为明确油茶籽采后鲜储过程中水分迁移及质构变化情况,本实验以黔产油茶籽为实验原料,运用低场核磁共振(low field nuclear magnetic resonance,LF-NMR)、核磁共振成像(magnetic resonance imaging,MRI)技术探究鲜储过程中水分状态和分...为明确油茶籽采后鲜储过程中水分迁移及质构变化情况,本实验以黔产油茶籽为实验原料,运用低场核磁共振(low field nuclear magnetic resonance,LF-NMR)、核磁共振成像(magnetic resonance imaging,MRI)技术探究鲜储过程中水分状态和分布规律,采用质地剖面分析(texture profile analysis,TPA)监测油茶籽鲜储过程中的质构特性变化,并进行相关性分析。结果表明:油茶籽在储藏期间水分含量不断下降,黔玉1号油茶籽水分含量由33.86%±3.03%(0 d)降至8.64%±0.24%(56 d),湘林210号油茶籽水分含量由53.03%±3.36%(0 d)降至10.73%±0.25%(56 d);种仁水分含量下降速率高于油茶籽;不易流动水在油茶籽中占比最高,储藏56 d时黔玉1号降至62.89%,湘林210号降至60.64%。新鲜油茶籽氢质子密度成像图光亮,随时间延长,局部水分流失较快,图像逐渐接近背景色。储藏期间,油茶籽破裂力、硬度不断下降,种仁破裂力、硬度曲折变化;种仁弹性逐渐丧失;黔玉1号种仁内聚性变化较小,而湘林210号呈先上升后下降趋势。相关性分析表明油茶籽水分含量与水分总峰面积极显著正相关(P<0.01),与破裂力显著正相关(P<0.05);破裂力与硬度极显著正相关(P<0.01)。种仁水分含量与其破裂力、硬度、弹性之间呈极显著相关性(P<0.01)。本研究为油茶鲜果压榨工艺提供基础研究数据。展开更多
Quality evaluation plays a vital role in ensuring safety and effectiveness of Chinese materia medica(CMM). Microscopic and morphological technologies can be used to distinguish CMM's characteristics, such as shape...Quality evaluation plays a vital role in ensuring safety and effectiveness of Chinese materia medica(CMM). Microscopic and morphological technologies can be used to distinguish CMM's characteristics, such as shape, size, texture, section, and smell, for authenticity and quality control of CMM. The microscopic and morphological applications of novel micro-technology, colorimeter, and texture analyzer for CMM identification are summarized and the future prospect is discussed in this paper. Various styles and complex sources of CMM are systemically reviewed, including cormophyte medicinal materials, fruit and seeds, pollen grain, and spore materials.展开更多
基金financially supported by Beijing Nova Program of China(No.xx2016050)Science Fund for Distinguished Young Scholars in BUCM(No.2015-JYB-XYQ-003)
文摘Quality evaluation plays a vital role in ensuring safety and effectiveness of Chinese materia medica(CMM). Microscopic and morphological technologies can be used to distinguish CMM's characteristics, such as shape, size, texture, section, and smell, for authenticity and quality control of CMM. The microscopic and morphological applications of novel micro-technology, colorimeter, and texture analyzer for CMM identification are summarized and the future prospect is discussed in this paper. Various styles and complex sources of CMM are systemically reviewed, including cormophyte medicinal materials, fruit and seeds, pollen grain, and spore materials.
