Changes of Quality of Different Parts of Crystal and Guanxi Honey Pomelo during Storage

The storage characteristics of crystal honey pomelo and guanxi honey pomelo in Ruili region during storage were compared and fruit different parts inner quality and sensory flavor were determined. The results showed that the total soluble solids (TSS) content of two cultivars increased firstly and then decreased during storage. The variation of TSS content of crystal honey pomelo fruit pedicel was biggest. Compared to the maximum, the TSS content of fruit pedicel, equator and areola significantly decreased 55.35%, 43.39% and 39.36%. The variation of TSS content of guanxi honey pomelo had no significant difference among three parts. The fruit titratable acid (TA) content of two cultivars decreased firstly and then increased and decreased again. Vitamin C (V_C) of two cultivars showed a decreasing trend. The variation of the fruit pedicel TA content and V_C were both larger. The TA content of crystal honey pomelo fruit pedicel, equator and areola decreased 63.44%, 52.22% and 50.00% than before storage (p<0.05). The V_C content of crystal honey pomelo fruit pedicel, equator and areola significantly decreased 53.70%, 44.84% and 43.00% (p<0.05), respectively. Through the sensory score, the sensory scores of crystal honey pomelo fruit pedicel, equator and areola decreased faster than the guanxi honey pomelo. The sensory score of crystal honey pomelo fruit pedicel was the first to reach the unacceptable degree. Comprehensive analysis showed that, the quality of the pedicel of the two cultivars had the greatest changes. Crystal honey pomelo would improve the quality of the fruit within one month of storage, but with the extension of storage time, the quality of the fruit decreased significantly, and the quality of Guanxi honey pomelo decreased relatively small.