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Effects of Cumin and Ginger as Antioxidants on Dough Mixing Properties and Cookie Quality

¹Graduate researcher, professor, and visiting professor, respectively. The State Key Laboratory of Food Science and Technology, International Exchange and Cooperation Program, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214036, China. ²Corresponding author. Phone: +86-510-8591 9139. Fax: +86-510-8591 9139. E-mail: wnhuang@jiangnan.edu.cn ³Research scientist, China Food Industry Group, Nanjing, Jiangsu 210041, China.

The effects of cumin and ginger as antioxidants on dough mixing properties and cookie quality were evaluated. Antioxidant activities in cookies were estimated by total phenolic compounds (TPC) contents and free radical scavenging activities. The cookie dough development was evaluated using Mixolab equipment which showed that addition of cumin did not change dough stability and C2, but decreased C3 and C4. While the addition of 5% ginger decreased dough stability (from 8.4 in the control sample to 6.7 min with 5% ginger addition), C2 (from 0.49 in the control sample to 0.31 N·m with 5% ginger addition), C3, and C4. Cookies formulated with addition of cumin and ginger had increased spread ratios, were softer, and had lower L* and b* values (were darker) than the control. Sensory analysis showed that cookies with cumin and ginger additions had overall acceptability similar to that of the the control with a slightly darker appearance, as confirmed by color determination. Using cumin and ginger significantly increased TPC contents from 78.5 in the control to 93.0 and 109.8 mg of gallic acid equivalent/100 g, respectively. Similar results were observed in the antioxidant activity measured by 1,1-diphenyl-2-picrylhydrazyl (DPPH), which increased from 41.0% in the control to 51.5% and 64.6%, respectively, for cookies with 5% addition of cumin and ginger.