本文選題：花椒 + 紅外光譜�。� 參考：《食品與機(jī)械》2017年03期

【摘要】：為探索建立一種有效鑒別花椒產(chǎn)地的方法,以17份不同產(chǎn)地花椒為原料,采用傅里葉變換紅外光譜技術(shù)結(jié)合雙指標(biāo)分析法和聚類(lèi)分析法研究不同產(chǎn)地花椒之間親緣遠(yuǎn)近關(guān)系,并對(duì)花椒紅外二階導(dǎo)數(shù)光譜圖進(jìn)行分析比較,研究花椒所含特征物質(zhì)與產(chǎn)地之間的關(guān)系。結(jié)果表明,不同產(chǎn)地花椒紅外光譜圖頻率分布基本一致,但在3 500~2 800cm~(-1)和1 700~1 000cm~(-1)兩個(gè)波段中吸收峰數(shù)目和強(qiáng)度存在差異;應(yīng)用雙指標(biāo)分析法可精確地表示樣品間的親緣關(guān)系;紅外圖譜經(jīng)二階導(dǎo)數(shù)處理,將特征峰峰高值導(dǎo)入SPSS 22.0軟件進(jìn)行聚類(lèi)分析,17個(gè)花椒樣品被分為五類(lèi)。試驗(yàn)探索出了一種簡(jiǎn)便、有效的花椒產(chǎn)地鑒別方法。
[Abstract]:In order to establish an effective method to identify the origin of Zanthoxylum bungeanum L., 17 samples of Zanthoxylum bungeanum L. from different areas were used as raw materials. Fourier transform infrared spectroscopy (FTIR) combined with double index analysis and cluster analysis were used to study the relationship between the relatives of Zanthoxylum bungeanum from different areas. The infrared second derivative spectra of Zanthoxylum bungeanum were analyzed and compared to study the relationship between the characteristic substances contained in Zanthoxylum bungeanum and its origin. The results showed that the frequency distribution of infrared spectra of Zanthoxylum bungeanum from different areas was basically the same, but there were differences in the number and intensity of absorption peaks in 2 800 cm ~ (-1) and 1 700 ~ (1 000) cm ~ (-1) bands. The infrared spectra were treated with second derivative, and the peak height was introduced into SPSS22.0 software for cluster analysis. 17 pepper samples were classified into five categories. A simple and effective method to identify the origin of Zanthoxylum bungeanum L.
【作者單位】： 四川農(nóng)業(yè)大學(xué)食品學(xué)院;
【基金】：四川省科技廳應(yīng)用基礎(chǔ)項(xiàng)目(編號(hào):2016JY0118) 國(guó)家林業(yè)局林業(yè)行業(yè)標(biāo)準(zhǔn)項(xiàng)目(編號(hào):2015-LY-184)
【分類(lèi)號(hào)】：O657.33;TS264

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