利用共振拉曼成像技术分析胡萝卜与南瓜中的β-胡萝卜素含量分布  

Analysis ofβ-carotene content in carrot and pumpkin byresonance Raman mapping

作　　者：申朝婷 刘赛余 张宇轩 吴楠楠 欧阳顺利 SHEN Zhao-ting;LIU Sai-yu;ZHANG Yu-xuan;WU Nan-nan;OUYANG Shun-li(Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources,Inner Mongolia University of Science&Technology,Baotou,Inner Mongolia 014010,China;College of Science,Inner Mongolia University of Science&Technology,Baotou,Inner Mongolia 014010,China;College of Chemistry and Chemical Engineering,Inner Mongolia University of Science&Technology,Baotou Inner Mongolia 014010,China)

机构地区：[1]内蒙古科技大学理学院,内蒙古包头014010 [2]内蒙古科技大学化学与化工学院,内蒙古包头014010 [3]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《大学物理》2022年第7期82-85,共4页College Physics

基　　金：国家自然科学基金(21864019);内蒙古自治区重大基础研究开放课题资助(0406091701);内蒙古科技大学创新基金-优秀青年基金项目(2019YQL06);内蒙古自治区自然科学基金(2018LH02004)资助。

摘　　要：β-胡萝卜素有很高的药理学及营养学价值,探究它在瓜果蔬菜中的分布是一个有趣且重要的科学问题。本文利用拉曼光谱成像技术检测胡萝卜和南瓜中β-胡萝卜素的含量分布,发现胡萝卜素皮层β-胡萝卜素的特征拉曼峰强度较根芯处高;南瓜表皮层β-胡萝卜素的特征拉曼峰强度也较果肉处高.这个结果深化了果蔬皮下更具营养的朴素观念,也展示了一种确定β-胡萝卜素在果蔬中含量分布的实验方法.Carrots and Pumpkin contain a large number ofβ-carotene,have a high pharmacological and nutritional value.Becauseβ-carotene contains a large number of delocalized electrons and has photoelectric characteristics,a laser with excitation wavelength of 532 nm can produce resonance Raman effect in the absorption spectrum ofβ-carotene in Raman scattering.The Raman spectra of carrot and Pumpkin are measured and the image of Raman is made.It is found that the intensity of characteristic Raman peaks ofβ-carotene in carrot epidermis is higher than that in root core,the intensity of characteristic Raman peaks in theβ-carotene of Pumpkin skin is also higher than that in the pulp.This study provides a new method to measure the content ofβ-carotene by using Raman mapping technique.

关 键 词：共振拉曼光谱 Β-胡萝卜素 拉曼成像 

分 类 号：O657.3[理学—分析化学]