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Optimization of Process Variables for Osmo- freeze drying of Strawberry Slices Using Response Surface Methodology CIGR Journal
KUMAR, VISHAL.
The production of high-quality Osmo freeze-dried strawberry slices was studied by response surface methodology. The osmotic treatment and experiment were conducted according to Box-Bohnken Design. The low and high levels of the process variables were 40% (w/w) and 60% (w/w) for sucrose concentration of osmotic solution; 2 and 4 mm for slice thickness and - 10 and -30 0C for operating temperatures in freeze dryer. Responses studied comprised final moisture content (M), colour Index (L), water activity (aw), rehydration ratio (RR) and overall acceptability (Oa). It was found that effects of all the process variables were significant on all responses. Optimum conditions (desirability = 0.692) obtained by numerical optimization were 51% sucrose concentration;...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Osmotic; Freeze; Rehydration; Hardness; Colour; Water activity.
Ano: 2020 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5587
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Cryopreservation at -75 °C of Agaricus subrufescens on wheat grains with sucrose BJM
Zaghi Júnior,Lienine Luiz; Lopes,Ana Daniela; Cordeiro,Fábio Aparecido; Colla,Itaruã Machri; Bertéli,Míria Benetati Delgado; Valle,Juliana Silveira do; Linde,Giani Andrea; Colauto,Nelson Barros.
Abstract Agaricus subrufescens is a basidiomycete which is studied because of its medicinal and gastronomic importance; however, less attention has been paid to its preservation. This study aimed to evaluate the effect of sucrose addition to substrate and cryotube on the viability of Agaricus subrufescens cryopreserved at -20 °C and at -75 °C for one and two years. Zero, 10% or 20% sucrose was added to potato dextrose agar or wheat grain. The mycelia were cryopreserved in the absence of cryoprotectant or with sucrose solutions at 15%, 30% or 45%. After one or two years at -75 °C or at -20 °C, mycelia were thawed and evaluated about viability, initial time of growth, colony diameter and genomic stability. Cryopreservation at -20 °C is not effective to keep...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Preservation; Freeze; Cereal grain; Monosaccharide; Agaricus blazei.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000200370
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Valuing Catastrophic Citrus Losses AgEcon
Adams, Damian C.; Kilmer, Richard L.; Moss, Charles B.; Schmitz, Andrew.
Courts are often required to estimate changes in welfare to agricultural operations from catastrophic events. For example, courts must assign damages in lawsuits, such as with pesticide drift cases, or determine "just compensation" when the government takes private land for public use, as with the removal of dairy farms from environmentally sensitive land or destruction of canker-contaminated citrus trees. In economics, the traditional method of quantifying producer losses is estimating changes in producer welfare, but courts rarely use this method. Instead, they turn to substitute valuation methods that may not fully capture welfare changes, such as changes in land value, tree replacement value, and total revenue. This study examines various measures for...
Tipo: Working or Discussion Paper Palavras-chave: Citrus; Perennial crops; Catastrophic loss; Damages; Freeze; Crop Production/Industries.
Ano: 2004 URL: http://purl.umn.edu/15673
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Valuing Catastrophic Losses for Perennial Agricultural Crops AgEcon
Adams, Damian C.; Kilmer, Richard L.; Moss, Charles B.; Schmitz, Andrew.
Courts are often required to estimate changes in welfare to agricultural operations from catastrophic events. For example, courts must assign damages in lawsuits, such as with pesticide drift cases, or determine 'just compensation' when the government takes private land for public use, as with the removal of dairy farms from environmentally sensitive land or destruction of canker-contaminated citrus trees. In economics, the traditional method of estimating changes in producer welfare is the computation of lost producer surplus, but courts rarely use this method. Instead, they turn to substitute valuation methods that may not fully capture welfare change, such as changes in land value, tree replacement value, and total revenue. This study examines various...
Tipo: Working or Discussion Paper Palavras-chave: Citrus; Perennial crops; Catastrophic loss; Damages; Freeze; Crop Production/Industries.
Ano: 2003 URL: http://purl.umn.edu/15684
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