Effect of Fertilization, Postharvest Handling and Blanching Temperature on the Drained Weight of Canned Summer Squash |
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| Authors: | W C HURST V N M RAO D GRANBERRY G SOCHA P E KOEHLER |
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| Affiliation: | Authors Hurst, Rao, Socha, and Koahler are with the Food Science Division, The Univ. of Georgia, Athens, GA 30602.;Author Granberry is affiliated with the Horticulture Dept. and is located at the Extension Research Center, P.O. Box 189, Attapulgus, GA 31715. |
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| Abstract: | There was no apparent effect on drained weight or firmness when three rates of calcium fertilization and two rates of potassium fertilization were applied to a test planting from which two harvests of raw summer squash were canned. However, high Ca (L2) decreased dry matter and increased structural carbohydrates and tissue Ca in the canned product. Precooling increased drained weight and dry matter, but drastically reduced firmness of the canned product. Noncooled canned squash had lower drained weights and pH, but greater firmness and higher water soluble pectin and cellulose content. Blanching at 99°C increased drained weight; blanching at 88°C decreased drained weight, but increased calgonsoluble pectin content. |
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