Comparison of IC۵۰ Antioxidant Analysis of Local Soybean Tempeh and Imported Soybean Tempeh in Indonesia

Background: Antioxidants contain in tempeh are free radical scavengers that can inhibit the process of lipid oxidation and prevent several diseases. Types of tempeh sold in the Indonesian market include local soybean tempeh and imported soybean tempeh. This study aims to compare and analyze the differences in the antioxidant activity of local soybean tempehand imported soybean tempeh.Methods: The research was conducted from June to November ۲۰۲۲ in Yogyakarta, Indonesia. This study used objects in the form of local soybean tempeh and imported soybean tempeh. Tempeh was floured first, then its antioxidant activity was analyzed in the laboratory. Antioxidant activity was defined as the amount of IC۵۰ antioxidant in tempeh flour studied in units of mg/mL, with a ratio scale. IC۵۰ antioxidant analysis used the diphenylpicrylhydrazyl (DPPH) method. The data obtained were compared and analyzed statistically using the Independent t-test.Results: It was shown that the IC۵۰ antioxidant level in both types of tempeh was significantly different (p=۰.۰۰۰۱). The difference in the mean of the two groups showed a higher IC۵۰ antioxidant score in local soybean tempeh of ۹.۹۶ mg/mL.Conclusion: Based on the IC۵۰ antioxidant value, imported soybean tempeh had significantly a higher antioxidant activity than the local soybean tempeh.

کلیدواژه ها:

Antioxidant Activity ، antioxidant IC۵۰ ، imported soybean tempeh ، local soybean tempeh