Temat: volatile compounds - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Porównanie profilu lotnych związków wybranych czekolad naturalnych oraz miazg kakaowych
Comparing the profile of volatile compounds in natural chocolate and cacoa pulp
Autorzy:: Kruszewski, B.
Obiedziński, M.
Powiązania:: https://bibliotekanauki.pl/articles/270522.pdf
Data publikacji:: 2011
Wydawca:: Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:: związki lotne czekolady
volatile compounds
chocolate
Opis:: Celem podjętego badania była analiza profilu związków lotnych czekolad naturalnych gorzkich i miazg kakaowych oraz określenie różnic między tymi profilami za pomocą techniki statystycznej PCA. Ekstrakcję związków lotnych materiału badawczego wykonano techniką HS-SPME, a następnie poddano analizie metodą chromatografii gazowej sprzężonej ze spektrometrią mas (GC/MS). Największe różnice w profilu związków lotnych wynikały z zawartości masy kakaowej w materiale badawczym. Ważną rolę w różnicowaniu czekolad odgrywała zawartość kwasu octowego oraz acetofenonu. Stwierdzono również, że w prawie wszystkich profilach frakcji lotnej pirazyny były obecne w zbliżonych ilościach i nie wpływały istotnie na przydzielanie próbek do grup. Tylko w czekoladach wysoko kakaowych (>70%) oraz miazgach wykryto estry kwasu octowego. Natomiast w przeciwieństwie do miazg, w czekoladach wysoko kakaowych wykryto wanilinę i etylowanilinę.
The main purpose of this study was profile analysis of volatile compounds of natural bitter chocolate and cocoa pulp and identify the differences between these profiles using the statistical technique of PCA. Therefore, a solid-phase microextraction of volatile fractions from headspace layer of research material was taken and then analyzed by gas chromatography coupled to mass spectrometry. The biggest differences in the profile of volatile compounds were resulted from the content of cocoa solids in the research material. Major role in differentiating played acetic acid and acetophenone content. It was also found that in almost all volatile fractions profiles pyrazines were present in similar quantities and they made no significant effect on the allocation of samples to groups. Only in high-cocoa chocolates (> 70%) and pulps were detected esters of acetic acid. However as opposed to the pulp, in high-cocoa chocolates vanillin and ethyl vanillin were detected.
Źródło:: Aparatura Badawcza i Dydaktyczna; 2011, 16, 4; 57-64
2392-1765
Pojawia się w:: Aparatura Badawcza i Dydaktyczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Chemical Scanner for Mobile Robot Navigation
Autorzy:: Batog, P.
Wołczowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/384299.pdf
Data publikacji:: 2015
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: odours
volatile compounds
semiconductor gas sensors
Opis:: The paper presents a tentative solution to the problem of olfaction-based mobile robot navigation in the chemical plume. This type of navigation requires fast and reliable detection of small gradient of gas concentration in 3D space. The special sensor system designed to detect odour plume with significantly reduced inertia named ”chemical scanner” was proposed [5]. A special aƩention has been given to evaluate sensing system performance in stable and repeatable conditions. The ability to detect small gradient of gas concentration was examined on a special test bench. The real spatial distribution of tested gas in the air was estimated using CFD simulation. The results proved that the real-time detection of small (a few percent of measured value) difference in gas concentration on very short distance (a several centimetres range) is possible. The next stage of research will examine of the developed sensor system on the mobile plaƞorm for its navigation.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2015, 9, 1; 5-11
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Seasonality study of extracts from leaves of Thuja occidentalis L.
Autorzy:: Chajduk, M.
Gołębiowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/2142057.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: extract
GC-MS
Thuja occidentalis
volatile compounds
Opis:: The market value of essential oils is steadily increasing every year. They are mainly used as aromas and preservatives in food and cosmetics industries. The content and yield of the obtained extracts change across the seasons of the year. The knowledge of these differences is important for essential oils industry to gain the best quality and quantity of products. In this study Thuja occidentalis L. (Eng. northern white cedar) extract was obtained from leaves by maceration in dichloromethane. Plant material was collected during each season of the year and the finished products were thoroughly examined through GC-MS analysis. The seasonal variations of volatile compound composition showed that the most adequate period to obtain T. occidentalis extract on an industrial scale is spring. This is due to the best efficiency (almost 10%) and the highest content of monoterpenes (67%).
Źródło:: Acta Biologica Cracoviensia. Series Botanica; 2022, 64, 1; 7-14
0001-5296
Pojawia się w:: Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Floral scent compounds and emission patterns of three Styrax species
Autorzy:: Chen, C.
Cao, Y.
Chen, H.
Ni, M.
Yu, F.
Powiązania:: https://bibliotekanauki.pl/articles/2078258.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:: Styrax species
volatile compounds
terpenes
SPME-GC/MS
Opis:: Styrax is a gorgeous species combined with high medicinal and ornamental values, however, in- formation about its floral scents is limited. This study aimed to reveal the floral scent compounds and the dynamic changes in the flowering process of Styrax japonicus, S. grandiflora and S. calvescens. Static headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry was adopted in the pres- ent study. The results showed that 24, 22 and 22 volatile compounds were present at three flowering stages, among which linalool, ocimene, α-pinene and germacrene D dominated in different species. Terpenes were the main floral scent compounds in all species, whereas there was considerable relative content of ketones in S. japonicus. Among the major terpenes, α-pinene, ocimene and myrcene were the common volatiles in these species, while β-elemene and allo-ocimene were the specific volatiles in S. japonicus and S. calvescens, respec- tively. The highest content of terpenes occurred at initial flowering stage in three species. The differences in the type and content of principal compounds contributed to the fragrance diversity among these species. A solid foundation for understanding the complexity of volatile emission could be obtained from our findings, meanwhile, effective utilization of abundant terpenes in flowers of Styrax species should be applied.
Źródło:: Dendrobiology; 2021, 85; 30-38
1641-1307
Pojawia się w:: Dendrobiology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The cytotoxicity verification of the VOCs removal by means of photocatalysis
Autorzy:: Czarny, A.
Zaczyńska, E.
Hirszfeld, L.
Górniak, A.
Janicka, A.
Zawiślak, M.
Powiązania:: https://bibliotekanauki.pl/articles/2073650.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: cytotoxicity
photocatalysis
volatile organic compounds
Opis:: This paper constitutes the approach to correlate the results of gas purification properties performed with aid of photocatalysis with the cytotoxicity test results. The gas purification by means of photocatalysis is a subject well known a profusely described in literature. Easiness and continence of application causes the photocatalysis to be used in variety of industries, however this paper considers only automotive industry application. The effectiveness of photocatalysis have been proven experimentally by vast number of researchers. However, the literature contains only the information about the level of volatile organic compounds identification and reduction. The toxicity measure in terms of living cells was not yet fully tested and described in literature. Therefore, the standard chromatography test which enables quantitative identification of volatile organic compounds was confronted with a cytotoxicity tests revealing the virtual toxicity of gases before and after photocatalysis.
Źródło:: Journal of Polish CIMEEAC; 2015, 10, 1; 37--44
1231-3998
Pojawia się w:: Journal of Polish CIMEEAC
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The method for stabilisation of temperature and humidity in VOC chambers
Metoda stabilizacji temperatury i wilgotności w komorach VOC
Autorzy:: Wojutyński, J.
Powiązania:: https://bibliotekanauki.pl/articles/258257.pdf
Data publikacji:: 2015
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:: volatile organic compounds
VOC
humidity
temperature
fuzzy logic
Volatile Organic Compounds
wilgotność
temperatura
logika rozmyta
Opis:: This paper presents selected issues of the design of precise control devices for the characteristics of the process environment in the VOC (Volatile Organic Compounds) chambers, in which non-standard validation tests are performed. The main parameters defining the environmental conditions are temperature and humidity. Particular attention was paid to the elimination of pollution generating sources in the background of the chamber. The module designed to control the temperature and humidity is presented. The results of the recording of temperature and humidity in several-month-long test cycles are presented. The developed modules have been used in chambers for testing the emissions of volatile organic compounds and formaldehyde.
W artykule przedstawiono wybrane zagadnienia projektowania urządzeń do precyzyjnego sterowania charakterystykami środowiska procesowego w komorach VOC (Volatile Organic Compounds), w których prowadzone są niestandardowe badania atestacyjne. Głównymi parametrami określającymi warunki środowiska jest temperatura i wilgotność. Szczególną uwagę zwrócono na eliminację źródeł generowania zanieczyszczeń w tle komory. Zaprezentowano opracowany moduł do regulacji temperatury i wilgotności. Przedstawiono wyniki rejestracji temperatury i wilgotności w kilkumiesięcznych cyklach badawczych. Opracowane moduły zostały zastosowane w komorach do badania emisji lotnych związków organicznych oraz formaldehydu.
Źródło:: Problemy Eksploatacji; 2015, 3; 65-74
1232-9312
Pojawia się w:: Problemy Eksploatacji
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Dobór parametrów ekstrakcji związków lotnych win czerwonych analizowanych techniką SPME-GC-MS
Determination of the extraction conditions for the analysis of volatile compounds in red wines using SPME-GC-MS technique
Autorzy:: Ziółkowska, A.
Jeleń, H. H.
Powiązania:: https://bibliotekanauki.pl/articles/270571.pdf
Data publikacji:: 2010
Wydawca:: Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:: ekstrakcja
związki lotne win czerwonych
extraction
volatile compounds
red wines
Opis:: Wina posiadają zróżnicowany profil związków lotnych. Zależy on od rodzaju wina, gatunku winogron, procesu fermentacji i leżakowania. Do analizy związków lotnych win stosuje się wiele metod opartych na analizie fazy nadpowierzchniowej. Celem badań był dobór parametrów ekstrakcji związków lotnych win czerwonych analizowanych metodą mikroekstrakcji do fazy stacjonarnej w połączeniu z chromatografią gazową i spektrometrią mas (SPME-GC-MS). Przeanalizowano następujące parametry techniki SPME: rodzaj włókna SPME, czas ekstrakcji, objętość próby i powtarzalność analizy. Wykorzystano pięć włókien: PDMS, Carboxene/PDMS, Carboxene/DVB/PDMS, Polyacrylate, Divinylbenzene/PDMS oraz czasy ekstrakcji w przedziale 2-30 minut. W celu optymalizacji procesu ekstrakcji zastosowano dwie różne objętości próby 5ml i 10ml, a ekstrakcję prowadzono kilka razy z tej samej fiolki. Ustalono następujące parametry analizy związków lotnych techniką SPME-GC-MS: włókno Carboxene/DVB/PDMS 2cm, ekstrakcja 20 minut w trzech powtórzeniach z jednej fiolki, objętość próby - 10ml.
Wines have various profiles of volatile compounds. It depends on the type of wine, grapes, fermentation and ageing processes. Many different methods based on headspace analysis are used for the determination of the volatile compounds in wines. The aim of this research was to determine of the extraction conditions for the analysis of volatile compounds in red wines using SPME-GC-MS method. The following SPME parameters were elaborated to maximize extraction efficiency: SPME fiber choice, extraction time, sample volume and repeatablility of the analysis. Five different types of fibers: PDMS, Carboxene/PDMS, Carboxene/DVB/PDMS, Polyacrylate, Divinylbenzene/PDMS and the extraction time in the range of 2-30 minutes were checked. In order to optimize extraction process two different sample volumes 5ml and 10ml and multiple extraction from a single vial were evaluated. The optimal parameters for the SPME-GC-MS method were the following: extraction performed for 20 minutes with Carboxene/DVB/PDMS fiber 2cm length with 3 repetitions performed from the same vial using 10ml of wines for the analysis.
Źródło:: Aparatura Badawcza i Dydaktyczna; 2010, 15, 3; 19-23
2392-1765
Pojawia się w:: Aparatura Badawcza i Dydaktyczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Studies of atmospheric - pressure microwave plasmas used for gas processing
Autorzy:: Mizeraczyk, J.
Jasiński, M.
Nowakowska, H.
Dors, M.
Powiązania:: https://bibliotekanauki.pl/articles/146394.pdf
Data publikacji:: 2012
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: microwaves
plasma
volatile organic compounds
hydrogen
Opis:: This paper concerns the atmospheric-pressure microwave plasmas and their applications, mainly for gas processing. Several types of atmospheric-pressure microwave sources (MPSs), i.e. surface-wave-sustained MPS, nozzle-type MPSs, nozzleless MPSs, plasma-sheet MPSs and microwave microplasma sources - MmPSs (antenna- and coaxial-line- -based) as well as their performance are presented. The presented experimental results on the optimization of selected MPSs are confronted with results of the modelling of the electromagnetic field in them. The paper deals also with the applications of MPSs for the processing of gases. Two types of the plasma gas processing were experimentally tested: decomposition of volatile organic compounds (VOCs) and reforming of VOCs (mainly methane) into hydrogen. Results of the laboratory experiments on the plasma processing of several highly-concentrated (up to 100%) VOCs, including freon-type refrigerants, in the waveguide-supplied MPSs showed that the microwave discharge plasma is capable of fully decomposing the VOCs at relatively low energy cost. The use of waveguide-supplied coaxial-line-based and metal-cylinder-based nozzleless MPSs to methane reforming into hydrogen turned out to be energetically efficient. These selected results show MPSs to be an attractive tool for gas processing, including the harmful gas decomposition and production of useful gases.
Źródło:: Nukleonika; 2012, 57, 2; 241-247
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Tubular biofilter treatment of isobutanol emissions under various organic loading rates
Autorzy:: Chen, Hong
Peng, Liang
Wei, Yanxiao
Yu, Lie
Jiang, Bo
Wang, Hong
Yu, Guanlong
Zhang, Guijin
Powiązania:: https://bibliotekanauki.pl/articles/207774.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: biofiltration
pollutants removal
volatile compounds
biofiltracja
usuwanie zanieczyszczeń
związki lotne
Opis:: Isobutanol in waste gas streams was treated by a tubular biofilter (TBF) which continuously operated for 364 days under various organic loading rate (OLR) from 11 g·m^–3·h^–1 to 66 g·m^–3·h^–1. Results show that within 60 days, the TBF successfully started up even after changing the OLR from 31.3 to 15.6 g·m^–3·h^–1. The average removal efficiencies (REs) were totally higher than 90% when OLRs ranged from 12.14 to 66.45 g·m^–3·h^–1. Two distinct performance deterioration periods were observed at days 186–253 and days 280–334, both of which recovered without additional measurement. During these periods, the larvae and adult moth flies, been identified as Psychodinae infested the TBF, greatly affected the TBF performance. When the number of adult Psychodinae decreased, TBF performance recovered. The elimination capacity (EC) was 60.42 g·m^–3·h^–1 at the inlet OLR of 66.45 g·m^–3·h^–1, with the critical EC being around 50 g·m^–3·h^–1. Even under a low gas empty bed residence time of 15 s, the preferable REs and ECs under middle or low OLRs were still obtained by the TBF.
Źródło:: Environment Protection Engineering; 2020, 46, 1; 15-29
0324-8828
Pojawia się w:: Environment Protection Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Effects of Stewing Modes on Physicochemical Quality and Formation of Flavour Compounds of Chinese Dagu Chicken Soup
Autorzy:: Guan, Haining
Xu, Xiaojun
Feng, Chunmei
Tian, Yanli
Liu, Dengyong
Diao, Xiaoqin
Powiązania:: https://bibliotekanauki.pl/articles/28408447.pdf
Data publikacji:: 2024-02-08
Wydawca:: Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:: chicken soup
stewing modes
physicochemical quality
taste components
volatile compounds
Opis:: This study aimed to evaluate the influences of stewing modes, including high fire short time (HFST, 100°C/1 h), medium-high fire mid-length time (MFMT, 98°C/2 h), medium fire long time (MFLT, 90°C/3 h), and low fire ultra-length time (LFUT, 83°C/4 h) processing, on physicochemical parameters and flavour compound profile of Chinese Dagu chicken soup. The chicken soup prepared under the stewing mode of MFMT had smaller particle size (d_3,2 of 2.56 μm and d_4,3 of 1.73 μm), higher zeta potential (8.66 mV), and viscosity than the soups stewed under the other conditions. The umami-taste compounds, such as inosine 5'-monophosphate, and umami free amino acid were the most abundant in the soup stewed by MFMT (53.47 and 59.91 mg/100 mL, respectively). GC-MS results showed that the volatile compounds were mainly hexanal, octanal, heptanal, (E,E)-2,4-decadienal, nonanal, and 1-octen-3-ol. Additionally, the results of measurements made with the electronic nose and electronic tongue indicated that the overall flavour of the four chicken soups varied significantly. In general, considering the stability and umami taste of chicken soup, as well as the time-saving need, it is recommended to use the MFMT mode to prepare the chicken soup.
Źródło:: Polish Journal of Food and Nutrition Sciences; 2024, 74, 1; 26-40
1230-0322
2083-6007
Pojawia się w:: Polish Journal of Food and Nutrition Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Numerical analysis of volatile organic compounds concentration in a e segment vehicle interior
Autorzy:: Rodak, M.
Skrętowicz, M.
Janicka, A.
Zawiślak, M.
Powiązania:: https://bibliotekanauki.pl/articles/241913.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: volatile organic compounds
computional fluids dynamics
Opis:: Constantly increasing amount of cars causes significant deterioration of air quality. Emission of harmful substances such as aromatic hydrocarbons or soot has negative influence for human health, especially for the respiratory system. Pollutants from engine vehicles are emitted at the people living height and, especially in cities, could cumulated because of weak ventilation among the street canyons made by buildings and infrastructure. Dynamic development of motorization and people lifestyle make the time spent inside the car is getting longer. Fumes and other air pollutants can get into the car cabin, what is extremely dangerous for driver and passengers. The pollutants inside the vehicle can also accumulate and if cabin is not well ventilated, the concentrations of them could be really high. It cause changing the microclimate inside the car cabin and has negative influence on the people staying inside the car, such as lowering of comfort and focus of driver and health effects. Previous studies have shown that the highest concentration of most of the pollutants in the vehicle cabin is located at the height of the driver's head. Of course, it depends on many factors like type (category) of vehicle or geometry of nozzles in the ventilation system. The study aim was to define concentration of volatile organic compounds in an E segment vehicle cabin by using computational fluid dynamic simulation.
Źródło:: Journal of KONES; 2015, 22, 4; 235-241
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: A REVIEW ON CYCLAMEN SPECIES: TRANSCRIPTION FACTORS VS. PHARMACOLOGICAL EFFECTS
Autorzy:: Cornea-Cipcigan, Mihaiela
Pamfil, Doru
Sisea, Cristian R.
Gavriș, Cornelia P.
da Graça Ribeiro Campos, Maria
MĂRGĂOAN, Rodica
Powiązania:: https://bibliotekanauki.pl/articles/895434.pdf
Data publikacji:: 2019-12-29
Wydawca:: Polskie Towarzystwo Farmaceutyczne
Tematy:: saponins
volatile compounds
ABCDE model
cyclamin
MADS-box genes
medicinal properties
Opis:: The mechanism of floral mutation including double flowers in plant species can be explained by the ABCDE model which represents the relationship between MADS-box transcription factor genes and floral morphogenesis. The ornamental importance of Cyclamen led to the creation of double-flowered cultivars caused by the repression of AG-like gene expression in whorl 3. Modifications in these genes also influence the accumulation of different bioactive compounds depending on species and/or variety. In antiquity, cyclamen plants were recognized for their therapeutic qualities and later gained importance due to their content in saponins, which have been reported to exhibit anti-cancer, anti-inflammatory and antibacterial effects, and also to alleviate symptoms in acute rhinosinusitis patients. Furthermore, the extracts and isolated compounds are used as treatments in a wide range of diseases. In this review, we describe the transcription factors and their role in the development and ABCDE model formation of organs which led to the development of double-petal and fragrant varieties. Additionally, we describe the potential mechanisms of action underlying the therapeutic effects of saponin extracts against cancers and inflammatory disorders and their potential as a pharmacological agent in clinical studies.
Źródło:: Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 6; 919-938
0001-6837
2353-5288
Pojawia się w:: Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Buckwheat as an Interesting Raw Material for Agricultural Distillate Production
Autorzy:: Ługowoj, Szymon
Balcerek, Maria
Pielech-Przybylska, Katarzyna
Powiązania:: https://bibliotekanauki.pl/articles/1369595.pdf
Data publikacji:: 2020
Wydawca:: Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:: buckwheat
reducing sugars
starch content
ethanol fermentation
agricultural distillate
volatile compounds
Opis:: The objective of this study was to assess the suitability of buckwheat grain for agricultural distillate production. The effects of the method of starch liberation on the physicochemical composition of the prepared mashes, fermentation results, the concentration of volatile compounds in the obtained distillates, and their organoleptic features, were investigated. The raw materials used were two cultivars of buckwheat grains, Panda and Kora. Both cultivars were characterized by similar starch content, however Panda cultivar had a significantly higher content of reducing sugars. Fermentation of the Kora cultivar-based mashes resulted in a higher fermentation efficiency (up to approximately 85% of the theoretical yield) compared to the Panda cultivar-based mashes (up to approx. 75%). Of the tested methods of starch liberation, the pressure-thermal treatment was revealed as superior, especially in the case of the Panda cultivar. In the case of the Kora cultivar, both the pressure-thermal method and the pressureless method of starch liberation resulted in a high process efficiency (up to 85% of the theoretical). Supplementation of the buckwheat mashes with (NH4)2HPO4 improved fermentation results. The highest scores in sensory assessment were given to distillates from mashes prepared with the pressure-thermal treatment, which contained relatively low concentrations of undesirable compounds, such as acetaldehyde and methanol, and revealed pleasant organoleptic features.
Źródło:: Polish Journal of Food and Nutrition Sciences; 2020, 70, 2; 125-137
1230-0322
2083-6007
Pojawia się w:: Polish Journal of Food and Nutrition Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Profil organicznych związków lotnych różnych rodzajów ściółek pochodzących z kurników zlokalizowanych w Polsce
Profiles of organie volatile compounds in different types of litters in laying houses in Poland
Autorzy:: Stuper-Szablewska, K.
Buśko, M.
Szablewski, T.
Ostrowska, A.
Matysiak, A.
Nowaczewski, S.
Powiązania:: https://bibliotekanauki.pl/articles/1366454.pdf
Data publikacji:: 2015
Wydawca:: Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:: zanieczyszczenie środowiska
ściółka
związki lotne
environmental pollution
litter
livestock
volatile compounds
Opis:: Przedstawiono wyniki analizy profilu związków lotnych za pomocą GC/MS trzech rodzajów ściółek pochodzących z kurników w których utrzymywane są kury nioski. Zidentyfikowano 115 związków lotnych, 46 należało do grupy metabolitów grzybów mikroskopowych. Wśród nich dominowały aldehydy i ketony - średnio od 0,5222 (RU) dla słomy pszennej do 2,7536 (RU) dla sieczki słomiastej, oraz węglowodory - średnio od 0,1825 (RU) dla sieczki słomiastej do 1,0918 (RU) dla słomy żytniej. Przeprowadzona analiza dyskryminacyjna wykazała, że największe znaczenie podczas rozdziału populacji grup analizowanych prób ściółek na podstawie profilu związków lotnych mają następujące związki: 2-metylobutanal, 1-heptanol, naftalen oraz trichodien.
The paper presents results of analyses of the volatile compound profile provided by GC/MS for three types of litters from laying houses (poultry houses for layer hens). Among 115 identified volatile compounds 46 were found to be metabolites of microscopic fungi, predominantly aldehydes and ketones accounting on average for 0.52 (RU - peak area/area of internal standard - tridecane) for wheat straw up to 2.75 (RU) for chopped chaff, as well as hydrocarbons ranging from 0.18 (RU) for chopped chaff up to 1.09 (RU) for rye straw. Discriminant analysis showed the greatest role of 2-methylbutanal, 1-heptanol, naphthalene and trichodiene in the population distribution of groups of analyzed litter samples based on their profiles of volatile compounds.
Źródło:: Aparatura Badawcza i Dydaktyczna; 2015, 20, 3; 188-201
2392-1765
Pojawia się w:: Aparatura Badawcza i Dydaktyczna
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Effect of Cricket Powder Incorporation on the Profile of Volatile Organic Compounds, Free Amino Acids and Sensory Properties of Gluten-Free Bread
Autorzy:: Wieczorek, Martyna N.
Kowalczewski, Przemysław Ł.
Drabińska, Natalia
Różańska, Maria B.
Jeleń, Henryk H.
Powiązania:: https://bibliotekanauki.pl/articles/2152160.pdf
Data publikacji:: 2022-11-22
Wydawca:: Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:: sensory analysis
volatile compounds
edible insects
Acheta domesticus
house crickets
GC×GC-ToFMS
Opis:: Scientists around the world are interested in edible insects as a source of valuable nutrients. Among the most often described are crickets, which represent a source of significant amounts of protein, lipids, vitamins, and minerals. This article reports results of a study into the effect of starch-to-cricket powder (CP) addition on the free amino acid profile as well as potential odorants in gluten-free (GF) bread. A significant 2.6-fold increase was observed in the content of essential amino acids in the CP-enriched GF bread. Moreover, the CP addition resulted in the formation of many volatile compounds, such as pyrazines, furans, and sulfur-containing compounds, which exhibit strong aroma-enhancing properties. The attractiveness of the CP-enriched bread was confirmed by the results of the sensory analysis, showing a significant improvement in its flavor when compared to the traditional GF bread without CP. GF bread enriched with CP was characterized by caramel, roasty, and cooked potatoes notes. On the basis of the obtained results, it was concluded that the use of CP not only improves the nutritional value but also aroma of GF bread.
Źródło:: Polish Journal of Food and Nutrition Sciences; 2022, 72, 4; 431-442
1230-0322
2083-6007
Pojawia się w:: Polish Journal of Food and Nutrition Sciences
Dostawca treści:: Biblioteka Nauki

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