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多指标评价不同干燥工艺及切片对三叶青质量的影响
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| 篇名： | 多指标评价不同干燥工艺及切片对三叶青质量的影响 |
| TITLE： | |
| 摘要： | 目的：研究不同干燥工艺和切片对三叶青质量的影响，优选三叶青的干燥处理方式。方法：分别采用2种处理方式（切片、不切片）及5种干燥方法（阴干、晒干、热风干燥、微波干燥、冷冻干燥）对三叶青块根进行处理，分别干燥3.5 h～213.0 h后，以药材中总黄酮、多糖、总多酚和β-谷甾醇的含量为指标，对比分析不同干燥工艺对三叶青质量的影响。结果：与不切片比较，三叶青切片后可缩短干燥时间，减少药材中活性成分的损耗。5种干燥方法中，冷冻干燥对三叶青中活性成分保留效果最好，切片干燥后药材中总黄酮、多糖、总多酚和β-谷甾醇的含量分别约为18.5、92.7、9.19、0.344 mg/g；微波干燥次之，随后依次为热风干燥、阴干和晒干。各干燥方法间有效成分含量差异有统计学意义（P＜0.05或P＜0.01）。结论：不同干燥工艺对三叶青质量有明显影响；从成本、有效成分含量及实用性等综合分析，三叶青宜采用切片后在60 ℃热风干燥的方式处理。 |
| ABSTRACT： | OBJECTIVE： To study the effects of different drying technologies and slicing on the quality of Tetrastigma hemsleyanum， and optimize the drying methods for T. hemsleyanum. METHODS： 2 treatment methods （slicing and no slicing） and 5 drying methods （drying in the shade， drying in the sunlight， hot-air drying， microwave drying and freeze drying） were respectively adopted for the T. hemsleyanum root. After drying for 3.5-213.0 h， using the total flavonoids， total polyphenols， polysaccharides and β-sitosterol as indexes， effects of different drying technologies on the quality of T. hemsleyanum were comparatively analyzed. RESULTS： Compared with no slicing， sliced T. hemsleyanum can shorten the drying time and reduce the loss of active ingredients. In the 5 drying methods， freeze drying was the best for keeping the active ingredients in T. hemsleyanum. After drying， the contents of total flavonoids， polysaccharides， total polyphenols and β-sitosterol were 18.5 mg/g， 92.7 mg/g， 9.19 mg/g and 0.344 mg/g respectively， followed by microwave drying， hot-air drying， drying in the shade and drying in the sunlight. The contents of active ingredients had statistical significance by each drying methods （P＜0.05 or P＜0.01）. CONCLUSIONS： Different drying technologies have obvious effects on the quality of T. hemsleyanum. Slicing and hot-air drying at 60 ℃ were suggested as suitable method for T. hemsleyanum in terms of cost， content of active ingredients and practicability. |
| 期刊： | 2017年第28卷第31期 |
| 作者： | 陈翔，郭海波，刘婷，许景景，郑国平 |
| AUTHORS： | CHEN Xiang，GUO Haibo，LIU Ting，XU Jingjing，ZHENG Guoping |
| 关键字： | 三叶青；干燥工艺；热风干燥；总黄酮；总多酚；多糖；β-谷甾醇 |
| KEYWORDS： | Tetrastigma hemsleyanum； Drying technology； Hot-air drying； Total flavonoids； Total polyphenols； Polysaccharides； β-sitosterol |
| 阅读数： | 546 次 |
| 本月下载数： | 5 次 |
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