不同浸提、干燥方式对GABA速溶红茶中GABA含量的影响 |
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引用本文: | 李赟,赵文芳,马忠华,葛亚中,黄亚辉. 不同浸提、干燥方式对GABA速溶红茶中GABA含量的影响[J]. 中国农学通报, 2015, 31(9): 261-266. DOI: 10.11924/j.issn.1000-6850.2014-2608 |
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作者姓名: | 李赟 赵文芳 马忠华 葛亚中 黄亚辉 |
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作者单位: | 无限极(中国)有限公司,华南农业大学,无限极(中国)有限公司,无限极(中国)有限公司,华南农业大学 |
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基金项目: | 无限极(中国)有限公司合作项目“高γ-氨基丁酸(GABA)茶制品开发项目”(HPG/2013/08/1010) |
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摘 要: | 为了研究不同浸提、干燥等工艺条件对优化GABA速溶红茶制备的问题,以‘金萱’品种的GABA红茶为原料,蒸馏水作为提取溶剂,以GABA含量为主要评价指标,采用正交试验优化GABA速溶红茶浸提参数,研究提取温度、提取时间和茶水比对GABA速溶红茶粉中GABA含量等的影响;在确定最佳浸提工艺条件基础上,分析喷雾干燥和冷冻干燥工艺对GABA含量的的影响,并确定制备GABA速溶红茶茶粉的最佳制备工艺条件。结果表明,在GABA速溶红茶浸提过程中,浸提温度对提取效果的影响最大,浸提温度与总固形物提取率具有极显著关系(P<0.01)。经正交试验确定最佳提取工艺条件为:提取温度90℃,提取时间15 min,茶水比1:15,在此最佳浸提工艺条件下,经冷冻干燥后获得GABA含量高达10.11 mg/g的GABA速溶红茶。
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关 键 词: | 衡阳 衡阳 |
收稿时间: | 2014-09-26 |
修稿时间: | 2015-01-22 |
Effects of Optimum Extraction and Drying Process on GABA content of GABA Instant Black Tea |
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Abstract: | To investigate the extracting conditions and drying process on GABA instant tea, taking ‘Jin Xuan’ varieties as raw material to GABA black tea, water as extraction solvent, orthogonal array design was used to optimize the extraction parameters of GABA instant black tea. On the basis of the optimum extraction process conditions, the effects of spray drying and freeze-drying on GABA instant black tea was investigated. Taking GABA content as the main evaluation index, the optimum technological conditions for GABA instant black tea was as followed: 90℃ as extraction temperature,extraction of tea for 15 min, 1 to 15 as ratio of tea to water, freeze-drying. GABA instant black tea with 10.11 mg/g GABA was achieved under this condition. With high yield GABA, this process could be helpful to the efficient producing GABA instant-tea in industry. |
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