用光谱技术研究和比较不同茶叶中的营养补充品(元素和化合物)

IF 0.8 4区 综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES
Tejmani Kumar, Abhishek Kumar Rai, Abhishek Dwivedi, Rohit Kumar, Awadhesh Kumar Rai
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引用次数: 2

摘要

对各种茶叶中存在的营养补充剂和掺假/有毒元素进行了定性和定量分析并进行了比较。利用激光诱导击穿(LIB)光谱对茶叶中的无机元素(Ca、K、Na、Mg、Ba、Al、Sr、Mn)和有机元素(C、N、O、H)进行了快速鉴定。金属氧化物(CaO, BaO, SrO和AlO)的电子带也被确定。LIB光谱中CN和C2分子的分子带显示了茶样品中有机化合物的存在。用校准自由(CF-LIBS)技术测定了茶叶样品中各成分的浓度,并与能量色散x射线(EDX)技术测定的结果进行了比较。根据样品中Ba、Al、Sr的含量,讨论了不同茶叶的毒性。定量分析Na、K和Mg可能有助于控制高血压和慢性肾脏疾病。主成分分析(PCA)根据不同样品的元素成分进行分类。在所有茶叶样品中,通过光声光谱(PAS)确定了氨基酸、酶、色素、碳水化合物、咖啡因和尼古丁的存在。此外,利用傅里叶变换红外(FTIR)光谱技术对茶叶的分子带进行了确认。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Investigation and Comparison of Nutritional Supplements (Elements and Compounds) in Various Tea Leaves using Spectroscopic Techniques

Investigation and Comparison of Nutritional Supplements (Elements and Compounds) in Various Tea Leaves using Spectroscopic Techniques

Qualitative and quantitative analyses of nutritional supplements and adulteration/toxic elements present in various tea leaves have been performed and compared. Rapid identification of inorganic (i.e., Ca, K, Na, Mg, Ba, Al, Sr, Mn) and organic (C, N, O, H) elements have been done using laser-induced breakdown (LIB) spectra of tea leaves. The electronic bands of the metal oxides (CaO, BaO, SrO, and AlO) are also identified. Molecular bands of CN and C2 molecules in the LIB spectra show the presence of organic compounds in the tea samples. The concentration of the constituents of the tea samples has been determined using the calibration free (CF-LIBS) technique and results are further compared with results obtained by energy-dispersive X-ray (EDX) technique. The toxicity of the various tea leaves has been discussed based on the contents of Ba, Al, and Sr in each sample. The quantitative analysis of Na, K, and Mg may be helpful to control hypertension and chronic kidney disease. Principal component analysis (PCA) classifies the different samples based on their elemental constituents. In all tea leaves samples, the presence of amino acids, enzymes, pigments, carbohydrates, caffeine and nicotine has been established via photoacoustic spectroscopy (PAS). Further, the confirmation of the molecular bands of the tea leaves is done with (Fourier Transform Infrared) FTIR spectroscopic technique.

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来源期刊
CiteScore
2.60
自引率
0.00%
发文量
37
审稿时长
>12 weeks
期刊介绍: To promote research in all the branches of Science & Technology; and disseminate the knowledge and advancements in Science & Technology
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