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| Optimization of ultrasound-assisted extraction of phytic acid from sesame meal and its antioxidant activity |
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| DOI：10.12166/j.zgyz.1003-7969/2020.08.023 |
| KeyWord:sesame meal phytic acid ultrasound extraction antioxidant activity |
| FundProject:安徽省大学生创新项目（201710363185；201810 363192）；安徽省高校自然基金提升计划（TSKJ2017B17） |
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| Abstract: |
| In order to determine the optimal conditions for ultrasound-assisted acetic acid extraction of phytic acid from sesame meal, the extraction conditions were optimized by single factor experiment and response surface methodology, and the antioxidant activity of phytic acid from sesame meal was analyzed. The results showed that the optimal extraction conditions of phytic acid from sesame meal were obtained as follows: ultrasonic power 270 W, ultrasonic time 20 min, mass fraction of acetic acid 15%, ratio of material to liquid 1∶ 16, extraction time 115 min and extraction temperature 51 ℃. Under these conditions, the extraction rate of phytic acid was 73.24%. In vitro antioxidant experiments showed that phytic acid from sesame meal had certain antioxidant activity. The optimal mass concentrations of phytic acid for reducing power, DPPH radical scavenging rate and hydroxyl radical scavenging rate were 80, 100 μg/mL and 120 μg/mL respectively. |
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