Minced meat is the major ingredient in sausages, beef burgers, and similar products; and thus it is the main product subjected to adulteration with meat offal. Determination of this kind of meat adulteration is crucial due to religious, economic and ethical concerns. The aim of the present study is to discriminate the beef meat and offal samples by using laser induced breakdown spectroscopy (LIBS). To this end, LIBS and multivariate data analysis were used to discriminate pure beef and offal samples qualitatively and to determine the offal mixture adulteration quantitatively. In this analysis, meat samples were frozen and LIBS analysis were performed. The results indicate that by using principal component analysis (PCA), discrimination of pure offal and offal mixture adulterated beef samples can be achieved successfully. Besides, adulteration ratio can be determined using partial least square analysis method (PLS) with 0.947 coefficient of determination (R²) and 3.8% of limit of detection (LOD) values for offal mixture adulterated beef samples.

肉末是香肠，牛肉汉堡和类似产品中的主要成分；因此，它是掺入肉杂物的主要产品。由于宗教，经济和道德方面的考虑，确定这种肉类掺假至关重要。本研究的目的是通过使用激光诱导击穿光谱法（LIBS）来区分牛肉和内脏样品。为此，LIBS和多元数据分析用于定性区分纯牛肉和内脏样品，并定量确定内脏混合物的掺假。在此分析中，将肉样品冷冻并进行LIBS分析。结果表明，通过使用主成分分析（PCA），可以成功实现对纯杂碎和杂碎掺假牛肉样品的区分。除了，²）和掺杂牛肉样品的检测限（LOD）值的3.8％。