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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 31 (1966), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A large-scale continuous liquid-liquid extractor, designed for efficiently extracting large volumes of extremely dilute essence with minimal quantities of solvent, is described. Chromatograms are compared that were obtained on Bartlett pear essences prepared by: 1) direct fruit extraction; 2) extraction of laboratory steam distillates; and 3) extraction and 4) adsorption techniques applied to a commercial deaerator effluent.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 31 (1966), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A volatile-essence concentrate isolated from the Red Globe variety of freestone peaches and already partially characterized, was further fractionated by newly developed gas chromatographic techniques of repetitive ultra micro collections and reinjections. An adapted micro-cavity infrared cell permitted infrared analysis of these minute fractions, which were then identified by comparison with known compounds. Synthesis and ultra-micro vapor-phase hydrogenation were used to characterize compounds for which standards could not he obtained. Compounds identified include hexyl formate, hexyl acetate, tram-2-hexenyl acetate, hexyl alcohol, trans-2-hexenel-01, isovaleric acid, ethyl benzoate, benzyl acetate, caproic acid, ganzma-heptalactone, gamma-nonalactone, hexyl benzoate, and an alpha-pyrone.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 29 (1964), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: On the basis of relative retentions of two dissimilar gas chromatographic columns and matching infrared spectra, benzaldebyde, benzyl alcohol, γ-caprolactone, γ-octalactone, γ-decalactone and δ-decalactone were identified as components of Red Globe peach essence. The chromatographic peculiarities of peach essence are discussed, and a modified technique that may permit resolution of multiple-component peaks is described. There are indications that peaches, unlike Bartlett pears, may owe their aroma entirely to an integrated response to a series of contributory flavor compounds.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 36 (1971), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 29 (1964), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Bartlett pear essence was separated by gas chromatography without losing its desirable aroma characteristics. This was done by room-temperature on-column injections, followed by a programmed temperature increase of the chromatographic column. Evidence is presented indicating that the methyl (or other short-chain alcohol moiety) ester of trans-2: cis-4 decadienoic acid is present. Hexyl acetate was identified as a “contributory flavor compound” of Bartlett pear. The infrared spectra of several other esters, which may be “character impact compounds,” are presented, and their correlations with functional groups are discussed.
    Type of Medium: Electronic Resource
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