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食品研究与开发:2023,44(18):158-164
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碱法提取普洱茶渣膳食纤维的工艺优化
(1. 天津科技大学 生物工程学院省部共建食品营养与安全国家重点实验室,天津 300457;2. 天士力医药集团股份有限公司 创新中药关键技术国家重点实验室,天津 300410)
Optimization of Alkaline Extraction of Dietary Fiber from Pu-erh Tea Residue
(1. State Key Laboratory of Food Nutrition and Safety,College of Biotechnology,Tianjin University of Science &Technology,Tianjin 300457,China;2. State Key Laboratory of Innovative Chinese Medicine,Tasly Pharmaceutical Group Co.,Ltd.,Tianjin 300410,China)
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投稿时间:2022-12-07    
中文摘要: 以普洱茶渣为原料,通过碱法提取茶渣中膳食纤维,研究影响因素(碱液浓度、碱解温度、碱解时间和料液比)对普洱茶渣中膳食纤维得率的影响。结合单因素和响应面试验得到最优提取工艺参数为碱液浓度3.35%、碱解温度100 ℃、碱解时间2.36 h、料液比1∶28(g/mL)。在该条件下,普洱茶渣中膳食纤维的得率为82.26%,较提取前极显著提高(P<0.001)。提取后的茶渣膳食纤维中纤维素、半纤维素、木质素和果胶的含量分别为52.10%、14.20%、15.30%和5.00%,以不溶性纤维为主。
中文关键词: 茶渣  普洱茶  膳食纤维  碱法  响应面  提取工艺
Abstract:Dietary fiber was extracted from Pu-erh tea residue by alkaline method. The factors(alkali concentration,alkaline extraction temperature,extraction time,and solid-to-liquid ratio)influencing the dietary fiber yield were studied. The extraction conditions were optimized by single factor test and response surface methodology as extraction with 3.35% alkali and the solid-to-liquid ratio of 1∶28(g/mL)at 100 ℃for 2.36 h. Under these conditions,the yield of dietary fiber from Pu-erh tea residue was 82.26%,which was significantly higher than that before extraction (P<0.001). The content of cellulose,hemicellulose,lignin,and pectin in dietary fiber from the tea residue was 52.10%,14.20%,15.30% and 5.00%,respectively,and insoluble fiber was the main fiber component.
文章编号:202318021     中图分类号:    文献标志码:
基金项目:天津市研究生科研创新项目(2022SKYZ113)
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