Study under review: Umami flavor enhances appetite but also increases satiety
A recent study evaluated the effects of monosodium glutamate (MSG) in combination with inosine 5'-monophosphate (IMP) on satiety.
The goal of the study was to determine whether these compounds help induce satiety and thus may help us eat less. First, let's define some important terms:
Umami: Savory flavor. Foods that naturally have umami flavor include meats, seafood, mushrooms (especially shiitake mushrooms), aged cheeses like parmesan, soy sauce, and nutritional yeast. These foods are umami because they are rich in free glutamic acid, a naturally occurring amino acid, or other nucleotides such as inosine 5'-monophosphate (IMP).
Monosodium glutamate (MSG): This compound is often added to chips, sausages, and Chinese food as a flavor enhancer. MSG enhances the umami flavor of the food. In this study, MSG was used as a substitute for the free glutamic acid found in natural foods. Inosine 5'-monophosphate (IMP): This compound occurs naturally in meats exhibiting a strong umami flavor as well as other umami foods. When MSG and IMP are present together, they may act synergistically to increase the umami flavor.
Other Articles in Issue #01 (November 2014)
- Ask the Researcher
Interview: Dr. Scott C Forbes, Ph.D, CSEP-CEP
Dr. Scott C Forbes is a professor of Human Kinetics at Okanagan College in Canada. He recently co-authored “Creatine timing on muscle mass and strength: Appetizer or Dessert?”. We thought we’d ask him a few questions.
The best weight-loss diet is the one you can stick to
Comparison of weight loss among named diet programs in overweight and obese adults (a meta-analysis).
The Shady Underbelly of “Evidence” Based Medicine
Op-ed discussing the importance of always digging into the people behind the research. Just because it's published, it doesn't make the information true.
The issue of morning coffee and subsequent appetite
The effects of coffee and caffeine on appetite, gastric emptying and energy intake.
Dopamine signaling and overeating
Striatal dopamine D2-like receptor correlation patterns with human obesity and opportunistic eating behavior.
Another benefit of omega-3s: A better treatment for epileptic seizures
Fish oil (n-3 fatty acids) in drug resistant epilepsy: a randomized placebo-controlled crossover study.
New data on liver damage from bodybuilding supplements
Liver injury from herbals and dietary supplements in the U.S. drug-induced liver injury network.
Sweeteners on trial: High saccharin intake shifts gut microbiome impairing glucose disposal
Artificial sweeteners induce glucose intolerance by altering the gut microbiota.
Investigating mango as a functional food
Mango supplementation improves blood glucose in obese individuals.