Abstract：
:Arrays of electronic sensors, capable of detecting and differentiating complex mixtures of volatile compounds, have been utilized to differentiate aromas of food and related materials. These sensor arrays have been dubbed "Electronic Noses" and have been commercially available in the USA for the past 4-5 years. Electronic nose technology is still in its development phase, both in respect to hardware and software development. The instruments contain an array of from one to 32 sensors, using a variety of different sensor technologies--from organic polymers to metal oxides to micro-balances. Electronic noses are being widely used by some companies as a quality control instrument. Strengths include high sensitivity and correlation to human sensory panels for many applications. Limitations to their full potential includes loss of sensitivity in the presence of water vapor or high concentrations of a single component like alcohol; sensor drift and the inability to provide absolute calibration: relatively short life of some sensors; necessity to do considerable method development work for each specific application; and lack of being able to obtain quantitative data for aroma differences. They do have a high sensitivity (ppt to ppm) and are often more sensitive than the human nose. There is some evidence that sensors differentiate aromas on the basis of relatively few compounds and in the future a relationship between specific chemicals and a single flavor attribute may be achievable. Also, the possibility exists to differentiate between "top" and "middle" notes of aroma.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Harper WJdoi
10.1007/978-1-4615-1247-9_5subject
Has Abstractpub_date
2001-01-01 00:00:00pages
59-71eissn
0065-2598issn
2214-8019journal_volume
488pub_type
杂志文章,评审abstract：:Many secondary metabolites of interest for human health and nutrition are produced by plants when they are under attack of microbial pathogens or insects. Treatment with elicitors derived from phytopathogens can be an effective strategy to increase the yield of specific metabolites obtained from plant cell cultures. U...
journal_title：Advances in experimental medicine and biology
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journal_title：Advances in experimental medicine and biology
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doi：10.1007/978-1-4615-0075-9_42
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pub_type： 杂志文章
doi：10.1007/978-1-4614-6130-2_1
更新日期：2013-01-01 00:00:00
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更新日期：2017-01-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/978-1-4419-5692-7_21
更新日期：2010-01-01 00:00:00
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pub_type： 杂志文章
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更新日期：1978-01-01 00:00:00
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pub_type： 杂志文章,评审
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pub_type： 杂志文章,评审
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
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更新日期：1999-01-01 00:00:00
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abstract：:R3230Ac mammary tumors were grown in transparent window chambers implanted into the dorsal skin flap of 250 g Fischer 344 rats (see Dewhirst et al, 1992). The oxygen pressure distributions in the tumor and host tissue were measured by the oxygen dependent quenching of phosphorescence (see Vinogradov et al, 1996) after...
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pub_type： 杂志文章
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
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更新日期：2007-01-01 00:00:00
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