732 research outputs found
Związki biologicznie aktywne obecne w bioolejach roślinnych = Bioactive compounds of plant bio-oils
Dąbrowski Grzegorz, Konopka Iwona Zofia. Związki biologicznie aktywne obecne w bioolejach roślinnych = Bioactive compounds of plant bio-oils. Journal of Education, Health and Sport. 2016;6(7):301-308. eISSN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.57864http://ojs.ukw.edu.pl/index.php/johs/article/view/3690 The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part B item 755 (23.12.2015).755 Journal of Education, Health and Sport eISSN 2391-8306 7© The Author (s) 2016;This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, PolandOpen Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium,provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License(http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercialuse, distribution and reproduction in any medium, provided the work is properly cited.The authors declare that there is no conflict of interests regarding the publication of this paper.Received: 15.06.2016. Revised 09.07.2016. Accepted: 09.07.2016. ZWIĄZKI BIOLOGICZNIE AKTYWNE OBECNE W BIOOLEJACH ROŚLINNYCHBioactive compounds of plant bio-oils Grzegorz Dąbrowski*, Iwona Zofia Konopka Katedra Przetwórstwa i Chemii Surowców RoślinnychWydział Nauki o Żywności, Uniwersytet Warmińsko-Mazurski w Olsztynie *Uniwersytet Warmińsko-Mazurski w OlsztynieKatedra Przetwórstwa i Chemii Surowców RoślinnychPl. Cieszyński 1, 10-726 Olsztyne-mail: [email protected] i cel pracy: Wielonienasycone kwasy tłuszczowe nie są syntetyzowane w organizmie człowieka i muszą być dostarczone z dietą. Składniki te są ważne w walce z chorobami sercowo-naczyniowymi, nadciśnieniem, otyłością i cukrzycą. Wysoka zawartość tych kwasów w olejach obniża ich trwałość. Stabilizacja oleju może być uzyskana dzięki substancjom przeciwutleniającym takim, jak: karotenoidy, tokole, polifenole oraz skwalen. Są one też bardzo ważne dla organizmu człowieka dzięki zdolności do zapobiegania chorobom nowotworowym, sercowo-naczyniowym i neurodegeneracyjnym. Celem pracy jest scharakteryzowanie najważniejszych grup składników biologicznie aktywnych obecnych w olejach roślinnych i opisanie ich wpływu na zdrowie człowieka.Skrócony opis stanu wiedzy: Najważniejszymi składnikami bioaktywnymi olejów są karotenoidy, tokole, polifenole, fitosterole oraz skwalen. Większość tych składników wykazuje działanie antyoksydacyjne oraz ma inne funkcje biologiczne ważne dla zachowania zdrowia i homeostazy organizmu.Podsumowanie: Związki bioaktywne poprzez swoje właściwości przeciwutleniające mogą zapewniać bioolejom zadowalającą stabilność przechowalniczą. Oprócz poprawy stabilności wykazują one również szereg dobroczynnych oddziaływań po spożyciu takich, jak zapobieganie i łagodzenie wielu chorób. Z tego względu z żywieniowego punktu widzenia ważne jest wprowadzane do diety olejów o wysokim udziale tych składników.Słowa kluczowe: wielonienasycone kwasy tłuszczowe, karotenoidy, tokole, polifenole, fitosterole, skwalen.Abstract Introduction and purpose: Polyunsaturated fatty acids are not synthesized in the human organism and must be provided with the diet. These compounds are important in combating cardiovascular disease, hypertension, obesity and diabetes. The high content of these fatty acids in oils reduces their durability. Stabilization of oil can be provided by antioxidants such as carotenoids, tocols, polyphenols and squalene. They are also very important for the human organism because of the ability to prevent cancer, cardiovascular and neurodegenerative diseases. The aim of the study is to characterize the most important groups of bioactive compounds present in vegetable oils and describe their impact on human health.Brief description of the state of the knowledge: The most important bioactive components of the oil are carotenoids, tocols, polyphenols, phytosterols and squalene. Most of these ingredients has an antioxidant effect, and has other biological functions important for health and body homeostasis.Summary: Bioactive compounds through their antioxidant properties may provide satisfactory storage stability for plant bio-oils. In addition to improving the stability they exhibit a number of beneficial effects in body, such as preventing and mitigating many diseases. Thus, introducing of oils with a high content of these components into the diet is very important from nutritional point of view.Keywords: polyunsaturated fatty acids, carotenoids, tocols, polyphenols, phytosterols, squalene
Związek między profilem składników bioaktywnych a potencjałem antyoksydacyjnym ziarna w zależności od gatunku pszenicy i warunków uprawy = The relationship between profile of bioactive compounds and antioxidant potential of grain depending on the species of wheat and growing conditions
Skrajda Marta Natalia, Konopka Iwona Zofia. Związek między profilem składników bioaktywnych a potencjałem antyoksydacyjnym ziarna w zależności od gatunku pszenicy i warunków uprawy = The relationship between profile of bioactive compounds and antioxidant potential of grain depending on the species of wheat and growing conditions. Journal of Education, Health and Sport. 2016;6(7):309-318. eISSN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.57878http://ojs.ukw.edu.pl/index.php/johs/article/view/3691 The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part B item 755 (23.12.2015).755 Journal of Education, Health and Sport eISSN 2391-8306 7© The Author (s) 2016;This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, PolandOpen Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium,provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License(http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercialuse, distribution and reproduction in any medium, provided the work is properly cited.The authors declare that there is no conflict of interests regarding the publication of this paper.Received: 15.06.2016. Revised 09.07.2016. Accepted: 09.07.2016. ZWIĄZEK MIĘDZY PROFILEM SKŁADNIKÓW BIOAKTYWNYCH A POTENCJAŁEM ANTYOKSYDACYJNYM ZIARNA W ZALEŻNOŚCI OD GATUNKU PSZENICY I WARUNKÓW UPRAWY The relationship between profile of bioactive compounds and antioxidant potential of grain depending on the species of wheat and growing conditions Marta Natalia Skrajda, Iwona Zofia Konopka Katedra Przetwórstwa i Chemii Surowców RoślinnychWydział Nauki o Żywności, Uniwersytet Warmińsko-Mazurski w Olsztynie Uniwersytet Warmińsko-Mazurski w Olsztynie Katedra Przetwórstwa i Chemii Surowców Roślinnych Pl. Cieszyński 1, 10-726 Olsztyn e-mail: [email protected] Streszczenie Wprowadzenie i cel pracy: Ziarno pszenicy, będące głównym surowcem zbożowym na świecie, zawiera szereg małocząsteczkowych związków o właściwościach prozdrowotnych. Celem pracy było scharakteryzowanie głównych związków bioaktywnych pszenicy oraz czynników wpływających na ich akumulację. Skrócony opis stanu wiedzy: Małocząsteczkowe związki bioaktywne stanowią nawet do 2% masy ziarniaka pszenicy. Zalicza się do nich związki fenolowe (głównie kwas ferulowy), sterole (głównie β-sitosterol), tokole (głównie α-tokoferol i β-tokotrienol), karotenoidy (głównie luteina) oraz lipidy fenolowe znane jako alkilorezorcynole. Związki te tworzą potencjał antyoksydacyjny pszenicy, który według danych literaturowych mieści się w zakresie od 1 µmol TE g-1 do 140 µmol TE g-1. Różnice te zależą od odmiany, warunków środowiskowych, miejsca uprawy oraz interakcji między czynnikami środowiskowymi oraz genotypem. Podsumowanie: Na całym świecie podejmowane są próby określenia czynników determinujących koncentrację związków biologicznie aktywnych w ziarnie pszenicy. Uzyskiwane wyniki wciąż są jednak niejednoznaczne. Wskazuje się, że każdy składnik może reagować inaczej na warunki środowiskowe, przez co istnieje możliwość optymalizacji zawartości tych składników poprzez odpowiednią modyfikację warunków uprawy. Słowa kluczowe: pszenica, aktywność antyoksydacyjna, związki bioaktywne, genotyp. Abstract Introduction and aim: Food of plant origin contains a number of compounds with health-promoting properties. Wheat grain, which is the principal raw material grain throughout the world, is a good source of antioxidants. The aim of the study was to characterize the main bioactive compounds wheat and factors affecting their accumulation. Brief description of the state of knowledge: Antioxidants in wheat grains account for as much as 2% of the kernel weight. Both hydrophilic and hydrophobic forms are included in this group. They include phenolic compounds (mainly ferulic acid), sterols (mainly β-sitosterol), tocols (mainly α-tocopherol and β-tocotrienol), carotenoids (mainly lutein) and phenolic lipids known as alkylresorcinols. These compounds provide the antioxidant potential of wheat, which, according to the literature data, falls within the range from 1 µmol TE g-1 to 140 µmol TE g-1. These differences depend on the variety, environmental conditions, place of cultivation and the interactions between environmental factors and the genotype. Summary: All over the world, attempts are being made to identify factors determining the concentration of biologically active compounds in wheat. However, the obtained results are still inconclusive. Researchers have found that each component may react differently to environmental conditions, which allows them to see the possibility for the optimisation of the content of these components through the proper modification of environmental conditions. Key words: wheat, antioxidant activity, phytochemicals, genotype
Phenolic and lipophilic compounds of wheat grain as factors affecting susceptibility to infestation by granary weevil (Sitophilus granarius L.)
The impact of certain groups of polyphenolic (phenolic acids and alkylresorcinols) and lipophilic compounds (total lipids, fatty acids, sterols, tocols and carotenoids) on susceptibility of bread wheat (Triticum aestivum L.) kernels to Sitophilus granarius infestation was studied. In the experiments, six cultivars of spring wheat with comparable protein content, endosperm hardness and overall technological quality were used. Twenty grams of grain were infested by 10 pairs of beetles and stored for one week or eight weeks at 28±2°C and relative humidity of 60%. The intensity of growth and feeding of S. granarius varied significantly in the used cultivars. The antixenosis effect of the studied grain chemicals, observed after one week of infestation, was the lowest for Łagwa cv., which was characterized by the highest total lipid and sterol contents. Other cultivars showed a similar antixenosis effect. For antibiosis effect, the most attractive for S. granarius infestation was Ostka Smolicka cv., which was characterized by the lowest content of total phenolic acids. In contrast, the highest antibiosis effect was found for Arabella and Izera cvs. with the lowest values of sterol content and average values of other determined phytochemicals
Germline SMARCA4 mutations in patients with ovarian small cell carcinoma of hypercalcemic type
Variation in oil quality and content of low molecular lipophilic compounds in chia seed oils
This study was conducted to characterize the lipid fraction of 15 chia seed samples originating from five countries (Argentina, Paraguay, Uganda, Bolivia, and Peru). On average, chia seeds contained 34.5 g oil per 100 g dry-solids, in which the average contents of sterols, tocopherols, squalene, carotenoids, and phenolic compounds were 7,061, 600, 17.7, 2.2, and 9.7 mg/kg of oil, respectively. Alpha-linolenic acid share varied from 54.35% to 60.48%, and was accompanied by declining shares of linoleic, palmitic, oleic, and stearic acid, respectively. Principal component analysis showed that chia oil induction time was positively correlated with tocopherols and phenols, while negatively with quality indices and squalene content
Sustainable Crop Production Protects the Quality of Soil and Plant Raw Materials
Sustainable agriculture is defined in a broad context and includes environmental, economic, and social issues [...
Optimization of Pumpkin Oil Recovery by Using Aqueous Enzymatic Extraction and Comparison of the Quality of the Obtained Oil with the Quality of Cold-Pressed Oil
The study was carried out to optimize pumpkin oil recovery in the process of aqueous extraction preceded by enzymatic maceration of seeds, as well as to compare the quality of the obtained oil to the quality of cold-pressed pumpkin seed oil. Hydrated pulp of hulless pumpkin seeds was macerated using a 2 % (by mass) cocktail of commercial pectinolytic, cellulolytic and proteolytic preparations (Rohapect® UF, Rohament® CL and Colorase® 7089). The optimization procedure utilized response surface methodology based on Box-Behnken plan of experiment. The optimized variables of enzymatic pretreatment were pH, temperature and maceration time. The results showed that the pH value, temperature and maceration time of 4.7, 54 °C and 15.4 h, respectively, were conducive to maximize the oil yield up to 72.64 %. Among these variables, the impact of pH was crucial (above 73 % of determined variation) for oil recovery results. The oil obtained by aqueous enzymatic extraction was richer in sterols, squalene and tocopherols, and only slightly less abundant in carotenoids than the cold-pressed one. However, it had a lower oxidative stability, with induction period shortened by approx. 30 % in relation to the cold-pressed oil
Article Comparison of the Phenolic Compounds, Carotenoids and Tocochromanols Content in Wheat Grain under Organic and Mineral Fertilization Regimes
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