Chlorogenic acids (CGA) are a class of polyphenols noted for their health benefits. These compounds were identified and quantified, using LC-MS and HPLC, in commercially available coffees which varied in processing conditions. Analysis of ground and instant coffees indicated the presence of caffeoylquinic acids (CQA), feruloylquinic acids (FQA) and dicaffeoylquinic acids (diCQA) in all 18 samples tested. 5-CQA was present at the highest levels, between 25 and 30% of total CGA; subsequent relative quantities were: 4-CQA>3-CQA>5-FQA>4-FQA>diCQA (sum of 3,4, 3,5 and 4,5-diCQA). CGA content varied greatly (27.33-121.25mg/200 ml coffee brew), driven primarily by the degree of coffee bean roasting (a high amount of roasting had a detrimental effect on CGA content). These results highlight the broad range of CGA quantity in commercial coffee and demonstrate that coffee choice is important in delivering optimum CGA intake to consumers.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.foodchem.2013.06.014 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Hydrodynamic cavitation induced fabrication of soy protein isolate-polyphenol complexes: Structural and functional properties.
Curr Res Food Sci
January 2025
School of Biological and Chemical Engineering, Guangxi University of Science and Technology, Guangxi Key Laboratory of Green Processing of Sugar Resources, Key Laboratory for Processing of Sugar Resources of Guangxi Higher Education Institutes, Liuzhou, 545006, China.
The combination of polyphenols and protein can improve the functional characteristics of protein. How to effectively promote the binding of polyphenols to protein is still a difficult topic. In this study, hydrodynamic cavitation (HC) was used to induce the fabrication of complexes between soy protein isolate (SPI) and different polyphenols (tannic acid (TA), chlorogenic acid (CGA), ferulic acid (FA), caffeic acid (CA), and gallic acid (GA)).
View Article and Find Full Text PDFStrategies to enhance management of HER2-positive breast cancer in the elderly: an expert consensus perspective.
Clin Transl Oncol
January 2025
Medical Oncology Department, Hospital del Mar, Parc de Salut Mar, Spanish Group for Breast Cancer Research (GEICAM), Barcelona, Spain.
Therapeutic decision-making for older patients with human epidermal growth factor receptor 2 (HER2)-positive breast cancer highlights the importance of a comprehensive geriatric assessment (CGA). This assessment considers the functional status, comorbidities, and relevant conditions of the patient, and allows for an estimation of life expectancy, but it does not facilitate individualized treatment plans. There are also other challenges to consider related to the cardiac toxicity of the treatments and the under-representation of older patients in clinical trials.
View Article and Find Full Text PDFComparative Analysis of Phytochemical and Functional Profiles of Arabica Coffee Leaves and Green Beans Across Different Cultivars.
Foods
November 2024
College of Veterinary Medicine, Jeju National University, Jeju 63243, Republic of Korea.
This study analyzed the phytochemical composition and functional properties of leaves and green beans from seven Arabica coffee cultivars. The total phenolic and flavonoid contents were measured using spectrophotometric methods, while caffeine, chlorogenic acid (CGA), and mangiferin levels were quantified via High-Performance Liquid Chromatography (HPLC). Volatile compounds were identified using Gas Chromatography-Mass Spectrometry (GC-MS).
View Article and Find Full Text PDFDescription of mitochondrial genomes and phylogenetic analysis of Megophthalminae (Hemiptera: Cicadellidae).
J Insect Sci
November 2024
Department of Institute of Entomology, Guizhou University, The Provincial Key Laboratory for Agricultural Pest Management Mountainous Region, Guiyang, Guizhou, China.
Article Synopsis
- The study sequenced and analyzed the mitogenomes of 12 leafhopper species from the subfamily Megophthalminae to understand their phylogenetic relationships.
- The mitogenomes were found to contain 37 genes with a size range of 15,193 to 15,986 base pairs, exhibiting similar structures and a higher AT content compared to GC.
- Phylogenetic analyses confirmed that Megophthalminae species form a monophyletic group within the Cicadellidae, emphasizing the influence of natural selection on codon usage bias in their mitochondrial genes.
Effect of coffee roasting level on tooth discoloration.
J Oral Sci
January 2025
Department of Oral Anatomy and Dental Research Institute, School of Dentistry, Seoul National University.
Purpose: Coffee consumption is a well-known contributor to tooth discoloration, and the extent of staining is influenced by the chemical composition of the coffee. This study investigated the associations of coffee roasting level, chlorogenic acid (CGA) content, absorbance level, and their combined effects with tooth discoloration.
Methods: Bovine tooth enamel specimens were immersed in light, medium, and dark roasts of four coffee types (two Arabica and two Robusta coffees) for 72 h.
Want 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!