玉米直链回生淀粉吸附含羟基红曲红色素的动力学
为了提高玉米回生淀粉通过吸附分离含羟基红曲红色素的效率,深入了解玉米直链回生淀粉吸附含羟基红曲红色素的机理,该文通过回生法制备分子量分布范围分别为267-4.6×10-7、589-9.7×10-4、565-6.2×10-4、794-6.0×10-4 g/mol的玉米直链淀粉,进而利用这些淀粉吸附红曲红色素,研究不同淀粉在20、40、80℃温度下对红曲红色素的吸附量和吸附速度,采用Dubinin-Radushkevich等温吸附方程研究玉米直链回生淀粉吸附含羟基红曲红色素的动力学规律。结果表明,回生1-4次玉米直链回生淀粉在80℃、140 h吸附红曲红色素量最多,吸附量分别达到0.56、0.84...
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| Published in | 农业工程学报 Vol. 32; no. 2; pp. 294 - 299 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
天津商业大学天津市食品生物技术重点实验室,生物技术与食品科学学院,天津 300134%天津商业大学理学院化学系,天津,300134
2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1002-6819 |
| DOI | 10.11975/j.issn.1002-6819.2016.02.042 |
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| Summary: | 为了提高玉米回生淀粉通过吸附分离含羟基红曲红色素的效率,深入了解玉米直链回生淀粉吸附含羟基红曲红色素的机理,该文通过回生法制备分子量分布范围分别为267-4.6×10-7、589-9.7×10-4、565-6.2×10-4、794-6.0×10-4 g/mol的玉米直链淀粉,进而利用这些淀粉吸附红曲红色素,研究不同淀粉在20、40、80℃温度下对红曲红色素的吸附量和吸附速度,采用Dubinin-Radushkevich等温吸附方程研究玉米直链回生淀粉吸附含羟基红曲红色素的动力学规律。结果表明,回生1-4次玉米直链回生淀粉在80℃、140 h吸附红曲红色素量最多,吸附量分别达到0.56、0.84、1.04、1.10 mg/g,直链回生淀粉分子量分布范围越窄,吸附温度越高,吸附速度越快。经Dubinin-Radushkevich等温吸附方程式计算所有样品平均吸附自由能低于8 J/g,玉米直链回生淀粉吸附红曲红色素方式为物理吸附。电子显微镜图结果表明,吸附红曲红色素的玉米直链淀粉干燥后结构更加蓬松。研究结果为玉米直链回生淀粉分离、纯化含羟基红曲红色素工艺条件的设计和探索提供理论参考。 |
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| Bibliography: | 11-2047/S Lin Xuhui,Dong Shirui,Guo Junjie,Lian Xijun (1. Tianjin Key Laboratory of Food Biotechnology, Department of Biological Technology and Food Science, Tianjin University of Commerce, Tianjin 300134, China; 2. School of Science, Tianjin University of Commerce, Tianjin 300134, China) starch; absorption; kinetics; monascus red pigments Retrograded corn amylose is a kind of resistant starch which is formed by the interaction of amyloses through hydrogen bonds. Those bonds hinder the combination of starch and water/amylase, which makes retrograded amylose insoluble and resists amylase hydrolysis. Some of retrograded corn amyloses can form regular crystal with identical characteristic named B-type structure. Such crystal structure provides possibility to absorb organic compounds containing hydroxyls. There are residual carbohydrates, amino acids, water soluble protein and peptides and so on in fermentation broth in the production of monascus red pigments by fermentation liquid method. It is difficult to isolate |
| ISSN: | 1002-6819 |
| DOI: | 10.11975/j.issn.1002-6819.2016.02.042 |