萌芽黑青稞喷干粉的制备工艺优化  

Optimization of Preparation Processes of Germinated Black Hulless Barley Spray-dried Powder

作　　者：王彤辉 相堂永 徐姗 顾依 任舒静 江勇 杨帆 陈志鹏[1,2,4] WANG Tong-hui;XIANG Tang-yong;XU Shan;GU Yi;REN Shu-jing;JIANG Yong;YANG Fan;CHEN Zhi-peng(School of Pharmacy,Nanjing University of Chinese Medicine,Nanjing 210023,Jiangsu,China;Jiangsu Key Laboratory of Chinese Medicine Processing,Nanjing 210023,Jiangsu,China;Hospital of Nanjing University of Science&Technology,Nanjing 210014,Jiangsu,China;Engineering Center of State Ministry of Education for Standardization of Chinese Medicine Processing,Nanjing 210023,Jiangsu,China)

机构地区：[1]南京中医药大学药学院,江苏南京210023 [2]江苏省中药炮制重点实验室,江苏南京210023 [3]南京理工大学医院,江苏南京210014 [4]国家教育部中药炮制规范化及标准化工程研究中心,江苏南京210023

出　　处：《食品研究与开发》2022年第10期156-165,共10页Food Research and Development

摘　　要：为进一步富集萌芽黑青稞的活性成分并提高其经济价值,采用热提取、低温除杂、喷雾干燥制备萌芽黑青稞喷干粉。以萌芽黑青稞粗提物得率,以及总多糖、总酚酸、γ-氨基丁酸含量考察液料比、提取温度、提取时间和提取次数对粗提物制备工艺的影响,并采用正交试验法进一步优化粗提物制备工艺。结果表明,最佳粗提物制备工艺条件为液料比10∶1(mL/g)、提取温度95℃、提取时间2.0 h、提取次数3次,在此条件下,萌芽黑青稞粉粗提物得率、总多糖、总酚酸、γ-氨基丁酸含量分别为15700、327.96、4908.42、199.66 mg/100 g。通过考察低温除杂、喷雾干燥的试验条件优化精制工艺和干燥工艺,最佳精制工艺条件为冷冻时间6 h,解冻温度70℃;最佳干燥工艺条件为进风温度160℃,雾化频率100 Hz,雾化气流量610 L/h,蠕动泵流速3.0 mL/min,料液浓度0.50 g/mL~0.75 g/mL。此方法制备的喷干粉粉质细腻、复溶效果好,复溶溶液无杂质、无沉淀。This paper aims to prepare the germinated black hulless barley powder by hot extraction,low-temperature purification,and spray drying,which is expected to enrich the active components and improve the economic value of germinated black hulless barley.To be specific,the effects of liquid-to-material ratio,temperature,extraction duration,and extraction times on the preparation process of crude extract were investigated with the following indexes:yield of crude extract,content of total polysaccharides,total phenolic acids,andγ-aminobutyric acid.The preparation process of crude extract was further optimized by orthogonal test.The results showed that the optimal preparation process of crude extract conditions were as follows:liquid-to-material ratio of 10∶1(mL/g),95℃,extraction 3 times,with 2.0 h each time.Under the optimal conditions,the yield of crude extract and the content of total polysaccharides,total phenolic acids,andγ-aminobutyric acid were 15700,327.96,4908.42,and 199.66 mg/100 g,respectively.The purification process and drying process were also optimized.The results demonstrated that the optimal purification conditions were freezing for 6 h and thawing at 70℃and that the optimal drying conditions were inlet air temperature of 160℃,atomization frequency of 100 Hz,atomization gas flow rate of 610 L/h,peristaltic pump flow rate of 3.0 mL/min,and feed concentration of 0.50 g/mL-0.75 g/mL.With the above optimized processes,the yielded powder was fine and easily dissolved,and the dissolved solution had no impurity or precipitation.

关 键 词：萌芽黑青稞 工艺优化 Γ-氨基丁酸 总酚酸 总多糖 喷干粉 

分 类 号：TS205[轻工技术与工程—食品科学]