Absorption Comparison Test Conducted for Rice-Derived 'Rice Magnesium': New Findings on 'Gradual Absorption and Sustained Effect'

Studying rice bran. Tsuno Food Industrial Co., Ltd. (Headquarters: Ito-gun, Wakayama Prefecture; Representative Director: Fumi Tsuno; https://www.tsuno.co.jp/) has revealed through a human absorption comparison test that its proprietary plant-based magnesium material derived from rice bran, 'Rice Magnesium,' exhibits more sustained absorption characteristics compared to magnesium materials such as those derived from minerals. This property suggests potential contributions to maintaining stable sleep, muscle fatigue care during long-duration sports, and a reduced likelihood of laxative effects.

■ What is Rice Magnesium?
While general magnesium ingredients are primarily derived from minerals, Rice Magnesium is a rare plant-based magnesium material derived from domestic rice bran, developed by the company through years of rice bran research.
Product Name: Rice Magnesium (RICEMAGNESIUM)
Composition: Magnesium Phosphate (Magnesium content of 15% or more)
Raw Material: Domestic Rice Bran

■ Research Background
Magnesium is an essential mineral for health maintenance, involved in sleep, stress care, and muscle conditioning. With intake deficiencies highlighted in reports such as the 'Dietary Reference Intakes for Japanese (2025)' and materials by the U.S. National Institutes of Health (NIH), the magnesium supplement market is expanding. To meet diverse needs, the company conducted validation tests on its absorption characteristics.

■ Absorption Comparison Test Overview and Results
Ten healthy adult volunteers were administered 300mg of magnesium from four types of supplements (trimagnesium phosphate, magnesium citrate, magnesium bisglycinate, and Rice Magnesium), and blood magnesium concentrations were measured over time. Rice Magnesium showed unique sustained absorption characteristics, transitioning gradually into the bloodstream and maintaining high blood concentration levels for several hours, differing from other materials.

■ Future Outlook
The findings confirm that the feature of 'gradual absorption and sustained work' establishes a unique position for Rice Magnesium as a new option for magnesium. Having already been adopted for magnesium fortification in vegetable juices and supplements for pregnancy, future applications are expected in areas such as sleep quality improvement, muscle fatigue countermeasure for long-duration sports, and gentle constipation relief.