Temat: volatile metabolites - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Untargeted Metabolomics Analysis Reveals the Effect of Fixation on the Profile of Volatile Compounds of Cyclocarya paliurus Tea
Autorzy:: Bai, Minge
Wang, Liling
Powiązania:: https://bibliotekanauki.pl/articles/48899273.pdf
Data publikacji:: 2024-08-23
Wydawca:: Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:: fixation technology
HS-SPME-GC-MS
key aroma compounds
OPLS-DA
volatile metabolites
Opis:: Fixation is a necessary tea processing step that affects the quality of tea, including its aroma. However, there are no guidelines to follow whether the Cyclocarya paliurus leaves need to be fixated to produce tea. The aim of this study was to determine the volatile metabolites in fixated and unfixated C. paliurus tea by gas chromatography-mass spectrometry in order to identify the volatile compounds that differentiate them and establish the key aroma compounds. Compared with the unfixated tea, the fixated tea had higher contents of amines, phenols, nitrogen compounds, ether, alcohol, terpenoids, ester and aromatics. A total of 147 metabolites that differentiated both types of teas were identified using principal component analysis (PCA) and orthogonal partial least squares discriminant analysis (OPLS-DA). Among them, 22 and 25 volatile compounds of teas processed without and with fixation, respectively, had relative odor activity values greater than 1. These metabolites had green, fruity, sweet, woody, herbal, floral, fresh, spicy, earthy and waxy odor. This study showed that fixation technology improved the quality of C. paliurus tea, which provided the basis for the production of C. paliurus tea, and promoted the standardization of the preparation technology of C. paliurus tea.
Źródło:: Polish Journal of Food and Nutrition Sciences; 2024, 74, 3; 232-243
1230-0322
2083-6007
Pojawia się w:: Polish Journal of Food and Nutrition Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Określanie profili metabolitów lotnych produkowanych przez izolaty Trametes versicolor wykazujące antagonistyczne działanie w stosunku do Armillaria spp.
Determination of profiles of volatile metabolites produced by Trametes versicolor isolates antagonistic towards Armillaria spp.
Autorzy:: Szwajkowska-Michałek, L.
Buśko, M.
Łakomy, P.
Perkowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/986657.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
fitopatologia lesna
opienkowa zgnilizna korzeni
Armillaria
rozwoj grzybni
ograniczenie rozwoju
Trametes versicolor
izolaty grzybowe
Trametes versicolor TR31
Trametes versicolor TR55
metabolity grzybow
metabolity lotne
lotne zwiazki organiczne
inhibited growth of armillaria
volatile metabolites of trametes versicolor
solid phase microextraction
(spme)
aldehydes
alcohols
2−methylbutanal
Opis:: Armillaria root disease is one of the most important diseases causing losses in forestry, horticulture, pomiculture and agriculture. Fungi from Armillaria spp. infest roots and stem base in trees and shrubs, causing white wood rot. In Poland the most common species include Armillaria ostoyae (Romagn.) Herink, found both in coniferous and deciduous stands, and A. gallica Marxm. et Romagn. found in deciduous stands. Identification of antagonistic interactions between microorganisms in the soil medium enables to use their activity to protect plants against pathogens. Analyses were conducted on two Trametes versicolor isolates TR31 and TR55, collected from oak stumps, and 5 fungal species from the genus Armillaria: A. borealis Marxm. et Korhonen, A. cepistipes Velen., A. gallica, A. mellea (Vahl) P. Kumm. and A. ostoyae. Profiles of volatile compounds produced by T. versicolor isolates TR31 and TR55 determined in this study varied in their effect on growth of pathogens Armillaria borealis, A. cepistipes, A. gallica, A. mellea and A. ostoyae. TR31 more effectively than isolate TR55 inhibited growth of fungi from the genus Armillaria. Profiles of volatile compounds biosynthesised in the examined fungal cultures were assessed by headspace microextraction in a gas chromatograph coupled with a mass spectrometer. We detected 179 compounds in the analysed fungal cultures. They belonged to the following groups of chemical compounds: amines, alcohols, terpenes, aldehydes, ketones, hydrocarbons, heterocyclic compounds, esters and aromatic compounds (tab. 2). The most numerous group among the isolated volatile compounds comprised hydrocarbons, alcohols and esters at 32.4%, 16.2% and 14.5%, respectively. The highest concentrations reported in RU (i.e. the peak area of a given substances in relation to the peak area of the internal standard, i.e. tridecane) were recorded for aldehydes, alcohols and hydrocarbons. Among all the identified volatile compounds the highest concentration was observed for 2−methylbutanal. However, it was characteristic only of isolate TR31, which exhibited a greater capacity to inhibit growth of Armillaria spp. in comparison to isolate TR55 (fig.).
Źródło:: Sylwan; 2018, 162, 06; 499-508
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "volatile metabolites" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język