UPM Institutional Repository

Physico-chemical and structural changes of red-fleshed dragon fruit (Hylocereus polyrhizus) during fruit development


Jamaludin, Nur Adilla and Ding, Phebe and Abdul Hamid, Azizah (2011) Physico-chemical and structural changes of red-fleshed dragon fruit (Hylocereus polyrhizus) during fruit development. Journal of the Science of Food and Agriculture, 91 (2). pp. 278-285. ISSN 0022-5142; ESSN: 1097-0010


BACKGROUND: Determination of physico-chemical (weight, length, diameter, stomatal density, respiration rate, colour, soluble solids concentration, titratable acidity, chlorophyll and betacyanin content) and structural changes of red-fleshed dragon fruit (Hylocereus polyrhizus (Weber) Britton & Rose) was carried out from 5 to 35 days after pollination (DAP) in order to explain their growth, development, maturations and ripening stages. RESULTS: Fruit growth of red-fleshed dragon fruit followed a sigmoid growth pattern. Significant changes in colour were obtained in both peel and pulp as DAP progressed, which were indicated by reductions of L*, C* and h° values as both changed from green to red-violet colour at ripening. Red-violet betacyanin was manifested earlier in pulp at 25 DAP, followed by peel 4-5 days later, and finally both peel and pulp turned full red-violet by 30 DAP. There was a significant increase in soluble solids concentration and titratable acidity with the continuous increase in betacyanin content as DAP progressed. CONCLUSION: The physico-chemical and betacyanin accumulation of red-fleshed dragon fruit changed as it developed, matured and ripened which coincided with structural changes.

Download File

PDF (Abstract)

Download (85kB) | Preview

Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Faculty of Food Science and Technology
DOI Number: https://doi.org/10.1002/jsfa.4182
Publisher: Society of Chemical Industry
Keywords: Postharvest; Colour; Cellular structure; Betacyanin
Depositing User: Nur Farahin Ramli
Date Deposited: 28 Nov 2013 14:05
Last Modified: 16 May 2017 09:47
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1002/jsfa.4182
URI: http://psasir.upm.edu.my/id/eprint/23693
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item