胡伯凯^1，2，3，税会霞⁴，张东亚^5*，李学琴⁴

（1.贵州省核桃研究所，贵阳 550005；2.贵州省林业科学研究院，贵阳 550005；3.贵州省核桃工程技术研究中心，贵阳550005；4.贵阳信息科技学院，贵阳 550005；5.贵州轻工职业技术学院，贵阳 550005）

摘要：为确定低场核磁共振技术是否能用于山桐子含油率的快速检测，达到准确高效、节约检测成本的目的。通过对比低场核磁共振检测法与索氏抽提法在测定山桐子含油率的差异，并考察低场核磁共振检测法的精密度和稳定性。结果表明，低场核磁共振检测法定标曲线的拟合相关系数大于0.9999，两种检测方法测定结果的绝对偏差范围在0.04%～1.40%之间，相对偏差范围在0.15%～9.86%之间，低场核磁共振检测法的精密度和稳定性良好。低场核磁共振技术可应用于山桐子含油率的检测，具有准确、快速、高效的特点。

关键词：山桐子；低场核磁共振技术；索氏抽提法；含油率；快速检测

中图分类号：TS207.3 文献标识码：A 文章编号：1674-506X（2024）04-0119-0005

Rapid Detection of Oil Content in Idesia polycarpa Based on Low Field Nuclear Magnetic Resonance

HU Bokai^1，2，3，SHUI Huixia⁴，ZHANG Dongya^5*，LI Xueqin⁴

（1.Guizhou Institute of Walnut，Guiyang 550005，China；2.Guizhou Academy of Forestry，Guiyang 550005，China；3.Guizhou Walnut Engineering Technology Research Center，Guiyang 550005，China；4.Guiyang Institute of Information Science and Technology，Guiyang 550005，China；5.Guizhou Institute of Light Industry，Guiyang 550005，China）

Abstract：In order to determine the feasibility of using low-field nuclear magnetic resonance (NMR) technology for the rapid detection of oil content in Idesia polycarpa seeds， with the aim of achieving accurate and efficient results while reducing costs. The results obtained from the low-field NMR detection method were analyzed and compared with those of the soxhlet extraction method for determining the oil content in Idesia polycarpa seeds. The precision and stability of the low-field NMR detection method were also evaluated. The results indicated that the fitting correlation coefficient of the calibration curve for low-field nuclear magnetic resonance detection is greater than 0.999 9， and the absolute deviation range of the results of the two detection methods was between 0.04% and 1.40%， and the relative deviation range was between 0.15% and 9.86%. Therefore， this method exhibits good precision and stability. In conclusion， low-field NMR technology can be effectively applied in the detection of oil content in Idesia polycarpa seeds， offering the advantages of accuracy， speed， and efficiency.

Keywords：Idesia polycarpa；low field nuclear magnetic resonance technology；soxhlet method；oil content；quick detection

doi：10.3969/j.issn.1674-506X.2024.04-020

收稿日期：2024-01-17 

基金项目：贵州省林业科研项目（黔林科合J字［2024］09号）；贵州省科技计划定向重点项目（黔科合支撑［2022］重点014号）；贵州省科技重大专项（黔科合重大专项字［2019］3006）；贵州省林业科研项目（黔林科合［2020］10号）

作者简介：胡伯凯（1990-），男，硕士，助理研究员。研究方向：木本油料资源利用与开发。

*通信作者：张东亚（1994-），女，硕士，工程师。研究方向：经济林资源利用与开发。

引用格式：胡伯凯，税会霞，张东亚，等.基于低场核磁共振技术快速检测山桐子含油率的研究［J］.食品与发酵科技，2024，60（4）：119-123.