Investigation of Adulteration of Sugars in Pomegranate Concentrate

G. Kılınç, N. Bağdatlıoğlu
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Abstract

In this study, 58 pomegranate concentrate samples collected directly from the local producers were adulterated with 2 different corn syrup and beet sugar syrup at different rates as 5-50% (w/w). The spectra obtained by FTIR-ATR spectroscopy of authentic and adulterated samples were evaluated by PCA chemometric methods. PCA method was used to distinguish the authentic-adulterated samples, select the spectral region and data reduction. The PCA-loading plot shows the most effective wavenumber to distinguish authentic samples from adulterated ones, which was determined to be in the range of 1200-900 cm-1. In the model created to distinguish the samples; it was found that PC1 and PC2 explained 83.1% of the total variance. Authentic and adulterated samples were successfully distinguished by PCA method. As a result, FTIR spectroscopy combined chemometric methods, can be used as a rapid and eco-friendly as alternative method for detection of in pomegranate concentrate.
石榴浓缩液中糖的掺假研究
在本研究中,直接从当地生产商处采集的58份石榴浓缩液样品中掺入了2种不同的玉米糖浆和甜菜糖浆,掺假率为5-50% (w/w)。用主成分分析方法对正品和掺假样品的FTIR-ATR光谱进行评价。采用主成分分析法对样品进行真伪鉴别、光谱区域选取和数据约简。pca加载图显示了区分正品和掺假样品的最有效波数,确定在1200-900 cm-1范围内。在创建的模型中区分样本;发现PC1和PC2解释了总方差的83.1%。用主成分分析法成功地区分了正品和掺假样品。结果表明,FTIR光谱法与化学计量法相结合,可作为一种快速、环保的检测石榴浓缩液中硫化氢的替代方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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