Carbohydrates are very good tracers for the authenticity assessment of soluble (instant) coffee. Total glucose and total xylose were determined in 1002 samples of commercial soluble coffees using high-performance anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD) according to AOAC Method 995.13 and ISO standard 11292. The samples analyzed included both authentic and adulterated coffees but were all sold as 100% pure soluble coffee. The statistical model, called "mixture of distributions," was applied to all results and allowed to derive the maximum content of the 2 carbohydrates in the population of products corresponding to pure soluble coffee: 2.32% for total glucose and 0.42% for total xylose. The specification limits, above which a soluble coffee should be considered as adulterated, were calculated by adding the corresponding expanded measurement uncertainty to the maximum content. Specification limits of 2.46% for total glucose and 0.45% for total xylose were obtained. The data statistically confirm previously established criteria for the authenticity assessment of commercial soluble coffee.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Seasonal Morphological and Biochemical Variation of Pierre ex A. Froehner (Rubiaceae) Leaves of Early, Intermediate and Late Maturing Genotypes.
Plants (Basel)
December 2024
Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rural-Centro Regional de Desenvolvimento Rural-Norte, Linhares 29901-443, ES, Brazil.
Understanding the growth patterns of genotypes optimizes their selection and management. The objective of this study is to investigate the seasonal variations in the morphology and biochemistry of clone leaves, considering climatic conditions and the maturation cycle. Morphological characteristics and carbohydrate contents of the leaves were analyzed throughout the growth cycle.
View Article and Find Full Text PDFChemometric Classification and Bioactivity Correlation of Black Instant Coffee and Coffee Bean Extract by Chlorogenic Acid Profiling.
Foods
December 2024
Department of Nutrition and Food Science, University of Maryland, College Park, MD 20742, USA.
Chlorogenic acids (CGAs) play a key role in defining the quality and functionality of coffee products. CGA fingerprints of black instant coffee (BIC) and coffee bean extract (CBE) were profiled using ultra-performance liquid chromatography-mass spectrometry and analyzed by chemometrics. A total of 25 CGAs were identified.
View Article and Find Full Text PDFModification of Light-Cured Composition for Permanent Dental Fillings; Mass Stability of New Composites Containing Quinoline and Quinoxaline Derivatives in Solutions Simulating the Oral Cavity Environment.
Materials (Basel)
December 2024
Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, 85-326 Bydgoszcz, Poland.
Billions of patients struggle with dental diseases every year. These mainly comprise caries and related diseases. This results in an extremely high demand for innovative, polymer composite filling materials that meet a number of dental requirements.
View Article and Find Full Text PDFThe composition and bioactivity of bound polyphenols from coffee dietary fiber during in vitro Simulating digestion.
Food Res Int
January 2025
Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, National Center of Important Tropical Crops Engineering and Technology Research, Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning 571533, Hainan, China; Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya 572000, Hainan, China. Electronic address:
Dietary fiber from coffee peel is rich in bound polyphenols good for human health due to the antioxidant activity. In this study, we evaluated the bound polyphenol release conditions and activities in coffee peel soluble dietary fiber (CPSDF) in the process of in vitro simulation digestion. The CPSDF structure became loose and porous due to simulated digestion but retained the polysaccharide backbone.
View Article and Find Full Text PDFPhysical and Mechanical Properties of Bulk-fill Resin Composites Submitted to Additional Polymerization for Use in Semi-direct Restorations.
Oper Dent
January 2025
*Roberta Tarkany Basting, DDS, MSc, PhD, professor, Restorative Dentistry Department, Faculdade de Odontologia São Leopoldo Mandic, São Paulo, Brazil.
Physical and mechanical properties of high-viscosity bulk-fill resin composites submitted to additional polymerization for semi-direct use were evaluated. Filtek Z350 XT, Aura Bulk Fill, Beautifil Bulk Restorative, Filtek One Bulk Fill Restorative, and Tetric N-Ceram Bulk Fill were submitted to additional polymerization to evaluate sorption, solubility, surface microhardness, surface roughness before and after simulated brushing, color stability after coffee staining, flexural strength, elastic modulus, and modulus of resilience. Filtek Z350 XT and Filtek One Bulk Fill Restorative showed higher sorption values, while Aura Bulk Fill showed higher solubility (p<0.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!