1 AIT Asian Institute of Technology

Precooling effects on the quality of selected vegetables during storage

AuthorMalee Kitvekin
Call NumberAIT Thesis no.AE-85-23
Subject(s)Vegetables--Storage
NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development
PublisherAsian Institute of Technology
AbstractIn this study, the effects of precooling on the quality of selected vegetables such as babycorn, chilli and yard long bean were studies at Thailand Institute of Science and Technology Research during January-April 1985. The precooling methods consisted of conventional room, forced-air cooling and hydrocooling. The quality criteria monitored during storage were moisture content, weight loss, texture and appearance by rating (scoring) the color and freshness of the commodities studied. Total soluble solids for corn were also determined and mold development in chilli was visually assessed. Hydrocooling proved to be an effective means for rapid cooling and required only 2 to 9 minutes depending on the type of vegetables. However it adversely affected the quality of babycorn and chilli. Browning was observed to occure rapidly on babycorn while the chilli became more susceptible to mold development. On the other hand, hydrocooling had good effects on the quality of yard long bean indicating more freshness than other precooling methods. Thus forced-air cooling was a preferred method for babycorn and chilii.
Year1985
TypeThesis
SchoolSchool of Environment, Resources, and Development (SERD)
DepartmentOther Field of Studies (No Department)
Academic Program/FoSAgricultural and Food Engineering (AE)
Chairperson(s)Jindal, Vinod Kumar
Examination Committee(s)Illangantileke, Sarath G. ;Gupta, Chandra P.
Scholarship Donor(s)The Government of Australia
DegreeThesis (M.Sc.) - Asian Institute of Technology, 1985


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