Monosodium glutamate (MSG), commonly known as "bot ngot" or "mi chinh" (Vietnamese terms for MSG), is a widely used flavor enhancer in food preparation. It derives from L-glutamic acid, a non-essential amino acid that the body can synthesize and is also naturally present in many foods.
MSG appears as odorless, white crystals that dissolve easily in water. When dissolved, it separates into sodium and free glutamate. MSG imparts the umami taste, one of the five basic tastes alongside sweet, sour, salty, and bitter. Umami is characterized by a savory, meaty flavor, often found in protein-rich foods.
Leading organizations, including the Joint FAO/WHO Expert Committee on Food Additives (JECFA), the Scientific Committee on Food of the European Community (EC/SCF), and Vietnam's Food Safety Authority (Ministry of Health), confirm that MSG is a seasoning safe for daily consumption.
Benefits
The acceptable daily intake (ADI) for MSG is approximately 30 mg/kg of body weight per day. Consumed in moderation, MSG can offer several health benefits.
Reduced sodium intake
Excessive sodium intake increases the risk of high blood pressure, kidney disease, and cardiovascular disease. While MSG contains sodium, it has about one-third the amount found in table salt. Therefore, using MSG can enhance food flavor while reducing overall salt consumption.
Increased satiety
MSG consumption may increase satiety, potentially leading to reduced calorie intake at subsequent meals. It can also decrease cravings for salty foods. However, MSG's effect depends on the food type it accompanies, such as protein-rich, carbohydrate-rich, or low-calorie foods.
Potential impacts
Individual MSG tolerance varies, but excessive intake can affect health. Side effects typically emerge when consumption exceeds 30 mg/kg of body weight per day. Some individuals may experience MSG symptom complex, characterized by temporary symptoms like headaches, facial flushing, dizziness, or numbness.
Considerations for use
Use small amounts: MSG enhances food flavor, but only a small quantity is needed.
Avoid overuse: MSG's impact on appetite and calorie intake varies individually. While some find MSG makes food more palatable, others might consume more than usual.
Incorporate into healthy dishes: MSG can be added to nutritious foods like stir-fried vegetables, soups, broths, or lean meats.
Do not add to already salty dishes: As MSG contains sodium, avoid adding it to foods already high in salt.
Read food labels carefully: MSG occurs naturally in many protein-rich foods such as chicken, fish, shrimp, crab, and cheese, as well as in vegetables like tomatoes, onions, cabbage, peas, spinach, mushrooms, and broccoli. It is also an additive in various processed products, including cold cuts, sausages, canned soups, instant noodles, and soy sauce. On food labels, MSG may appear as monosodium glutamate, MS, or E621.
By Bao Bao (According to Health, Healthline)
