Abstract
Two sweet corn varieties, c.v. Mellogold and Trail Blazer, were harvested to provide a range from immature to over-mature. Rheological and textural parameters were evaluated, in comparison with other objective tests, to determine their relative merit in assessing sweet corn maturity. The rheological parameters were obtained for fresh and frozen corn slurries by applying power-law flow models to data obtained using the Haake Rotovisko and Brookfield viscometers. The consistency coefficients and apparent viscosities showed poor correlations with time from silking to harvest which was used as the index of maturity. The flow behavior index, obtained by the Rotovisko, was highly correlated with sweet corn maturity (r = 0.92). The corn slurries decreased in pseudoplasticity as maturity advanced. The Rotovisko flow behavior index was almost equal to vacuum oven moisture content, refractive index and specific gravity as a maturity index and was superior to succulometer volumes and other tests using the Ottawa Texture Measuring System.
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Schedule a callMore From: Canadian Institute of Food Science and Technology Journal/Journal de L'Institut Canadien de Science et Technologie Alimentaire
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