Monosodium glutamate (MSG) was invented in the early 1900s by Japanese chemist Kikunae Ikeda , who first isolated the umami-tasting compound from seaweed broth in 1908 and then patented a method to produce it.

Quick Scoop: Who Invented MSG?

  • MSG as a commercial seasoning traces back to Kikunae Ikeda, a chemistry professor at Tokyo Imperial University.
  • While studying why kelp-based soup (dashi) tasted uniquely savory, he isolated glutamic acid as the source of this new “fifth taste,” later called umami.
  • In 1909 he patented a production process and, together with entrepreneur Saburosuke Suzuki, began mass-producing MSG under the brand name Ajinomoto (“essence of taste”).

A Tiny Origin Story

At the start of the 20th century, Ikeda noticed that simple broths made with kelp had a deep savoriness that did not fit into sweet, sour, salty, or bitter.

Curious, he evaporated and processed liters of seaweed broth until he obtained crystals of glutamic acid, discovering that adding these crystals back to food recreated that same rich, savory taste.

In essence, one scientist trying to understand why his soup tasted so good ended up creating a seasoning used in kitchens and food factories all over the world.

From Lab Bench to Pantry Staple

  • 1908: Ikeda identifies glutamate from kelp as the source of umami and recognizes that its sodium salt, monosodium glutamate, is ideal as a flavor enhancer.
  • 1909: He secures a patent for MSG production and partners with Suzuki to industrialize it, launching Ajinomoto as a brand.
  • Over the following decades, MSG spreads from Japan to China, Taiwan, and eventually the United States, becoming a standard seasoning in processed foods and restaurant cooking.

Why Ikeda Gets the Credit

  • Earlier cuisines had umami-rich ingredients (like aged cheeses, soy sauce, and meat broths), but no one had isolated and named the specific compound responsible.
  • Ikeda not only discovered the chemical basis of umami but also transformed it into a stable, easy-to-use crystalline product—MSG—that could be sold worldwide.
  • Because of this combination of scientific discovery, naming of the umami taste, and commercialization via Ajinomoto, he is widely recognized as the inventor of MSG.

Today’s View and Ongoing Talk

  • Today, MSG is produced by fermenting starches or sugars (like sugar beets, sugar cane, or molasses) and is used globally in snacks, soups, seasonings, and restaurant dishes.
  • Public debate about MSG’s safety has shifted over time; modern reviews by scientific and regulatory bodies generally consider it safe for the general population when consumed at typical dietary levels.

Bottom line: When people ask “who invented MSG,” the answer is Kikunae Ikeda—the Japanese chemist who turned the mysterious savoriness of kelp broth into the crystallized umami booster sitting in shakers and food factories around the world.

Information gathered from public forums or data available on the internet and portrayed here.