Changes in Skin Colour and other Related Quality Characteristics of 'B10' Carambola (Averrhoa Carambola L.) at Different Stages of Maturity
A study was conducted on changes in skin colour and other related quality characteristics of 'B10' carambola (Averrhoa carambola L.) at different stages of maturity. In Experiment I the carambola were harvested at different stages of maturity beginning from 57 to 93 days after fruit-set...
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| Format: | Thesis |
| Language: | English English |
| Published: |
1998
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/10418/1/FP_1998_8_A.pdf |
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| Summary: | A study was conducted on changes in skin colour and other related quality
characteristics of 'B10' carambola (Averrhoa carambola L.) at different stages of
maturity. In Experiment I the carambola were harvested at different stages of
maturity beginning from 57 to 93 days after fruit-set with three day intervals between
each harvest. Skin colour (L*, a*, b*, C* and h' values), chlorophyll and carotenoid
contents of the fruit were determined at each stage of maturity. In Experiment II
other related quality characteristics such as flesh firmness, soluble solids
concentration, sugar (sucrose, fructose, and glucose), ascorbic acid and organic acid
(malic, citric and oxalic) contents at nine colour indices (as had been categorised in
Experiment I) were also determined. Respiration rate and ethylene production of
carambola were determined to study the climacteric nature of the fruit. Each of the
experiment was conducted using a completely randomised design and the data
obtained were analysed using analysis of variance and Duncan Multiple Range Test. Simple regression model was used to determine relationship between maturity stages
and skin colour (Experiment I) and relationship between colour indices and other
related quality characteristics (Experiment IT). Correlations among parameters in each
experiment were obtained by means of Pearson's correlation matrix. |
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