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食品研究与开发:2022,43(10):156-165
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萌芽黑青稞喷干粉的制备工艺优化
(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)
Optimization of Preparation Processes of Germinated Black Hulless Barley Spray-dried Powder
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投稿时间:2021-06-24    
中文摘要: 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15 700、327.96、4 908.42、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。
Abstract: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
文章编号:202210021     中图分类号:    文献标志码:
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WANG Tong-hui,XIANG Tang-yong,XU Shan,GU Yi,REN Shu-jing,JIANG Yong,YANG Fan,CHEN Zhi-peng This paper aims to prepare the germinated black hulless barley powder by hot extractionlow-temperature purificationand spray dryingwhich is expected to enrich the active components and improve the economic value of germinated black hulless barley.To be specificthe effects of liquid-to-material ratiotemperatureextraction durationand extraction times on the preparation process of crude extract were investigated with the following indexes:yield of crude extractcontent of total polysaccharidestotal phenolic acidsand γ-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 timeswith 2.0 h each time.Under the optimal conditionsthe yield of crude extract and the content of total polysaccharidestotal phenolic acidsand γ-aminobutyric acid were 15 700327.964 908.42and 199.66 mg/100 grespectively.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 Hzatomization gas flow rate of 610 L/hperistaltic pump flow rate of 3.0 mL/minand feed concentration of 0.50 g/mL-0.75 g/mL.With the above optimized processesthe yielded powder was fine and easily dissolvedand the dissolved solution had no impurity or precipitation. 
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