| Author | Dwivedi, Mritunjay |
| Call Number | AIT Thesis no. AE-92-14 |
| Subject(s) | Fruit--Drying
|
| Note | A thesis submitted in partial fulfillment of the requirements for
the Degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The effect of sugars such as sucrose, sorbitol and glucose at five
concentrations, shapes of the papaya, pretreatments, sugar to fruit ratio,
calcium con centration and agitation on t h e osmotic kinetics during dehydration
was investigated. The parameters determined were water loss, sugar gain, weight
reduction and volume change of papaya. Drying characteristics for the
dehydration of osmosed and nonosmosed papaya were studied taking three
shapes. The quality aspects were investigated by subjecting the osmosed
samples to four drying treatments. Texture, color, volume shrinkage, final
moisture content and rehydration ratio for the dried samples were determined.
Storability test was performed to study the effect of four storage
conditions on the change in weight, texture an d color of the dehydrated papaya
for 25 days of storage. Refrigerated temperature was found to be best with
regard to the accept able appearance. Results obtained from this study revealed
that the sucrose/sorbitol combination gave the highest reduction in moisture
(78.65 %) and maximum sugar gain of 25.35 gram per 100 gram of fresh fruit.
Sucrose solution was accepted where less sugar gain with optimum water loss
was needed. Product dehydrated with glucose solution exhibited t h e lowest
reduction in moisture and highest discoloration. Mathematical relationships of
moisture loss, weight reduction and sugar gain with time and temperature were
established. |
| Year | 1992 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Illangantileke, Sarath G. |
| Examination Committee(s) | Jindal, Vinod Kumar ;Athapol Noomhorm |
| Scholarship Donor(s) | The Norwegian Government ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1992 |