Abstract: Herbal tea beverage was developed with Elsholtzia bodinieri Vaniot as raw material, with the most favorable extraction conditions and the optimal formula of herbal tea beverage explored and determined in this study. By L9(34) orthogonal test design method, the most favorable technical parameters for essence oil extraction were determined with extraction rate as the index and the optimal formula of the herbal tea beverage was determined with sensory score as the index. The results showed that the most favorable extraction conditions of E. bodinieri essence oil were: solid-liquid ratio of 1∶16 g/mL, soaking time for 2 h, distillation for 8 h, and aromatic water flow rate of 0.7 mL/min for an extraction rate of 0.60%; while the optimal formula of the herbal tea beverage was: sugar 55 g/L, E. bodinieri juice 15 g/L, citric acid 3 g/L, essence oil 5 g/L. The best stability was achieved with 0.4 g/L xanthan gum and 0.8 g/L CMC-Na used as stabilizers, when the precipitation rate was 6.3%. Such herbal tea beverage featured soluble solids content above 5.6%, total acid (in citric acid) of 0.28 g/kg and compliance in microbial indicators. These results would provide a theoretical basis for research on E. bodinieri oil, as well as a reference for product development based on E. bodinieri.
詹永,樊保敏,廖霞,等. 凤尾茶精油提取工艺及凉茶饮料配方的优化[J]. 食品与发酵工业, 2019, 45(24): 196-201.
ZHAN Yong,FAN Baomin,LIAO Xia,et al. Orthogonal test design for optimization of extraction process of Elsholtzia bodinieri Vaniot oil and formula of herbal tea beverage[J]. Food and Fermentation Industries, 2019, 45(24): 196-201.