Postharvest quality of two Pakistani mango (Mangifera Indica L.) cultivars subjected to high temperature ripening
Ishtiag A. Rajwana, T. Thanaraj, Leon. A. Terryl, Aman U. Malik
Abstracts of 7th International Postharvest Symposium 2012 (IPS2012). 25-29 June, 2012. Putra World Trade Centre (PWTC), Kuala Lumpur, Malaysia. 238 pages.
2012
บทคัดย่อ
Mango is one of the most important tropical fruits in Pakistan; however, despite its significance, chemometric profiles of indigenous and commercially prevalent cultivars is scant. The present study was designed to determine the level of non-structural carbohydrates (NSC), non-volatile organic acids (OA), total phenolics (TP) and antioxidant capacity (AOC) from both peel and pulp of two commercially-grown Pakistani mango cultivars viz. Anwar Ratole and Chaunsa that took 4-5 days to ripen at 32°C. Results showed that sucrose was the dominant sugar (504.0-595.3 mg g-1DW) and contributed to more than half of the total sugars present in both peel and pulp followed by fructose (22.9-99.7 mg g-1'DW) and glucose (0.5-53.5 mg g-1DW). Citric acid was the principal organic acid (58.9%) observed in the cultivars tested. Higher mean values for total acids was observed in cv. Anwar Ratole (40.4 mg g-1DW) followed by Chaunsa (23.5 mg g-1DW). Peel extracts for the cultivars exhibited significantly higher mean values for TP (44.6-53.8 mg GAE g-1DW) as compared to pulp (1.1-1.9 mg GAE g-1DW). Concomitantly, AOC was double in pulp of cv. Anwar Ratole compared with Chaunsa. The study revealed unique features of the two mango cultivars. From a market perspective, the study demonstrated that high temperature (32°C) storage conditions did not change ripening physiology and nutritional qualities.