Graduate Thesis Or Dissertation

 

The effect of dextrose upon weight and volume in the manufacture of maraschino-type cherries Public Deposited

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  • Ten, twenty, and thirty percent of dextrose were used in place of sucrose to preserve the Maraschino-type cherries because of the expectation that the smaller sized molecules would enter the cherry tissue more readily and thus increase the weight and volume of the fruit. Other samples, sucrose and percent dextrose replacement, were tested with the pH of the syrup controlled at 3.0. Both cold and hot processes were used, and samples were tested every two days during the concentrating period for drained weight of the cherries; volume of the cherries; pH, inversion, and degree Brix of the syrup. The commercial product, with the trade name "glucose", was also tested in another series of samples. Owing to its insolubility at low temperatures only the hot process was used. The results show that dextrose increases the weight of cherries in the cold process, whereas the difference in weight gain is not as noticeable in the hot process. "Glucose" gives approximately the same results as does dextrose. High inversion of the syrup of a sample does not indicate a comparable weight gain in the cherries because the monosaccharides are concentrated in the fruit tissue. By controlling the pH of the syrup at 3.0 no advantage in increasing the weight of the cherries is gained.
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