Determination of physical and thermal properties as harvesting indices for mango | |
| Author | Chusak Chavapradit |
| Call Number | AIT Thesis no.AE-88-18 |
| Subject(s) | Mango--Thermal properties Fruit--Harvesting |
| Note | A Thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | A study was made to relate selected physical and thermal properties of " Nam Dorkmai " mango during the growth season in 1988. The full maturity of "Nam Dorkmai " mango occurred in the thirteenth week after fruit set. At this stage of growth the specific gravity of the fruit was 1. 03 to 1. 04 and geometric mean dimensions of the mature fruit was 101. 62 mm. Other specific physical properties such as we ight, volume, color and bloom , moisture content, projected area and front view radius of curvature had values for maturity indices ranging from 336.7 to 346.4 gm, 325.6 to 332.95 ml, 1380.8 to 1384.9 mV, 78.8 to 80.4 %(wb ) 338.0 to 381.9 sq.cm and 75 .41 to 86.06 mm for thirteen to four teen weeks after fruit set respectively. The thermal properties such as specific heat, thermal conductivity and diffusity which served as maturity and handling criteria for "Nam Dorkmai " mango were 3. 7 4 to 3. 40 kJ /kg-°K, 0. 52 to 0 . 53 W/m - °K and 1.37*10 - sq.m/sec respectively. The Chlorophyll contents at maturity of fruit were 1.89 to 2.19 ppm respectively. A method to estimate time in weeks before harvest was developed based on the relationship between time of fruit growth and the geometric mean dimension. The relationships between the time of maturity and physical, thermal and chemical properties of mango could be used to predict specific values of the properties, at the estimated maturity stage of fruit. |
| Year | 1988 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Athapol Noomhorm ;Illangantileke, Sarath G. |
| Examination Committee(s) | Jindal, Vinod Kumar |
| Scholarship Donor(s) | Government of New Zealand |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1988 |