PROTEIN AND ORGANIC RESIDUE (FTIR) ANALYSIS OF A PESTLE, AND PROTEIN RESIDUE ANALYSIS OF MORTAR CUPS FROM SITE CA-TUO-4818, YOSEMITE NATIONAL PARK, CALIFORNIA

A granite pestle and an associated soil control sample recovered from Feature 2, an exposed, low-lying granite bedrock milling station at Site CA-TUO-4818 in Yosemite National Park, California, were submitted for protein and organic residue analysis. The pestle was tested for organic residues using Fourier Transform Infrared Spectroscopy (FTIR), and for protein residue using cross-over immunoelectrophoresis (CIEP). Following completion of this analysis, three additional residue samples and corresponding soil control samples from bedrock milling station mortar cups were submitted for protein residue analysis.从加利福尼亚州优胜美地国家公园CA-TUO-4818遗址的遗迹2——一处裸露的低矮花岗岩基岩研磨遗迹——中采集的花岗岩研杵及配套土壤对照样本，被提交开展蛋白质与有机残留物分析。该研杵先通过傅里叶变换红外光谱法（Fourier Transform Infrared Spectroscopy, FTIR）检测有机残留物，再采用交叉免疫电泳法（cross-over immunoelectrophoresis, CIEP）检测蛋白质残留物。上述分析完成后，研究人员又从该基岩研磨遗迹的臼杯中采集了3份额外的残留物样本及对应的土壤对照样本，提交开展蛋白质残留物分析。