Analysis of carboxylic acids and esters

S., T.

doi:10.1002/9780470771099.ch17

Cited by 4 publications

(2 citation statements)

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“…This has led to the common practice of using sensory panels in food quality assessment,6, 10 a practice suggested as early as the Greek classical period 11. Analytical methods have been sought which can substitute for the human nose as a quantitative analytical tool 8, 12–14. With advances made in this technology, many volatile compounds have been successfully and routinely identified in food products 3, 5.…”

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The reactions of H₃O⁺, NO⁺and O 2+ with several flavourant esters studied using selected ion flow tube mass spectrometry

Iachetta

Malek

Ross

2010

Rapid Commun. Mass Spectrom.

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The reactions of H(3)O(+), NO(+), and O(2) (+) with nineteen ester compounds occurring naturally in plants, and having important flavourant properties, were examined using selected ion flow tube mass spectrometry (SIFT-MS). The H(3)O(+) reactions primarily generate [R(1)COOR(2).H](+), and may also produce [R(2)](+) fragment ions and/or fragmentation within the ester linkage. Collisional association/adduct ions, [R(1)COOR(2).NO](+), are the main products formed in the NO(+) reactions, although the carboxyl fragment ion is also detected frequently. The identification of the parent compound may be made more easily in the H(3)O(+) and NO(+) reactions. The inclusion of O(2) (+) reactions in the analysis provides additional information, which may be applied when the identity of a parent compound cannot be determined solely from the H(3)O(+) and NO(+) analysis. Consideration of the product ions generated with the three precursors suggests that SIFT-MS can differentiate between many of the esters investigated, including isomers, although the product ions generated in the reactions with some esters are too similar to allow independent quantification. Our data therefore suggest that SIFT-MS may be a useful tool to rapidly analyse and quantify flavourant esters in complex gas mixtures.

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confidence: 99%

The reactions of H₃O⁺, NO⁺and O 2+ with several flavourant esters studied using selected ion flow tube mass spectrometry

Iachetta

Malek

Ross

2010

Rapid Commun. Mass Spectrom.

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“…Laboratory purification of the free fatty acids can be achieved by recrystallization from methanol or other polar solvents and thorough drying in vacuo. Other analytical techniques, such as thin-layer, paper, and column chromatography can also be used (Ma, 1969). The purity of the free acid, especially the absence of other fatty acids, can be established readily by gas liquid chromatography of the methyl or w-propyl ester (de Lindemann, 1970).…”

Section: Anionic Surfactantsmentioning

confidence: 99%

Preparation and Purification of Synthetic and Naturally Occurring Surfactants

Fendler

1975

Catalysis in Micellar and Macromoleular Systems

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Esters, Organic

Riemenschneider¹

2000

Ullmann's Encyclopedia of Industrial Chemistry

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Analysis of carboxylic acids and esters

Cited by 4 publications

References 78 publications

The reactions of H₃O⁺, NO⁺and O 2+ with several flavourant esters studied using selected ion flow tube mass spectrometry

The reactions of H₃O⁺, NO⁺and O 2+ with several flavourant esters studied using selected ion flow tube mass spectrometry

Preparation and Purification of Synthetic and Naturally Occurring Surfactants

Esters, Organic

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Analysis of carboxylic acids and esters

Cited by 4 publications

References 78 publications

The reactions of H3O+, NO+and O 2+ with several flavourant esters studied using selected ion flow tube mass spectrometry

The reactions of H3O+, NO+and O 2+ with several flavourant esters studied using selected ion flow tube mass spectrometry

Preparation and Purification of Synthetic and Naturally Occurring Surfactants

Esters, Organic

Contact Info

Product

Resources

About

The reactions of H₃O⁺, NO⁺and O 2+ with several flavourant esters studied using selected ion flow tube mass spectrometry

The reactions of H₃O⁺, NO⁺and O 2+ with several flavourant esters studied using selected ion flow tube mass spectrometry