Effect of size grading on quality and storage of mango cv. Gulab Khas.
Sanjay Singh
Author Affiliation: Department of Horticulture (Fruits), B.A.C. Sabour, Bhagalpur (Bihar), India.
9 : 15-20
Abstract : Mature fruits of mango cv. Gulab Khas were classified into A (large; 210 g), B (medium; 170±20 g) and C (small; 130±20 g) grades based on fruit weight. Ripening, spoilage loss, weight loss, total soluble solid (TSS) content and titratable acidity were evaluated during fruit storage. The ripening percentage was lowest (34%) for the A fruits and highest (68%) for the C fruits after 5 days of storage. However, after 7 days of storage, no significant variation in ripening was observed between A and B fruits. Bud ripening was lower in A fruits than in C fruits. Spoilage loss was lowest in A fruits (8%) and highest in C fruits (17%) on the 9th day of storage. The magnitude of physiological weight loss at 5, 7, 9 and 11 days of storage was greatest in C fruits (88.90, 10.0, 27.0 and 29.0%, respectively) and lowest in A fruits (5.0, 7.0, 13.0 and 16.0%). The TSS content of fruits increased after 5 days of storage. The increase in TSS (mainly soluble sugars), total sugar and reducing sugar contents was most pronounced in C fruits, followed by B and A fruits. The highest sugar content was obtained on the 9th day of storage for all fruit grades. The ascorbic acid decreased with the increase in storage duration.