Document Detail


Roasting Process of Coffee Beans as Studied by NMR: Time Course of Changes in Composition.
MedLine Citation:
PMID:  22224944     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In this paper, we report a <sup>1</sup>H and <sup>13</sup>C NMR-based comprehensive analysis of coffee bean extracts of different degrees of roast. The roasting process of coffee bean extracts was chemically characterized using detailed signal assignment information coupled with multivariate data analysis. Thirty NMR-visible components of coffee bean extracts were monitored simultaneously as a function of the roasting duration. During roasting, components such as sucrose and chlorogenic acids were degraded; and components such as quinic acids, <i>N</i>-methylpyridinium, and water-soluble polysaccharides were generated. Caffeine and <i>myo</i>-inositol were relatively thermally stable. Multivariate data analysis indicated that some components, such as sucrose, chlorogenic acids, quinic acids, and polysaccharides, could serve as chemical markers during coffee bean roasting. The present composition-based quality analysis provides an excellent holistic method and suggests useful chemical markers to control and characterize the coffee roasting process.
Authors:
Feifei Wei; Kazuo Furihata; Masanori Koda; Fangyu Hu; Takuya Miyakawa; Masaru Tanokura
Related Documents :
11045474 - A catalytic asymmetric strecker-type reaction promoted by lewis acid-lewis base bifunct...
19821594 - Preparation of multiwalled carbon nanotube-supported nickel catalysts using incipient w...
22208224 - Immunotoxicity activity from the essential oils of coriander (coriandrum sativum) seeds.
22209464 - S-carboxyethylcysteine (a constituent of acacia seed) negatively affects casein protein...
19872504 - Resemblances between the electromotor variations of rhythmically reacting living and no...
12221084 - Nhe1 regulates the stratum corneum permeability barrier homeostasis. microenvironment a...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-1-6
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  -     ISSN:  1520-5118     ISO Abbreviation:  -     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-1-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Orientational Dynamics of Room Temperature Ionic Liquid/Water Mixtures: Water-Induced Structure.
Next Document:  ESP of Giardia lamblia induce IL-8 production in human colonic cells via activation of p38, ERK1/2, ...