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| Antioxidant interaction of compound rosemary extract in plant-based emollient oils |
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Received:June 26, 2025 Revised:January 22, 2026 Accepted:August 11, 2025
Published：July 20, 2026
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| DOI：10.19902/j.cnki.zgyz.1003-7969.250300 |
| KeyWord:rosemary extract synergistic antioxidation plant-based emollient oil Isobologram analysis |
| FundProject: |
| Author Name | Affiliation | | FAN Fan1, DONG Xu1, LI Yuanyuan1, CHEN Yingying1,
CAI Guoqiang1,2, HE Yibo1,2 | 1.NICE（Zhejiang）Technology Group Co. , Ltd. , Hangzhou 310051, China
2.NICE Plant-Based New
Materials and Ecological Products Key Enterprise Research Institute of Zhejiang Province,
Lishui 323000, Zhejiang, China |
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| Abstract: |
| Aimed at providing a reference for the development and system protection of plant-based emollient oils and the application of rosemary extract, binary combinations of rosemary extract with tocopherol, pentaerythrityl tetrakis\[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate\] (TT), and dimethylmethoxychromanol (DMC) were prepared at different mass ratios. The antioxidant effects of these binary antioxidant combinations on plant-based emollient oils were investigated. Firstly, the DPPH radical scavenging capacity of single antioxidants and their binary combinations was measured. Based on this, the antioxidant interaction (synergistic, additive, or antagonistic) of the binary combinations was determined using Isobologram analysis. Subsequently, the changes in peroxide value, acid value, and DPPH radical scavenging rate of the plant-based emollient oils supplemented with the binary antioxidant combinations were measured through the Schaal oven accelerated oxidation test to validate the interaction conclusions and evaluate the practical protection efficacy.The results showed that rosemary extract combined with tocopherol at mass ratios of 1∶ 1.5, 1∶ 1, and 1.5∶ 1, and with DMC at mass ratio of 1∶ 1.5, exhibited synergistic effects. The strongest synergistic effect was observed for the rosemary extract-tocopherol combination at mass ratio of 1∶ 1.5. Combinations of rosemary extract with DMC at mass ratios of 1∶ 1 and 1.5∶ 1 showed additive effects, while all combinations with TT exhibited antagonistic effects.The results of the Schaal accelerated oxidation test for the plant-based emollient oils validated the effectiveness of the interaction conclusions and identified the optimal combination as rosemary extract-tocopherol (1∶ 1.5). In conclusion, rosemary extract and tocopherol, when combined at specific ratios, can exert a synergistic antioxidant effect on plant-based emollient oils. |
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