Physicochemical quality, antioxidant compounds and activity of MD-2 pineapple fruit at five ripening stages

• Main Authors: Ding, Phebe, S., Syazwani
• Format: Article
• Language: English
• Published: Faculty of Food Science and Technology, Universiti Putra Malaysia 2016
• Online Access: http://psasir.upm.edu.my/id/eprint/29351/1/%2814%29.pdf; http://psasir.upm.edu.my/id/eprint/29351/; http://www.ifrj.upm.edu.my/23%20(02)%202016/(14).pdf

Although Malaysia is one of the important pineapple fruit producing and exporting country, the production of MD-2 pineapple fruit only started in 2009. Pineapple fruit has been harvested at different ripening stages for different markets. The information on Malaysian grown MD-2 pineapple fruit quality is lacking. Therefore this work was carried out with the aim to determine physicochemical quality, antioxidant compounds and activity of MD-2 pineapple fruit at five ripening stages. Ripening stage affected physicochemical quality of MD-2 pineapple fruit. Soluble solids concentration of MD-2 pineapple fruit increased from 15.41 to 18.02%SSC when fruit ripened from stage 1 to 4 and no significant difference was found in fruit between stage 4 and 5. The ascorbic acid content decreased while total carotenoids content increased as ripening stage advanced. The total phenolic content of both 80% methanol and water extraction solvents increased significantly as fruit ripened from stage 1 to 3 and reduced as fruit ripened to stage 5. The antioxidant activity of MD-2 pineapple fruit as assayed using DPPH, FRAP and ABTS showed similar trend as total phenolic content. These results suggest that ripening stage affect MD-2 pineapple fruit quality and nutritional values.