Characterization of spoilage-related volatile organic compounds in packaged leaf salads

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F20%3A00519358" target="_blank" >RIV/61388955:_____/20:00519358 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0304353" target="_blank" >http://hdl.handle.net/11104/0304353</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ffj.3535" target="_blank" >10.1002/ffj.3535</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of spoilage-related volatile organic compounds in packaged leaf salads

Popis výsledku v původním jazyce

A study has been made of the volatile organic compounds (VOCs) released into the contained headspace of packaged lamb's lettuce (Valerianella locusta) plants, cut at the roots, and of separated rocket (Eruca sativa) and baby spinach (Spinacia oleracea) leaves. Direct real-time analyses of the headspace were carried out on each of five consecutive days using selected-ion flow-tube mass spectrometry (SIFT-MS) and secondary electrospray ionization mass spectrometry (SESI-MS), together with concomitant off-line analyses using solid-phase microextraction (SPME) and gas chromatography mass spectrometry (GC-MS). It was observed that the concentrations of organosulphur compounds, especially dimethyl sulphide (DMS) and dimethyl disulphide (DMDS) were relatively low in the headspace of fresh samples, but increased exponentially over the 5 days for rocket, increased to a lesser extent for spinach, and increased to an even lesser extent for lamb's lettuce. Methanol was detected in the headspace of even fresh samples of lamb's lettuce, and its concentration increased for the subsequent 2–3 days before decreasing. This trend was mirrored in the isoprenoids analysed, which are characteristic of plant tissues. These results show that direct real-time VOC analyses by SIFT-MS can be usefully exploited to monitor fresh leaf salad spoilage, and that SESI-MS spectra show patterns that are characteristic of salad type and storage time.

Název v anglickém jazyce

Characterization of spoilage-related volatile organic compounds in packaged leaf salads

Popis výsledku anglicky

A study has been made of the volatile organic compounds (VOCs) released into the contained headspace of packaged lamb's lettuce (Valerianella locusta) plants, cut at the roots, and of separated rocket (Eruca sativa) and baby spinach (Spinacia oleracea) leaves. Direct real-time analyses of the headspace were carried out on each of five consecutive days using selected-ion flow-tube mass spectrometry (SIFT-MS) and secondary electrospray ionization mass spectrometry (SESI-MS), together with concomitant off-line analyses using solid-phase microextraction (SPME) and gas chromatography mass spectrometry (GC-MS). It was observed that the concentrations of organosulphur compounds, especially dimethyl sulphide (DMS) and dimethyl disulphide (DMDS) were relatively low in the headspace of fresh samples, but increased exponentially over the 5 days for rocket, increased to a lesser extent for spinach, and increased to an even lesser extent for lamb's lettuce. Methanol was detected in the headspace of even fresh samples of lamb's lettuce, and its concentration increased for the subsequent 2–3 days before decreasing. This trend was mirrored in the isoprenoids analysed, which are characteristic of plant tissues. These results show that direct real-time VOC analyses by SIFT-MS can be usefully exploited to monitor fresh leaf salad spoilage, and that SESI-MS spectra show patterns that are characteristic of salad type and storage time.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA18-12902S" target="_blank" >GA18-12902S: Hmotnostní spektrometrie se sekundární elektrosprejovou ionizací (SESI-MS) pro kvantifikaci plynných analytů v ovzduší, prostoru nad vzorky a v dechu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Flavour and Fragrance Journal

ISSN

0882-5734

e-ISSN

—

Svazek periodika

35

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

24-33

Kód UT WoS článku

000531410600002

EID výsledku v databázi Scopus

2-s2.0-85071921609