Journal
JOURNAL OF NATURAL MEDICINES
Volume 77, Issue 1, Pages 230-237Publisher
SPRINGER JAPAN KK
DOI: 10.1007/s11418-022-01661-y
Keywords
Clarified butter; Ghee; Maillard reaction; Melanoidin; Anti-oxidation; Quality control
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This study focused on the progress of the Maillard reaction and free radical scavenging activity during ghee preparation, and found that the Maillard reaction progress was enhanced at medium and high temperatures, correlating with the free radical scavenging activity of ghee. Additionally, the reheating process did not affect the Maillard reaction progress or the free radical scavenging activity.
In Ayurveda, a traditional Indian medicine system, clarified butter is called ghee and is used for food and medicinal purposes. Since butter is subjected to heat to prepare ghee, the heating process affects the ghee quality, such as oxidation, flavor, nutritional value, and biological activity. Therefore, this study focused on the Maillard reaction progress and free-radical scavenging activity with temperature and time during ghee preparation. First, ghee was prepared at low to high temperatures, and its quality (milk fat content, retinol, alpha-tocopherol, peroxide value, Maillard reaction progress, and free radical scavenging activity) was evaluated. Maillard reaction progress was enhanced at medium and high temperatures (120-160 celcius), and the free radical-scavenging activity of ghee corresponded to the Maillard reaction progress. Since ghee is often reheated during use, we further evaluated the effect of the reheating process. The reheating process did not alter the Maillard reaction progress or the free radical scavenging activity. Our findings serve as good quality control measures for ghee preparation.
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