Method and Apparatus for Characterization and Analysis of Aroma Mixtures
The novel invention allows for the non-reductive characterization of complex aromas and flavors. The invention can be used to identify subsets of compounds in a sample that are responsible for the aroma character of the sample.The invention does not require chemical standards, reductive aroma models, or calculation of Odor Activity Values to identify important subsets of compounds that contribute to a substance's aroma and flavor. The invention allows for the characterization of emergent perceptual properties that arise from the interactions of complex volatile mixtures that are encountered in everyday smell and flavor situations.
Analysis and characterization of aromas and component volatiles are vital features in food, beverage, substance detection, and cosmetic industries
Aroma perception is the result of stimulation of the olfactory system by volatile chemicals and mixtures. Most current analytical approaches for characterizing and quantifying the relationship between aroma perception and chemical composition in complex mixtures (e.g., foods, beverages and perfumes) require an initial separation of the mixture into individual components. The components are identified and quantified and those compounds that are determined to be present at concentrations above sensory thresholds may be obtained in pure form and then mixed back together to make an aroma reconstitute that matches as closely as possible the original aroma of the sample. Such methodologies are necessarily reductive in their approach, however, and do not fully assess the aroma quality of complex mixtures of compounds, particularly in cases where not all aroma-active compounds can be characterized or accurately quantified. As a result, these previous methods frequently suffer "reconstitution discrepancy," wherein the aroma of the reconstitution still smells different from the original mixture. Researchers at the University of California Davis have devised a novel platform to assess the perceptual effect of mixing an arbitrary number of volatile compounds from a mixture without the need for reconstitution with pure chemical standards. This novel instrumentation and method allow for in-instrument preparation of mixtures containing precise sections from a sample's chromatogram, up to and including the entire volatile fraction, allowing for aroma characterization of the impact of one or a few volatiles in a complex mixture.
Patent Number: MY126511A
Application Number: MY1999PI1023A
Inventor: DR. CHAN SEI
Priority Date: 18 Mar 1999
Priority Number: MY126511A
Application Date: 18 Mar 1999
Publication Date: 31 Oct 2006
IPC Current: H02K003700
Assignee Applicant: Institut Teknologi Mara
Title: TWO PHASE VARI
Usefulness: TWO PHASE VARI
Summary: Two-phase switched variable reluctance motor e.g. axial flux motor and linear reluctant motor (all claimed).
Novelty: Two-phase switched variable reluctance motor e.g. axial flux motor, has stator including poles with unequal pitches, where rotor pole is in zero torque generating position while another rotor pole is in position for generating torque
测量/测试
测试平台
9188568
Related Materials Tech ID/UC Case 22331/2012-462-0 Related Cases 2012-462-0
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