10 research outputs found

    Wp艂yw warunk贸w suszenia warzyw li艣ciastych na przebieg procesu i cechy jako艣ciowe suszu

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    Badano wp艂yw temperatury i stopnia rozdrobnienia na przebieg procesu suszenia kapusty bia艂ej oraz cechy jako艣ciowe suszu. Warunki suszenia oceniano z punktu widzenia maksymalizacji wska藕nik贸w stopnia rehydratacji, punktowej oceny sensorycznej i zawarto艣ci witaminy 小 w suszu oraz minimalizacji czasu suszenia.Late variety of cabbage was dried at 65, 75 and 85掳C. The content of ascorbic acid in the dried material was 13.40, 9.40 and 6.20 mg% (in raw material 31.48 mg%), mean sensorial assessment 3.95, 3.60 and 3.05 points, rehydration rate 744.2, 671.2 and 577.2 ml/100g and mean assessment index of the qualitative characters tested 1.00, 0.84 and 0.67, respectively. With disintegration of 3 - 9 mm the index was approximately similar, however being worse with 12 mm thick chips. From the range of 3 to 9 mm disintegration recommended should be that of 3 mm because of the shortest time of its drying. The results of the tests would indicate that leafy vegetables should be dried at temperature not exceeding 65掳C and disintegrating the raw material into 3 mm thick chips

    Termodynamiczne mo偶liwo艣ci uzyskania optymalnej wilgotno艣ci wzgl臋dnej powietrza w ch艂odni

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    Na podstawie analizy przemian powietrza obiegowego w ch艂odni wyznaczono graniczne temperatury ch艂odzenia, dla uzyskania optymalnej wilgotno艣ci wzgl臋dnej podczas przechowywania produkt贸w ulegaj膮cych intensywnej transpiracji.Relative air humidity in a cold store depends on the storing temperature and air temperature after cooling down in a cooler. The dependences have been given in form of equations, in the Table and in the Diagram. Optimum relative air humidity can be attained for each storing temperature by selecting proper temperature at the cooler outlet. Satisfactory relative air humidity for storing fruit and vegetables can be attained after adequate limitation of the difference between the storing temperature assumed and that after cooling down

    Influence of temperature and variety on the thermal properties of apples

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