherprotein content and lower cost of manufacturing.The pros of an ion exchange whey are it provides highest protein content per gram, butthe cons outweigh this as the higher protein content comes at cost such as a loss ofmany of the sub-fractions unique to whey which can provide users with additionalhealth benefits.Soya & Pea ProteinPros: Very high protein content, low in fats and good for reducing cholesterolCons: Incomplete amino acid profiles, poor digestion and bad tasteThese are cheaper forms of protein which have high protein content, but also generallyhave incomplete amino acid profiles which are lower than their dairy alternatives. Theyalso contain typsin inhibitors which interfere with protein digestion. The bad taste isalso a big limiting factor in the use in sports supplements.They do have benefits of reducing cholesterol and triglycerides, being low in fats andcarbohydrates as well as being a cost effective form of protein.
  3. 3. Whey Protein Isolate 92%Pros: A rich protein source with very little lactose and no fat with fast absorption of aminoacidsCons: A more expensive product due to it being a rich protein source with very few poorqualitiesWPIs generally contain as much as 90-96% protein. Research has found that only wheyproteins in their natural undenatured state (i.e. native conformational state) havebiological activity.Processing whey protein to remove the lactose, fats, etc. without losing its biologicalactivity takes special care by the manufacturer. The protein must be processed underlow temperature and/or low acid conditions as not to "denature" the protein and thisbecomes an even greater concern when making high grade isolates versus concentrates.Whey protein isolate contains >90% protein contents with minimal lactose and virtuallyno fat. The advantage of a good whey protein isolate is that it contains more protein andless fat, lactose, and ash then concentrates on a gram for gram basis.The fast release of protein makes it ideal to take before and after exercise as the aminoacids are absorbed quickly. The absorption time for amino acids from WPI powders isestimated between 10 minutes to 1 hour to be fully digested. This will allow your bodyto begin building lean muscle definition and increase your strength shortly afterexercise. In addition, this enables your body to begin repairing muscles very soon afterexercise which will assist with avoiding muscular deterioration.Whey protein isolate has high levels of essential and non essential amino acids foraiding muscle recovery and providing all the building blocks required for muscle andtissue growth. It is also high in other naturally occurring items such as IGF-1 (growthfactor), immunoglobulins and lactoferrin, which improve your immune system andincrease your antioxidant protection.Calcium CaseinatePros: A slow-release protein source for optimum recovery and growthCons: Bad tasting and poor mixabilityA protein synthesised from fresh skimmed milk and is rich in amino acids and calcium, whilebeing low in fat, sodium and lactose. It is the perfect protein supplement to take before bed,first thing in the morning with breakfast or post-workout, by anyone looking to supportmuscle growth and recovery whilst training. Calcium caseinate is digested slowly by thebody, resulting in a sustained protein release to muscle tissue, and as a result betterabsorption of amino acids. This makes it the perfect protein supplement to take when
  4. 4. gradual protein absorption is key, for example when high protein meals cannot beconsumed in the immediate term.Article Submitted By