Abstract：
Coffee, a globally consumed beverage, has raised concerns in Islamic jurisprudence due to the possible presence of alcohol compounds. This research aims to utilise the sensitivity and reliability of 1H NMR spectroscopy in the quantification of alcohol compounds such as ethanol, furfuryl alcohol, and 5-(hydroxymethyl) furfural (HMF) in commercial instant coffee. Analysis of seven products was performed using advanced 1H Nuclear Magnetic Resonance (NMR) spectroscopy together with Statistical Total Correlation Spectroscopy (STOCSY) and Resolution-Enhanced (RED)-STORM. The analysis of the 100 mg sample revealed the absence of ethanol. The amount of furfuryl alcohol and HMF in the selected commercial instant coffee samples was 0.817 μg and 0.0553 μg, respectively. This study demonstrates the utility of 1H NMR spectroscopy in accurate quantification of trace components for various applications.
摘要：
咖啡,一种全球消费的饮料，由于可能存在酒精化合物，引起了伊斯兰法学的关注。本研究旨在利用1HNMR光谱的灵敏度和可靠性定量醇化合物，如乙醇，糠醇,和5-(羟甲基)糠醛(HMF)在商业速溶咖啡中。使用先进的1H核磁共振(NMR)光谱法以及统计总相关光谱法(STOCSY)和分辨率增强(RED)-STORM进行七种产物的分析。100mg样品的分析显示不存在乙醇。在选定的商业速溶咖啡样品中糠醇和HMF的量为0.817μg和0.0553μg,分别。这项研究证明了1HNMR光谱在精确定量各种应用中的痕量成分中的实用性。
