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CN105866067A - 一种基于近红外光谱技术的茶粕中茶皂素快速测定方法 - Google Patents

一种基于近红外光谱技术的茶粕中茶皂素快速测定方法 Download PDF

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CN105866067A
CN105866067A CN201610427653.7A CN201610427653A CN105866067A CN 105866067 A CN105866067 A CN 105866067A CN 201610427653 A CN201610427653 A CN 201610427653A CN 105866067 A CN105866067 A CN 105866067A
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耿响
江龙发
白凌云
杨伟根
刘秀红
张书敏
祝建新
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Comprehensive Technology Center Jiangxi Entry And Exit Inspection And Quarantin
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/359Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3563Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor

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Abstract

本发明涉及一种基于近红外光谱技术的茶粕中茶皂素快速测定方法,包括以下步骤:1)样品处理;2)获取茶粕样品近红外光谱数据:将步骤1)处理后的茶粕样品放入近红外光谱仪,通过透漫反射方式扫描样品的近红外光谱;3)建立近红外分析模型:利用化学计量学方法,将茶粕样品的近红外光谱数据结合经典方法测得的茶皂素含量建立近红外分析模型;4)茶皂素含量测定:将步骤3)得到的近红外分析模型数据导入近红外光谱仪,同时将步骤1)处理后的茶粕样品放入近红外光谱仪,从而得出待测茶粕样品的茶皂素含量。本发明的基于近红外光谱技术的茶粕中茶皂素快速测定方法步骤简单,采用近红外光谱仪快速测定茶粕中茶皂素含量,不使用有毒有害试剂。

Description

一种基于近红外光谱技术的茶粕中茶皂素快速测定方法
技术领域
本发明涉及一种基于近红外光谱技术的茶粕中茶皂素快速测定方法。
背景技术
茶粕,又称茶籽饼,别名茶麸、茶枯,茶籽饼,呈紫褐色颗粒,是野山茶油果实榨油后剩下的渣。茶粕广泛应用于鱼塘清塘、稻田、高档草坪杀虫以及蚯蚓、地老虎和其它害虫的防治。茶粕作为一种绿色药物,它能自行分解,无毒性残存,对人体无影响,使用安全;不杀死水草,对水草还有促长效果;对虾、蟹幼体无副作用,提高了繁育虾苗和培育幼蟹的出塘率。茶皂素又称茶皂甙,是从山茶科植物的种子中提取的一种糖式化合物,它属皂素类,是由配基、糖体和有机酸三部分组成的一类五环三萜类化合物,产品一般为白色或淡黄色的微细粉末或褐色液体。已有对茶粕中茶皂素的测定均是采用化学方法,对茶粕中提取茶皂素耗时长、且使用有毒有害试剂。
发明内容
为解决上述技术问题,本发明提供一种基于近红外光谱技术的茶粕中茶皂素快速测定方法。
本发明的基于近红外光谱技术的茶粕中茶皂素快速测定方法,包括以下步骤:
1)样品处理:将茶粕样品采用粉碎机粉碎至粉末状;
2)获取茶粕样品近红外光谱数据:将步骤1)处理后的茶粕样品放入近红外光谱仪,通过透漫反射方式扫描样品的近红外光谱,对样品光谱采集时的最佳扫描参数进行优选,包括扫描分辨率、扫描次数和样品采集次数以及样品厚度;
3)建立近红外分析模型:利用化学计量学方法,将茶粕样品的近红外光谱数据结合经典方法测得的茶皂素含量建立近红外分析模型;
4)茶皂素含量测定:将步骤3)得到的近红外分析模型数据导入近红外光谱仪,同时将步骤1)处理后的茶粕样品放入近红外光谱仪,从而得出待测茶粕样品的茶皂素含量。
与现有技术相比本发明的有益效果为:本发明的基于近红外光谱技术的茶粕中茶皂素快速测定方法步骤简单,采用近红外光谱仪快速测定茶粕中茶皂素含量,不使用有毒有害试剂,操作简单。
具体实施方式
下面结合实施例,对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明,但不用来限制本发明的范围。
一种基于近红外光谱技术的茶粕中茶皂素快速测定方法,包括以下步骤:
1)样品处理:将茶粕样品采用粉碎机粉碎至粉末状;
2)获取茶粕样品近红外光谱数据:将步骤1)处理后的茶粕样品放入近红外光谱仪,通过透漫反射方式扫描样品的近红外光谱,对样品光谱采集时的最佳扫描参数进行优选,包括扫描分辨率、扫描次数和样品采集次数以及样品厚度;
3)建立近红外分析模型:利用化学计量学方法,将茶粕样品的近红外光谱数据结合经典方法测得的茶皂素含量建立近红外分析模型;
4)茶皂素含量测定:将步骤3)得到的近红外分析模型数据导入近红外光谱仪,同时将步骤1)处理后的茶粕样品放入近红外光谱仪,从而得出待测茶粕样品的茶皂素含量。
本发明基于近红外光谱技术的茶粕中茶皂素快速测定方法的检测原理为:茶粕的近红外光谱数据反映茶粕吸收近红外光后,茶皂素分子中的C-H、O-H、C-O等化学键的泛频振动或转动,体现了茶皂素对近红外光的吸收特性;利用化学计量学方法,建立茶粕中茶皂素含量的传统方法测定结果与其近红外光谱数据间的定标模型,从而通过该定标模型,测试茶皂素的含量。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和变型,这些改进和变型也应视为本发明的保护范围。

Claims (1)

1.一种基于近红外光谱技术的茶粕中茶皂素快速测定方法,其特征在于,包括以下步骤:
1)样品处理:将茶粕样品采用粉碎机粉碎至粉末状;
2)获取茶粕样品近红外光谱数据:将步骤1)处理后的茶粕样品放入近红外光谱仪,通过透漫反射方式扫描样品的近红外光谱,对样品光谱采集时的最佳扫描参数进行优选,包括扫描分辨率、扫描次数和样品采集次数以及样品厚度;
3)建立近红外分析模型:利用化学计量学方法,将茶粕样品的近红外光谱数据结合经典方法测得的茶皂素含量建立近红外分析模型;
4)茶皂素含量测定:将步骤3)得到的近红外分析模型数据导入近红外光谱仪,同时将步骤1)处理后的茶粕样品放入近红外光谱仪,从而得出待测茶粕样品的茶皂素含量。
CN201610427653.7A 2016-06-16 2016-06-16 一种基于近红外光谱技术的茶粕中茶皂素快速测定方法 Pending CN105866067A (zh)

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* Cited by examiner, † Cited by third party
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CN107655849A (zh) * 2017-11-08 2018-02-02 广州中大南沙科技创新产业园有限公司 一种凉茶近红外在线检测方法

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