13 research outputs found

    Effect of preservation methods on some properties of fruit and vegetables being in retail trade

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    Badano popularne warzywa i owoce: papryka czerwona, pomidor, pieczarka, broku艂, 艣liwki oraz ich przetwory: susz (艣liwka, pieczarka), mro偶onki (艣liwka, broku艂y), marynaty (艣liwka, papryka czerwona), koncentraty (powid艂a 艣liwkowe, pomidorowy). W warzywach i 艣wie偶ych 艣liwkach oznaczano zawarto艣膰 witaminy C , cukr贸w redukuj膮cych i og贸艂em oraz kwasowo艣膰 og贸ln膮 4-krotnie w miesi臋cznych odst臋pach. Suszenie powodowa艂o najwy偶sze straty wit. C, natomiast zastosowanie niskiej temperatury (-22掳C) okaza艂o si臋 najkorzystniejsze. Ilo艣膰 sacharyd贸w we wszystkich badanych przetworach by艂a wy偶sza w por贸wnaniu do materia艂u 艣wie偶ego. Marynaty i koncentraty z warzyw zawiera艂y podobn膮 ilo艣膰 sacharyd贸w jak owoce 艣wie偶e (艣liwka). Marynowanie podnosi艂o kwasowo艣膰 og贸ln膮 warzyw i owoc贸w. Najmniejsze zmiany stwierdzono utrwalaj膮c 偶ywno艣膰 w niskich temperaturach.Such popular fruit and vegetables as red pepper, tomato, mushrooms, broccoli, plums, and their products: dried (plum, mushroom), frozen food (plums, broccoli), pickles (plum, red pepper), concentrates (plum jam, tomato) were studied. A content of vitamin C, total reducing sugars and acidity (4 times in monthly intervals) were determined in vegetables and fresh plums. Drying resulted in the highest loss of vitamin C, while the use of low temperature (22掳C) proved to be the best method. A quantity of saccharides in all products tested was higher in comparison to fresh material. Marinades and vegetable concentrates contained a similar amount of saccharides as fresh fruit (plum). Marinating increased acidity of fruit and vegetables. The smallest changes were found when food were preserved at low temperatures

    Fries quality as a dependency of potato storage technology

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    Przeprowadzono badania oparte o trzyletnie do艣wiadczenie (2011-2013), kt贸rych celem by艂o okre艣lenie wp艂ywu uwarunkowa艅 genetycznych ziemniaka i oddzia艂ywania r贸偶nych metod przechowywania na zawarto艣膰 sk艂adnik贸w chemicznych maj膮cych wp艂yw na w艂a艣ciwo艣ci technologiczne bulw. Jako艣膰 frytek determinowana by艂a zawarto艣ci膮 suchej masy, skrobi, cukr贸w redukuj膮cych i og贸艂em oraz sk艂onno艣ci膮 do ciemnienia mi膮偶szu bulw. Po przechowaniu nast膮pi艂o obni偶enie oceny og贸lnej jako艣ci frytek spowodowane wzrostem kumulacji cukr贸w w bulwach oraz pogorszeniem ich barwy. Zastosowany zabieg rekondycjonowania poprawia艂 jako艣膰 bulw w zakresie parametr贸w maj膮cych wp艂yw na produkty sma偶one. Frytki wykonane z tych bulw by艂y lepszej jako艣ci. Zawarto艣膰 monosacharyd贸w i sk艂onno艣膰 do ciemnienia bulw wykaza艂y najmniejsz膮 stabilno艣膰.Based on three years of experimental study (2011-2013), the effect of potato genetics and impact of different storage methods on chemicals content affecting technological properties of tubers were determined. The quality of French fries was determined by the content of starch, reducing and total sugars and the tendency to darken flesh tubers. The general quality of French fries decreased after storage. It was caused by the increase of sugars accumulation in tubers and worsening of their color. The applied reconditioning procedure improved the quality of tubers in a range of parameters affecting fried products. French fries made from these tubers were of better quality. The content of monosaccharides and tendency to darken flesh tubers showed the lowest stability

    Storage durability and qualitative features' stability of selected potato cultivars of different application

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    Wst膮pienie Polski do UE da艂o wi臋ksze mo偶liwo艣ci korzystania z odmian wyhodowanych w innych krajach. Uzasadnione s膮 wi臋c badania maj膮ce na celu sprawdzenie stabilno艣ci cech jako艣ciowych wybranych odmian ziemniaka uprawianych w Polsce. W badaniach u偶yto 8 odmian ziemniaka pochodz膮cych od producenta Norika Polska SA o r贸偶nej przydatno艣ci i d艂ugo艣ci okresu wegetacji: Gala, Karlena, Lambada, Pirol, Karatop, Kiebitz, Molli, Albatros. Badania prowadzono przez 3 lata (2009-2011). Celem podj臋tych bada艅 by艂o okre艣lenie trwa艂o艣ci przechowalniczej oraz stabilno艣ci wybranych parametr贸w jako艣ciowych odmian ziemniak贸w przeznaczonych na r贸偶ne kierunki u偶ytkowania. Wybrane do bada艅 odmiany charakteryzowa艂y si臋 dobr膮 trwa艂o艣ci膮 przechowalnicz膮, gdy偶 艣rednie straty 艣wie偶ej masy dla tych odmian by艂y na poziomie tylko 4,5%. Odmiany r贸偶ni艂y si臋 istotnie mi臋dzy sob膮 zawarto艣ci膮 suchej masy i skrobi. Wszystkie odmiany spe艂nia艂y kryteria jako艣ci w zakresie suchej masy i skrobi w zale偶no艣ci od kierunku ich u偶ytkowania zar贸wno po zbiorze jak i po przechowywaniu. Uprawa odmian zagranicznych w warunkach Polski nie wp艂ywa w znacznym stopniu na pogorszenie badanych parametr贸w jako艣ci bulw. Rzeczywiste straty suchej masy i skrobi po przechowywaniu s膮 wy偶sze odpowiednio o 3,9 pkt% i 3,6 pkt%.Poland accession to the EU has given more opportunities to use potato cultivars grown in other countries. Hence the need for research studies to examine quality features of selected potato cultivars being grown in Poland has become evident. For research purposes 8 potato cultivars produced by Norika Polska SA of different possible uses and the length of vegetation period were used: Gala, Karlena, Lambada, Pirol, Karatop, Kiebitz, Malio and Albatros. The research study was conducted over 3 years (2009-2011). The objective of this study was to determine the storage durability as well as the stability of selected quality features of potato cultivars of different application. The cultivars selected for this study were characterized by good storage stability as the average natural losses amounted only to 4.5%. The cultivars differed significantly in dry matter and starch content. All cultivars met the quality criteria regarding dry matter and starch depending on their application type both after harvest and after storage. Growing foreign cultivars in Polish environmental conditions does not impact significantly on quality features of tubers examined during the study. The real loss of dry matter and starch after the storage is 3.9 and 3.6 percentage points higher, respectively

    Response of onion (Allium cepa L.) to the method of seaweed biostimulant application

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    Among methods for stimulation of plant growth an essential role can be played by seaweed biostimulants. The aim of the study was to assess the response of onion to the method of application of the seaweed biostimulant Kelpak SL. Doses of the seaweed extract applied from the three-leaf stage amounted to 3, 3 + 2, 3 + 2 + 2 dm3 ha-1, and from the four-leaf stage 2, 2 + 2, 2 + 2 + 2 dm3 ha-1, for a single, double and triple application, respectively. The biostimulant applied from the three-leaf stage increased the chlorophyll index after double or triple application, whereas applied from the four-leaf stage, also after a single application. The highest increases in the fresh weight yield of bulbs as well as fresh weight of roots resulted from the triple application of the biostimulant from the three- or four-leaf stages. Each dm3 of the biostimulant caused an increase in the fresh weight yield of bulbs by 0.76 t ha-1, and each additional application resulted in an increase in yield by 1.76 t ha-1

    Effect of growing location and storage on chosen culinary properties of three potato cultivars

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    Trzyletnie do艣wiadczenia polowe prowadzono r贸wnocze艣nie w Polsce (region kujawsko-pomorski) i w Niemczech (Dolna Saksonia). Celem podj臋tych bada艅 by艂o okre艣lenie wp艂ywu miejsca uprawy na smakowito艣膰 i barw臋 bulw trzech odmian ziemniaka bezpo艣rednio po zbiorze i po sze艣ciu miesi膮cach przechowywania w temperaturze +4掳C i wilgotno艣ci wzgl臋dnej powietrza 95%. Bulwy badanych odmian r贸偶ni艂y si臋 istotnie mi臋dzy sob膮 barw膮 i smakowito艣ci膮 mi膮偶szu bulw po ugotowaniu. Niezale偶nie od miejsca uprawy i przechowywania najlepsz膮 smakowito艣ci膮 wyr贸偶nia艂a si臋 odmiana Mors a barw膮 Satina. W prowadzonych badaniach miejsce uprawy mia艂o istotne znaczenie na barw臋 mi膮偶szu bulw ugotowanych. Istotnie wy偶sz膮 ocen臋 - na korzy艣膰 uprawy w Niemczech - uzyska艂y odmiany Lena i Mors i wynios艂a ona odpowiednio 3,9 i 4,3 pkt bezpo艣rednio po zbiorze oraz 3,6 i 4,0 pkt po przechowywaniu. D艂ugotrwa艂y okres przechowywania powodowa艂 pogorszenie si臋 barwy mi膮偶sz bulw w stosunku do tej, kt贸r膮 odmiany charakteryzowa艂y si臋 w momencie uzyskania pe艂nej dojrza艂o艣ci.Three-year field experiments were performed simultaneously in Poland (Kuyavian-Pomeranian region) and Germany (Lower Saxony). The aim of this study was to determine the effect of cultivation site on selected cooking tubers immediately after harvest and after six months of storage at +4掳C and relative humidity of 95%. Tubers of studied cultivars differed significantly in color and palatability of cooked tuber flesh. Irrespectively of cultivation site and storage Satina of palatability and Mors of color appeared to be the best cultivars. In this study the location had a significant influence on color of cooked tuber flesh. Significantly higher scores amounted to 3.9 and 4.3 points directly after harvest, and a 3.6 and 4.0 points after storage received cultivars Lena and Mors cultivated in Germany. Long storage time caused worsening of tuber flesh color in relation to that characterized at the moment of full maturity

    Technological features of some winter wheat varieties cultivated in Poland and Great Britain

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    Odmiany pszenicy ozimej uprawiano odpowiednio w Wielkiej Brytanii: Alchemy, Ascot, Oakley i Solstice oraz w Polsce: Muszelka, Batuta i Bogatka. Badania prowadzono w latach 2009-2011 i dotyczy艂y one okre艣lenia plonu ziarna i jego cech jako艣ciowych. Dokonano oceny m膮ki, zawarto艣膰 bia艂ka i wybranych cech technologicznych (liczby opadania, testu Zeleny'ego, zawarto艣ci glutenu mokrego). Stwierdzono, 偶e brytyjskie odmiany pszenicy uzyska艂y wy偶sze plony ziarna oraz, 偶e wszystkie badane odmiany pszenicy ozimej r贸偶ni艂y si臋 parametrami technologicznymi.Winter wheat varieties (British: Alchemy, Ascot, Oakley and Solstice, and Polish: Muszelka, Batuta and Bogatka) were cultivated in field trials in both countries, respectively. Crops yields in 2009-2011 were evaluated and grain and flour samples were analysed for protein content and some technological features (falling number, Zeleny test, wet gluten content). It was found that the British winter wheat varieties yielded better, and that all the other parameters strongly differentiated among the varieties

    Influence of storage on darkening processes in potato tubers {Solanum tuberosum L.) and their health properties

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    Badania przeprowadzone na dw贸ch odmianach ziemniak贸w Augusta i Victoria uprawianych w latach 2011-2012 w Stacji Badawczej w Moche艂ku wykaza艂y istotne obni偶enie zawarto艣ci suchej masy, skrobi, kwasu askorbinowego, zawi膮zk贸w fenolowych og贸艂em oraz pojemno艣ci anty oksydacyjnej bulw po przechowywaniu, przy r贸wnoczesnym zwi臋kszeniu sk艂onno艣ci do ciemnienia. Odporniejsza na straty podczas przechowywania okaza艂a si臋 odmiana Augusta. Pomimo zmian podczas przechowywania obie odmiany nadal odznacza艂y si臋 dobr膮 jako艣ci膮 i nadawa艂y si臋 zar贸wno do konsumpcji jak i produkcji wyrob贸w uszlachetnionych.Research on two potato cvs Augusta and Victoria at Experimental Station in Moche艂ek was conducted in 2011-2012. Storage time of 6 months significantly decreased contents of dry matter, starch, ascorbic acid, total polyphenols, and antioxidant capacity of tubers, but simultaneously increased the susceptibility to darkening processes. The cv. Augusta was more resistant to losses during storage. Nevertheless, both investigated cvs were characterized by good quality and were appropriate for consumption as well as for production of refined products

    Influence of storage time of potato tubers bought in Bydgoszcz commercial network on changes in quality characteristics

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    Celem bada艅 by艂o okre艣lenie zmian zawarto艣ci bia艂ka og贸lnego oraz azotan贸w(V) w bulwach ziemniaka zakupionych w punktach handlowych i przechowywanych 4 miesi膮ce w piwnicy. Stwierdzono, 偶e przechowywanie bulw istotnie zmodyfikowa艂o zawarto艣膰 bia艂ka og贸lnego w badanych bulwach i wp艂yn臋艂o istotnie na akumulacj臋 azotan贸w(V), kt贸ra przekroczy艂a dopuszczalny limit.The determination of changes of protein and nitrates'(V) contents in potato tubers purchased at retail shops and stored for four months in cellars were the aim of research. It was found that the storage time modified significantly the contents of protein in tested tubers and also affected accumulation of nitrates(V) in such a way that the observed values exceeded the permissible limit

    Ocena bezpiecze艅stwa w贸d butelkowanych oraz z lokalnych uj臋膰

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    The aim of research was to determine the nitrates and chlorides content in mineral and spring water and also the tap water from the Municipal Water and Sewage Service (MWiK) in Bydgoszcz and the water form a well located in the Lower Vistula River. The water samples did not exceed the norms of nitrates and chlorides content (the highest amount of them was in the tap water). Nevertheless, a high level of maximal content of nitrates in spring waters was observed, including one recommended by the Mother and Child Health Institute.Celem prowadzonych bada艅 by艂o okre艣lenie zawarto艣ci azotan贸w N03- i chlork贸w Cl- w贸d mineralnych i 藕r贸dlanych, a tak偶e wody wodoci膮gowej z MWiK w Bydgoszczy i uj臋cia w艂asnego - studni na terenie Doliny Dolnej Wis艂y. Badane pr贸by wody nie przekracza艂y norm pod wzgl臋dem zawarto艣ci azotan贸w i chlork贸w, kt贸rych by艂o najwi臋cej w wodzie wodoci膮gowej. Niemniej jednak zanotowano wysoki poziom dopuszczalnej zawarto艣ci azotan贸w w wodach 藕r贸dlanych, w tym jednej polecanej przez Instytut Zdrowia Matki i Dziecka

    Starch properties used in the determination of the potato technological value

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    Przeprowadzono badania oparte o trzyletnie do艣wiadczenie, kt贸rych celem by艂o okre艣lenie wp艂ywu uwarunkowa艅 genetycznych oraz terminu oceny na wybrane parametry jako艣ciowe skrobi oraz jako艣膰 frytek i chips贸w. Parametrami skrobi, kt贸re wykaza艂y najmniejsz膮 stabilno艣膰 by艂y kwasowo艣膰 i zawarto艣膰 wody po rozmro偶eniu krochmalu. Najlepszej jako艣ci produkty uszlachetnione otrzymano z odmiany Kiebitz. Okres przechowywania wp艂ywa艂 na pogorszenie jako艣ci frytek i chips贸w niezale偶nie od odmiany.Based on three years of experience, the study was carried out dealing with the determination of effect of genetics and evaluation date on a selected starch parameters and a quality of french fries and chips. The starch parameters which show the smallest stability are acidity and moisture content alter starch thawing. The best quality fried products were prepared from cultivar Kiebilz. A storage period influenced the quality deterioration of french fries and potato chips irrespective of cultivar
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