| 吕尊富,潘超,崔鹏,陈国林,庞林江,陆国权.短期储藏对不同大小甘薯理化特性的影响[J].中国粮油学报,2019,34(6):30-36 |
| 短期储藏对不同大小甘薯理化特性的影响 |
| Effects of short-term storage on physical and chemical characteristics of sweet potato in different sizes |
| 投稿时间：2018-09-05 修订日期：2018-12-25 |
| DOI： |
| 中文关键词: 甘薯 质构 贮藏 色差 食味 食味品质 |
| 英文关键词:Sweet potato Texture Storage Color difference Taste quality |
| 基金项目:1. 国家自然 科学基金（31701322，31671750）。2.国家现代农业产业技术体系建设专项资金资助(CARS-10-B19) 。 3. 浙江省农业（粮食）新品种选育重大科技 专项（ 2016C02050-7-5）。 |
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| 中文摘要: |
| 甘薯储藏过程中理化特性的变化对甘薯的食味品质有着重要影响。本研究选用心香和紫罗兰两个甘薯品种，每个品种分别称出的50 g、100 g和200 g的三种薯块，将其贮藏于25±2℃、空气相对湿度为80-85%的贮藏间内，分析不同等级甘薯块根理化特性随时间的变化规律，研究发现，随着储藏时间的增加，样品的亮度值（L值）和色差（△E）都呈先下降，心香60 d后略微升高。不同等级的薯块的硬度、粘度、咀嚼性等指标总体呈下降趋势，尤其是在60 d以后呈显著下降趋势，不同等级甘薯块根的质构特性均存在明显差异。随着储藏时间的增加，甘薯淀粉、蛋白质含量均呈下降趋势，可溶性糖含量呈先降低后升高的趋势。综合分析发现，甘薯的食味品质均在室内储藏60天前达到最大值， 60 d后，块根理化特征劣变显著，上述结果为甘薯的短期储藏提供理论指导。 |
| 英文摘要: |
| The change of physical properties during storage of sweet potato has important influence on the taste quality of sweet potato. Two sweet potato varieties, Xinxiang and Violet, were selected in this study. Three kinds of sweet potato pieces for each variety, 50 g, 100 g and 200 g, were stored in a storage room with the temperature of 25±2℃ and relative humidity of 80-85%. The changes of physical properties of sweet potato roots were analyzed with time. It was found that the luminance value (L value) and chromatic aberration (△E) of the samples decreased firstly with the increase of storage time, and then increased slightly after 60 days. The hardness, adhesiveness and chewiness index of potato roots showed a downward trend, especially after 60 days. With the increase of storage time, starch and protein content decreased, while and soluble sugar content decreased first and then increased. The overall results showed that the eating quality of sweet potato reached the maximum value before 60 days indoor storage. However, sweet potato roots deteriorated significantly after 60 days indoor storage. Above results provided a theoretical guidance for short-term storage of sweet potato. |
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