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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Evaluation of drying methods on osmotically dehydrated cranberries

Beaudry, Claudia. January 2001 (has links)
Since cranberry skin is thick and has low porosity, skin pretreatments were considered before drying in order to facilitate water diffusion. Mechanical and chemical pretreatments were considered, by cutting the fruits in half, by making pin holes in each cranberry, and by dipping the fruits in an alkaline solution. / A second pretreatment seemed necessary when drying cranberries in order to reduce their tartness. Cranberries were osmotically dehydrated, by immersing them in osmotic solutions of sucrose or high fructose corn syrup. / Once the pretreatment conditions were selected, four drying methods were tested on the pretreated cranberries. These methods included hot air drying, freeze-drying, vacuum drying and a combination of hot air and microwaves. A quality evaluation of the dried samples was also performed, including evaluation of overall appearance, taste, color, water activity, rehydration capacity and texture. (Abstract shortened by UMI.)
12

Cultural methods for dehydrating onion production in Quebec, with particular reference to the fluid drilling technique

Crévier, Hélène A. January 1986 (has links)
No description available.
13

Heating and drying aspects of grain immersed in a hot particulate medium

Sibley, Kevin John. January 1984 (has links)
No description available.
14

Microwave power control strategies on the drying process

Cheng, Wei Min, 1964- January 2004 (has links)
The current study was conducted for evaluating the effects of two different strategies viz., phase control and cycle control, on the microwave/air drying process. A phase-controlled electrical power regulator was developed and connected in series with the original cycle-controlled power regulator of an existing domestic microwave oven. The microwave oven was further modified such that combined microwave and convectional drying can be accommodated. / The system performance was evaluated. It was observed that phase-controlled power regulator could be successfully used for quasi-continuous (fast-switching) power regulation with the maximization of power efficiency. The degradation of output microwave power was recorded and the nonuniform distribution of microwave field in the cavity was also verified. / The effects of phase control and cycle control were evaluated through combined microwave and convective drying of potato samples. Results showed that different power control methods had different impacts on drying kinetics and product quality. In both drying modes, the drying time increased with the decrease of microwave power density and the increase of air velocity. The drying rates of cycle-controlled drying are significantly higher than those of phase-controlled drying. In terms of rehydration capacity the phase-controlled drying mode produced better results. The product colour and sensory attributes were independent of the power control methods.
15

The rehydration of Blue Lake Beans as influenced by treatments preceding dehydration

Pettit, Lynne Archer 28 May 1953 (has links)
Graduation date: 1954
16

Cultural methods for dehydrating onion production in Quebec, with particular reference to the fluid drilling technique

Crévier, Hélène A. January 1986 (has links)
No description available.
17

Heating and drying aspects of grain immersed in a hot particulate medium

Sibley, Kevin John. January 1984 (has links)
No description available.
18

Drying characteristics of corn in a microwave field with a surface-wave applicator

Shivhare, Uma Shanker January 1991 (has links)
No description available.
19

Evaluation of drying methods on osmotically dehydrated cranberries

Beaudry, Claudia. January 2001 (has links)
No description available.
20

Microwavevacuum and osmotic drying of cranberries

Sunjka, Predrag S. January 2003 (has links)
No description available.

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